【备考2018】英语3年中考2年模拟一轮专题复习学案第九讲 情态动词 原卷
情态动词在历年的中考测试中既是中考热点，也是中考难点。在中考中，除了对情态动词的基本意义和用法进行考查外，还加强了对具有相同功能、意思相近的情态动词用法的考查，尤其情态动词表推测的用法是此部分的重要考点，也是学生在中考中的高分瓶颈。下面，就情态动词表推测的用法从不同角度结合试题进行分析，来突破此难点。21世纪教育网版权所有
情态动词的类型和特征
思维导图记知识点
情态动词的类型
只作情态动词的有：must; can (could); may (might)；
2. 可作情态动词也可作实义动词的有：need；
3.可作情态动词也可作助动词的有：will (would); shall (should)；
4.具有情态动词的某些特征的有：have to; ought to
(二)情态动词的特征：
1.有一定的词义,但不能单独作谓语,必须和行为动词或系动词连用，构成谓语。
2. 无人称和数的变化 (have to例外,用于第三人称单数时用has to)。
We must stay here. /He must stay here. 他必须呆在这儿。
We have to walk home. /He has to walk home. 他不得不步行回家。www.21-cn-jy.com
3. 后接动词原形: She may lose her way. 她可能迷路了。
4. 具有助动词的作用，可用来构成否定句、疑问句及用于简明答语。
- Can you sing an English song? 你会唱英语歌吗？- Yes, I can. 是的，我会。21·世纪*教育网
情态动词的用法
(一) can, could的用法
1. 表示能力，译为：能，会。如: Can you play basketball? 你会打篮球吗？21教育名师原创作品
2. 表怀疑、猜测，常用于否定句和疑问句中。如:He can’t be in the room.他不可能在房间里。
3. 表请求或允许，多用于口语中,意为“可以”,相当于may。 如:You can (may) go now. 你现在可以走了。
4. could是can的过去式,可以表示过去的能力.如: I could swim when I was seven years old.
5. 以can开头的一般疑问句，其肯定回答和否定回答分别用can和can’t。
(二) may的用法 1.表推测,意为“可能;也许”,用于肯定句中.如: He may come tomorrow.他明天可能会来。
2. 表请求、许可，意为“可以” 如: May I borrow your book? 我可以借用你的书吗？
may表请求，用于主语为第一人称的一般疑问句时，其否定回答用mustn’t，不用may not，意为“不可以，不许，禁止”。如: - May I go now? - No, you mustn’t. 不可以。/Yes, you may(can). 是，可以。
3. (1) 表祝愿。 如: May you succeed. 祝你成功。
(2) can和may 均可用来表示征求意见或允许，意为“可以”，一般可互换使用。
(三) must的用法:1. 表示“必须、应该”。
2. 表示推测，意为“一定”，一般用于肯定句。在疑问句和否定句一般应用can，否定句中也用may，但may not表示“可能不”，而can’t 表示“不可能”。【来源：21·世纪·教育·网】
- There’s someone knocking on the door. 有人敲门。 - It must be Jim. 肯定是吉姆。
※3. 在否定句中，mustn’t表示禁止，意为“不允许”。以must开头的疑问句，肯定回答应用must，而否定回答则常用needn’t，意为“不需要、不必”，相当于don’t have to, 而不能用mustn’t。。
- Must I finish the work today? 我今天必须完成这项工作吗？
- No, you needn’t/You don’t have to. 不，你不必/ Yes, you must.
(四) 对need词性的判断: need后加to do说明need为实义动词，用助动词提问或否定；need后加doing表被动；若need后加动词原形, 则need为情态动词，用need提问或否定，肯定回答用must，否定回答用needn’t。 如:You needn’t come to school so early. 你不必这么早来学校。
(五) had better的用法: had better+动词原形，表示最好做某事，否定式用had better not do sth.。
You’d better stay at home. 你最好呆在家里/You’d better not watch TV every day.你最好不要每天看电视。
(六) shall (should), will (would)的用法
1. Shall用于第一人称，表示征求意见、询问。 如:Shall I open the window? 我打开窗户好吗？
Shall we have lunch here? 我们在这儿吃饭好吗？
2. Should常用来表示义务、责任。如: We should obey traffic laws. 我们应该遵守交通规则。
3. will 用于第二人称表示询问,请求,也可以表达现在的“意愿”
如:Will you pass me the book? 你能把这本书递给我吗？/ We will do anything for you.
4. would 用来表示过去的意愿或委婉的询问。
Would you tell me the way to the station? 你能告诉我去车站的路吗?2-1-c-n-j-y
三、情态动词易混点
（一）．can和be able to : can 和be able to表示能力时用法相同，can只用于现在时和过去式(could)，但 be able to表示经过努力后, 能够做到有现在时,过去时和将来时。【出处：21教育名师】
如:We will be able to come back next week. 我们下周能回来。21*cnjy*com
The fire spread through the hotel very quickly but everyone was able to get out. （表示经过努力后, 能够做到）
Jim couldn’t speak Chinese last year, but now he can. 吉姆去年不会说汉语，但现在他会了。
（二）、can 和may 表可能性的区别
1.在肯定句中,用may表可能You had better ask the policeman. He may know.你最好问警察,他可能知道。
2. 在否定句中，若语气肯定，表示“不可能”时用can not；若语气不肯定，表示“可能不”时用may not。
Mr Li can’t be in the room. He has gone to Beijing for a visit.李老师不可能在，他去北京度假了。
（三）、could, should, would, might表示委婉语气
could, should, would, might等过去式有时不表示过去，而是表示更委婉客气的语气。
Would you tell me the way to the park? 你能告诉我去公园的路吗？
（四）、must和have (has) to： must和have (has) to 意思均为“必须”，常可以互换使用。但have (has) to用于强调客观需要，意为“必须，不得不”；must用于表示主观看法，意为“必须，应该”。
We’ll have to ask Zhang Hong instead. /We must work hard at school.
（五）、maybe和may be
may为情态动词，后加动词原形be，用在句中;maybe为副词,“大概，也许”,相当于perhaps,用于句首。
（六）、can’t和mustn’t: 表否定推测时应用can’t, mustn’t表达“禁止、不允许”的含义，不是用来表推测的，在肯定句中must表推测，译为“一定”。
（七）．（补充）should have done 本应该做的事情但未做含有责备之意
如：I told Lily how to get here, but perhaps I should have written it out. needn’t have done 本没必要做但却做了sth
考点一：must表推测
典例1： (2016上海) It____ have been Tom that parked the car here, as he is the only one with a car.
A. may B. can C. must D. should
【解析】依据语境中信息句as he is the only one with a car，must表示对过去事实有把握的肯定推测。
【答案】C
举一反三
1. You ______ play with fire, Tom. It’s very dangerous.
A. needn’t B. may not C. mustn’t D. wouldn’t
2. After such a long journey, the children ______ be very tired now.
A. can B. must C. have to D. need
3. --______ we swim in that river? –No, you ______. It’s dangerous to swim there.
A. Must, can’t B. Can, may not C. Shall, don’t D. May, mustn’t
考点二：can表推测
典例2： –I think Miss Gao must be in the library. She said she would go there.21*cnjy*com
--No, she ______ be there. I have just been there.
A. can’t B. mustn’t C. needn’t D. wouldn’t
【解析】表示否定的“不可能”要用can’t, 而mustn’t表示“禁止”的意思。
【答案】A
举一反三
1. –Can you answer my question, Lily? –Yes, I ______.
A. may B. need C. must D. can
2. –Could I look at your pictures? –Yes, of course you ______.
A. could B. can C. will D. might
3. (2017·甘肃白银·10)—I wonder if these are Danny's glasses.
—They________be Danny's. He doesn't wear glasses.
can't B. must C. mustn't D. can
4. (2017·山东滨州·31)—Could I invite my friends to the party on Saturday，Mom?
—Of course you ________. That sounds like fun.
A. may B. could C. must D. can
考点三：may表推测
典例3：2. (2017·甘肃兰州· 30)—Will Jim fly to Taiwan for a holiday?
—He ________ try. In fact, it depends on how much the journey costs.
A. may B. has to C. need D. must
【解析】根据“it depends on how much the journey costs”这取决于这个旅行的费用，可知他并没有确定，因此用may，可能。
【答案】A
举一反三
1. (2017·辽宁大连·8)—Have you decided where to spend your holiday?2·1·c·n·j·y
—Not yet. We ________ go to Beijing.
may B. must C. should D. need
2. (2017·天津· 37)When you are travelling，bring a map because it ________ help you.
A. can't B. mustn't C. used to D. may
3. (2017·安徽·39)—Mum，I've signed for the box. What's in it?
—I'm not sure. It ________ be a present from your uncle.
need B. must C. may D. will
考点四：should表推测
典例4：. You’ve made the same mistakes again. You ______ be more careful next time.www-2-1-cnjy-com
A. can B. may C. had to D. should
11. D should表示建议“应当”。
举一反三
1. (2017·河南·28)—I don't care what people think.
—Well，you ________. You're not alone in this world.21教育网
can B. may C. should D. will
2. (2017·广东·34)To keep children safe，we ________ put the things like knives and medicine away in our house.
A. may B. should C. can D. might
3. (2017·江苏苏州· 11)Dogs ________ run through soccer games at the park. It's dangerous!
A. should B. shouldn't C. need D. needn't
1. (2017·山东德州· 32)In some countries，people ________ download(下载) music from the Internet without paying，because it's against the law.
A. wouldn't B. needn't C. mustn't D. couldn't
2. (2017·湖南长沙· 27)—Philips，________you make so much noise when your little sister is sleeping?
—Sorry，Mom. I'll stop right away.
A can B. may C. must
3. (2017·山东临沂·20)The little boy has just had lunch. He ________ be hungry already.
A. must B. mustn't C. can D. can't
4. (2017·湖北十堰·30)—Must I hand in my book report today，Mr. Brown?
—No，you ________. The book report is due in two weeks.
can't B. mustn't C. shouldn't D. needn't
5. (2017·山东烟台·25)You________set out alone，or you________get lost in the jungle.
A. needn't；may B. mustn't；might C. can't；need D. mustn't；must21·cn·jy·com
6. (2017· 重庆A卷·26)—May I take the dog with me，sir?
—________. Pets are not allowed to enter the hall.
Yes，you may B. No，you mustn't C. Yes，you can D. No，you needn't
7. (2017·福建· 28)—Mum，may I go swimming now?
—Yes，dear，but remember that you ________ go with your dad.
may B. can C. must
8. (2017·湖北黄石·27)—Janet is sleeping at home.
—She ________ be. I went for a walk with her just now.
can't B. mustn't C. needn't D. won't
9. (2017·湖北鄂州·29)—The tall man with glasses over there looks like our math teacher.
—It ________ be him. He has gone abroad.
may not B. mustn't C. can't D. needn't
10. (2017·重庆B卷·36)—Robert，could you wash the car for me?
—Yes，I________. I'm coming，dad.
could B. couldn't C. can D. can't
11. (2017·黑龙江哈尔滨·14)—Must I prepare for the trip today?
—No，you________ prepare for it today. You can do it tomorrow.
need B. don't need C. needn't
12. (2017·湖北宜昌·32)—Life is becoming convenient with the Internet.21cnjy.com
—That's true! Almost everything ________ be done online.
must B. would C. should D. can
13. (2017·湖北孝感·32)Look at the “No Photos” sign. You ________ take photos in the art museum.
A. should B. can C. needn't D. mustn't
14. (2017·湖北武汉·35)—Have you got the results of the exam?
—No. All we________ do now is to wait.
must B. can C. may D. could
15. (2017·山东菏泽·26)Life is very valuable，so we should always remember safety ________ come first wherever we are.
A. can B. must C. may
16. (2017·新疆阜康·29)—Look! The man at the gate ________ be our headmaster. He is always standing there every morning.
—No，it ________ be him. He is holding a meeting in the office now.
must；can't B. must；mustn't C. can't；can't D. can't；mustn't
17. (2017·河北· 30)1 have travelled a lot. I ________ speak four languages.
A. can B. may C. must D. need
18. (2017·四川成都· 36)This pair of glasses________ be Tony's. He's the only one who wears glasses.
A. must B. might C. can't
19. (2017·吉林长春· 22)—Is the man in the car John?
—No，it ________ be him. He went to Xi'an on business yesterday.【来源：21cnj*y.co*m】
can't B. must C. mustn't D. could
20. (2017·江苏淮安· 5)The tree is too high that I ________ touch the apples on it.
A. can't B. mustn't C. shouldn't D. needn't
1. (2017·江苏南通·8)—The experiment seems difficult. Would you mind doing it for me?
—Why not do it by yourself? I ________ show you how to do it if necessary.
A. can B. needn't C. must D. shouldn't
2. (2017·浙江温州· 7)—We've ordered too much food. I ________ eat any more.
—Never mind. Let's take it home.
can't B. mustn't C. needn't D. shouldn't
3. (2017·江苏连云港· 6)—Could I ride an electric bicycle to school，Mr. Wang?
—No，you________. Students under the age of 16 aren't allowed to ride electric bicycles.
couldn't B. needn't C. can't D. shouldn't
4. (2017·江苏泰州· 10)Now most young people like shopping online because they ________ spend a lot of time going from shop to shop.
A. needn't B. can't C. mustn't D. shouldn't
5. (2017·江苏宿迁·4)—Is Mike coming to the fashion show tomorrow?
—I'm not sure. He ________ not come.
must B. can C. may D. should
6. (2017·江苏盐城· 4)When a virus comes into our body，we get ill. The same thing ________also happen to a computer.
A. should B. need C. can D. must
(2017·江苏扬州· 4)—All done! Let's swim，Martine!
—Swimming! I just ________ get used to it in winter.
A. can't B. shouldn't C. mustn't D. needn't
8. (2017·山东青岛· 12)We should keep quiet in the cinema. We ________ speak loudly.【版权所有：21教育】
A. can B. must C. needn't D. mustn't
9. (2017·北京· 25)—________ I hand in the report today?
—No，you needn't.
A. Can B. Must C. Shall D. Could
10. (2017·江苏常州· 5)—Will Dad be back home at 6 o'clock this evening?
—He should，but he ________ not. Sometimes he exercises after work.
can B. must C. need D. may
11. (2017·上海·41)—________ I park my car here for a while?
—No，you mustn't. Do you see the sign “NO PARKING”？
A. Would B. May C. Must D. Should
12. (2017·辽宁营口·18)—We've got everything ready for the trip.
—You mean I ________ bring anything with me，right?
can't B. mustn't C. needn't D. couldn't
13. (2017·江苏无锡·10)Life is like riding a bicycle. To keep your balance，you ________ keep moving.
A. can B. must C. can't D. mustn't
14. (2017·湖北咸宁· 35)—It's said that nuclear power will be used to produce electricity in Xianning.
—However，nuclear power ________ be very dangerous.
can B. need C. must D. should
15. --Let’s go to Taishan Park by taxi. –It’s not far. We ______ take a taxi.
A. needn’t B. can’t C. mustn’t D. couldn’t
【备考2018】英语3年中考2年模拟一轮专题复习学案第九讲 情态动词 解析卷
情态动词在历年的中考测试中既是中考热点，也是中考难点。在中考中，除了对情态动词的基本意义和用法进行考查外，还加强了对具有相同功能、意思相近的情态动词用法的考查，尤其情态动词表推测的用法是此部分的重要考点，也是学生在中考中的高分瓶颈。下面，就情态动词表推测的用法从不同角度结合试题进行分析，来突破此难点。2-1-c-n-j-y
情态动词的类型和特征
思维导图记知识点
情态动词的类型
只作情态动词的有：must; can (could); may (might)；
2. 可作情态动词也可作实义动词的有：need；
3.可作情态动词也可作助动词的有：will (would); shall (should)；
4.具有情态动词的某些特征的有：have to; ought to
(二)情态动词的特征：
1.有一定的词义,但不能单独作谓语,必须和行为动词或系动词连用，构成谓语。
2. 无人称和数的变化 (have to例外,用于第三人称单数时用has to)。
We must stay here. /He must stay here. 他必须呆在这儿。
We have to walk home. /He has to walk home. 他不得不步行回家。21教育网
3. 后接动词原形: She may lose her way. 她可能迷路了。
4. 具有助动词的作用，可用来构成否定句、疑问句及用于简明答语。
- Can you sing an English song? 你会唱英语歌吗？- Yes, I can. 是的，我会。【版权所有：21教育】
情态动词的用法
(一) can, could的用法
1. 表示能力，译为：能，会。如: Can you play basketball? 你会打篮球吗？
2. 表怀疑、猜测，常用于否定句和疑问句中。如:He can’t be in the room.他不可能在房间里。
3. 表请求或允许，多用于口语中,意为“可以”,相当于may。 如:You can (may) go now. 你现在可以走了。
4. could是can的过去式,可以表示过去的能力.如: I could swim when I was seven years old.
5. 以can开头的一般疑问句，其肯定回答和否定回答分别用can和can’t。
(二) may的用法 1.表推测,意为“可能;也许”,用于肯定句中.如: He may come tomorrow.他明天可能会来。
2. 表请求、许可，意为“可以” 如: May I borrow your book? 我可以借用你的书吗？
may表请求，用于主语为第一人称的一般疑问句时，其否定回答用mustn’t，不用may not，意为“不可以，不许，禁止”。如: - May I go now? - No, you mustn’t. 不可以。/Yes, you may(can). 是，可以。
3. (1) 表祝愿。 如: May you succeed. 祝你成功。
(2) can和may 均可用来表示征求意见或允许，意为“可以”，一般可互换使用。
(三) must的用法:1. 表示“必须、应该”。
2. 表示推测，意为“一定”，一般用于肯定句。在疑问句和否定句一般应用can，否定句中也用may，但may not表示“可能不”，而can’t 表示“不可能”。21cnjy.com
- There’s someone knocking on the door. 有人敲门。 - It must be Jim. 肯定是吉姆。2·1·c·n·j·y
※3. 在否定句中，mustn’t表示禁止，意为“不允许”。以must开头的疑问句，肯定回答应用must，而否定回答则常用needn’t，意为“不需要、不必”，相当于don’t have to, 而不能用mustn’t。。
- Must I finish the work today? 我今天必须完成这项工作吗？
- No, you needn’t/You don’t have to. 不，你不必/ Yes, you must.
(四) 对need词性的判断: need后加to do说明need为实义动词，用助动词提问或否定；need后加doing表被动；若need后加动词原形, 则need为情态动词，用need提问或否定，肯定回答用must，否定回答用needn’t。 如:You needn’t come to school so early. 你不必这么早来学校。
(五) had better的用法: had better+动词原形，表示最好做某事，否定式用had better not do sth.。
You’d better stay at home. 你最好呆在家里/You’d better not watch TV every day.你最好不要每天看电视。
(六) shall (should), will (would)的用法
1. Shall用于第一人称，表示征求意见、询问。 如:Shall I open the window? 我打开窗户好吗？
Shall we have lunch here? 我们在这儿吃饭好吗？
2. Should常用来表示义务、责任。如: We should obey traffic laws. 我们应该遵守交通规则。
3. will 用于第二人称表示询问,请求,也可以表达现在的“意愿”
如:Will you pass me the book? 你能把这本书递给我吗？/ We will do anything for you.
4. would 用来表示过去的意愿或委婉的询问。
Would you tell me the way to the station? 你能告诉我去车站的路吗?
三、情态动词易混点
（一）．can和be able to : can 和be able to表示能力时用法相同，can只用于现在时和过去式(could)，但 be able to表示经过努力后, 能够做到有现在时,过去时和将来时。
如:We will be able to come back next week. 我们下周能回来。
The fire spread through the hotel very quickly but everyone was able to get out. （表示经过努力后, 能够做到）
Jim couldn’t speak Chinese last year, but now he can. 吉姆去年不会说汉语，但现在他会了。
（二）、can 和may 表可能性的区别
1.在肯定句中,用may表可能You had better ask the policeman. He may know.你最好问警察,他可能知道。
2. 在否定句中，若语气肯定，表示“不可能”时用can not；若语气不肯定，表示“可能不”时用may not。
Mr Li can’t be in the room. He has gone to Beijing for a visit.李老师不可能在，他去北京度假了。
（三）、could, should, would, might表示委婉语气
could, should, would, might等过去式有时不表示过去，而是表示更委婉客气的语气。
Would you tell me the way to the park? 你能告诉我去公园的路吗？
（四）、must和have (has) to： must和have (has) to 意思均为“必须”，常可以互换使用。但have (has) to用于强调客观需要，意为“必须，不得不”；must用于表示主观看法，意为“必须，应该”。
We’ll have to ask Zhang Hong instead. /We must work hard at school.【来源：21cnj*y.co*m】
（五）、maybe和may be
may为情态动词，后加动词原形be，用在句中;maybe为副词,“大概，也许”,相当于perhaps,用于句首。
（六）、can’t和mustn’t: 表否定推测时应用can’t, mustn’t表达“禁止、不允许”的含义，不是用来表推测的，在肯定句中must表推测，译为“一定”。
（七）．（补充）should have done 本应该做的事情但未做含有责备之意
如：I told Lily how to get here, but perhaps I should have written it out. needn’t have done 本没必要做但却做了sth
考点一：must表推测
典例1： (2016上海) It____ have been Tom that parked the car here, as he is the only one with a car.
A. may B. can C. must D. should
【解析】依据语境中信息句as he is the only one with a car，must表示对过去事实有把握的肯定推测。
【答案】C
举一反三
1. You ______ play with fire, Tom. It’s very dangerous.
A. needn’t B. may not C. mustn’t D. wouldn’t
【解析】mustn’t表示禁止，前句意思是“汤姆，你千万不能玩火。”
【答案】C
2. After such a long journey, the children ______ be very tired now.
A. can B. must C. have to D. need
【解析】 must 用于肯定句中表示推测“一定，准是”。
【答案】B
3. --______ we swim in that river? –No, you ______. It’s dangerous to swim there.
A. Must, can’t B. Can, may not C. Shall, don’t D. May, mustn’t
【解析】 May I / we…是请求对方许可的句型。Mustn’t表示禁止
【答案】D
考点二：can表推测
典例2： –I think Miss Gao must be in the library. She said she would go there.
--No, she ______ be there. I have just been there.
A. can’t B. mustn’t C. needn’t D. wouldn’t
【解析】表示否定的“不可能”要用can’t, 而mustn’t表示“禁止”的意思。
举一反三
1. –Can you answer my question, Lily? –Yes, I ______.
A. may B. need C. must D. can
【解析】对于can的一般疑问句常用can来回答。
【答案】D
2. –Could I look at your pictures? –Yes, of course you ______.
A. could B. can C. will D. might
【解析】could I …句型的回答要用can而不用could
【答案】B
3. (2017·甘肃白银·10)—I wonder if these are Danny's glasses.
—They________be Danny's. He doesn't wear glasses.
can't B. must C. mustn't D. can
【解析】由下文“他不戴眼镜。”可知它们不可能是丹尼的。情态动词表示肯定推测用must；表示否定推测用can't。故选A。
【答案】A
4. (2017·山东滨州·31)—Could I invite my friends to the party on Saturday，Mom?
—Of course you ________. That sounds like fun.
A. may B. could C. must D. can
【解析】Could I．..？用于向对方发出请求，意为“我可以……吗？”。对方若接受请求，常回答Yes/Sure，you can.。
【答案】D
考点三：may表推测
典例3：2. (2017·甘肃兰州· 30)—Will Jim fly to Taiwan for a holiday?21·世纪*教育网
—He ________ try. In fact, it depends on how much the journey costs.
A. may B. has to C. need D. must
【解析】根据“it depends on how much the journey costs”这取决于这个旅行的费用，可知他并没有确定，因此用may，可能。
【答案】A
举一反三
1. (2017·辽宁大连·8)—Have you decided where to spend your holiday?
—Not yet. We ________ go to Beijing.
may B. must C. should D. need
【解析】由答语前句“还没决定呢。”可知，我们可能去北京(度假)。may表示猜测，意为“可能”符合句意；而must“必须”，should“应该”，need“需要”均与句意不符。故选A。
【答案】A
2. (2017·天津· 37)When you are travelling，bring a map because it ________ help you.
A. can't B. mustn't C. used to D. may
【解析】句意：当你旅行时，带一幅地图，因为它可能对你有帮助。表示“可能，也许”应用may。故选D。
【答案】D
3. (2017·安徽·39)—Mum，I've signed for the box. What's in it?www.21-cn-jy.com
—I'm not sure. It ________ be a present from your uncle.
need B. must C. may D. will
【解析】句意：——妈妈，我已经签收了这个盒子，里面是什么？——我不确定，它或许是你舅舅寄来的礼物。need需要；must一定，表命令；may或许，表推测；will将，表将来。从答语第一句可知，应答者对盒子里的东西不肯定，因此这里表“推测”。故选C。
【答案】C
考点四：should表推测
典例4：. You’ve made the same mistakes again. You ______ be more careful next time.
A. can B. may C. had to D. should
11. D should表示建议“应当”。
举一反三
1. (2017·河南·28)—I don't care what people think.
—Well，you ________. You're not alone in this world.
can B. may C. should D. will
【解析】句意：——我不在乎人们怎么想。——呃，你应该(在乎)。在这个世界上你并不是孤立的一个人。由后一句内容可知答案选C。
【答案】C
2. (2017·广东·34)To keep children safe，we ________ put the things like knives and medicine away in our house.
A. may B. should C. can D. might
【解析】根据前句“为了保护孩子们的安全”可推知，此空用“应该”来加强语气，表示“我们应该将像刀子和药物这样的东西收起来”。
【答案】B
3. (2017·江苏苏州· 11)Dogs ________ run through soccer games at the park. It's dangerous!
A. should B. shouldn't C. need D. needn't
【解析】句意：狗不应该在公园里的足球比赛中跑来跑去，这很危险。表示“不应该”应用shouldn't。
【答案】B
1. (2017·山东德州· 32)In some countries，people ________ download(下载) music from the Internet without paying，because it's against the law.
A. wouldn't B. needn't C. mustn't D. couldn't21·cn·jy·com
【解析】句意：有些国家不允许人们不经付款就从网上下载音乐，因为这是违反法律的。mustn't相当于not have to，意为“不允许”。故选C。
【答案】C
2. (2017·湖南长沙· 27)—Philips，________you make so much noise when your little sister is sleeping?
—Sorry，Mom. I'll stop right away.
A can B. may C. must
【解析】句意：——菲利普，当你的小妹妹睡觉的时候，你一定要如此吵吗？——抱歉，妈妈。我立刻停止。根据题意“你一定要……”，可知选C。
【答案】C
3. (2017·山东临沂·20)The little boy has just had lunch. He ________ be hungry already.
A. must B. mustn't C. can D. can't
【解析】句意：这个小男孩刚刚吃过午饭，他不可能饿了。表示否定推测，使用can't。故选D。
【答案】D
4. (2017·湖北十堰·30)—Must I hand in my book report today，Mr. Brown?
—No，you ________. The book report is due in two weeks.
can't B. mustn't C. shouldn't D. needn't
【解析】句意：——我必须在今天上交读书报告吗，布朗先生？——不，不必。读书报告在两周内上交。回答以Must I．..？开头的一般疑问句时，否定回答常用needn't或don't have to，表示“不必”。故选D。
【答案】D
5. (2017·山东烟台·25)You________set out alone，or you________get lost in the jungle.
A. needn't；may B. mustn't；might C. can't；need D. mustn't；must
【解析】句意：你不应该独自一人出发，否则你可能会在丛林中迷路。根据第二句“get lost in the jungle”在丛林中迷路，可知，你不应该独自一人出发，排除A和C；独自一人出发，在丛林中也不是一定迷路，只是可能迷路。故选B。
【答案】B
6. (2017· 重庆A卷·26)—May I take the dog with me，sir?
—________. Pets are not allowed to enter the hall.
Yes，you may B. No，you mustn't C. Yes，you can D. No，you needn't
【解析】句意：——先生，我可以带上这条狗吗？——不行。宠物是不允许进入大厅的。从“Pets are not allowed to enter the hall.”可知，宠物是不允许进入大厅的。可以判断前面回答应是否定，故先排除A，C；根据题意选B。
【答案】B
7. (2017·福建· 28)—Mum，may I go swimming now?
—Yes，dear，but remember that you ________ go with your dad.
may B. can C. must
【解析】句意：——妈妈，我现在可以去游泳吗？——可以，亲爱的，但是记住你必须和你爸爸一起去。may可以，可能；can能；must必须。 结合第二句的语境可知，这里表示严格的要求，故选C。
【答案】C
8. (2017·湖北黄石·27)—Janet is sleeping at home.
—She ________ be. I went for a walk with her just now.21*cnjy*com
can't B. mustn't C. needn't D. won't
【解析】句意：——Janet正在家里睡觉。——不可能。我刚刚和她散步的。根据答句表达的语境可知，空处表示“不可能”，故A项正确。B项意为“禁止”；C项意为“不需要”；D项意为“不会……”。故选A。
【答案】A
9. (2017·湖北鄂州·29)—The tall man with glasses over there looks like our math teacher.
—It ________ be him. He has gone abroad.
may not B. mustn't C. can't D. needn't
【解析】句意：——那边那个戴眼镜的高个男子看起来像我们的数学老师。——不可能是他。他出国了。既然他出国了，那肯定不可能是他。can't表示否定推测，意为“不可能”。故选C。
【答案】C
10. (2017·重庆B卷·36)—Robert，could you wash the car for me?
—Yes，I________. I'm coming，dad.
could B. couldn't C. can D. can't
【解析】以could引导的表示请求的疑问句，肯定回答用can，否定回答用can't；本句为肯定回答，故选C。
【答案】C
11. (2017·黑龙江哈尔滨·14)—Must I prepare for the trip today?
—No，you________ prepare for it today. You can do it tomorrow.
need B. don't need C. needn't
【解析】句意：——今天我必须得为郊游做些准备吗？——不，今天你________准备。你可以明天准备。need需要；don't need其后加to，不需要；needn't不需要，没必要。由后文“You can do ...”可知，此处指“今天没必要准备”。故选C。
【答案】C
12. (2017·湖北宜昌·32)—Life is becoming convenient with the Internet.
—That's true! Almost everything ________ be done online.21世纪教育网版权所有
must B. would C. should D. can
【解析】句意：——拥有了因特网，生活变得更便捷。——的确！几乎所有的事情都能在网上办理。must必须；would将会；should应该；can能够。故选D。【出处：21教育名师】
【答案】D
13. (2017·湖北孝感·32)Look at the “No Photos” sign. You ________ take photos in the art museum.
A. should B. can C. needn't D. mustn't
【解析】句意：看“禁止拍照”的标牌，你不可以在艺术馆拍照。表示“禁止、一定不要”用mustn't。故选D。
【答案】D
14. (2017·湖北武汉·35)—Have you got the results of the exam?
—No. All we________ do now is to wait.
must B. can C. may D. could
【解析】must必须；can能，可以；may可以，语气较委婉；could可表示委婉的请求，意为“可以”。由答语“No”及时间状语“now”可知，我们现在能做的是等待。故选B。
【答案】B
15. (2017·山东菏泽·26)Life is very valuable，so we should always remember safety ________ come first wherever we are.
A. can B. must C. may
【解析】句意：生命是宝贵的，因此我们应该总是记住无论我们身处何地，安全________是第一位的。can能够，可能；must必须；may可以，可能，由首句可知，生命既然如此宝贵，因此安全必须是第一位。故选B。
【答案】B
16. (2017·新疆阜康·29)—Look! The man at the gate ________ be our headmaster. He is always standing there every morning.
—No，it ________ be him. He is holding a meeting in the office now.
must；can't B. must；mustn't C. can't；can't D. can't；mustn't
【解析】句意：——看，那个在门口的人________是我们的校长，他每天早上都站在那里。——不，________是他，现在他正在办公室里开会。 must一定，表示推测；can't不可能，绝对不会，表示推测。此处表示推测，根据前句他每天早上都站在那里应用must。后句根据现在他正在办公室里开会，应用can't。
【答案】A
17. (2017·河北· 30)1 have travelled a lot. I ________ speak four languages.
A. can B. may C. must D. need
【解析】句意：我经常旅行。我能够说四种语言。本句强调说话的能力。故选A。
【答案】A
18. (2017·四川成都· 36)This pair of glasses________ be Tony's. He's the only one who wears glasses.
A. must B. might C. can't
【解析】句意：这副眼镜肯定是托尼的。他是班里唯一戴眼镜的同学。must表示十分肯定的推测；might表示把握性不大的猜测，意为“可能”；can't表示否定的推测，意为“不可能”。由下句中的“the only one who wears glasses”可知用must。故选A。
【答案】A
19. (2017·吉林长春· 22)—Is the man in the car John?
—No，it ________ be him. He went to Xi'an on business yesterday.
can't B. must C. mustn't D. could
【解析】根据句意可知，此处使用情态动词表示猜测和判断，再根据后面提供的语境“他昨天去西安出差了。”可知，车里那个人“不可能”是John，can't 此处是不可能，mustn't是“禁止，千万不可”。故选A。
【答案】A
20. (2017·江苏淮安· 5)The tree is too high that I ________ touch the apples on it.【来源：21·世纪·教育·网】
A. can't B. mustn't C. shouldn't D. needn't
【解析】句意：这棵树太高了，我够不到上面的苹果。前文“如此高”提示下文用情态动词can't“不能”表示能力。
【答案】A
1. (2017·江苏南通·8)—The experiment seems difficult. Would you mind doing it for me?
—Why not do it by yourself? I ________ show you how to do it if necessary.21教育名师原创作品
A. can B. needn't C. must D. shouldn't
【解析】句意：——这个实验似乎挺难的，你愿意帮我做吗？——为什么不自己做呢？如果有必要的话，我能给你展示怎么做。can表“能，能够，可以”；needn't表“不需要”；must表“必须”；shouldn't表“不应该”。只有A项符合句意。
【答案】A
2. (2017·浙江温州· 7)—We've ordered too much food. I ________ eat any more.
—Never mind. Let's take it home.
can't B. mustn't C. needn't D. shouldn't
【解析】句意：——我们已点了太多的食物。我不能(can't)再吃了。——没关系。咱们把它带回家。故选A。
【答案】A
3. (2017·江苏连云港· 6)—Could I ride an electric bicycle to school，Mr. Wang?
—No，you________. Students under the age of 16 aren't allowed to ride electric bicycles.
couldn't B. needn't C. can't D. shouldn't
【解析】句意：——王老师，我可以骑电动车去上学吗？——不，你不能。16岁以下的学生不允许骑电动车。couldn't用于过去时态的“不能”；needn't没必要；can't不能，不可以；shouldn't不应该。根据后面的“不允许”可知，“不可以”骑电动车去上学。故选C。www-2-1-cnjy-com
【答案】C
4. (2017·江苏泰州· 10)Now most young people like shopping online because they ________ spend a lot of time going from shop to shop.
A. needn't B. can't C. mustn't D. shouldn't
【解析】句意：现在多数年轻人喜欢网购，因为这样他们就不必把时间花费在来回逛商店上。needn't 不必；can't 不能；mustn't 不可以；shouldn't 不应该。故选A。
【答案】A
5. (2017·江苏宿迁·4)—Is Mike coming to the fashion show tomorrow?
—I'm not sure. He ________ not come.
must B. can C. may D. should
【解析】句意：——迈克要来明天的时尚演出吗？——我不确定。他可能不来吧。must必须；can能够，能；may可能，也许；should应当，应该。根据答语I'm not sure.“我不确定”可知用may“可能”表示不确定的推测。故选C。
【答案】C
6. (2017·江苏盐城· 4)When a virus comes into our body，we get ill. The same thing ________also happen to a computer.
A. should B. need C. can D. must
【解析】句意：当病毒进入我们的身体，我们就会生病。电脑也会发生同样的事情。should “应当、应该”，强调责任、义务；need “需要”，作情态动词，通常用于否定句或疑问句；can “能，能够，会”，可表示可能；must “必须、应当”，强调主观要求。根据句意，表示“会、可能”，应用can，故选C。
【答案】C
(2017·江苏扬州· 4)—All done! Let's swim，Martine!
—Swimming! I just ________ get used to it in winter.
A. can't B. shouldn't C. mustn't D. needn't
【解析】句意：——好了！玛蒂娜，咱们开始游泳吧。——游泳！我就没有必要在冬天去适应它了。表示“没必要，不必”，用needn't。故选D。
【答案】D
8. (2017·山东青岛· 12)We should keep quiet in the cinema. We ________ speak loudly.
A. can B. must C. needn't D. mustn't
【解析】句意：我们应在电影院保持安静。禁止大声说话。can可以，能；must必须；needn't没必要；mustn't禁止，不允许。故选D。
【答案】D
9. (2017·北京· 25)—________ I hand in the report today?21*cnjy*com
—No，you needn't.
A. Can B. Must C. Shall D. Could
【解析】根据答语“No，you needn't”可以确定用must(必须)提问，故选B。can能够；shall应该；could能够，表示委婉的请求语气。A、C、D均排除。
【答案】B
10. (2017·江苏常州· 5)—Will Dad be back home at 6 o'clock this evening?
—He should，but he ________ not. Sometimes he exercises after work.
can B. must C. need D. may
【解析】句意：——爸爸今晚会在6点钟回家吗？——他应该会，但是也许不会。有时他下班后要做锻炼。答语中“but”表示的转折，提示下文用may表示“或许”。
【答案】D
11. (2017·上海·41)—________ I park my car here for a while?
—No，you mustn't. Do you see the sign “NO PARKING”？
A. Would B. May C. Must D. Should
【解析】句意：——我______在这儿停一会儿车吗？——不，一定不要。你看到“禁止停车”的标识牌了吗？由答语“No，you mustn't. Do you see the sign ‘NO PARKING’？”可推知，上句应是表示请求允许的问句。选项中只有may可以表示有礼貌的请求。故选B。
【答案】B
12. (2017·辽宁营口·18)—We've got everything ready for the trip.
—You mean I ________ bring anything with me，right?
can't B. mustn't C. needn't D. couldn't
【解析】句意：——我们已经准备好了所有的旅游要用的东西。——你的意思是我不需要再带任何东西了，对吧？can't不能；mustn't绝对不能；couldn't用于过去时态的“不能”；needn't没必要。上句已经说准备好了旅游要用的东西，所以答语只能表示没有必要再带东西了。故选C。
【答案】C
13. (2017·江苏无锡·10)Life is like riding a bicycle. To keep your balance，you ________ keep moving.
A. can B. must C. can't D. mustn't
【解析】can能；must必须；can't(不能)；mustn't(不准)。句意：生活就像骑自行车，为了保持平衡，你必须(must)不停地运动。故选B。
【答案】B
14. (2017·湖北咸宁· 35)—It's said that nuclear power will be used to produce electricity in Xianning.
—However，nuclear power ________ be very dangerous.
can B. need C. must D. should
【解析】句意：——据说，在咸宁人们将使用核能源来发电。——然而，核能源可能非常危险。can意为“可能”，表示肯定推测；need意为“需要”；must“一定；必须”；should“应该”。故选A。
【答案】A
15. --Let’s go to Taishan Park by taxi. –It’s not far. We ______ take a taxi.
A. needn’t B. can’t C. mustn’t D. couldn’t
【解析】needn’t 表示“不必要”。
【答案】A
