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Questions and Negatives

Can you play chess? I can’t understand a word. May I leave earlier?

The Contracted Forms

Can’t, couldn’t, mustn’t, needn’t, oughtn’t, mayn’t, shouldn’t.

Modal Verbs and Their Equivalents

Modal verb

Present

Past

Future

Equivalent

can

to be able to…

can

am able to…

is able to…

are able to…

could

was able to…

were able to…

will be able to…

Modal verb

Present

Past

Future

Equivalent

may

to be allowed to…

may

am allowed to…

is allowed to…

are allowed to…

might

was allowed to…

were allowed to…

---

will be allowed to…

Modal verb

Present

Past

Future

Equivalent

must

have to

be to

must

have to

has to

am to

is to

are to

had to

had to

had to

was to

were to

were to

will have to…

will have to…

will have to…

Grammar supplement g conditional sentences

Conditional sentences may express real and unreal condition. They are introduced by the conjunctions: if, in case, provided, unless, suppose.

Condition

Subordinate clause

Principal clause

I Real

If it looks like rain,

If I have more time,

If he is working on Friday,

we’ll stay at home.

I’ll come over.

he won’t be able to go with us.

Present Indefinite/

Present Continuous

Will (Shall)

+ Inf.

Unreal

II Present / Future

If I were you,

If I had more time,

If you knew him better,

If it were not raining,

I would go there myself.

I would come over.

you wouldn’t think so.

I could go out.

Past Indefinite/

Past Continuous

would

could

might

+ Inf.

III Past

If you had gone there,

If you had earned enough money last summer,

you would have seen him.

we could have gone to the South.

Past Perfect

would

could

might

+ have + Participle II

1 “If” is the most common.“In case” and “provided” are chiefly used in sentences of real condition.

If the weather is fine, we shall go outside. Якщо погода буде гарна ми підемо на вулицю.

Unless has a negative meaning.

I’ll come tomorrow unless it rains.Я прийду завтра якщо не буде дощу.

Suppose is more common in sentences of unreal condition.

Suppose he wrote to you, would you answer? – Уявіть, він написав би вам, ви б відповіли?

2 There are two mixed types of sentences of unreal condition:

a) the condition refers to the past but the consequence refers to the present;

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