情态动词表示推测和可能性..

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.
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.
---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
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___可__能__不___、__也___许__不___
❖ 2）否定语气较强时，则用___c_a_n__’_t__，译为“根 ❖ 本不可能”、“想必不会”，与m__u__s_t_____的意思刚好相
- 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
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：must do/be
❖ eg. He goes to school with a big bag everyday. He must be a student.
❖ 2、推测正在进行的事：must be doing
❖ eg.The light is off now. He must be sleeping.
3/4/2020
Let's read and translate the sentences!
①She couldn't/can't be so stupid to do that.
她不可能去做那种事吧。
②I may be busy from tomorrow on.
从明天起我可能会忙起来。
③You must be tired after working so long.
情态动词近几年的考查趋势:有效信息越来越隐蔽; 情景越来越生动真实;考查的角度越来越细化综合化。
情态动词近几年的考查要点: 1. 情态动词的基本用法。 2. 情态动词表示推测和可能性,
3. “情态动词+ have done”。
4. 情态ቤተ መጻሕፍቲ ባይዱ词的特定用法。
一 情态动词表推测; 二 情态动词+have done； 三 解题技巧
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
表对过去的猜测
should(ought to) have done shouldn't(oughtn't to havedone could have done need have done needn't have done
❖ ——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.
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.
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
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_本__来__能__够__做__成__某__事___但结果没能做成，含有
遗憾的意味。
We could have faced the difficulty together, but why didn’t you tell me?
❖ _______________的语气次之，译为“很可 能m”ay、（“m应ig该ht”），，指co按ul常d 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.
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
翻译：布什先生做什么事都很准时，他怎么 会开幕式迟到呢？
Even experienced teachers can make mistakes. _即__使__是__有__经__验__的__教__师__也__可__能__出__错__。_______________
Food poisoning can cause death. ___食__物_中__毒__可__导__致_死__亡__。____________________
①It's 8 o'clock now. He
should be in the office now.
②Hi, Mum! I'm on the bus. I
should be home in about ten
minutes.
注：can 有时也用于肯定句中表示推测， 主要用于表示理论上的可能性(即从理论上看是可 能的，但实际未必会发生)，或表示“有时”之意。 如：
你工作这么久以后肯定累了吧。
④She shouldn't be out in such an early morning.
她不会这么一大早就出去。
3/4/2020
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，__m_u__s_t __的语 气最强，译为“肯定”、“准是”、“想必 是s”ho；uld/ought to
❖ 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.
❖ 3、推测过去的事：must have done/been
❖ 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 肯定做过某事 ❖ can't have done 不可能做过某事 ❖ may/might have done 也许做过某事（肯定句） ❖ can have done 也许做过某事(疑问句）
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. 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
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
should表推测时，“按 道理该如此”，一般句末 有时间状语，或有语境暗 示。
Shanghai before it
gets dark. A. shall B. should C. must D. need
表虚拟
1. “should（ought to）+完成式”表示 ____本__应_该__做__某_事__而_实__际__上_没__有__做____。
“shouldn’t（oughtn’t to）+完成式” 表示某种行为
___________不__该__发_生__但_却__发__生_了______。
①Oh, I’m not feeling well in the stomach, I _____ so much fried chicken just now. A. shouldn’t eat
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.