截图
简介
这是情态动词表推测的用法ppt，包括了情态动词表推测，情态动词+have done，解题技巧，肯定的推测，一般句末有时间状语等内容，欢迎点击下载。
情态动词表推测的用法ppt是由红软PPT免费下载网推荐的一款课件PPT类型的PowerPoint.
一 情态动词表推测;
二 情态动词+have done；
三 解题技巧
Let's read and translate the sentences!
She couldn't/can't be so stupid to do that.
I may be busy from tomorrow on.
You must be tired after working so long.
She shouldn't be out in such an early morning.
一、情态动词表推测
1. 肯定的推测
一般用must， should， ought to，may（might）或could（不用can），其中，________的语气最强，译为“肯定”、“准是”、“想必是”；
_______________的语气次之，译为“很可能”、“应该”，指按常理推测；____________________的语气最弱，译为“也许”、“可能”。
①---- Are you coming to Jeff’s party?
---- I’m not sure. I ___ go to the concert instead.
A. must B. would C. should D. might
②---Hi， tom. Any idea where jane is?
—She _______ in the classroom. I saw her just now.
A. shall be B. will be
C. must be D. can be
③According to the speed， the car ________ arrive at Shanghai before it gets dark.
A. shall B. should C. must D. need
1. It is usually warm in my hometown in March， but it _____ be rather cold sometime.
A. must B. can C. should D. would
2. It’s nearly seven o’clock. Jack _____ be here at any moment.
A. shall B. should C. can D. must
2. 否定推测分为两种情况：
1）语气不很肯定时，常用may not， might not，
译为____________________
2）否定语气较强时，则用__________，译为“根
本不可能”、“想必不会”，与__________的意思刚好相反。
1.--Is John coming by train?
--He should， but he ____ not. He likes driving
his car.
A. must B. shall C. may D. need
2.— Isn’t that Ann’s husband over there?
— No， it _______ be him. I’m sure he doesn’t wear glasses.
A. can’t B. must not C. won’t D. may not
3. 疑问句中的推测，往往用can或could。
Mr. Bush is on time for everything. How ______ it be that he was late for the opening ceremony？
A. can B. should
C. may D. must
二、情态动词表推测时的时态问题
以must为例
1、推测现在的事，结构是：
eg. He goes to school with a big bag everyday. He must be a student.
2、推测正在进行的事：
eg.The light is off now. He must be sleeping.
3、推测过去的事：
eg. Lihua took a lot of photos in London. He must have visited the city.
说出下列结构的含义
must have done
can't have done
may/might have done
can have done
解决情态动词表推测的题目思路是：
1、判断句式，
2、看推测的把握有多大，
3、看推测的事情什么时候发生。
小综合练习
1. —I think Helen is at home.
—No， she _____ be， for she phoned me from the airport just five minutes ago.
A. mustn’t B. needn’t
C. can’t D. ought not
2. - Good morning. I got an appointment with Miss Smith yesterday.
- Ah， you ______ be Mr. Peter.
A. might B. must C. would D. can
3. What do you mean， there are only ten tickets? There ______ be twelve.
A.should B. would
C. will D. shall
4. He is a good sportsman so he _____ win the match even he is injured.
A. can B. might
C. succeeded to D. was able to
5. Although this task ____ sound easy， great care is needed.
A. must B. may C. shall D. should
6．---When can I come for the photos ? I need them tomorrow afternoon.
---They _____be ready by 12 : 00 .
A. can B. should
C. might D. need
7. —There is no light in the room.
—_____ he be sleeping?
A. Must B. Shall
C. Can D. Will
8. Hurry up， he _____ for you at the school gate now.
A. may be waiting B. may have waited
C. must be waiting D. might wait
9. This cake is very sweet. You ______ a lot of sugar in it.
A. should put B. could have put
C. might put D. must have put
10.——I left my handbag on the train， but luckily someone gave it to a railway official.
——How unbelievable to get it back! I mean， someone ______ it.
A. may steal B. might have stolen
C. must steal D. must have stolen
11. - She looks very happy. She __ have passed the exam.
- I guess so. It’s not difficult after all.
A. should B. could
C. must D. might
12. She ___ have left school， for her bike is still here.
A. can’t B. wouldn’t
C. shouldn’t D. needn’t
二、“情态动词+完成式”
must have done
can't have done
may/might have done
can have done
should(ought to) have done
shouldn't(oughtn't to havedone
could have done
need have done
needn't have done
1. “should（ought to）+完成式”表示____________________________。
“shouldn’t（oughtn’t to）+完成式”表示某种行为
______________________________。
①Oh， I’m not feeling well in the stomach， I _____ so much fried chicken just now.
A. shouldn’t eat
B. mustn’t have eaten
C. shouldn’t have eaten
D. mustn’t eat
②—I’ll tell Mary about her new job tomorrow.
— You________ her last week.
A. ought to tell B. would have told
C. must tell D. should have told
2. “could+have done”
表示__________________但结果没能做成，含有遗憾的意味。
You needn’t have walked up; you _______________ the lift.
A. could have taken
B. could take
C. can have taken
D. can take
3. “needn’t+不定式的完成式”表示_________________而实际上做了某事。
The weather turned out to be fine yesterday. I ______ the trouble to carry my umbrella with me.
A. should have taken
B. could have taken
C. needn’t have taken
D. mustn’t have taken
1. She _____ the book sometime in the past， or she couldn’t have answered the question so well.
A. can have B. must have read
C. should read D. need reading
2. Tom went on foot， but he _____ by bus.
A. might be going B. should go
C. could have gone D. ought have gone
3. Mary _____ the hospital so soon， for she had not got recovered.
A. has left B. didn’t leave
C. must have left D. shouldn’t have left
4.There was plenty of time， so she _____.
A. mustn’t have hurried
B. needn’t hurry
C. mustn’t hurry
D. needn’t have hurried
5. You __ the exam， but you spent all your time playing.
A. can pass
B. could have passed
C. could pass
D. can have passed
6. My MP4 isn’t in my bag. Where_____I have put it？
A. can B. must C. should D. would
7. You _____ him at the meeting yesterday. He has gone to America.
A. can’t see
B. can’t have seen
C. mustn’t have seen
D. needn’t have seen
8. —I’m told that John had another car accident this morning.
—I believe not. He _____ so careless.
A. shouldn’t have been
B. wouldn’t have been
C. couldn’t have been
D. mustn’t have been
Writing 指出刚才的谈话中那句话可以用所学结构翻译？
马航MH370失踪了那么久，机上人员很有可能已经死了，也有可能还活着。失踪后一周里，由于马来西亚没有如实告知马航最后飞行行踪的信息，致使多国在泰国湾的搜救工作徒劳无功。这么多的人力物力和时间原本可以不耗费。生命高于一切，239条生命，两百多个家庭的破碎，马来西亚实在太不应该隐瞒相关信息。一名中国籍的飞机工程师乘客起初被怀疑涉恐子，但经过调查，这名乘客不可能劫持飞机。一个名叫唐驳虎的凤凰新闻评论员推测，飞机肯定落在圣诞岛上。但目前为止，飞机还是找不到，所幸情况有明朗趋势。
马航MH370失踪了那么久，机上人员很有可能已经死了，也有可能还活着。失踪后一周里，由于马来西亚没有如实告知马航最后飞行行踪的信息，致使多国在泰国湾的搜救工作徒劳无功。这么多的人力物力和时间原本可以不耗费。生命高于一切，239条生命，两百多个家庭的破碎，马来西亚实在太不应该隐瞒相关信息。一名中国籍的飞机工程师乘客起初被怀疑涉恐，但经过调查，这名乘客不可能劫持（hijack）飞机。一个名叫唐驳虎的凤凰新闻评论员推测，飞机肯定落在圣诞岛上。但目前为止，飞机还是找不到，所幸情况有明朗趋势。
tips: Malaysia， the manpower， material resources and financial resources， keep the truth， hijack， Christmas Island
三 情态动词的特定语气
3. –I haven’t got the reference book yet， but I’ll have a test on the subject next month.
--Don’t worry. You ___ have it by Friday.
A. could B. shall C. must D. may
When I lived with my roommates in the university， we ________ often talk into the night.
A．might B．must C．should D．would
三 情态动词的特定语气
2. _____ better do (not do)
3._______ rather do…than do
4.____ not ……too/enough
5.can but do _______
三 情态动词的特定语气
6.can’t help but do sth.
can’t but do sth.
can’t choose but do
I can’t but admire your courage .
三 情态动词的特定语气
7.may/might as well (倒不如、只好)
You might as well do your present job before you find a new one .
8.may well do sth. (很可能)
He may well say so /do that.
9.____ you succeed!(祝愿语）
____all your dreams come true!
10.should（应该，表责任，义务）
You should study hard as a student.
1.—May I smoke here ?
—If you _____， choose a seat in the smoking section.
A. should B. could
C. may D. must
2. In those days， whenever I had difficulties， I _____ Mr. Wang for help.
A. used to go to B. was used to go to
C. would go to D. used to going to
3. — I think I’ll give Bob a ring.
— You _____. You haven’t been in touch with him for ages.
A. will B. may C. have to D. should
情态动词的做题技巧:
(1) —Catherine， I have cleaned the room for you.
—Thanks. You _____it. I could manage it myself.
A. needn't do B. needn't have done
C. mustn't do D. mustn't have done
(2) —Mary stayed in Africa studying wild animals for 13 years before she returned.
— Oh， dear! She ______ through a lot of difficulties!
A. may go
B. might go
C. should have gone
D. must have gone
展开
