Verb tenses

Verb tenses

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The Verb

The general review
Grammatically, the verb is the most complex part of speech. This is due to the central role it performs in the expression of the predicative function of the sentence, i.e. the functions establishing the connection between the situation named in the utterance and reality.

The complexity of the verb is inherent not only in the intricate structure of its grammatical, categories, but also in its various subclass divisions.
The complicated character of the grammatical and lexico-grammatical structure of the verb has given rise to much dispute and controversy and also terminological disagreements among the scholars. The general categorical meaning of the verb is process.

A verb is a word (e.g.: to run) or a phrase (e.g.: run out of), which expresses the existence of a state (love, seem) or the doing of an action (take, play).
From the point of view of their outward structure, verbs may be simple, composite and phrasal.

The original simple verbs are not numerous (go, take, real, etc).
But conversion (zero-suffixation) as means of derivation, greatly enlarges the simple stem set of verbs. It is one of the most productive ways of forming verbs in ME.
Ex.: a cloud - to cloud, a house - to house, a man - to man, a park - to park.
The typical suffixes expanding the stem of the verb are: -ate; -en; -ify; -izy.
The verb-deriving prefixes are:
Be- (e.g.: belittle, befriend, bemoan);
En- (e.g.: engulf, embed);
Re- (e.g.: remake);
Under- (e.g.: undergo);
Over- (e.g.: overestimate);
Sub- (e.g.: submerge);
Mis- (e.g.: misunderstand)

The composite verb stems (blackmail, whitewash, etc).
Phrasal verbs occupy an intermediate position between analytical forms of the verb and syntactic word combinations. Among such stems 2 specific constructions should be mentioned:
A) a combination of the head-verb (have, give, take and some others) with a noun; the combination has its equivalent an ordinary verb. Ex.: to have a smoke - to smoke; to give a smile - to smile; to take a stroll - to stroll.
B) а combination of a head verb with a verbal postposition that has a specificational value. Ex. stand up; go on; give in; be off, get along.
On the basis of the subject-process relation all the notional verbs be divided into actional and statal.
Actional verbs express the action performed by the subject. To this class belong such verbs as do, act, make, go, read, learn, discover, etc.
Statal verbs denote the caste of their subject. To this subclass belong such verbs as be live, survive, worry, suffer, see, know, etc. They usually occur in the simple form in all tenses. They are not generally used in progressive forms. But if there are used so there any change of meaning. E.g.: Oh, it hurts! — Oh, it's hurting!

Finite & non-finite verbs

The complicated structure and character of the verb has given rise to much dispute and controversy. The morphological field of the English verb heterogeneous. It includes a number of groups or classes of verbs, which differ from each other in their morphological and syntactic properties.
All English verbs have finite and non-finite forms.

The finite verb invariably performs the function of the verb- predicate. Finite verbs are subdivided into regular and irregular depending on the way the participle II are formed.

Non-finite verbs perform different functions according to their intermediary nature (subject, object, adverbial modifier, attribute). They may be used as any member of the sentence but the predicate. Inside the sentence verbals make up complexes with other members of the sentence.

Соnсlusiоn
The nucleus of the morphological field of the verb is based on the finite verbs, and the periphery includes all other groups of verbs and verbals.

The grammatical categories which find formal expression in the outward structure of the verb are categories of person, number, tense, aspect, voice, mood. This complete set is revealed in every word-form of the notional finite form.
From the functional point of view the class of verbs may be subdivided into the set of full nominative value and partial. Notional verbs are verbs of full nominative value. The set of partial nominative value represent semi-notional and functional verbs. The first set is derivationally open it includes the bulk of the verbal lexicon. The second set is derivationally closed, it includes limited subsets of verbs characterized by individual relational properties.
Semi-notional and functional verbs include auxiliary verbs, modal verbs, link-verbs. Semi-notional verbs (seem, happen, turn out, begin, continue, stop, fall, try, etc).
Link-verbs: seem, appear, look, feel, become, get, grow, remain, keep.
Auxiliary verbs constitute grammatical elements of the categorical forms of the verb. These are the verbs be, have, do shall, will, should, may, might. Auxiliary verbs to give other information about actions and states.
Ex. be may be used with the present participle of a full verb to say that an action was going on at a particular time ("in progress"). I was swimming.
Ex.: The verb “to have” may be used with the past participle of a full verb to say that an action is completed (I have finished my job).

Link-verbs introduce the nominal part of the predicate (the predicative), which is commonly expressed by a noun, an adjective or a phrase of a similar semantico-grammatical character. It should be noted that link-verb, although they are named so, are not devoid of meaningful content. Their function is connecting (linking) the subject and the predicative of the sentence. The linking function in the purest form is effected by the verb be (pure link-verb). All the link-verbs other than the pure links the pure specification express some specification (specifying link-verbs). Two main groups:
A) perceptional link verbs: seem, appear, look, feel, taste.
B) factual limk-verbs: become, get, grow, remain, keep.
Verbals make up a special grammatical category.

The infinitive

Among the various forms of the verb the infinitive occupies a unique position. Its status is that of the principal representative of the verb-lexeme as a whole. This is determined by the two factors:
A) its giving the most general dynamic name to the process;
B) its serving as the actual derivative base for all the other regular forms of the verb.
The Infinitive is intermediate between the verb and the noun. It combines the properties of the verb with those of the noun. It is considered as the head-form of the whole paradigm of the verb.

The Participle

The Participle is intermediate between the verb and the adjective and adverb.
The Present Participle is the non-finite form of the verb which combines the properties of the verb and those of the adjective and adverb, serving as qualifying processual name. In its outer form the present participle is wholly homonymous with the gerund and distinguishes the same grammatical categories.
Like all the verbals it has no categorical time distinctions, and the attribute "present" in its conventional name is not immediately explanatory; it is used from force of tradition.
Past Participle is the non-finite form of the verb which combines the properties of the verb with those of the adjective, serving as the qualifying processual name. It is a single form, having no paradigm of its own. It conveys implicitly the categorial meaning of the perfect and the passive. The main functions in the sentence are those of the attribute and the predicative.

The gerund

The gerund is the non- finite form of the verb, which like the infinitive combines the properties of the verb with those of the noun. Similar to the infinitive, gerund serves as me verbal name of a process, but its substantive quality is more strongly pronounced than that of the Infinitive.
A question might arise, why the Infinitive and not the gerund is taken as the head-form of the verbal paradigm?
The gerund cannot perform the function of the paradigmatic head-form for a number of reasons. In the first place, it is more detached from the finite verb than the infinitive semantically. Then it is a suffixal form, which makes it less generalized. Finally, it is less definite, being subject to easy neutralization in its opposition. Hence the gerund is no rival of the infinitive in the paradigmatic head-form function.
The formal sign of the gerund is wholly homonymous with that of the present participle: it is the suffix ”-ing” added to the grammatically leading element. Like the infinitive the gerund is a categorially changeable form. It distinguishes the aspective category of retrospective coordination (perfect in opposition), and the category of voice (passive in opposition). Consequently the categorical paradigm of the gerund includes 4 forms: the simple, the perfect active, the simple passive the perfect passive.

Modal Verbs
Modal verbs express the attitude: ability, obligation, permission, advisability, probability. Modal Verbs are defective in forms. They do not differentiate the category of person, number, voice, aspect, perfect, no future tense no verbals. They have lost many of their categorial meanings.
Modal verbs or modals are concerned with our relationship with someone else. Modal have 2 major functions which can be defined as primary and secondary.
Primary function of Modal Verbs. In their primary function MVs closely reflect the meanings:
A) of ability (can/could). / can lift 25 kg/I can type.
B) of permission (may/might). You may leave early.
C) of prediction (will/would) - (shall/should). It will rain soon.
D) Of escapable obligation or duty (should/ought to). You should (ought to) do as you are told.
E) Of inescapable obligation. You must be quiet. F) Of absence of obligation. You needn't wait.
Secondary function of MVs
In their secondary function nine of modal auxiliaries can be used to express the degree of certainly/uncertainly a speaker fuels about a possibility. They can be arranged on a scale from the greatest uncertainty (might) to the greatest certainty (must).
might
may
could                                                          
can             be right         
should       have been right
You   ought to    
would
will
must

very certain
 

almost certain

The category of aspect   
The aspective meaning of the verb reflects the mode of the realization of the process. The opposition of the continuous forms of the verb to the non-continuous represents the aspective category of development. The marked member of the opposition is the continuous. It is built by the auxiliary be plus the Present Participle. In symbolic notation it is represented by the formula be...ing. The categorial meaning of the Continuous is "action in progress".
The unmarked member is the indefinite, which leaves the meaning unspecified. Four combinations of the continuous and the indefinite are possible in principle in Modern English. E.g.: While I was typing, Mary and Tom were chatting in the adjoining room. While I typing, Tom and Mary were chatting in the adjoining room. While I was typing, they chatted in ... While I typed, they chatted.

Clearly, the difference in meaning cannot lie in their time denotations. The time is shown by their time signals (were - ed). The meaningful difference consists in the following: the continuous shows the action in the very process of its realization; the indefinite points it out as a mere fact. We speak of the morphological category of the verb, but care should be taken that the character of the development of the action may also be expressed lexically or remain implicit. E.g.: When I entered the room he was writing a letter. He wrote and wrote the letter (lexically). When I entered the room, he wrote a letter.
In the last sentence the form of the verb doesn't express the Continuous aspect explicitly because the speaker isn't interested in the action, but in the object of the action. Traditionally forms like "is writing" are called Present, Past, Future Continuous Tense, but that is not quite right. Such forms should be called Present Tense, Continuous aspect (is writing). The Present Tense is modified by the Continuous. It the Continuous were a special tense then we should speak of 2 tenses at once. But the action can't develop in 2 tenses at once. If the actions are not progressive by themselves (if they are not shown as progressive), the description will go without the continuous forms. The Continuous refers a to a definite time-point. The category of development undergoes explicit various reductions:
1. The unlimitive verbs are very easily neutralized Ex. The night is wonderfully silent. The stars shine with a fierce brilliancy, the Southern Cross and wind. The Duke's face seemed blushed, and more lined than some of his recent photographs showed. He held a glass in his hand.

2. As to the statal verbs, their neutralization amounts to a grammatical rule. They are so called "never-used-in-the-Continuous" verbs: a) the unique “to be” and “to have”; b) verbs of possession, verbs of relation, of physical perception, of mental perception

3. Worthy of note is the regular neutralization with the introductory verb supporting the participial construction of parallel action. Ex. He stood smoking a pipe. Not normally: He was standing smoking.
4. On the other hand, the Continuous can be used to denote habitual, recurrent actions. Continuous verb forms are more expressive than non-continuous -   they are used in emotional speech. Ex.: He is always complaining.
5. Special note should be of the broadening use of the Continuous with unlimitive verbs. Here are some typical examples. Ex. I heard a rumor that a certain member here present has been seeing the prisoner this afternoon (E.M. Forster). I had a horrid feeling she was seeing right through me and knowing all about me. What matters is, you're being damn fools (A.Hailey)
6. Compare similar transpositions in the expressions of anticipated future. E.g.: Dr. Aarons will be seeing the patient this morning (A.Hailey). Soon we shall be hearing the news about the docking of the spaceships having gone through.
Since the neutralization of the Continuous with these verbs is quite regular, we have an emphatic reduction serving the purpose of speech expressiveness.

The Category of voice
The category of Voice expresses relations between the subject and the object of the action or between the subject and the action.
The opposition of the passive form of the verb to the active form of the verb expresses the voice of the English Verb. E.g.: writes - is written. The passive form is the strong member of the opposition. On the plane of expression it is marked by the combination of the auxiliary be with the Past Participle of the notional verb. The active form as a weak member of the opposition expresses "non-passivity". The Active Voice shows that the subject of the sentence is the doer of the action. The Passive Voice shows that the subject is acted upon. The agent may be expressed in the sentence and it's usually introduced with the help of the preposition by. Ex. The book is written by a young writer.
The sentence with the passive voice may include a means of the action, which is introduced, with the help of the conjunction with. Ex. The book is covered with a newspaper.

The category of voice has a much broader representation in the system of the English verb than in the system of the Russian verb, since in English not only transitive but also intransitive verbs can be used.
In accord with their relation to the passive voice, all the verbs can be divided into 2 large sets: the set of passivized verbs and the set of non-passivized verbs. In particular the passive is alien to many verbs of the statal subclass, such as have, belong, cost, resemble, fail, misgive, etc.
The demarcation line between the passivized and non-passivized set is not rigid, and the verbs of the non-passivized set may migrate into the passivized set in various contexts. Ex. The bed has not been slept in. The house seems not to have been lived in.
Sometimes the opposition between 2 forms may be reduced. It means that the verb may be used in the Active Voice form with the meaning of the Passive Voice. Usually we observe it with medial verbs and some authors speak of the medial Voice.
The matter is that verbs may be transitive (which require a subject and an object) and intransitive (which do not require an object) because an action of the verb is directed at a subject. Ex. He reads a book. She smiled.
Medial verbs do not require any subject but as the English sentence requires that the position of the subject should be filled in, then the object fills in the position of the subject. Ex. The book sells well.

Verbs that are Active in Form but Passive in Meaning
Some verbs which are usually followed by an object (to sell, to cut, to wash) can be used without an object and take on a passive meaning. In this, case, the person carrying out the action of the Verb is not referred to. Ex. This book sells well, i.e. it is sold to many people. The dress washes/irons, well, i.e. it is easily washed/ironed. This material makes up nicely into suits, i.e. it can be used by the tailor for making suits. The butter spreads easily, i.e. it can be spread easily. The bread is cutting badly because it's very soft, i.e. to cut the bread is difficult. Other tenses may also be used. The book sold well. The dress has washed well. The material will make up nicely.
Note: the verbs are followed by adverbs in the above examples. It is also possible to omit the adverb, if the meaning is clear. This is often the case in the question form and in the negative. E.g.: The book didn't sell, so it wasn't reprinted. The dress is very pretty. Will it wash? The material should make up into a winter dress, shouldn't it? Butter won’t spread when it's been in the fridge. Will the bread cut? If not, try the other knife.
There are some other verbs of this sort, with the nouns (subjects) that they are often used with in this construction

This Mood is also used in that clauses, when the main clause contains an expression of recommendation, resolution, demand, etc. The use of this subjunctive I occurs chiefly in formal style (and especially in Am E) where in less other devices, such as to - infinitive or should = infinitive.
It is necessary that he be there.
It is necessary that he should be there.
It is necessary for him to be there.
Subjunctive II denotes an unreal action and it coincides in the form with the Past Indefinite Tense (Subjunctive II Present) or Past Perfect (Subjunctive II Past). Ex.: I wish he had told the truth. If only he were here!
Mood is expressed in English to a much greater extent by past tense forms. E.g.:
If you taught me, I would learn quickly.
If she was/were to do smth like that.
He spoke to me as if I was/ were deaf...
I wish I was/were was
Note:
1) “Was” is more common in less formal style
2) Only “were” is acceptable in "As it were" (= so to speak)
3) “Were” is usual in "If I were you".

The Conditional Mood denotes an unreal action and is built by the auxiliary verb "world" + any Infinitive a non-perfect infinitive expresses Simultaneousness while a perfect infinitive expresses priority. E.g.: But for the rain we would go for a walk. But for the rain we would have gone...
The Suppositional Mood also expresses a problematic action and is formed with the help of the auxiliary verb "should" for all the persons + Infinitive. E.g.: Ring me up if he should be there.
This mood can be used with any verb in subordinate that - clauses when the main clause contains an expression of recommendation resolution, demand etc. (demand, require, insist, suggest...) E.g.: It is necessary that every member should inform himself of these rules = It is necessary for every member to inform... It is strange that he should have left so early.
Subjunctive I and the Suppositional Mood are differentiated only by their form but their meaning is the same.
Taking into consideration the fact that the forms of the Obligue Moods coincide in many cases with the forms of the Indicative Mood, there arises a problem of homonymy or polysemy. E.g.: He lived here. (The indicative Mood, Past Tense, Priority, real action).
If only he lived! (Subjunctive II, simultaneousness, unreal action)

CONDITIONAL SENTENCES

The Advanced English Course for Foreign Students by Brian Kelly, B.A. L., Longmans, 1980, pp. 76-91. Theme “Verb: Mood”

A. prose passages. (See also pars. 358-359.)
1. Unless Jim stops burning the candle at both ends, he may ruin both his health and his prospects. He is certainly going the pace. If he were able to look into the future, he would not be so wild. There is no doubt that he will go to the bad. unless he changes his ways. In any case, he will not get on in the world, if he gives way to his inclinations so easily. If he tried to control himself, and live more quietly, it would be better for him. But he is game for anything, when he is in one of his wild moods. If a young man fools awaythe time that he should spend in study, he cannot expect to come off with flying colours in his examinations. But Jim makes fun of steadiness, and says that if it means drudgery, hard work is not worth while. According to him, a life that did not include women, wine, and cards, would not be life at all, but mere existence. He forgets that if you do not take advantage of your opportunities while you are young, your life must necessarily be a failure afterwards. Even supposing a man like that got over his folly later, and turned over a new leaf, it would probably be too late. If you should see him, I think you ought to try to persuade him of his foolishness. You might tell him that it is a shame to see a brilliant young fellow like him making a fool of himself. If you would try, I think it might do some good. Do you think you could? Unless we lay our heads together and find some way of getting him away from the company he is keeping, he will so to the dogs altogether. But as long as he meets all attempts to help him with high words, it will be difficult even for the friends of a lifetime to have patience with him. It would be difficult to expect anybody to lend a helping hand to a man. // he persisted, as Jim does, in placing a wrong construction on everything that is said to him. If only he realized that his friends are acting for the best, it might be possible to do something for him. But if he persists in calling everybody a busybody for taking an interest in his welfare, he must not be surprised if they draw in their horns. If he keeps on in that strain, everybody will give him up as a bad job. Supposing everybody were to behave as he does, what would become of the world? He says that it would be a better place to live in; and that he would be more impressed with my remarks, did he not suspect that I speak with my tongue in my cheek. It seems that he has heard rumors of my own gay and joyous youth. All I can say is that if his actions were to be considered as a norm of natural behaviour, then / should have been considered an anchorite by comparison. / should be the last person in the world to condemn a little fun. provided it did not interfere with the more serious business of life. A nation can only prosper on condition • that its citizens work hard and live soberly. Of course. if Jim is bent on picking quarrels with his best friends, he may do so, provided that he does not come running to them afterwards to make friends again. If he sows his wild oats, we are not going to reap the crop.

2. I must visit Mrs. X. today, because she is not well again. If she were more careful of her health, she would not have these attacks. Things would be different with her, if only she took the rest that she so badly needs. But she will not, unless somebody convinces her of the necessity for it. She would get into a state of nervous excitement, if her relatives were to press her too much about it. Supposing someone did so, it would only aggregate the already dangerous state in which she now finds herself. I dare say she could easily get better, provided she took a little more nourishment. But even supposing she did, it would probably be of little use, for she would immediately start overtaxing her strength again. She would work from dawn to dusk, provided she could stand on her feet. She tries to be patient, but finds it difficult. She says that if only people would remember how miserable cantankerousness makes those around them, sick people might be more patient. If she let her daughter Mary look after household matters, it would be a help. But she says that Mary is very young yet; and that the servants would probably not obey her. if she were in charge. I think that Mrs. X. is mistaken. I am sure that the servants would obey Maty without hesitation, provided that Mrs. X. supported her with her authority.

3. In the third exercise, we saw that John and Maty had decided to go to Worthing.
" What station do we leave from?" asked John.
"Waterloo," answered Mary promptly. "If we hurry, we should get a train at about two thirty. If we should be late for that, we could get one about half an hour later."
" If you would decide beforehand what we are going to do over the week-end, and avoid this last-minute rush." said John, " we might have some chance of getting somewhere sometime."
Arrived at Waterloo Station, Mary made her way to the inquiry-office. "Could you tell me what platform the trains leave for Worthing from? " she asked.
" I might, if this were Victoria Station," answered the clerk with a grin. "You might try going there."
" Well now! I must have been mistaken," cried Mary gaily, turning to John. " What do you think of that?"
" If I were to say what I thought," growled John, " this building would go up in flames."
" Oh, well," said Maty cheerfully, " anybody might make a mistake. You might have made sure yourself before we started, instead of leaving it all to me."
" But what shall we do? " persisted John. " If we went to Victoria at once, we might get a train to arrive in Worthing somewhere before four. But the afternoon would be half over. Couldn't we get a train for some place from this station? We might try Salisbury, where you were born. I wish we had some kind of hiker's guide-book."
" Ask at that bookstall over there," suggested Mary. " And if they have one, buy it."
" Would you mind showing me some kind of hiker's guide ? " said John; at the bookstall.
" Certainly, sir," said the assistant. " Might I suggest this one ? "
" Could I have a look at it first ? " said John, and examined it.
" I wish you would consult me before paying for things," said Mary, on looking John's purchase over. " If you did, you might buy the wrong thing less often. This one has nothing about camping-grounds."
" Might I suggest," remarked John, " that Saturday afternoon is hardly the best time to buy books of the kind anyway ? Even if we should find one, it would be too late to make any use of it."
Mary stood stock-still in the middle of the station. "I want a proper guide-book!" she wailed. "You would get the wrong one \ You might try and please me just for once. If you were really a loving husband, you would. You have been behaving like a bear all afternoon. If you don't stop, I'll scream \ "
And she looked as if she would, too. John cast an uneasy glance around at the passers-by, who were eyeing "the pair curiously. " Come on," he said urgently. " If you go on like that, we will never get anywhere. Let's go to Victoria, by all means, and see if there is a train. Though we should have been in Worthing by now, if you had not made the silly mistake of bringing us here first."
" If you were as clever as you think you are, you wouldn't have let me make it." retorted Mary.
" Look here, if we go into all that again, we shall be here all night," answered John impatiently. " Let's go."
They got into a train at a quarter past three, and had to take seats separately, at opposite ends of the coach, the train was so crowded. John reflected that it might have been worse, for he required time to cool down. He found himself sitting with a married couple and their child, and got into conversation with them.
" Might I ask you," he said to the man, " if your wife likes hiking ? "
" If she does," replied the man, " she's kept the secret pretty well. You might ask her, though."
" If I did," replied the lady, with a placid smile, " it wouldn't make much difference, anyway. It would take a good deal to move my husband out of his garden over a week-end."
" Lucky husband ! " said John.

4. If you should happen to meet a seer who could look into the future as well as into the past, you might let me know. If / had ever met such a person, / should have asked him to drop in and have a chat, long ago. For there are so many interesting questions that / could have asked him. For it seems to me that many of the events which have so influenced modern life might not have taken place, and that many of the advantages we now enjoy could never have been ours, had not certain men lived 'in certain countries at certain dates. For instance, unless there are financial or personal reasons to slop me, / can go to America if I want to. Do I owe this to Columbus and Isabella of Castile, or should I have been able to go even if these people had never seen the light? Again, it would be interesting to know what would have happened to Asia Minor and North Africa if Mahomed had never been born ; and whether the Greek Empire might have recovered from the decline that had set in or whether some other power would have hurried it on to its ruin and destruction.
If Luther had been a Dominican instead of an Augustinian, what a difference it might have made. The flower of the Renaissance need not have withered so soon in northern Europe ; Kant's philosophy might have taken a different direction ; Henry the Eighth might not have repudiated his first wife; and English thought might perhaps have been a little more logical. But in that case, we should not have had the charming destructiveness of Bernard Shaw, or the wild and beautiful expression of Shelly's spiritual hunger.
If we had not taken Western ideas to Japan, need we have been worrying to-day about her expansion in the Far East ? Dared she have undertaken the Chinese adventure, if England and the U.S.A. had put, their foot down firmly in the beginning ?
Would I have had a vote to-day, if Rousseau had not written his " Social Contract," and if Voltaire had not blazed up in a white flame of anger at the injustices of his epoch ?
As for the Great War, could the Allies have been .successful, if Gettysburg had been lost instead of gained by the forces of the North ?
Who knows . . .? There are so many "ifs" in life!

B. THE USE OF THE CONDITIONAL SENTENCES

38. In a simple statement of cause and effect (par. 66), the verb which expresses the condition is either of the same tense as the verb that expresses the result, or one of the verbs is in the present tense, and the other is in the present perfect.
E.g.: If you mix glycerine with potassium permanganate, you get spontaneous combustion. If you live in London, you have learnt what fog is. If you have lived in Madrid, you know the Puerto del Sol. If one lived in London during the war, one had to do without many luxuries. If you have been in Rome, you have probably seen St. Peter's.
39. Where the possibility of fulfilling the condition is entertained, we express the residt by means of "shall" or " will", or by means of the imperative, or by means of any other suitable anomalous finite in the present tense. The condition can be expressed by means of any ordinary verb in the present tense.
E.g.:If I drink wine with my lunch to-day, / shall feel uncomfortable all afternoon. If you break your journey-in Paris, you will have time to see Notre Dame. If John studies hard, he may pass the exam. If you finish your work before six, you can go home. If you get the opportunity, you must meet her. If you go to London, you must visit the British Museum. If he comes here, you ought to refuse to see him. If he calls, tell him / am not at home. He will talk about religion, if he can get a listener. If you really are unwell, you had better go to bed. If he gives the order, / dare not obey it. If his father leaves him the money, he need not work any more. If you really are diabetic, you must not eat sugary food. If you cannot control your temper, you should not get into arguments.
40. If the fulfillment of the condition is considered less likely or less welcome than some other alternative, however," should" is used in the conditional clause. E.g., Should he refuse to do it, arrest him at once. Should the worst come to the worst, I can always leave the country. Should the crisis come, I shall be at my post.
41. When the fulfillment of the condition is considered rather unlikely, the condition is expressed by the preterit (q.v.) of any suitable verb ; and the result by means of " should," " would," " might," or " could ". E.g., If I drank wine with my lunch, / should be uncomfortable all afternoon. Provided / broke my journey in Paris, / could see Notre Dame. If she stood up to her husband, he would not bully her. He might be cured of his tuberculosis, on condition that he went to some place like Colorado.
42. Where the fulfillment of the condition is considered highly improbable, or impossible, the condition is expressed by means of the anomalous finite " were" in all three persons, followed by the infinitive with " to," or by a noun or pronoun complement. The result is expressed by " should," " would," " might," or " could " The use of "should" in the second and third persons strengthens the unreality of the supposition. E.g., Where should one finish, if one were to act in accordance with that criterion. If / were you, I should not do it. / could never forget it, were I to live to be a hundred. If he were to live  in Paris, he might change his ideas about Frenchmen. / would help you, if / were able to. If / were rich, I could do a lot of things that I cannot do now.
43. When the fulfillment of the condition depends on chance, weexpress the condition by means of "should" with an infinitive, in all three persons. The result is expressed by an infinitive preceded by the past or present tense of any of the anomalous finites except" will" and " would" in the meaning of custom or obstinacy, and " used to." The imperative can also be used. E.g., If you should see John, you may as well humor him. If / should come into a fortune, / might go on a trip round the world. If you should find the book, send it along to my house. If you should happen to hear from him before to­morrow, you can telephone me. If you should hear any strange noise, you must telephone the police at once. If he should find himself in difficulties, he ought to be able to extricate himself easily. If you should be unable to finish the work in time, you had better ask Miss Smith to help you. If they should find the dog, they will let you know at once. If the lions should escape, they would be caught at once. If it should get dark before you arrive, you need not be afraid, as the roads are quite safe. I dare not think what / might do if he should get ill. / might do anything.
44. When the fulfillment of the condition depends on consent, " would" with an infinitive expresses the condition in all three persons (par. 21 (B)). The result is expressed by " should" " would," " might," or " could." E.g., / might understand you better, provided you would speak a little more slowly. / could not do it if / would. If he would show a little more good will. / would help him. If he would arrange the preliminaries, / could go on with the work alone.
45. Conditionals dependent on consent are often used incompletely in polite language.1 The result with " might" is also used alone, often indignantly. Could you send the parcel at once? I.e., Could you send the parcel now, if you would? You might get the letter written at once. I.e., You might write the letter now, if you would. You might at least be polite! You might wipe your feet before you come in! I had rather you did not go.
46. To indicate a past condition, which was not fulfilled, the condition is expressed by " had " or " could have " followed by a past participle; and the result is expressed by means of the perfect infinitive of any suitable verb, preceded by the past tense of any anomalous finite except "had better" "used to," and must (obligation). E.g., If / had told him that, he would have been angry. If the wireless operator had repaired his transmitter, the ship could have been saved. If you had received the order, you should have obeyed. If / had got your letter in time, / could have come. If he could have found a friend, he need not have starved. If he had been threatened with a pistol, he dare not have resisted. Had I known, I should have come. Could he have helped me, he would have done so. Had he lived, he was to have been Prime Minister.
463. The part of the sentence which expresses the condition can be introduced by one of the following conjunctions:
on condition that as long as provided providing
if                            if only        suppose supposing
unless
Ex.: Unless John stops playing the fool, he will not be a success in life. Supposing everybody behaved like- that, what would become of the world ? As long as he continues obstinate, one cannot, do anything about it. She could get better, provided she took a little nourishment.
466. The conjunction introducing the condition is often omitted when the fulfilment of the condition is unlikely (par. 41); highly improbable or impossible (par. 42); or unwelcome (par. 40). It can also be omitted in sentences expressing a condition depending on chance (par. 43); or a past condition that was not fulfilled (par. 46).
In all these cases, the condition is introduced by an anomalous finite, followed immediately by its subject. E.g., Should he refuse to pay, see your solicitor? Did I know, I might tell you. Were he to live in Paris, he might change his ideas. Should you see John, ask 'him to ring you up. Had I told him, he would have been angry. Had I got your letter; I could have arranged the matter. There might be some possibility of my helping you, did I have the money.

C. EXERCISES ON THE CONSTRUCTION OF CONDITIONAL SENTENCES.
(a) Change Prose Passage (i) so as to convey that fulfillment of the conditions expressed is rather unlikely.
(b) Change Prose Passage (2) so that the sentences express past conditions unfulfilled.
(c) Change the following sentences, so as to indicate that the fulfillment of the" conditions given is unwelcome.
E.g.: If people talk scandal in her presence, Mary tells them that they ought not to run down their friends and neighbors. If they take it badly and break off with her, Mary remains as cool as a cucumber. If they drop on her, she says, she has no need to worry. If they do not mind their p's and q's while they are with her, it is necessary for her to bring it home 'to them that they must not tear other people's characters to shreds. If they want to make innocent fun of other people, it is quite another matter. If they send her to Coventry as a result of her attitude, well and good. She can grin and bear it.
(d) Change the sentences in the following passage, so as to convey that the fulfillment of the conditions expressed is almost or completely impossible.
E.g.: If Solomon conies back to earth again, he will find everything changed, at least superficially, with the exception of the heart of man. He will notice, for instance, if he picks up a newspaper, that all men are still liars. Indeed, he will be enormously surprised if he finds any thing else to be the case. As he remarked some thousands of years ago, " That which is crooked cannot be made • straight." If he enters the divorce courts and listens to the divorce cases, he will find that model wives are as scarce as ever. And if anyone tells him with pride., that women can now be freed from bad husbands, he will murmur inconsequently, " Who can find a virtuous woman ? For her price is above rubies! " Should anybody ask him what he thinks of all the wonderful discoveries that have been made since his time, he will answer obstinately, " Is there anything whereof it may be said ' This is new ..." There is no new thing under the sun." But he will notice one new thing, just the same. He will observe, provided he gets the opportunity to mix with a few English families, that whereas in his day the women got their own way with their menfolk by diplomatically managing them, they now rule the poor males openly and brutally. And, unless he is more unobserving than I take him to be, he will draw consolation from the fact that a man need not, indeed cannot, any longer be saddled with a hundred shrewish wives at once, but can have them one at a time, if he is willing to spend sixty pounds or so in divorce expenses.
(e) Where possible, change the following sentences so as to convey that the conditions depend for their fulfilment either on chance or on consent.
E.g.: If I get a lot of money left to me, I shall start a newspaper. Supposing somebody realizes what good I can do in this way, and provides me with the wherewithal, the newspaper will be a sensation. What will you say if you pick up a newspaper that tells the truth, the whole truth, and nothing but the truth? If I get the necessary capital, and if I manage to find ten men or so who are incrable of lying, the success of the venture is assured. But it will be difficult to fulfil these conditions. Most people, including newspapermen, cannot undertake to tell the truth, even if they want to. For he is a brave man who tries to tell the truth to others, when he cannot tell it to himself. If you ever meet a man who can be perfectly frank with himself, you might introduce me to him. And if he wants to take on the chief editorship of my paper, I shall pay him an enormous salary. By pure force of truth, he will make the thing a success, even if I do not find any others like him to assist him.
***
1.Change Prose Passage (4) so as to make the sentences express conditions whose fulfillment is rather likely.
2.Classify the conditional sentences in Prose Passage (3) under separate headings, according to the class of condition expressed.

D. QUESTIONS ON THE PROSE PASSAGES

1. May John ruin his health and prospects? What would prevent him from being wild? What is there no doubt of? Will he get on in the world? What would be better for him? When is he game for anything? What cannot a young man expect? What does Jim make fun of? Why? What kind of life would be mere existence? What does he forget? If a man like that got over his folly, what would be the result? If you should see him, what ought you to do? What might you tell him? What might do some good? Unless we lay our heads together, what will happen? If he meets all attempts to help him with high words, what will be the result? What would it be difficult to expect anybody to do? Under what condition might it is possible to do something for him? Why must not he be surprised if people draw in their horns? If he keeps up in that strain, what will happen? What does he say would happen if everybody were to behave as he does? Under what condition would he be more impressed with my remarks? What is your answer to that? Would you condemn a little fun? How can a nation prosper? Under what condition may Jim pick quarrels with his best friends? If he sows his wild oats, who will reap the crop?
2. Under what conditions would Mrs. X. not have her attacks? How could things be different with her? Will she take the rest she needs? If her relatives were to press her, what would happen? What would aggravate her state? How could she get better? Would nourishment be of any use? What would she do from dawn to dusk? What does she say would make sick people more patient? What would be help? Does she think the servants would obey Mary? Under what condition would the servants obey Mary '?
3. Does Mary expect to catch the two thirty? Does she consider the unwelcome possibility of missing it ? How do you know? What remark does John make about last minute rushes? What did Mary say at the Waterloo inquiry office? What did the clerk answer? Did Mary ask John what he thought of it? And what did John answer? What does Mary think John might have done? What does John think might happen if they went to Victoria immediately? What does Mary tell John to do at the bookstall? What does John say at the bookstall? What did the assistant say? What did John answer? Why did Mary wish John would consult her before buying things? What suggestion did John ask to be allowed to make? What did Mary do then? What did she wail that John might try and do? If he didn't stop behaving like a bear, what would she do? Why did John cast an uneasy glance around? What did he say urgently? What did he suggest? Under what condition would they have been in Worthing by then? What was Mary's retort, and John's impatient answer? What did John reflect when he had to take a seat separate from Mary? What question did he ask the man passenger? What did the man answer? What did the lady reply when he asked her if she liked hiking?
4. What might you let me know ? If I had met a seer, what should I have done ? What could I have asked him ? What does it seem to me ? Under what condition can I go to America ? What reflex ion do I make about Columbus and Isabella of Castile ? What would it be interesting to know about Asia Minor and North Africa ? What is an interesting conjecture about the fate of the Greek Empire ? What might have happened if Luther had been a Dominican ? What should we probably not have had, in like case ? What about Japan? What reflection do I make about my right to vote ? Under what conditions would the Allies not have been able to win the war ?

Source : http://major-theoretic.narod.ru/english/Verb.doc

Author : not indicated on the document source

Verb tenses

In English, there are three basic tenses: present, past, and future. Each has a perfect form, indicating completed action; each has a progressive form, indicating ongoing action; and each has a perfect progressive form, indicating ongoing action that will be completed at some definite time. Here is a list of examples of these tenses and their definitions:

Simple Forms
Present Tense
Present tense expresses an unchanging, repeated, or reoccurring action or situation that exists only now. It can also represent a widespread truth.

Past Tense
Past tense expresses an action or situation that was started and finished in the past. Most past tense verbs end in -ed. The irregular verbs have special past tense forms which must be memorized.

Future Tense
Future tense expresses an action or situation that will occur in the future. This tense is formed by using will/shall with the simple form of the verb.
The speaker of the House will finish her term in May of 1998.
The future tense can also be expressed by using am, is, or are with going to.
The surgeon is going to perform the first bypass in Minnesota.
We can also use the present tense form with an adverb or adverbial phrase to show future time.
The president speaks tomorrow. (Tomorrow is a future time adverb.)

Progressive Forms
Present Progressive Tense
Present progressive tense describes an ongoing action that is happening at the same time the statement is written. This tense is formed by using am/is/are with the verb form ending in -ing.
The sociologist is examining the effects that racial discrimination has on society.
Past Progressive Tense
Past progressive tense describes a past action which was happening when another action occurred. This tense is formed by using was/were with the verb form ending in -ing.
The explorer was explaining the lastest discovery in Egypt when protests began on the streets.

Future Progressive Tense
Future progressive tense describes an ongoing or continuous action that will take place in the future. This tense is formed by using will be or shall be with the verb form ending in -ing.
Dr. Jones will be presenting ongoing research on sexist language next week.

Perfect Forms
Present Perfect Tense
Present perfect tense describes an action that happened at an indefinite time in the past or that began in the past and continues in the present.This tense is formed by using has/have with the past participle of the verb. Most past participles end in -ed. Irregular verbs have special past participles that must be memorized.

Past Perfect Tense
Past perfect tense describes an action that took place in the past before another past action. This tense is formed by using had with the past participle of the verb.
By the time the troops arrived, the war had ended.
Future Perfect Tense
Future perfect tense describes an action that will occur in the future before some other action. This tense is formed by using will have with the past participle of the verb.
By the time the troops arrive, the combat group will have spent several weeks waiting.

Perfect Progressive Forms
Present Perfect Progressive
Present perfect progressive tense describes an action that began in the past, continues in the present, and may continue into the future. This tense is formed by using has/have been and the present participle of the verb (the verb form ending in -ing).
The CEO has been considering a transfer to the state of Texas where profits would be larger.
Past Perfect Progressive
Past perfect progressive tense describes a past, ongoing action that was completed before some other past action. This tense is formed by using had been and the present perfect of the verb (the verb form ending in -ing).
Before the budget cuts, the students had been participating in many extracurricular activities.
Future Perfect Progressive
Future perfect progressive tense describes a future, ongoing action that will occur before some specified future time. This tense is formed by using will have been and the present participle of the verb (the verb form ending in -ing).
By the year 2020, linguists will have been studying and defining the Indo-European language family for more than 200 years.

Source: LEO: Literacy Education Online
http://leo.stcloudstate.edu/grammar/tenses.html

http://bc.inter.edu/pse/material_ingles/SummaryofVerbTenses.doc

Author : not indicated on the document source

Verb tenses

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Verb tenses

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