《情态动词表示推测资料》由会员分享，可在线阅读，更多相关《情态动词表示推测资料（9页珍藏版）》请在金锄头文库上搜索。
1、,情态动词表示推测的用法,1.对现在(事情)推测,2.对过去(事情)推测,must +v. (肯定) might/could/may/can +v. (可能) cant+v. (不可能),1.must have done (表肯定性推测) “肯定,准是,”,cant /couldnt have done (表否定性推测)“不可能”,2.may/might have done(表可能性推测)可能,也 许,3.should/ought to have done(表本该做而实际未做的事),shouldnt/oughtnt to have done (表本不该做而实际 已做的事),4.neednt h
2、ave done(表本不必做而实际己做,造成浪, 费,遗憾,不好后果),情态动词表示推测的用法,1.对现在(事情)推测： （情态动词+ 动词原形）,must + v. (肯定) may/might/could/can+v. (可能) cant + v. (不可能),2.对过去(事情)推测：（情态动词+ 完成式）,must have done (表肯定性推测) “肯定,准是,”,cant /couldnt have done (表否定性推测)“不可能”,It must have rained last night,for the road is wet.(It cant/couldnt have
3、 rained last night.),1.It must have rained last night.for the ditch(水道,渠道) is full of water.,2.-Can it have been a comfortable journey?,3.Ten passangers were in a car!It cant have been a comfortable jurnery.,4.He may have gone to Beijing yesterday. (可能性大) 5He might have gone to Beijing yesterday. (可
4、能性小),6.There was plenty of time.She neednt have hurried. 7 You should have come to the meeting.,1.- He must be Mr. Li.(肯定是) -No,he cant be Mr. Li. Mr.Li has gone to Britain.(不可能是),2.We may be late for class.Its already seven to five.(也许),3.You mustnt play with fire!,另外,在虚拟语气中还有: would have done 表示“本
5、来会.” 但实际上并没有发生,You should have come earlier, otherwise you would have met him. 你本该早点来，否则的话，你就会遇见他（实际上没有早来，也没见到他）,must表推测的反意疑问句: 反意问句部分永远不带must. 1.She must be a teacher,isnt she? 2.She must have gone to Shanghai, hasnt she? 3.She must have gone to Shanghai yesterday, didnt she?,特殊疑问句 疑问词+do you,Think suggest believe imagine suppose say,+主语+谓语,(插入语),
