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    精英家教网 > 高中英语 > 题目详情
    ----This is for you.
    ----You____have!I do not know how to thank you.
    A．must notB．couldn´tC．needn’t D．shouldn’t
    D

    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
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