CET4英语语法may和might的用法辨析.docCET4英语语法:may和might的用法辨析 2005-4-14 17:14:49 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) must have done should have done would have done 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。