高考情态动词考点.doc

英语语法专题
------ 情态动词
¯一、考点聚焦
1、 情态动词的基本用法
(1)can、be able to 和could
①can和be able to都表示能力，意思上没多大区别。但can只有现在和过去时，而be able to则有更多的形式。但当成功地完成某一具体动作时，通常不用could而用was/were able to来表示。这时was/were able to 相当于managed to，表示经过一番努力，终于能够完成某事。如：
Can you use chopsticks?
The wounded man still was able to get to the village and was saved in the end.
②can和could
can和could都可以表示能力、技能、许可、建议或请求和可能性。但比较委婉客气地提出问题或陈述看法，一般用could，回答时则用can。如：
Could you help me carry the bag?
Can I help you?
(2)may/might
①may/might表示可能，但may比might可能性大。如：-Why isn’t he in class?
He may be sick.(生病的可能性较大)
—
He might be sick.(生病的可能性较小)
②may/might表示“允许”，may用于现在时或将来时，might常用在间接引语中表过去时，但might也可用于现在时间，表示比较委婉的语气，回答用may。如：
He says we may leave.
He said we might leave.
③may / might 表示建议或请求，但might比may 更客气，意思更肯定而无过去时态的含义。
Yes, you can / may.
—May / Might I use your bike? —
No, you mustn’t
（3）must
①must表示必须，应该，没有时态变化。如：
You must do everything as I do.
②must表示肯定的推测。如：
The light is still on, so he must be at home.
③mustn’t 表示禁止做某事。如：
You mustn’t smoke in the office.
（4）have to
have to 表示“必须、不得不”，是由于某种外界（客观）原因而“必须”，“不得不”做某事，也可表示经常的或习惯性的事“必须”做。have to的否定形式表示不必。have to可用于多种时态中。如：
You will have to clean your own boots when you join the army.
I have to be at my office every evening.
（5）should / ought to
①should和ought to表示应当、应该，前者比后者语气轻。如：
You should / ought to work hard.
②should / ought to work hard.
Since she is not here, whe should / ought to be in the classroom.
③should / ought to的否定形式表示禁止之意。如：
Children shouldn’t smoke.
④should可表示陈述意见，推出建议或请求；而ought to可以表示劝告之意。如：
You ought to respect your parents.
He suggested that they should leave at once.
（6）will / would
①will 用于各种人称表示“意志”、“意愿”或“决心”等，否定式won’t + 动词。如：
I will tell you all about it.
Tom won’t do such a thing.
②will用于疑问句中，常用在第二称时表示说话人向对方提出“请求”或“询问”如：
Will you please tell her the news when you see her?
③will 表示习惯性的动作，有“总是”、“惯于”的含义。如：
Fish will die out of water.
④would 表示客气的请求、建议或意愿。如：
Would you please be quiet?
Would you like coffee?
⑤would 表示过去反复发生的动作。如：
When I passed my school I would see my teachers who taught me 5 years ago.
（7）need
need 作“必要”讲，既可作情态动词，也可作实义动词。作实义动词时后面的动词不定式要带to，其变化与一般动词相同。如：
I need to think it over.
—Need you go now? —Yes, I must./No, I needn’t
（8）dare
dare表示“敢”的意思。作为情态动词时，主要用在疑问句和否定句中。dare若作实义动词，后面可带to的不定式，此时to也可以省略。dare与need的用法相似。如：
How dare you say that?
She doesn’t date(to)ask her father.
（9）used to
used to表示过去常常发生的动作或存在的习惯，但现在已不复存在了。如：
He used to smoke.
（10）shall
①shall作为情态动词用于第二、三人称，表示说话人的意愿，有“命令”、“警告、威胁、强制”和“允许”等意思。如：
We shall do as our teacher says.
You shall have the book as soon as I finish it.
②在疑问句中，shall用于征求对方的意见或请求指示，常用于第一、第三人称。如：
Where shall he wait for us?
Shall we go out for a walk?
2、情态动词表示推测或判断的用法

情态动词
对现在和未来的推测
对过去的推测
使 用 场 合
must
must + 动词原形
must have done
肯定句
may / might
may / might + 动词原形
May / might have done
肯定句、否定句
can /could
can / could do
Can / could have done
否定句、疑问名（could可用于肯定句）
should
用来表示一种估计的情况“按理会/估计会”should do/be
should have done
肯定句、否定句、疑问句
例如：
It must have rained last night.
She may not be at home. = It is possible that she is not at home.
She can’t be at home. = It is impossible that she is at home.
They should be there right now.
3、情态动词在虚拟语气中的用法
情态动词用于虚拟语气中表示责备的感情色彩，用法如下：
（1）should have done表示“本来应该做某事而实际上未做”，而shouldn’t have done则表示“本不应该做某事而实际上做了”。如：
You should have told me about it earlier.
You shouldn’t have said such words to your parents.
（2）ought to have done也表示“本应该……”而ought not to have done则意为“本不应该……”。如：
You ought to have told me about it earlier.
You ought not to have said such words to your parents.
（3）needn’t have done表示“本无必要做某事而实际上做了”。如：
You needn’t have walked so quickly since time was enough.
（4）could have done表示“本来有可能……而事实上未做到”。如：
I could have come on time, but my car broke on the way.
ù二、精典名题导解
1. I was really anxious about you. You________home without a word.(NMET 2001)
A.mustn’t have B.shouldn’t have left
C.couldn’t have left D.needn’t have
2.—Are you coming to Jeff’s party?
—I’m not sure. I__________ go to the concert instead.(NMET 2000)
A.must B.would C.should D.might
3. —Will you stay for lunch?
—Sorry, ____________. My brother is coming to see me.(NMET 99)
A.I mustn’t B.I can’t C.I needn’t D.I won’t
解析：答案为B。本题考查表示请求的英语口语，用will来向第二人称提问的疑问结构，是表示一种请求和意愿，是用疑问的形式来表达较为婉转的祈使语气，意思是“请你……，好吗”，对于这种问句的肯定回答是：Suree! Gertainly! Yes, of course. I’d be glad to 等；否定回答通常是：I’m sorry, I can’t. No, I’m afraid I can’t. I’m sorry, but … I’d like to, but …等。注意情态动词表客气的用法及其在一般疑问句中的问与答。
4.—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
5.You be tired－you’ve only been working for an hour.
A. must not B. won’t C. can’t D. may not
6.I often see lights in that empty house. Do you think I report it to the police？
A. should B. whatever C. whichever D. whenever
基础训练
1. If they _________ to do this work, he might do it some other way.
A. were B. should C. will D. can
2. I was told yesterday that the company _________ me to Rome next week for a business conference.
A. should have sent B. were going to send C. should be sending D. should send
3. Let's take a walk, ________? A. will we B. don't we C. do we D. shall we
4. He was a good swimmer so he _________ swim to the river bank when the boat sank.
A. could B. might C. should D. was able to
5. I went to the doctor's yesterday, I had to wait for half an hour before he ________ see me.
A. can B. may C. might D. could
6. ---- _________ this book be yours? ---- No, it ________ not be mine. It ________ be his.
A. Can, must, may B. May, might, must C. Can, may, must D. Must, can, may
7. "We didn't see him at the lecture yesterday. " "He _________ it. "
A. mustn't attend B. can't have attended C. would have not attended D. needed have attended
8. They _________ the plane, or perhaps they have been prevented from coming for some reason.
A. can have missed B. may have missed C. can have lost D. may have lost
9. Since the ground is white, it _________ last night.
A. had snowed B. must have snowed C. must be snowing D. must have been snowing
10. You must be fifty, ________?
A. mustn't you B. needn't you C. aren't you D. mnyn't you
11. You must have seen him off yesterday, _________?
A. haven't you B. didn't you C. mustn't you D. needn't you
12. ---- That must be a mistake. ---- No .it _________ be.
A. can't B. isn't able to C. can D. was able to
13. He had known the matter before you told him, so you _________ have told it to him.
A. mustn't B. can't C. needn't D. shouldn't
14. How ________ so?
A. dare you to say B. dare you say C. do you dare say D. dare to say
15. You are their teacher. You _________ care of them.
A. should to take B. might to take C. ought to take D. need to take
16. She is studying medical science now but she _________ a lawyer.
A. used to be B. would be C. were D. had been
17. If you were in an English-speaking country, you, too, _________ English every day.
A. will be used to speak B. will be used to speaking
C. must be used to speak D. would be used to speaking
18. I did not call to make my airline reservation (预订) but I _________.
A. should have B, may have C. must have D. shall have
19. As a girl, she _________ get up at six every day.
A. would B. will C. might D. should
20. Don't you remember that we _________ to the cinema tonight?
A. would go B. go C. are going D. will be gone
强化训练
21. ---- Shall I tell John about it? ---- No, you _________. I've told him already.
A. needn't B. wouldn't C. mustn't D. shouldn't
22. "Would you mind if I open the window?" “__________”.
A. I don't like it B. Yes .please C. No, please D. No. I'm sorry
23. "Would you tell me something about the affair?" “__________”.
A. Yes .please B. All right C. Not at all D. I do
24. M:________?
T:I'd love to, but I'm afraid I have no time."
M:0h, no. You'll surely come over.
T: It's very nice of you. But I'm sorry I have to go to a meeting.
A. Do you have lunch out in a restaurant B. Shall I have you with me at my birthday
C. Did you go to see the film D. Have you enjoyed yourself at the party
25. "You ought to have come here ten minutes ago?" "Yes, I _________. "
A. ought to B. ought to have C. ought D. have ought to
26. "Would you like to go out for a walk?" "Yes, ___________. "
A. I'd like to B. I'd like C. I'll like to D. I would
27. ________ you succeed !
A. Can B. May C. Must D. Will
28. Did he need ________ then?
A. leave B. to leave C. leaving D. left
29. Do you think if he dares _________ in public.
A. speak B. speaking C. to speak D. spoken
30. He ________ eating American food since he came here.
A. used to B. has been used C. has been used to D. was used to
31. A computer ________ think for itself; it ________ be told what to do.
A. may not, must B. mustn't, might C. shouldn't, could D. can't, must
32. "________ you mind my opening the window?" "Not at all. "
A. Shall B. Should C. Will D. Would
33.1 didn't hear the phone. I _________ asleep.
A. must be B. must have been C. should have been D. could have been
34. You _________ me about it earlier, but you didn't.
A. should have told B. would have told C. must have told D. should tell
35. The teacher told the students that they ________ keep silent in class all the time.
A. ought to not B. ought not to C. ought not to have D. can't
36. "May I go now?" "No, you ________. "
A. mustn't B. needn't C. mightn't D. won't
37. You _________ do the exercise if you don't want to.
A. may not B. can't C. mustn't D. needn't
38. You _________ pay more attention to your spelling next time.
A. would B. should C. will D. shall
39. The girl _________ out alone at night.
A. dare not go B. dare not to go C. dares not go D. does not dare go
40. There ________ be a lot of small houses on both sides of the street.
A. used to B. get used to C. would D. did use to
高考训练
01、Liza ___ well not want to go on the trip --- she hates traveling.
A. will B. can C. must D. may
02、When I was young, I was told that I ______ play with matches
A. wouldn’t B. needn’t C. mustn’t D. daren’t
03、According to the air traffic rules, you ______ switch off your mobile phone before boarding.
A. may B. can C. would D. should
04、She ______ have left school, for her bike is still here.
A. can’t B. wouldn’t C. shouldn’t D. needn’t
05、---I can’t find my purse anywhere. ---You have lost it while shopping.
A. may B. can C. should D. would
06、Peter ______ be really difficult at times even though he’s a nice person in general.
A. shall B. should C. can D. must
07、Thank you for all your hard work last week. I don’t think we ______ it without you.
A. can manage B. could have managed C. could manage D. can have managed
08、—I’m sorry. I ______ at you the other day.—Forget it. I was a bit out of control myself.
A. shouldn’t shout B. shouldn’t have shouted C. mustn’t shout D. mustn’t have shouted
09、What a pity. Considering his ability and experience, he ____ better.
A. need have done B. must have done C. can have done D. might have done
10、You ______ be hungry already — you had lunch only two hours ago!
A. wouldn’t B. can’t C. mustn’t D. needn’t
11、You don’t have to know the name of the author to find a book. You ___ find the book by the title.
A. must B. need C. can D. would
12、–What sort of house do you want to have? Something big?
--Well, it be big--that’s not important.
A. mustn’t B. needn’t C. can’t D. won’t
13、Although this ____ sound like a simple task, great care is needed.
A. must B. may C. shall D. should
14、It is usually warm in my hometown in March, but it _____ be rather cold sometime.
A. must B. can C. should D. would
参考答案：
基础训练
1~5 ABDDD 6~10 CBBBC 11~15 BACBC 16~20 ADAAC
强化训练
21~25 ACBBB 26~30 ABBCC 31~35 DDBAB 36~40 ADBAA
高考训练
1--5DCDAA 6—10CBBDB 11--14CBBB
6