情态动词专练
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情态动词专项练习一、情态动词单项选择题1.People ________ talk on a mobile phone while they are driving.A.shouldn’t B.needn’t C.must D.can【答案】A【解析】【详解】句意:人们不应该在开车的时候打电话。
考查情态动词辨析。
should’t不应该;needn’t不必;must必须;can能够。
根据“talk on a mobile phone while they are driving”及常识,可知,开车时不应该打电话,故选A。
2.—Miss Chen, how can I get better grades in exams?—Besides by learning wisely and studying hard, you ________ be careful to check papers again. A.can’t B.might C.must【答案】C【解析】【详解】句意:——陈老师,我怎样才能在考试中取得更好的成绩呢?——除了明智地学习和努力学习之外,你必须仔细检查卷子。
考查情态动词。
can’t不能;might可能;must必须,一定。
根据“Miss Chen, how can I get better grades in exams?”及常识可知想要取得考成绩就一定要仔细检查试卷,用must符合语境。
故选C。
3.—Will you go to Daniel’s house for his birthday party tomorrow?—I ________ go there, but I’m not sure. I have to ask my mum.A.can B.may C.should D.must【答案】B【解析】【详解】句意:——明天你会去丹尼尔家参加他的生日聚会吗?——我可能去那儿,但我不确定。
初中英语情态动词专项练习一、情态动词单项选择题1.—Must you finish your homework first after school?—No, I ________. But I should help my mum with the housework.A.mustn’t B.can’t C.needn’t D.may not【答案】C【解析】【详解】句意:——放学后你必须先完成作业吗?——不,我不需要。
但是我应该帮助妈妈做家务。
考查情态动词词义辨析。
mustn’t禁止,不许;can’t不能;needn’t不必;may not不可以。
由句中“No”可知,此句应作否定回答。
对于must的否定回答要用needn’t,表示不必,故选C。
2.— Do we have to leave for the station at once?— No, we _________. There is plenty of time before the train starts.A.mustn’t B.needn’t C.can’t D.shouldn’t【答案】B【解析】【详解】句意:——我们必须马上动身去车站吗?——不,我们不需要。
火车开动前还有很多时间。
考查情态动词的用法。
mustn’t一定不要,禁止;needn’t不需要;can’t不能;shouldn’t不应该。
根据后文“There is plenty of time before the train starts”以及答语“No”可知,没必要马上动身去车站。
故选B。
3.Generally speaking, there ________ be any survivors(幸存者) after such a long time. However, two young people were found ________. Life is super-nature!A.mustn’t; living B.can’t; living C.may; dead D.can’t; alive【答案】D【解析】【详解】句意:一般来说,过了这么长的时间,是不可能有任何幸存者了。
情态动词专项练习一、情态动词单项选择题1.— 3,000 yuan for such a blouse! You ________ be joking.— It is made of silk, so it costs.A.can B.may C.must D.need【答案】C【解析】【详解】句意:——这样一件衬衫三千元!你一定是在开玩笑。
——这是丝绸做的,所以很贵。
考查情态动词。
can能;may可能;must必须,一定;need需要。
根据空格前的句子“3,000 yuan for such a blouse! ”可知,说话者持有一种怀疑的态度,故空格处表达的是“一定是在开玩笑”,must be“一定是”,故选C。
2.You ________ swim here! Look at the sign. It says “No swimming”.A.mustn’t B.couldn’t C.needn’t D.won’t【答案】A【解析】【详解】句意:你不能在这里游泳!看这个标志。
上面写着“禁止游泳”。
考查情态动词。
mustn’t禁止;couldn’t不可以;need n’t不必;won’t不会。
根据“It says‘No swimming’.”可知是禁止游泳。
故选A。
3.Although many have learned it for years, only a few can ________ English well.A.speak B.speaking C.look D.looking【答案】A【解析】【详解】句意:虽然许多人已经学了多年英语,但只有少数人能说好英语。
考查动词辨析。
speak说;look看。
can是情态动词,后跟动词原形;且表示说某一门语言,用speak。
故选A。
4.—Shall I tell Mike about it?—No, you ________. He’s already been told.A.mustn’t B.can’t C.don’t D.needn’t【答案】D【解析】【详解】句意:——要我告诉迈克吗?——不,你不必。
情态动词专项练习情有具体的,但也同助一,需要与其他一起构成句子的,另外情没有人称和数的化,情后必跟原形。
考点一: can,may ,must 等情在述句中的用法:1.can 的用法:(1).表示能力、可、可能性。
表示能力一般“能、会”,即有种能力,尤其是生来具的能力,此 may 和 must 均不可代替它。
如:She can swim fast, but I can 她能’游t.得很快,但我不能。
I can see with my eyes我.用眼睛看。
(2).表示可,常在口中。
如:You can use my dictionary. 你可以用我的字典。
(3).表示推,意“可能”,常用于否定句和疑句中,此can’t “不可能”。
如:Can the news be true?个消息会是真的?—Can it be our teacher?那个人有可能是我老?—No, it can ’t be our teacher. He is on a visit to the Great Wall不可.能。
咱老正在游城呢。
【例】— I think Miss Gao must be in the library. She said she would go there. —No. She __be there, I have just been there.【解析】根据下文“我去那儿”可知,“不可能”,can’t表示推 [ 答案 ]2. could 的用法:(1).can 的去式,意“能、会”,表示去的能力。
如: He could write poems when he was10.他十就会写。
(2). could 在疑句中,表示委婉的气,此 could 没有去式的意思。
如:Could you do me 你能帮我个忙?— Could I use your pen?我能用一下你的笔 ?—Yes, you can可.以。
1. I promised to get there before 5 o’clock, but now the rain is pouring down. They ______ for me impatiently.A. may waitB. ought to waitC. could waitD. must be waiting2. He was very brave. Even though she’d hurt her leg, she ________ go back alone.A. couldB. mightC. have toD. was able to3. You ________ pay too much attention to your reading skill, as it is so important.A. cannotB. shouldC. mustD. needn’t4. I’ve tried several times, but the car just _______.A. doesn’t startB. wouldn’t startC. won’t startD. didn’t start5. Always the old lady ______ sit for hours doing nothing at all.A. was used toB. wouldC. used toD. should6. There used to be a small school,___________?A. was thereB. wasn’t itC. usedn’t thereD. usedn’t it7. Our house is on the top of the hill, so in summer the wind _____ be pretty cold.A. mustB. canC. ought toD. need8. Haven’t I told you that you __________ have the answer tomorrow morning?A. willB. shallC. shouldD. would9. I’m surprised that he _______ in the match.A. should failB. should have failedC. would have failedD. may have failed10. Better go to see my sick colleague right now, ________I?A. hadn’tB. didn’tC. don’tD. won’t11. Sir, you ______ be hunting deer here, for they are preserved by the government.A. oughtn’t toB. can’tC. won’tD. needn’t12. Sorry I’m late. I ______ have turned off the alarm clock and gone back to sleep again.A. mightB. shouldC. canD. will13. — There were already five people in the car, but they managed to take me as well.— It __________ a comfortable journey.A. can’tB. shouldn’t beC. must have beenD. couldn’t have been14. To be on the safe side, we should fill up the tank now, because we ______ run out of gas on the way.A. canB. wouldC. mightD. should15. ____ three people who travel together, there _____ be at least one who ____ be my teacher.A. Between; can; willB. In; should; couldC. Among; will; mayD. Of; must; can16. —Could you lend me that book you ______ me about when I telephoned you?—No, I am sorry, I can’t. I gave it to a friend.A. were tellingB. would tellC. had toldD. had been telling17. —We need a person badly to think up such an idea.—_______ the new comer have a try?A. ShallB. MayC. ShouldD. Need18. We ________ so tired. We’ve only been to a party.A. mustn’t have feltB. wouldn’t have feltC. shouldn’t have feltD. couldn’t have felt19. Professor Smith, many students want to see you. __________ they wait here or outside?A. DoB. ShallC. WillD. Would20. —How about paying a visit to Mr. Richardson, our former history teacher?—Good idea. I will e-mail him today so he _____know _________ to expect us.A. shall; whyB. may; whenC. would; whyD. will; how21. —I went to work on foot yesterday, though it _________ cats and dogs.—You __________ by bus. It was likely to get a cold.A. is raining; must have goneB. rained; would goC. was mining; should have goneD. have rained; could have gone22. You ______ pay too much attention to your reading skill, as it is so important.A. cannotB. shouldC. mustD. needn’t23. I told Sally to fix him up with this job, but perhaps I _________ it out for her.A. had to writeB. must have writtenC. should have writtenD. ought to write24. My sister met him at the Grand Theatre yesterday afternoon, so he ________ your lecture.A. couldn’t have attendedB. needn’t have attendedC. mustn’t have attendedD. shouldn’t have attended25. Research findings show we spend about two hours dreaming every night, no matter what we ________ during the day.A. should have doneB. would have doneC. may have doneD. must have done26. —Is there any flight to Tokyo today?— I think there _____, for the weather is too bad.A. mustn’t beB. mightn’t beC. needn’t beD. can’t be27. —I’m told that John had another car accident this morning.— I believe not. He _____ so careless.A. shouldn’t have beenB. wouldn’t have beenC. couldn’t have beenD. mustn’t have been28. It was playing computer games that cost the boy a lot of time that he __________ doing his lessons.A. might have spentB. ought to have spentC. must have spentD. could have spent29. —I didn’t know you were good friends.—You _______. I have known her since she moved here. You were studying abroad then.A. may haveB. needn’t haveC. couldn’t haveD. must have30. They must have finished the work by the end of last month, __________?A. mustn’t theyB. haven’t theyC. hadn’t theyD. didn’t they31. —I didn’t see her yesterday.— Of course, you _____, because he had gone for a trip.A. can’tB. may not haveC. can’t haveD. mustn’t have32. You ________ phone him if you want to, but you _________. He is sure to phone you.A. may; mustn’tB. have to; needn’tC. can; doesn’t needD. can; needn’t33. — She must have gone back to the valley.— ______, she _____ have. The entrance to it was nowhere to be found.A. No; mustn’tB. Yes; mightC. Yes; couldD. No; couldn’t34. He _____ full marks, but he was so careless as to make a spelling mistake.A. must have gainedB. can have gainedC. could have gainedD. must gain35. From what you said, she _____ you about it.A. mustn’t have toldB. can’t have toldC. mustn’t tellD. can’t tell36. — You ought to have made an apology to Tom yesterday evening.— Yes, I know I _________.A. ought toB. have toC. should haveD. must have37. —Is there a fog in the evening?—There _______ be. I’ll make a phone call to find it out.A. mustB. wouldC. willD. might38. — _______ he help you with the problem?—Well, though it is very hard, __________ I’ll do what I can to work it out.A. Shall; butB. Can; andC. Must; howeverD. Will; still39. —How is that, Joan?—Yeah, it’s from the boss. She _________ first, whether she likes it.A. shall goB. ought to have goneC. should goD. must have gone40. —Would you like to watch the video, in which you can see foreigners making jiaoji during the Spring Festival?—Sure, it ______ be very interesting.A. shouldB. mayC. canD. will41. —The door was open.—It _________ open. I had locked it myself and the key was in my pocket.A. can not beB. must not beC. can not have beenD. must not have been42. —Where ________ Margaret have put the empty bottles?—She ________ them away. They must be somewhere.A. can; can’t have thrownB. must; needn’tC. must; must have thrownD. cant; must throw43. —Mum, I climbed to get the Teddy Bear from the top of the shelf.—My goodness! You _______ yourself. You ______ do that next time.A. must have hurt; mustn’tB. should have hurt; can’tC. may have hurt; mustn’tD. might have hurt; won’t be able to44. —Shall I go and buy more food and drinks for the party?—No, we have prepared a fridge of those. That _______ be quite enough.A. canB. mayC. mightD. ought to45. —Hurry up, Michael! It’s ten to three.—Goodness me! The class_______. I’ll be late again.A. must beginB. may beginC. should have begunD. must have begun46. When he was there, he ____ go to that coffee shop at the street comer after work every day.A. wouldB. shouldC. had betterD. might47. —I hear you have written a novel.—Yes, the book ________ be out in a month or so.A. canB. dareC. shouldD. need48. —How could I thank you enough?—Don’t mention it. Any other man _________ that.A. must doB. could doC. would have doneD. should have done49. —Why aren’t they here yet?—They ________ the bus.A. can have missedB. must be late forC. may have missedD. might be late for50. Mike _______ come to see me I don’t want to go out in case he comes.A. canB. mustC. mayD. will51. The thief ________ in from the kitchen window as the door was closed.A. may climbB. must have climbedC. could have climbedD. should have climbed52. —You didn’t invite Bill?— __________ him too?A. Must I inviteB. Must I have invitedC. Should I inviteD. Should I have invited53. —Why didn’t you attend the lecture yesterday?—I didn’t think that we _______ on Sundays.A. shouldB. ought to haveC. shouldn’t haveD. will have to54. It’s said that there are plenty of hotels in that town. There ______ be any difficulty for you to find somewhere to stay.A. wouldn’tB. mustn’tC. shouldn’tD. needn’t55. —Would you be here to attend the English party this evening?—Yes, we _________.A. shallB. wouldC. willD. must56. On Sundays when I was a child, Father and I _______ get up early and go fishing.A. couldB. wouldC. mightD. should57. —You’d better keep quiet in class.—Sometimes I ________ Yesterday, I was very quiet during my English class.A. wouldB. doC. didD. have58. I lived with my sister this summer and didn’t have to pay rent. So I ______ save most of my salary.A. couldB. wouldC. was able toD. should59. —Look, John’s fallen asleep.— Oh, he _______ too late last night.A. might sit upB. should have sat upC. could sit upD. must have sat up60. —I posted the letter a week ago.—Then they __________ the letter by now. It usually takes four days.A. can have receivedB. must receiveC. should receiveD. ought to have received61. He used to teach in that university and I _________ ride past it on my way to work.A. wouldB. couldC. shouldD. might62. —So you have to leave now.—Yes, I __________.—How nice it would be if you could stay a bit longer!A. have toB. ought toC. doD. have63. He _______ Shanghai, for I saw him talking with the headmaster a moment ago.A. must have gone toB. can’t have gone toC. mustn’t have been toD. can’t have been to64. From what I learn about their hotel, the service and the weather, they _____ their holiday very much.A. wouldn’t have enjoyedB. shouldn’t have enjoyedC. needn’t have enjoyedD. can’t have enjoyed65. It is not like Jack to be unfriendly, so he _________ you when you called.A. can’t have seenB. should not have seenC. must not have seenD. need not have seen66. —Many people in England love to give advice on weather reporting.—Yes, but I think the weather office’s computers _________ be more accurate.A. canB. mustC. ought toD. might67. —The farmers lived near the high way.—________ very noisy.A. It must have beenB. They must beC. That might beD. There must be68. She is too slow. She ________ pass the test, but she __________ too little.A. would; knewB. will; knowsC. would; knowsD. will; knew69. —Mary didn’t turn up last time, did she?—No. She_________. We had changed our plan.A. shouldn’t have comeB. needn’t have to comeC. didn’t need to comeD. needn’t have come70. —They haven’t finished the work up to now.—Well, they________.A. shouldB. should haveC. wouldD. must have71. —Shall I go and buy more fruit for the party?—No, I have already bought 3 baskets. That _________ be enough.A. canB. ought toC. mayD. might72. —Why hasn’t the speaker turned up?—He _________ the flight. I’ll find it out at once.A. must have missedB. might have missedC. would have missedD. could have missed73. I _______ pay Tom a visit, but I am not sure whether I will have time this Sunday.A. shouldB. mightC. wouldD. could74. —Who is the girl standing over there?— Well, if you _____ know, her name is Mabel.A. mayB. canC. mustD. shall75. It has been announced that candidates (考生)________ remain in their seats until all the papers have been collected.A. canB. willC. mayD. shall【答案解析】1.D。
情态动词专项练习1. Jean have kept his promise. I wonder why he changed his idea.A. mustB. shouldC. needD. would解析:选B. “should have +过去分词” 表示“过去本来应该(但没能)做某事”;keep one’s promise 意为“信守诺言”。
2. Jane have come to the party, but she not find the exact time.A. could; couldB. might; couldC. should; couldD. should; would解析:选A.“ could have+过去分词表示过去本来应该(但没能)做某事”。
3. So many mistakes in your homework! You more careful.A. may beB. had toC. would beD. should have been解析:选D. “You should have been more careful”. 意为:你本来应该更细心的。
4.Her brother be at home now, because he was seen playing basketball in the stadium just now.A. mustn’tB. needn’tC. can’tD. shouldn't解析:选C. can’t be at home 意为:不可能在家。
5.---I can’t understand wh y our boss is late.---He the early bus.A. could missB. may have missedC. can have missedD. might miss解析:选B. “may have+过去分词”表示对过去动作的判断,意为:可能做了某事。
情态动词专项练习(含答案)1.They must be waiting for me impatiently as I promised to get there before 5 o'clock。
but now the rain is pouring down.2.Even though she had hurt her leg。
he was able to go back alone。
showing his bravery.3.You should pay too much n to your reading skill。
as it is so important.4.The car won't start no matter how many times I've tried.5.The old lady used to sit for hours doing nothing at all.6.Was there a small school here before?7.In summer。
the wind can be pretty cold as our house is on the top of the hill.8.I have told you that you will have the answer tomorrow morning。
haven't I?9.I was surprised that he failed in the match。
(Changed "should" to "was" as it is more appropriate in this context.)10.Shouldn't I go see my sick colleague right now。
(Changed "Better" to "Shouldn't" for better clarity.)11.Sir。
情态动词专项练习(附答案)一、初中英语情态动词1.—Look! The woman at the school gate ______be her headmaster.—No, it ______ be her. She is holding a meeting in the office now.A. must; can'tB. must; mustn'tC. can; needn'tD. may; mustn't【答案】 A【解析】【分析】句意:——看!学校门口的那个妇女一定是她的校长。
——不,不可能是她。
第一空,must表示“一定”;空二,根据She is holding a meeting in the office now. 她现在正在办公室开会,可知,不可能是校长,用can't,表示不可能。
故选A。
【点评】考查情态动词辨析。
注意不同情态动词的用法,注意理解句意。
2.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。
3.You be tired after walking for such a long time. Sit down and have a rest.A. canB. can'tC. mustn'tD. must【答案】 D【解析】【分析】句意:走了这么长时间你一定很累了。
坐下休息一下吧。
can能,能够,can't不能,对事物进行否定推测;mustn't一定不是,禁止,must一定,对事物进行肯定推测,根据after walking for such a long time,可以肯定你一定很累,所以是进行肯定推测,情态动词使用must,故选D。
情态动词专项练习(含答案和解析)1.Our XXX.2.To my joy。
we don't need to go to the bank。
Mary has lent us some money.3.- Do we have to finish this today?Yes。
you must。
Today is the last day.4.Sorry。
smoking is not allowed here。
If you do。
you will be fined according to the rules.5.- Is it really necessary for me to wear a mask when shopping?I'm afraid you must in public。
It is not only to XXX.6.Hurry up。
or we will miss the beginning of the film.7.- How do you like my new dress?Well。
if I must say。
it is not suitable for you.8.- Do the children have to leave at six tomorrow morning?16."Please don't make so much noise。
I can't hear the speaker very well."17."We've discussed every detail of this plan and have got everything ready。
But still something may go wrong。
We still have to be very careful."18."XXX。
英语语法课外辅导篇:情态动词专练1.-May I sit beside you, sir?-No, you ________ . My girlfriend is coming soon.A.can'tB.mustn'tC.needn'tD.shouldn't2.- ________ I speak to May, please?-I'm sorry she ________ come to the phone because she isn't in.A.Might; won'tB.Can; mustn'tC.May; can'tD.Could; shouldn't3.-I want to know if I ________ smoke here.-No, you ________ . Could you see the sign "NO SMOKING" there?A.can; needn'tB.must; can'tC.shall; won'tD.may; mustn't4.My wife never remembers my telephone number. She always ________ look it up.A.mustB.shouldC.wouldD.has to5.- ________ you pass me the English magazine, please?-Sure. Here you are.A.CouldB.NeedC.MustD.Might6.-Must I go to work with you?-No, you ________ . Linda ________ go with me.A.mustn't; canB.can't; has toC.daren't; shouldD.needn't; may7.- ________ I tell Mary the test results?-No, you ________ . She's already got the score.A.Will; won'tB.Shall; needn'tC.May; mustn'tD.Can; don't8.You ________ be careful when crossing here-the traffic lights aren't working.A.mightB.ought toC.couldD.may9.-Could I borrow you bicycle?-Yes, of course you ________ .A.willB.shouldC.canD.need10.Joan ________ come with us this afternoon, but she isn't very sure yet.A.canB.mayC.mustD.will11.I ________ ask you the question because I thought I ________ be wrong.A.daren't; mustB.mustn't; canC.needn't; mayD.can't; should12.It's nearly eight o'clock. Mike ________ be here at any moment.A.needB.has toC.shouldD.can13.The fire spread through the building very quickly but everyone ________ get out.A.had toB.wouldC.couldD.was able to14.-What do you think of his answer?-I don't think it ________ be right.A.shouldB.mightC.mustD.can15.-Is John coming by train?-He should, but he ________ . He likes driving his car.A.can'tB.needn'tC.may notD.mustn't16.He doesn't have to work tomorrow, but you have got to, ________ you?A.don'tB.haven'tC.haven't gotD.can't17.You ________ wake me up when I fall asleep, ________ you?A.haven't better; haveB.would not rather; wouldC.had better not; shouldD.had not better; must18.-Why! I couldn't get you on the phone this morning.-We ________ tennis in the yard when you phoned me.A.could be playingB.must be playingC.must have been playingD.should have played19.-We didn't see him at the lecture.-Neither did anybody else. He ________ it.A.may not have attendedB.mustn't attendC.can't have attendedD.couldn't attend20.-I came here by taxi and the driver charged me 50 yuan.-Really? You ________ have come by bus.A.couldB.mustC.mayD.should21.-Do you still remember when we went to the Great Wall?-I can't remember it well, but ________ it have been sometime last May?A.shouldB.mustC.couldD.would22.-I wonder why Mr Lin didn't come to work.-He ________ have been ill.A.needn'tB.shouldC.mightD.can23.-No one passed the mathematics examination today.-I guess we ________ the exercises last night.A.could reviewB.should reviewC.might reviewD.should have reviewed24.She ________ the hospital so soon, for she hasn't yet recovered.A.wouldn't have leftB.shouldn't have leftC.needn't leaveD.hadn't left25.Why didn't you tell me there was no meeting today? I ________ all the way here through the heavy snow.A.needn't have drivenB.can't have drivenC.must have drivenD.shouldn't have driven答案与解析:1.A。
2.C。
请某人接电话用May/Can/Could I speak to...,please?表否定推测用can't。
3.D。
may表允许。
从NO SMOKING知道是不准、禁止等意思,故用mustn't。
4.D。
表客观上不得不,这是记不住的后果。
A表主观必须,不合题意。
5.A。
表示客气请求,用Will/ Could/ Would you...?6.D。
Must I...?的否定回答用needn't/don't have to。
可能性不大用may。
7.B。
表征询意见用Shall I/he...?用于第一、三人称。
从"她已经拿到分数单了"可知,没必要告诉她考试结果。
8.B。
表建议应该做某事,用should/ought to。
9.C。
回答别人可否借某物时,肯定句用Yes, you can.否定句常用I'm sorry/afraid...表婉言谢绝。
10.B。
从he isn't sure知道,可能性小的肯定推测用may。
11.A。
根据句意:我错了,才不敢问。
12.C。
表本应该,实际并未如此。
13.D。
14.D。
表否定推测,语气肯定。
主句否定词not应转移到宾语从句的谓语。
15.C。
从前后语境看,推测语气不肯定。
16.B。
have to...反问用don't...? have got to...反问用haven't...?17.C。
had better的否定式是had better not,反意疑问句多用should。
18.C。
对过去情况有充分依据的肯定推测。
19.C。
对过去情况可能性的否定推测。
20.D。
表过去本应该做而实际未做某事。
21.C。
对过去情况可能性的疑问推测。
22.C。
表对过去情况可能性较小的肯定推测。
might比may的可能性更小。
23.D。
表过去本该做而实际未做某事。
24.B。
表过去本不该做实际又做了某事。
25.A。
表过去做了本没有必要做的某事。
I. 单项填空。
从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。
1. --- _____ I go out to play now, Mum?--- No, you _____. You should do your homework first.A. Must; mustn’tB. Must; wouldn’tC. May; needn’tD. May; had better not2. _____ you like to have a walk with us this evening?A. DidB. WouldC. ShouldD. Can3. You _____ be careful when you cross here --- the traffic lights aren’t working.A. couldB. mightC. ought toD. may4. We were all waiting for you; you _____ for the seaside by yourself without leaving a message.A. mustn’t leaveB. needn’t leaveC. s houldn’t have leftD. couldn’t have left5. It _____ be she that told him about it; it _____ be you, because only you and I know it.A. mustn’t; mustB. couldn’t; mustC. mustn’t; mightD. couldn’t; might6. A hardworking man _____ become a great scientist, but a great scientist _____ bea hardworking man.A. can’t; canB. may not; canC. can’t; mustD. may not; must7. You _____ go right now if you want, but I think you _____, because we have enough time.A. must; may notB. must; can’tC. may; needn’tD. may; mustn’t8. --- Why do you ask me to do the difficult work?--- Because you _____ do such a thing and nobody else is fit for it.A. wouldB. canC. shouldD. may9. You _____ be tired; you have been working for so long a time, but he _____ be tired; he has just begun to work.A. may not; mustB. must; may notC. can’t; mustD. must; can’t10. It’s said that there are plenty of hotels in that town. There _____ be any difficulty for you to find somewhere to stay.A. wou ldn’tB. mustn’tC. shouldn’tD. needn’t11. Don’t believe him. What he said ______ be true.A. mustn’tB. needn’tC. shouldn’tD. may not12. --- Must I take a bus?--- No, you _____. You can walk there.A. must notB. may notC. don’t hav e toD. had better not to13. --- Do you think he will help me?--- As far as I know, he is the last one to help others. He _____ be prepared to give you a hand, though.A. canB. mustC. mightD. should14. You _____ return the dictionary now. You can keep it till next week if you like.A. can’tB. mustn’tC. don’t needD. don’t have to15. The thief _____ in from the kitchen window as all the other windows and doors were closed.A. may climbB. must have climbedC. could climbD. should have climbed16. --- We want someone to design the new art museum for us.--- ______ the young fellow have a try?A. MayB. ShallC. WillD. Need17. --- Must we do it now?--- No, you _______.A. won’tB. needn’tC. can’tD. don’t18. --- I don’t know why he is late.--- Nor do I. He _____ an accident.A. could have hadB. should have hadC. might have hadD. must have had19. I got up early, but I _____ so because I had no work to do that morning.A. mustn’t have doneB. shouldn’t have doneC. needn’t have doneD. can’t have done20. --- ______ he use your bike?--- Certainly. Here is the key.A. ShallB. MustC. WillD. DoesII. 单句改错。