情态动词表示猜测.ppt

情态动词表示猜测,Must 表示有把握的猜测，意为“一定是”，“准是”有三种形式。1）对现在情况的猜测：must+do 那个高个子男孩一定是个篮球运动员。The tall boy must be a basketball player.我考试没及格，你一定认为我很懒。I failed in the exam,you must think I am lazy.2）对现在正在进行中的事情的猜测；must+be+doing 他看上去很忙，他一定在做作业。He looks busy,he must be doing his homework.3）对过去事情的猜测：must have done/been 你昨天一定遇到他了。You must have met him yesterday.,Must 表示猜测时候的否定形式：cant/couldnt It must be eleven oclock now.It cant/couldnt be eleven oclock now.You must have met him before.-You cannot/couldnt have met him before.,May/might,May/might 表示没有把握的猜测。1）对现在情况的猜测：may/might+do 那个高个子男孩可能是个篮球运动员。The tall boy may/might be a basketball player.我考试没及格，你可能认为我很懒。I failed in the exam,you may/might think I am lazy.2）对现在正在进行中的事情的猜测；may/might+be+doing 他可能在做作业。He may/might be dong his homework.3）对过去事情的猜测：may/might have done/been 你昨天可能遇到他了。You may/might have met him yesterday,在疑问句中表示猜测用can/could,他可能是谁啊？Who can it be?钥匙不在了。可能是谁拿走了？The key is not here.Who could have taken it?.,The workers cant have finished their work yet,_?A.Can they B.are they C.have they D.do they2.You must have been there before,_?A.have you B.did you C.havent you D.didnt you,3.You must have been in Beijing last month,_?arent you B.did you C.weren you D.didnt you 4.Oh,so many letters!You must have lots of friends,_?mustnt you B.dont you C.didnt you D.have you,As a girl of 17,I am outgoing,good at Enlish.Most importantly,I have an experience of woking well with children aged from 7 to 12.I think it is a kind of win-win activity.For one thing,I can help take care of the children.For another,I can improve my English and make more friends.Whats more,I can enrich my life during the summer vacation.Looking forward to your reply.sincerely yours,Li Hua,