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I’ll tell him when you will ring again. 我通知他你什么时分再来德律风。(宾语从句)

比拟:I’ll tell him when you ring again.你再打德律风时我通知他。(状语从句)

(2)在make sure, make certain, see (to it) 后的that从句中,谓语动词用普通如今期间替未来时,如:

See to it that you include in the paper whatever questions they didn’t know the answer to last time.

(include 不克不及用will include或其他方式)


(1)by/between/up to/till +过来工夫、since、by the time/when +表现过来发作状况的从句,主句用过来完成时。

如:We had just had our breakfast when an old man came to the door.

Between 1897 and 1919 at least 29 motion pictures in which artificial beings were portrayed had been produced.


(2)by +未来工夫、by the time/ when +谓语动词是普通如今时的从句,主句用未来完成时。如:

By the time you arrive in London, we will have stayed in Europe for two weeks.

I hope her health will have improved greatly by the time we come back next year.

(3)by now、since +过来工夫、in/during/for/over/the past/last few(或详细数字)years/days/months,主句用如今完成时,如:

The changes that had taken place in air travel during the last sixty years would have seemed completely impossible to even the most brilliant scientists at the turn of the 19th century.

但在it is +详细工夫since/before这一句型中,主句更多的时分不必完成时。

It is four years since John left school.

(4)在It is the +序数词/描述词最初级+that的定语从句中,谓语动词常用如今完成时。如:

It isn’t the first time that I have found myself in an embarrassing situation.

(5)在no sooner…than…, hardly/scarcely…when…句型中,主句常用过来完成时。


The company has been promising a rise in salary for ages, but nothing has happened.





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