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may和might的用法辨析

作者: admin来源: 网络文章 时间: 2017-02-09

may和might可以表示可能性和许可。might的语气比may较婉转。此外,may也可以接动词的完成形式,表示可能、说不定已经做某事。

【例如】

I thought it might be difficult for me to learn advanced mathematics. (可能性)

May I come in, sir? (许可)

She may have gone to the hospital.

Research findings show we spend about two hours dreaming every night, no matter what we ____during the day. (cet-4 1999,1)

A) must have done

B) should have done

C) would have done

D) may have done

情态动词后面加动词完成式,有不同意义。

must have done表示一定做过某事;

should have done表示本应该做某事,含有批评的意思;

would have done主要用于虚拟语气,表示对过去的虚拟;

may have done表示可能已经作过某事。

根据句意:研究结果表明,我们每晚有两个小时做梦,不管白天可能做了什么,情态动词后表示可能性,故答案应为D。

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