精选优质文档-倾情为你奉上“情态动词+have done”用法归纳曲靖市第二中学 杨绍斌 情态动词+have done用法例句must have done 表示主观上对过去已经发生的行为进行推测，意为“想必，准是，一定做了某事”She must have gone through a lot.He must have visited the White House during his stay in the United States.may have donemight have done 表示对过去已发生行为的推测，意为“也许/或许已经（没有）” 一般用于肯定句或否定句中，不用于疑问句 用might则表示语气更加不肯定You may have learnt the news.He may not have heard his name called.Sorry Im late. I might have turned off the alarm clock and gone
