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Unit 8 Clauses of Time and Condition

Referring to the Future

In complex sentences with the subordinate clauses of time and condition the futuretenses are used only in the main (principal)clause. In the subordinate clause actions referring to the futureare expressed by the Present Simple of the Present Perfecttenses.

Clauses of time are introduced by the conjunctions when, while, as soon as, after, before, until, till

I’ll pay you back when I next see you.

Will yon feed the cats while I'm away?

As soon as Ann and Bob have got married, they'll move to California.

I’ll have a bath before I go to work.

After we've finished the building work, things will be easier.

We won't make any decision until he arrives.

We'll support them till they have found work.

Clauses of condition are introduced by the conjunctions if, in case, unless, provided, on condition that, as long as, so long as

If you come tonight, I'm sure you'll have much. inn.

I'll buy a chicken in case your mother stays for lunch.

I’ll take the job unless the pay is too low.

We’ll arrive on time provided the train doesn’t stop again.

We'll play another game so long as you are not feeling tired.

You can use my car on condition thatyou drive it carefully.

Note:Remember to use one of the Future Tense inobject clausesafter the conjunctions if (whether) and when.

Iwonder when I willget my typewriter back.

I'm not sure if (whether)he will be ableto continue in this job.

I don't know ifhe will behere whenyou phonetomorrow morning.

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