In the summer vacation we____ often take a walk along the river.A might B

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In the summer vacation we____ often take a walk along the river.

A might B could C would D should

答案

解析

如选A ,只表示与现在事实相反，而主句中would have run 表示与过去事实相反，应该用If I had had time,表示。如果从句中含有系动词、情态动词或助词时，可省略if把从句中的were，had或should提到其主语前形成倒装结构。

举一反三

—Why didn’t you attend the lecture yesterday?

—I didn’t think that we _______ on Sundays.

A．should

B．ought to have

C．shouldn’t have

D．will have to

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He _______ Shanghai, for I saw him talking with the headmaster a moment ago.

A．must have gone to

B．can’t have gone to

C．mustn’t have been to

D．can’t have been to

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She is too slow. She ________ pass the test, but she __________ too little.

A．would; knew

B．will; knows

C．would; knows

D．will; knew

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--What do you think of it?

--I think it is a thing of importance that it ____ done soon.

A．is

B．is to be

C．be

D．to be

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Since the road is wet this morning, _____ last night.

A．it must rain

B．it must be raining

C．it must have rained

D．it must have been rain

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