情态动词单元练习题(含答案)(word)
高中英语情态动词形式练习题40题(带答案)
高中英语情态动词形式练习题40题(带答案)1. In the school library, you ______ keep quiet so as not to disturb others.A. canB. mayC. mustD. might答案：C解析：must表示必须，在图书馆里必须保持安静以免打扰他人。
can表示能够，有能力做某事，这里不是强调能力，所以A选项错误。
may表示可能或许，也可表示许可，但语气不如must强烈，这里需要表达一种规定，所以B选项不合适。
might是may的过去式，同样表示可能性或更委婉的许可，不符合语境，D选项错误。
2. For the school sports meeting, students who are good at running ______ participate.A. canB. shouldC. mustD. would答案：A解析：can表示有能力做某事，这里是说擅长跑步的学生能够参加运动会。
should表示应该，侧重于责任或义务，这里没有这种意思，B选项错误。
must表示必须，参加运动会不是强制的，C选项不符合。
would是will的过去式，通常表示过去的意愿或者用于虚拟语气等，D选项不符合语境。
3. You ______ ask the teacher for help if you don't understand the homework.A. canB. mayC. needD. must答案：A解析：can表示可以，在这里是说如果不理解作业可以向老师寻求帮助。
may也有可以的意思，但can的语气更直接，这里用can更合适。
need作情态动词时主要用于否定句和疑问句，这里是肯定句，C选项错误。
must表示必须，这里不是必须要向老师求助，D选项错误。
4. When we have a school trip, we ______ bring our own lunch.A. canB. mayC. shouldD. could答案：B解析：may表示许可，在这里是说我们在学校旅行时可以带自己的午餐。
有关情态动词的专项练习题及答案
情态动词的专项练习题及答案有关情态动词的专项练习题及答案情态动词，本身有一定的.词义，表示语气的单词。
但是情态动词不能独立作谓语，只能和动词原形一起构成谓语。
接下来由小编给您带来情态动词的专项练习题及答案，希望对您有所帮助！情态动词的专项练习题及答案篇11．( )you tell me what’s happening over there ?A． Could B． May C． Might D． Shall2．( ) I have a word with the manager ,sir ?A． Will B． Would C． May D． Can3．— Something flying far away must be a hawk ．— No, it( ) be a hawk ．A．mustn’t B．mightn’t C．can’t D． might4． Man ( )reach the moon or any other star in the universe now, but we get there years ago ．A． can ；couldn’t B． are able to ；weren’t able toC． must ；needn’t D． can ； had to5． Grandfather ，( ) my sister come ?A． Will B． shall C． would D． could6．“ What I do for you ? ” means “( ) I help you ? ”A． can ， May B． shall ； Need C． can ； Can D． will ；Shall7．—Could I borrow your dictionary?—Yes， of course you ( )．A． Might B． will C． can D． should8．The fire spread through the hotel very quickly but everyone ( )get out．A． had to B． would C． could D． was able to9． The monitor must be in the reading－room， ( )?A．mustn’t B．doesn’t C．needn’t D．isn’t10．He hardly ( )say anything more，since you know all about it．A．don’t B．needn’t C． needs D． need11．You ( )to the meeting this afternoon if you have something important to do．A．needn’t to come B．don’t need comeC．don’t need coming D．needn’t come12．—May I pick a flower in the garden ? — ( )．A． No，you needn’t B． Not， pleaseC． No，you mustn’t D． No，you won’t13．—Helen， will you be at the party tonight ?—Yes， but I have so much homework to do that I really ( )．A．won’t B．can’t C．mustn’t D．shouldn’t14． If you listen to me， you ( ) have some candies,Deary ．A． shall B． May C． will D． must15． Peter ____ come with us tonight，but he isn’t very sure yet．A． May B． Can C． will D． must16．—Dare you go home at night ?—_________．A． Yes， I do B． No，I daren’tC． No，I don’t D． Yes， I dare so．17． When you go abroad， do you _____ take your passport ?A． have to B． ought to C． be able to D． need18．—You must phone us every week．—Yes， I _____．A． must B． have to C． will D． should19．—Your language teacher looks a rather kind woman．—But in fact she is cold and hard on us． You _____ believeA． should B．wouldn’t C．mustn’t D． might not．20． A wise man __ sometimes make a mistake．A． can B． may C． might D． must21．—Shall I tell John about it ?—No， you ( )．I’ve told him already．A．needn’t B．wouldn’t C．mustn’t D．shouldn’t22． Tom ought not to ( )me your secret，but he meant no harm．A． have told B． tell C． be telling D． having told23．—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． need24．Sorry I’m late． I ( )have turned off the alarm clock and gone back to sleep again．A． Might B． should C． Can D． will25．—Are you coming to Jeff’s party ?—I’m not sure． I ( )go to the concert instead．A． must B． should C． Would D． might参考答案：ACCAB CBCCD DDDCB AABAC AAAAB情态动词的专项练习题及答案篇21. Peter ________come with us tonight, but he isn’t very sure yet.A. mustB. canC. mayD. will2. — Could you borrow your dictionary?— Yes, of course you ________.A. mightB. willC. canD. should3. A computer ________think for itself, it must be told what toA. can’tB. couldn’tC. may notD. might not4. I didn’t hear the phone, I ________asleep.A. must beB. must have beenC. should beD. should have been5. There was plenty of time, she ________.A. mustn’t have hurriedB. couldn’t have hurriedC. must not hurryD. needn’t have hurried6. The plant is dead. I ________it more water.A. will giveB. would have givenC. must giveD. should have given7. Very loud noises ________make people ill, hurt their ears, or even drive them mad.A. mustB. needC. canD. should8. He asked me for the dictionary many times; please tell him that he ________have it tomorrow.A. mustB. needC. mayD. dare9. — Why is she still standing there?— She ________be waiting for her boyfriend.A. canB. mustC. dareD. need10. Two eyes________ see more than one.A. canB. mustC. mightD. shall11. What ________he mean? ________you tell me?A. can; MayB. can; CanC. may; MayD. must; Should12. How ________he say that his teacher was unfair?A. mustB. mightC. couldD. need13. It ________be very cold in this part.A. canB. oughtC. shallD. dare14. I’d like to ask a question if I ________.A. mustB. willC. mayD. might15. Even in summer the temperature ________suddenly drop below freezing.A. mightB. oughtC. mustD. need16. He decided to join the army so that he ________defend the country.A. may helpB. might helpC. helpsD. helped17. You ________always be talking like that.A. mightn’tB. mayn’tC. can’tD. mustn’t18. The car ________have broke doown just when we were about to start off.A. mustB. couldC. mightD. should19. You ________see him while he is in hospital.A. have betterB. had betterC. would ratherD. had to20. There is a fine sunset; it ________to be a fine day tomorrow.A. oughtB. shouldC. has toD. has better21. You are his father, you ________take care of him.A. mightB. oughtC. ought toD. are able to22. That’s all. It ________be talked about any more.A. needn’tB. mightn’tC. darn’t toD. needn’t to23. The question ________discussing.A. needsB. needC. can beD. must be24. He ________even look out of the window.A. daren’tB. daresn’tC. dared not toD. dares not25. I’m so hungry that I ________find something to eat.A. have toB. wouldC. mayD. can26. All the students ________do their best for the modernization of our country.A. canB. shouldC. mayD. might27. You ________be careful with your homework.A. mustB. have toC. mayD. are used to28. It is getting darker. You ________not go home.A. had betterB. have betterC. would ratherD. would like29. I ________what happened to our school.A. would like knowB. would like to knowC. would like knowingD. would like that I know30. — Would you mind my changing the plan?— ________.A. Oh, no, pleaseB. Yes, I mind notC. No, I wouldD. Yes, I will31. — It ________ be Jack who is in the library.—I’m sure it ________be him, I saw him off at the railway station just two days ago.A. can’t; can’t eB. must; mustn’tC. must; can’tD. can’t; mustn’t32. I ________tell her the truth about his marriage.A. can’t helpB. can’t butC. may not helpD. mustn’t but33. Since she is angry, we ________.A. had better to leave her alongB. should leave her aloneC. would rather to leave her aloneD. must leave her alone34. Look! What you’ve done to me. You ________more careful.A. maybeB. had toC. should have beenD. would be35. ________read the letter for you?A. Would you like meB. Do you want meC. Will you mind meD. Shall I36. He promised he ________not make such silly mistakes.A. wouldB. shouldC. mightD. could37. ________it be true that his father will go abroad?A. CanB. MayC. NeedD. Should38. Those streams are so small that they ________be shown in the maps.A. mustn’tB. may notC. can’tD. may39. — May I use your bike?— ________.A. No, you may notB. No, you mustn’tC. No, you won’tD. Sorry, I’m afraid not40. — Must I write to her?— No, you ________.A. mustn’tB. shouldn’tC. can’tD. don’t have to41. — Need I start tonight?— Yes, you ________.A. doB. needC. mustD. may42. The old man ________sit for hours watching the ships.A. wouldB. shouldC. was used toD. would rather to43. If the telephone ________ring, please wake me up.A. wouldB. shouldC. willD. might44. I wish they ________stop making remarks about me.A. wouldB. willC. shouldD. shall45. You’re thirsty, aren’t you? ________he get some coffee?A. DoesB. ShallC. WouldD. Let46. Which of the following is wrong?A. That may be true.B. That might be true.C. That can be true.D. That could be true.47. — Would you lend me some money?— Yes, I ________.A. wouldB. willC. canD. may48. He ________ swimming when he was young.A. was used to goB. got used to goC. used to goingD. used to go49. You say you ________ not do it, but I say you ________do it.A. will; shallB. shall; shallC. shall; willD. will; will50. You ________out yesterday without a coat. No wonder youcaught cold.A. should have goneB. shouldn’t have goneC. could not have goneD. might have gone51. He ________the 8:30 train because he didn’t leave home until 9:00.A. can’t catchB. couldn’t catchC. may notD. can’t have caught52. You ________us this because we had more than enough.A. needn’t bringB. needn’t have broughtC. mustn’t bringD. co uldn’t have brought53. — He learnt the language in three months.— He ________very hard.A. must workB. might have workedC. must have workedD. might work54. — Who told you my telephone number?—I don’t remember. It ________Mary.—It can’t be Mary, she doesn’t know it.A. may have beenB. can have beenC. must beD. can be55. You ________him, why didn’t you?A. ought to thankB. ought have thankedC. ought to have thankedD. ought thank56. I ________have arrived a little earlier, but my car broke down.A. shouldB. couldC. canD. can’t57. — ________we go out for a walk?—Great. Let’s goA. ShallB. WillC. MayD. Should58. Though she was seriously ill, she ________ complete the work in time.A. wouldB. was able toC. was possible toD. might59. — Would you like to play chess with me?— Yes, ________.A. I’dB. I wouldC. I’d likeD. I’d like to60. Tom is late. He ________the wrong bus.A. must takeB. must have takenC. might takeD. could take1—10. CCABD DCCBA 11—20. BCACA BDDBA 21—30. CAAAA BAABA 31—40. CBBCD AACDD 41—50. CABAB CBDAB 51—60. DBCAC BABDB。
五年级英语情态动词练习题30题(答案解析)
五年级英语情态动词练习题30题(答案解析)1.She _____ play basketball after school.A.canB.mustC.shouldD.would答案解析：A。
“can”表示有能力做某事，她放学后能打篮球，符合语境。
“must”表示必须，语气太强硬；“should”表示应该，不符合这里表达有能力做某事的意思；“would”表示过去的意愿或委婉语气，也不恰当。
2.We _____ listen to the teacher carefully in class.A.canB.mustC.shouldD.will答案解析：B。
在课堂上我们必须认真听老师讲课，“must”表示必须。
“can”有能力做某事；“should”应该，语气不如“must”强硬；“will”表示将来的意愿，都不符合语境。
3.He _____ swim very well.A.canB.mayC.must答案解析：A。
“can”表示有能力做某事，他能游泳游得很好。
“may”表示可能；“must”必须，这里不是强调必须游泳；“should”应该，都不合适。
4.They _____ finish their homework on time.A.canB.mustC.shouldD.need答案解析：B。
他们必须按时完成作业，“must”表示必须。
“can”有能力做某事；“should”应该，语气不如“must”强硬；“need”需要，通常用need to do 的形式。
5.I _____ read many books.A.canB.mustC.shouldD.will答案解析：A。
我能读很多书，表示有能力做某事，用“can”。
“must”必须，太强硬；“should”应该，不符合这里表达能力的意思；“will”表示将来的意愿。
6.She _____ go to the park on Sunday.A.canC.shouldD.may答案解析：D。
情态动词练习(含答案)
情态动词练习(含答案)一、单项选择情态动词1．I use a clock to wake me up because at six o'clock each morning the train comes by my house.A．couldn't B．mustn'tC．shouldn't D．needn't【答案】D【解析】试题分析：考查情态动词辨析。
A不可能；B禁止，千万不能；C不应该；D不需要；句意：我不需要使用闹钟叫醒我，因为每天早上六点都有一列火车经过我的家旁边。
根据句意可知我不需要使用闹钟。
故D正确。
考点：考查情态动词词义辨析2．Most of the top leaders expressed a common desire at the UN conference, ______ that different cultures ______ coexist with tolerance.A．the one ; must B．the one ; should C．one ; must D．one ; should【答案】D【解析】【详解】考查替代和情态动词。
句意：大多数高层领导人在联合国大会上表达了一个共同的愿望，即不同的文化应该与宽容共存。
大多数高层领导人在联合国大会上表达了一个共同的愿望，即不同的文化应该与宽容共存。
替代表泛指的单数名词，通常用one替代。
此处用one替代前面的a desire，是同位语；结合句意第二空用情态动词should“应该”。
故选D。
【点睛】that ,it ,one 代指前面的名词时的用法1.one 指代前面出现的可数名词，是泛指。
可以和冠词连用，也可以有自己的定语。
一般不能用做特指，但和定冠词连用时可以是特指。
如： Please show me the cup, the red one on the shelf.2.It 指代前面提到的单数名词，相当于the one。
高中英语情态动词形式练习题40题(答案解析)
高中英语情态动词形式练习题40题(答案解析)1.She ____ know the answer.She always gets good grades.A.mustB.can'tC.mayD.might答案解析：A。
“She always gets good grades.”表明她总是取得好成绩，所以“一定”知道答案，must 符合语境。
can't 表示不可能；may 和might 表示可能，语气较弱，不符合此处语境。
2.____ I borrow your pen?A.MustB.CouldC.WouldD.Shall答案解析：B。
“borrow your pen”是请求，could 用于委婉地请求许可，符合语境。
must 表示必须；would 表示意愿或过去习惯；shall 用于第一人称征求对方意见，均不符合此处借笔的请求语境。
3.You ____ be careful when crossing the road.A.mustB.canC.mayD.could答案解析：A。
过马路时“一定”要小心，must 表示必须，符合语境。
can 表示能够；may 表示可能；could 表示能够（ 语气更委婉），均不如must 强烈。
4.He ____ come to the party if he finishes his homework.A.mayB.mustC.can'tD.would答案解析：A。
“if he finishes his homework”表示一种可能性，may 表示可能，符合语境。
must 表示必须；can't 表示不可能；would 表示意愿或过去习惯，均不符合。
5.They ____ have gone on vacation.They haven't been at school for days.A.mustB.mayC.can'tD.could答案解析：A。
(完整版)情态动词练习题答案.doc
精选练习情态动词1． You________read that article if you don．’ t want toA ．haven’ t B．can’ t C. mustn ’ t D ．needn’t2． I_______get this done immediately or it will be too late．A. must B．can C．may D．might3． The house is dark；the Browns_________ to bed．A ．may go B．should goC． should have gone D. must have gone 4．“ That car must have cost a 1ot of money.”“ Oh， no，_____. ”A ． it mustn’ t B．it hasn’tC．it doesn’ t D ．it didn’t5.I _______asleep in the corner，for 1 remember nothing of whathappened during the night．A ． might fall B. must fallC．must have fallen D. can have fallen 6． I ’ m feeling sick．I_________so much chocolate．A ． needn’ t have eaten B. couldn’ t have eatenC．mustn’ t have eaten D．shouldn ’ t have eaten7. My wallet is nowhere to be found．I________when 1 was on the bus．A ． must have dropped itB ． must drop itC. should have dropped it D ．ought to have dropped it8．Mr ．Green________my letter，otherwise he would have replied before now．A ．must have received B． must have failed to receiveC．must receive D. must fail to receive9.You could have done much better yesterday．Why_________?A ． didn ’ t youB ．couldn ’ t youC. hadn’ t you D ．shouldn ’ t you10．They have done things they ought_______C．not to have done D ．not having done11. You had better__________a doctor as soon as possible．A ． seen B．saw C．see D．seeing12．I believe he__________an accident．otherwise he would have arrived on time．A ． would have had B. could have hadC．should have had D．must have had13．Something must have happened on their way here．Or they_______by now．A ． should have arrived B．should arriveC．would have arrived D． would arrive14.“ Are you coming‘ to Jeff’ s party?”“ I ’ m not sure. I _________ go to the concert instead.”A ． must B. would C． should D． might15．“ 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 ’t16．“ I heard they went skiing in the mountains last winter．”“ It __________true because there was little snow there.”A ． may not be B．won’ t be C．couldn ’ t be D． mustn’ t be17．“ Shall we go skating or stay at home?”“ Which __________do yourself? ”A ． do you rather B. would you ratherC．will you rather D．should you rather18．I was really anxious about you． You_______home without a word．A ． mustn’ t leaveB ．shouldn ’ t haveleftC couldn ’ t have leftD ．needn’ t leave19．Someone is coming here．Who___________it be?A ． will B. shall C．must D．can20．—— May I stop here?—— No，you_________．A ． mustn’ t B. might not C．needn’ t D．won’t1— 5．DADDC6—10．DABAC11—15．CDADB16—20．CBBDA 解析1．本句意：如果你不想，你⋯⋯那篇文章。
三年级英语情态动词基础练习题30题(答案解析)
三年级英语情态动词基础练习题30题(答案解析)1.I_____swim.A.canB.can'tC.doD.don't答案解析：A。
本题考查情态动词can 的用法。
can 表示“能、会”，句子意思是“我会游泳”。
B 选项can't 表示“不会”，与题目意思不符。
C 选项do 和D 选项don't 是助动词，不能表示“会游泳”的意思。
2.She_____dance.A.canB.can'tC.isD.isn't答案解析：A。
“她会跳舞”用can 表示“会、能”。
B 选项can't 不符合题意。
C 选项is 和 D 选项isn't 是be 动词，不能表示“会跳舞”。
3.He_____read books.A.canB.can'tC.doD.does答案解析：A。
“他会读书”用can。
B 选项can't 与题意不符。
C 选项do 和D 选项does 是助动词，不能表示“会读书”。
4.We_____play football.A.canB.can'tC.doD.don't答案解析：A。
“我们会踢足球”用can。
B 选项can't 不符合题意。
C 选项do 和 D 选项don't 是助动词，不能表示“会踢足球”。
5.They_____sing songs.A.canB.can'tC.areD.aren't答案解析：A。
“他们会唱歌”用can。
B 选项can't 不符合题意。
C 选项are 和D 选项aren't 是be 动词，不能表示“会唱歌”。
6.The bird_____fly.A.canB.can'tC.isD.isn't答案解析：A。
“鸟会飞”用can。
B 选项can't 不符合题意。
C 选项is 和D 选项isn't 是be 动词，不能表示“会飞”。
高中英语情态动词专项练习200题(含答案)
高中情态动词专项练习200题Ⅰ．情态动词的特征：①本身有词义；②不能独立作谓语；③后接动词原形一起构成谓语；④不随人称和数的变化。
Ⅱ．情态动词各自的基本意义及用法：1．can 与could用法2．may与might用法3．must与have to用法4．need与dare用法5．should与ought to用法6．shall与will用法7．used to与would用法Ⅲ．情态动词表推测：1．大多数情态动词（除表‘能力、许可、意志’外），都可以表示推测，其程度有差异。
按可能性程度的高低排列为：must﹥will ﹥would ﹥ought to ﹥should完全肯定完全可能很可能﹥can ﹥could﹥may ﹥might可能有可能2．区分情态动词的否定含义：may not或许不、可能不might not可能不can’t 不可能mustn’t不许、禁止shouldn’t不应该needn’t 不必3．情态动词表推测具体运用：情态动词可以对现在、进行、过去推测。
4．表示反劝的特殊的表推测形式5．注意：Ⅳ．情态动词表推测的反意疑问句1．情态动词表推测的反意疑问句，简单来说，就是以情态动词后的时态为淮，如句子里有明确的时间状语，则以其为准。
2．以must 为例：e.g.: 1．You must be hungry now, aren’t you?2．He must be watching TV , isn’t he ?3．Tom must have lived her for a long time, hasn’t he ?4．She must have arrived yesterday, didn’t she?注：如选择题中（以She must have arrived yesterday, didn’t she？为例）既有didn’t she又有hasn’t she 则以didn’t she？为最佳答案。
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情态动词单元练习题(含答案)（word）一、初中英语情态动词1．—He be in the classroom,I think.—No, he be in the classroom. I saw him go home a minute ago.A. can； may notB. must； may notC. may； mustn'tD. may； can't【答案】 D【解析】【分析】句意:——我认为他可能在教室里。
——不，他肯定没有在教室里，我刚才看到他回家了。
must,can（could）,may（might）可以表示猜测，must表示肯定猜测，用于肯定句，肯定……一定……；can't表示否定猜测，肯定不……，另外can（could）,may （might）,表示可能性猜测，可能……根据I think,可知把握较小，根据I saw him go home a minute ago.可知第二句把握大，故选D。
2．As middle school students, we follow the public rules wherever we go.A. wouldB. shouldC. mightD. could【答案】 B【解析】【分析】句意：作为中学生，无论走到哪里我们应该遵守公共规章制度。
would 将会，指将会发生的事情；should，应该，主要用于告诉某人应该做什么、给予忠告或加强语气。
might，可能，事情发生的可能性；could，能，表示委婉语气；此处表示应该做的事情，故选B。
【点评】此题考查情态动词辨析。
根据上下文的联系确定所使用的情态动词。
3．——Shall we meet at the station at 7 am?——In fact, we _______. The train _______ until 9 a. m.A. mustn't; doesn't leaveB. mustn't; leavesC. needn't; won't leaveD. needn't; will leave【答案】 C【解析】【分析】need，需要，否定式是needn't；must的含义是必须一定，其否定形式mustn't表示禁止的含义。
句意：我们上午七点在车站见面好吗？——实际上，我们不必。
火车到上午九点钟才出发。
结合语境可知后一空描述的是将要发生的动作，故用一般将来时态。
选C。
【点评】情态动词的考查是初中英语考查的重点，平时学习中一定要熟记这些词的基本词义及用法上的不同，注意其用法及在句子中表达语气的不同。
考试中结合语境选择合适答案。
4．You _____ walk too close to the edge of the path because you might fall and hurt yourself.A. mayB. mightC. needn'tD. musn't【答案】 D【解析】【分析】句意：你不能走得太靠近路的边缘，因为你可能跌倒伤害自己。
A. may 可以，表允许；B. might可能，表推测；C. needn't不必，指没有必要；D. musn't不能，表示不允许或禁止。
根据句意语境，本句是不允许离路边太近，故选D。
【点评】考查情态动词辨析题。
注意分析句意和词义。
5．According to the law, traffic keep to the left in England.A. mayB. mustC. needD. can【答案】 B【解析】【分析】句意：根据法律规定，在英国车辆必须靠左形式。
A.may可以，表示允许；B.must必须，表示要求；C.need需要，表示必要性；D.can能，表示能力。
根据According to the law,可知法律的要求，应是必须的，应用must，故答案为B。
【点评】考查情态动词。
掌握情态动词的常用法。
6．Please don't make so much noise. I ________ hear the speaker very well.A. needn'tB. can'tC. shouldn'tD. mustn't【答案】 B【解析】【分析】句意：请不要发出那么多噪音。
我不能很好地听清楚发言者的话。
needn't不必；can't不能；shouldn't不应该；mustn't禁止。
根据前半句的Please don't make so much noise.可知别人发出了太多噪音，所以他无法听见演讲者的话，故用情态动词can't。
故选B。
【点评】考查情态动词，结合句意和词义做出判断。
7．A hard-working man ______ become a great scientist, but a great scientist _______ be a hard-working man.A. can't; canB. may not; mustC. can't; mustD. may not; can【答案】 B【解析】【分析】句意：一个勤奋的人可能不会成为一位伟大的科学家，但是一位伟大的科学家一定是一个勤奋的人。
can't不可能，不会；can可能，能，会；may not 可能不；must 必须，一定；结合句意，可知，第一个空为“可能不”，第二个空为“一定”，故答案为B。
【点评】考查情态动词。
掌握情态动词表推测时的意义和用法。
8．Teenagers allowed to drive .A. should not beB. should be notC. not should be【答案】A【解析】【分析】句意：年轻人不应该被允许驾车。
Should是情态动词，其否定表达一般在在后面加副词not，故选A。
【点评】此题考查含有情态动词的被动语态的否定形式。
平时注意记忆情态动词的记忆和用法。
9．—Who it be that is knocking at the door?—It be father, but I'm not sure.A. call; mustB. can; mayC. must; canD. may; must【答案】 B【解析】【分析】句意：——敲门的人可能是谁呢？——他可能是父亲，但是我不确定。
第一空，can可能，表猜测用语疑问句形式，may是表可能；第二空，根据后面的but I'm not sure，可知表示不确定的猜测，应填may，故选B。
【点评】此题考查情态动词辨析。
先弄清每个情态动词的使用规则。
根据上下文的联系确定情态动词的使用。
10．—I wonder if this smart phone is Mary's.—It _______ belong to her. _______ is totally different from this one.A. mustn't; HerB. can't; HerC. can't; HersD. may; Hers 【答案】C【解析】【分析】句意：――我想知道这个智能机是否是玛丽的。
――不可能属于她，她的和这个完全不同。
情态动词表示推测时，用must表示“一定”，用might, could表示“可能”，用can't表示“不可能”。
从句意看，这手机与她的完全不同，故不可能是她的，前面用can't。
形容词性的物主代词后一定有一个被修饰的名词，名词性的物主代词后没有被其修饰的词，本题后没有被修饰的词，用名词性的物主代词，“她的”：hers。
故选C。
11．I can't go with you. I _______ stay at home until my parents come back.A. canB. mayC. mustD. could【答案】 C【解析】【分析】句意：我不能和你一起去。
我必须呆在家直到我父母回来。
A. can能，表示能力；B. may可以，表示许可；C. must必须，强调主观愿望；D. could可以，表示允许、请求。
父母没回来前，我必须待在家。
故选C。
【点评】此题考查情态动词的用法。
12．—That must be Mr. John.—No, it be him. I saw him off at the airport half an hour ago.A. may notB. mustn'tC. can'tD. needn't【答案】 C【解析】【分析】句意：——那一定是约翰先生。
——不，不可能是他。
我看见他在半小时前到达机场。
nay not可能不是；mustn't一定不是；can't不可能是；needn't不必，英语中，肯定的推测用must；否定的推测用can't。
依据 I saw him off at the airport half an hour ago. 可知不可能是他，所以应该是否定的推测，故选C。
【点评】此题考查情态动词。
弄清每个情态动词的使用规则。
根据语境和上下文的联系确定所使用的情态动词。
13．The girl riding a horse there be Shirley. Her left leg was badly hurt in an accident yesterday.A. needn'tB. may notC. can'tD. mustn't【答案】C【解析】【分析】句意：那边骑马的女孩不可能是雪莉。
她的左腿在昨天的事故中受了重伤。
A.needn't不必；B. may not不可以；C. can't不可能，表示否定的推测；D. mustn't 不准，不允许，表示禁止。
本题表示否定的推测，不可能：can't。
故选C。
14．—___________ I bring you all the magazines right now?— No, you don't have to, but you give them to me tomorrow.A. May, canB. Should, mustC. Can, canD. Must, had better【答案】 D【解析】【分析】句意为：—我必须给你马上把所有的杂志都拿来吗？—不，不必。