人教英语课件必修三 Unit 2 Healthy eating Grammar情态动词(共36张PPT)

课件36张PPT。情态动词情态动词知多少情态动词有什么样的结构特点？
情态动词很多，每个词的用法也很多，有什么好的分类方法来梳理、归纳吗？
遇到情态动词的题你用什么样的解题思路？情态动词-结构特点他肯定在撒谎，for her face turns red.
He must be telling a lie,
你那天肯定是来监视我的，you jerk.
You must have come to spy on me that day,
你能借给我你的单车吗？
Could you lend me your bike?
1. 情态动词+ do/ be done/ have done/ be doing2. could, would, should等有时不看作过去式mustMust I repeat it again and again？
Citizens must register in order to vote.
Plants must have oxygen in order to live.
You simply must be careful.
If you must leave, do it quietly.
We all must die.
If the lights were on, they must have been at home.canShe can solve the problem easily.
I can play chess, but not very well.
a dictator who can impose his will on the people.
He can change whatever he wishes in the script.
Can I speak to you for a moment?
A coin can land on either side.
He is generally a nice guy, but he can be hard to deal with sometimes.情态动词-分类方法You ought not to use mobile phones in the classroom.
How can a woman be happy with a man who insists on treating her as if she were a perfectly normal human ？
I really cannot believe she should do such a thing to me.
I will do what I can to help those in need.
不应该： 表态度能够、会： 表惊讶居然： 表惊讶、生气会： 表决心、意愿1. 情绪、态度、语气情态动词-分类方法4. He must be in the office, for the light is on.
5. I always wanted to be somebody, but now I realize I should have been more specific.3.本应该： 表虚拟2. 肯定： 表推测情态动词-分类方法表情绪、态度、语气表推测表虚拟能力be able to
can / could
was / were able to 设法成功地做了某事
= managed to do sth.
succeeded in doing sth.现在/过去的能力用于各种时态1. A computer ______ think for itself; it must
be told what to do.
A. can’t B. couldn’t
C. may not D. might not2. The fire spread through the hotel very quickly
but everyone ______ get out.
A. had to B. would
C. could D. was able to各种否定mustn’t
needn’t
can’t
may not
shouldn’t没必要 ( = don’t have to )不准, 禁止不可以; 不可能不可以; 可能不不应该 ( = ought not to )mustn’t/ needn’t1) Smoking must not be allowed in the office.
2) —Must we hand in our exercises today?
—Yes, you must.
—No, you needn’t (you don’t have to).
3) —It must be that naughty boy crying outside.
—It can’t be him, because he has gone to school.3. You ______ return the book now. You can
keep it till next week if you like.
A. can’t B. mustn’t C. needn’t D. may not
4. Johnny, you ______ play with the knife, you
______ hurt yourself.
A. won’t ; can’t B. mustn’t ; may
C. shouldn’t ; must D. can’t ; shouldn’t5. --Will you stay for lunch?
--Sorry, _____. My brother is coming to see me.
A. I mustn’t B. I can’t
C. I needn’t D. I won’t
6. --May I pick a flower in the garden?
-- ________.
A. No, you needn’t B. Not, please.
C. No, you mustn’t D. No, you won’tI will marry you.
Will/ Would you please pass me the book?
Fish will die without water.
Every evening, the old woman would sit in front of the house.
The machine won’t work.will/ would请求、建议，would委婉意志、意愿倾向性、习惯性过去的习惯=used to 不行、不动It is usually warm in my hometown in March, but it _______ be rather cold sometimes.
My iphone isn’t in my bag. Where ______ I have put it?
Though he is clever, he ______ do something foolish.重点难点cancancanought to1) You oughtn’t to make private phone calls in work time.
2) He ought to be there by now.
3) Ought I to write to apologize to her？
4) They ought to come tomorrow, oughtn’t they (= shouldn’t they)?
have to1) My brother was very ill, so I had to call the doctor in the middle of the night.　
2) —Must I finish the task right now？
—Yes, you must. / Yes, you have to.
—No, you needn’t. / No, you don’t have to.
3) You don’t have to tell him about it.
4) —Do you have to go now.
—Yes, I do. You ________ fail to pass the entrance examination if you don’t study harder.
When I was studying in Beijing University, I _________ take a walk along the lake every evening.
My name is Kuwait. ________ I spell it for you?重点难点shallwouldShall小结-情绪、态度、语气1. 按相近、相关语义分2. 按否定形式分3. 按词条意思梳理4. 摘出重点、难点复习1. It has been announced that candidates ______ remain in their seats until all the papers have been collected.（2002上海）
A. can B. will C. may D. shallshall: used to say that something certainly will or must happen or that you are determined that something will happen 复习2. What do you mean, there are only ten tickets? There ______ be twelve.（2009）
A. should B. would
C. will D. shallshould: used to say something is likely or expected to happen复习3. Peter ______ be really difficult at times even though he’s a nice person in general.（2008辽宁）
A. shall B. should C. can D. must复习4. -When can I come for the photos? I need them tomorrow afternoon.
-They ______ be ready by 12:00.（1998）
A. can B. should
C. might D. need复习5. The World Wide Web is sometimes jokingly called the World Wide Wait because it ______ be very slow. （2005浙江）
A. should B. must C. will D. can复习6. -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.（2010江苏）
A. could B. shall C. must D. may表推测It’s ten o’clock. He should be here now.
She must be studying every time you go to see her.
Hurry up, we might have missed the opening part.　It’s ten o’clock. He should be here now.
She must be studying every time you go to see her.
Hurry up, we might have missed the opening part.　现在、将来：情态动词+do正在进行：情态动词+be doing过去：情态动词+have done情态动词+实义动词表推测mustmightmayshouldought tocan’t, 提问couldn’t情态动词+实义动词1. I thought you _____like something to read, so
I have brought you some books.
A. may B. might C. would D. must
2. Where is my pen? I ____________it.
A. might lose B. would have lost
C. should have lost D. must have lost
3. I didn’t hear the phone. I ___________asleep.
A. must be B. must have been
C. should be D. should have been4. ---There were already five people in the car,
but they managed to take me as well.
----It ____a comfortable journey
A. can’t be B. shouldn’t be
C. mustn’t have been D. couldn’t have been
5. It’s nearly seven o’clock . Jack ___be here at
any moment.
A. must B. need C. should D. could
1. 语境解读2. 表意需要3. 搜索情态动词的多种意思表虚拟I was too busy. I should have given you a hand.
It’s Sunday today, Mum. You needn’t have waken me up so early.
If he didn’t bother me, I could have finished the work.I was too busy. I should have given you a hand.
It’s Sunday today, Mum. You needn’t have waken me up so early.
If he didn’t bother me, I could have finished the work.本应该本没必要本能够2. -Do you know where David is? I couldn’t find him anywhere.
-Well . He have gone far—his coat’s still here. （2005湖北）
A. shouldn’t B. mustn’t
C. can’t D. wouldn’t3. He did not regret saying what he did but felt that he it differently. （2009江苏）
A. could express
B. would express
C. could have expressed
D. must have expressed
4. -Sorry, Professor Smith. I didn’t finish the assignment yesterday.
-Oh, you have done it as yesterday was the deadline.（2010上海）
A. must B. mustn’t
C. should D. shouldn’t5. The weather turned out to be fine yesterday. I the trouble to carry my umbrella with me.（2006江西）
A. should have taken
B. could have taken?
C. needn’t have taken ?
D. mustn’t have taken1. 语境解读2. 表意需要3. 搜索情态动词的多种意思解题思路