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, ( I ) ( II ).

I

, , , , . .

If the weather is nice, we go for a walk. , .
If the weather was nice, we went for a walk. , .
If the weather is nice, we' ll go for a walk. , .

II

, , . should / would + Indefinite Infinitive to, - , Past Indefinite were to be.

If he were free, he would do it. , .
If we paid more attention to grammar, we should know the language better. , .

III

, , , . should / would + Perfect Infinitive, , Past Perfect.

I should not have been late yesterday, if my watch had been right. , .

.

if - ; in case - , ; suppose (that) - , ; on condition (that) - , ; provided (that) - , ; unless - ; but for - .

(THE SENTENCE)

- , .

The sun rises in the east. .

. - . - , , .

.

:

. - , : , , .

I translated the text yesterday. .

. : and - ; but - ; while, whereas - , ; or - ; otherwise - ; either or - .

The weather was fine and there were lots of people on the beach. , .
John is a pupil, while his brother is a student. - , -.

, . : , , , , .



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