----This is for you. ----You____have!I do not know how to thank you.A．must notB．
题型：不详难度：来源：
----This is for you.
----You____have!I do not know how to thank you.| A．must not | B．couldn´t | C．needn’t | D．shouldn’t |
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答案
| D |
解析
试题分析：情态动词用法。Must not禁止，千万不能；couldn’t have done不可能做某事；needn’t heve done本不需要做某事，实际上却做了；shouldn’t have done本不应该做某事，实际上却做了。句意：—这是给你的。—你本不应该给我的。我不知道该怎么感谢你。故D正确。
点评：本题是高考必考考点，一定要牢记句型意思。must have done过去肯定做了某事。should have done 本应该做而实际未做。can’t have done 过去不可能做了某事；shouldn’t have done 本不应该做而实际做了。 need have done 本有必要做某事；needn’t have done 本没有必要做某事；注意没有 mustn’t have done的形式 |
举一反三
He____to school,so he turned off the alarm clock and went back to sleep.| A．needn’t have gone | B．hasn’t needed to go | | C．needn’t go | D．didn’t need to go |
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for the free tickets, I would not have gone to the films so often.| A．If it is not | B．Were it not | C．Had it not been | D．Should it not be |
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-----Are you pleased with the play?
------Not at all. It couldn’t have been___.| A．worse | B．so better | C．better | D．the worse |
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My father worked day and night. Otherwise, there ________ no one to support the family.| A．would be | B．must be | C．would have been | D．must have been |
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But for your help，I ________ the place.| A．can’t find | B．can’t have found | C．couldn’t have found | D．haven’t found |
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