题目

_______ your valuable help, we couldn’t have finished the experiment ahead of time.

A

If it were not for

B

Had it not been for

C

Were it not for

D

If it has not been for

虚拟语气

本题考查虚拟语气和倒装

B选项,由主句谓语可知本题是与过去事实相反的虚拟条件句,条件从句谓语用“had+过去分词”,如果省略if,从句要用倒装语序,即把had移到主语前面。综上,B选项正确。

A选项,与题意不符,故排除。

C选项,与题意不符,故排除。

D选项,与题意不符,故排除。

故正确答案为B 项。

多做几道

If you are entitled to sickness______, you must claim it from your employer.

A

budget

B

allowance

C

wage

D

income

Around two o’clock every night, Sue will start talking in her dream. It somewhat ________ us.

A

bothers

B

had bothered

C

would bother

D

bothered

It will be at least 10 days _______they finish cleaning up the typhoon-stricken village.

A

until

B

before

C

since

D

when

——What should we pay more attention to if we go camping in the mountains?

——Nothing special. Take a special pair of glasses _______ the wind there is strong and cold.

A

even if

B

in case

C

providing that

D

so long as

This crop has similar qualities to the previous one, _______ both wind resistant and adapted to the same type of soil.

A

being

B

been

C

to be

D

having been

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