必备英语中考英语 情态动词练习题(含答案)
中考情态动词基础单选40题
中考情态动词基础单选40题1.You finish your homework before you watch TV.A.mustB.canC.mayD.could答案：A。
“must”表示必须，在这里强调在看电视之前必须完成作业，是一种强烈的要求。
“can”表示能够，“may”表示可能，“could”表示过去的能够或委婉的请求，这三个选项都没有“必须”的意思强烈。
2.We go to the park if it doesn't rain tomorrow.A.mustB.canC.willD.should答案：B。
“can”在这里表示可能性，即如果明天不下雨我们就能够去公园。
“must”表示必须，“will”表示将来会，“should”表示应该，都不符合此语境。
3.She speak three languages.A.canB.mayC.mustD.should答案：A。
“can”表示能力，她能够说三种语言。
“may”表示可能，“must”表示必须，“should”表示应该，都不能表达她具有说三种语言的能力。
4.You borrow books from the library.A.canB.mustC.shouldD.need答案：A。
“can”表示可以，即你可以从图书馆借书。
“must”表示必须，“should”表示应该，“need”表示需要，都不符合此语境。
5.I be late for school today. I got up late.A.mayB.mustC.canD.should答案：A。
“may”表示可能，因为起晚了所以可能会迟到。
“must”表示必须，“can”表示能够，“should”表示应该，都不太符合此语境。
6.We take an umbrella. It might rain later.A.mustB.canC.shouldD.may答案：C。
“should”在这里表示应该，因为可能会下雨所以应该带伞。
中考英语情态动词推测基础练习题40题(带答案)
中考英语情态动词推测基础练习题40题(带答案)1.There is a loud noise coming from the next room. It must be Tom. He is the only one there.A.must beB.can't beC.could beD.might be答案解析：A。
“must be”表示肯定的推测，根据题干中“There is a loud noise coming from the next room. He is the only one there.”可知，有很大的噪音从隔壁房间传来，并且他是那里唯一的一个人，所以可以肯定是汤姆。
“can't be”表示否定的推测，不符合题意；“could be”和“might be”表示可能性较小的推测，也不符合题意。
2.The book on the table isn't mine. It can't be mine.A.must beB.can't beC.could beD.might be答案解析：B。
“can't be”表示否定的推测，根据题干“The book on the table isn't mine.”可知，桌子上的书不是我的，所以用“can't be”。
“must be”表示肯定的推测，不符合题意；“could be”和“might be”表示可能性较小的推测，也不符合题意。
3.Look at that girl. She is singing so beautifully. She could be aprofessional singer.A.must beB.can't beC.could beD.might be答案解析：C。
“could be”表示可能性较大的推测，根据题干“Look at that girl. She is singing so beautifully.”可知，那个女孩唱歌很好听，有可能是专业歌手。
中考英语情态动词练习题50题含答案解析
中考英语情态动词练习题50题含答案解析1.You study hard if you want to get good grades.A.canB.couldC.mayD.might答案解析：A。
“can”表示能力，在这里表示“能够”努力学习；“could”表示过去的能力或委婉语气；“may”表示可能性或允许；“might”表示可能性，语气比“may”更弱。
这里强调的是现在有能力努力学习，所以选A。
2.I borrow your pen?A.CanB.CouldC.MayD.Might答案解析：C。
“may”用于请求许可，语气比较正式；“can”更强调能力；“could”表示委婉请求；“might”可能性最小，这里是请求借用钢笔，用“may”更合适。
3.He finish the work on time.A.canB.couldC.may答案解析：A。
“can”表示能力，这里表示他有能力按时完成工作；“could”过去的能力或委婉语气；“may”表示可能性或允许；“might”可能性最小，这里强调能力，选A。
4. you help me with this problem?A.CanB.CouldC.MayD.Might答案解析：B。
“could”在这里表示委婉地请求帮助；“can”语气比较直接；“may”和“might”主要表示可能性和允许，不太符合语境。
5.She come to the party if she has time.A.canB.couldC.mayD.might答案解析：C。
“may”表示可能性，在这里表示她有可能来参加派对如果有时间；“can”表示能力；“could”过去的能力或委婉语气；“might”可能性比“may”更小。
6.We go to the park if it doesn't rain.A.canB.couldD.might答案解析：A。
“can”表示能够，这里表示如果不下雨我们能够去公园；“could”过去的能力或委婉语气；“may”表示可能性或允许；“might”可能性最小。
初中英语情态动词专项练习(附答案解析)
初中英语情态动词专项练习（附答案解析）一、单选题1．—Must I hand in the homework right now?—That's the rule.A．Yes, you can.B．No, you can't.C．Yes, you must.D．No, you mustn't.1．答案C解析句意：—我必须现在交作业吗？—这是规则。
是的,，你必须。
A. Yes,you can.“是的,你能”；B. No,you can't.“不,你不能”；C. Yes,you must.“是的,你必须”；D. No,you mustn't.“不,你禁止”。
回答must引导的一般疑问句，肯定用must，表示"必须"。
故选C。
点评考查情态动词引导的一般疑问句的回答，掌握情态动词must的用法。
2．You don't look well, you __________ see the doctor.A．ought to B．may C．can D．Might 2．答案A解析句意：你看起来不好，你应该去看看医生。
根据“看起来不好”可以得知是应该去。
A. ought to “应该”；B. may “可能”；C. can“ 会”；D. might“可能”。
故选A。
点评考查情态动词，区分ought to；may ；can和might的含义和应用。
3．What a beautiful day! You ______ take your umbrella at all.A．needn't B．mustn't C．can't D．may not 3．答案A解析句意：多好的天气啊!你根本不需要带伞。
A. needn't “不必”；B. mustn't“禁止”；C. can't“不可能”；D. may not“或许不会”。
中考英语 情态动词 (含答案)
—Wow! This is delicious!
A.must
答案
B.will
C.shall
D.can
B 句意:——尝一尝这个汤,你会喜欢的。——哇!这个很好喝!本题考查情态动词。A:必须;B:会;C:
应该;D:能,可以。根据答句中“这个很好喝”可知此处应该表达“你会喜欢的”,故本题选择B。
5.(2019黑龙江齐齐哈尔,5)—The summer vacation is coming. Have you made a plan for it?
8.(2019广东,42)Dirty air and water are harmful. They kill plants, and even people.
A.can
答案
B.can't
C.should
D.shouldn't
A 句意:肮脏的空气和水是有害的。它们能杀死植物甚至人。本题考查情态动词。can能;can't不
A.must
答案
B.could
C.would
this Sunday.
D.should
C 句意:杰里没有把钱还给我,但是他许诺本周日还我。本题考查情态动词的用法。A.必须;B.可
以;C.会,将会;D.应该。根据he promised及时间状语this Sunday可知宾语从句的时态为过去将来时,故选C
D.needn't
C 句意:——有些人在一开始时没表现出他们的天赋。——我同意。即使爱因斯坦也是到他7岁
时才能阅读。本题考查情态动词。can't不能;mustn't禁止;couldn't不能,can't的过去式;needn't不需要。根
中考英语情态动词练习题40题
中考英语情态动词练习题40题1.We _____ be careful when crossing the road.A.mustB.canC.could答案：A。
“must”表示必须，过马路时我们必须小心，“can”表示能够，“could”表示过去能够或者委婉的请求等，这里强调过马路要小心，是一种必须的行为。
2.In the library, you _____ keep quiet.A.mustB.canC.could答案：A。
在图书馆必须保持安静，“must”符合语境，“can”表示能够，“could”表示过去能够或者委婉的请求等。
3.You _____ borrow my book if you promise to take good care of it.A.canB.mustC.could答案：A。
这里表示如果你承诺好好保管，你可以借我的书，“can”表示能够，“must”表示必须，“could”表示过去能够或者委婉的请求等。
4.She _____ sing very well when she was young.A.canB.couldC.must答案：B。
表示她年轻时能够唱歌很好，“could”表示过去能够，“can”表示现在能够，“must”表示必须。
5.We _____ finish our homework on time.A.mustB.canC.could答案：A。
我们必须按时完成作业，“must”符合语境，“can”表示能够，“could”表示过去能够或者委婉的请求等。
6.You _____ come to my party if you are free.A.canB.mustC.could答案：A。
如果你有空，你可以来我的派对，“can”表示能够，“must”表示必须，“could”表示过去能够或者委婉的请求等。
7.He _____ swim when he was five years old.A.canB.couldC.must答案：B。
100例：初中九年级中考英语情态动词专项练习附答案
初中英语：情态动词真题100题第一部分:1-50练习及答案第二部分:51-100练习及答案1．—Mum, it's too hot. May I swim in the lake?—No, you ____. That's too dangerous.A．mustn't B．needn't C．couldn't2．—Look! Mr. Smith is standing there.—It be him. He is in New York now.A．can't B．mustn't C．couldn't3．I'd like to make something special for dinner. _____ I borrow your cookery book?A．Should B．Must C．Need D．May 4．—Whose toy car is this?'—It ________ belong to Jim, because he is the only little child at the picnic.A．would B．need C．must D．can5．Look at the "No Photos" sign. You _______ take photos in the art museum.A．mustn't B．needn't C．should6．—Whose hair band is this?—It _____ be Grace's. She is the only girl at the meeting.A．might B．wouldn't C．must D．can't7．—Listen! Someone is knocking at the door. Who______ it be?—Maybe it's Meituan's delivery(外卖员). I'll answer the door.A．could B．need C．must8．—Will Dad arrive home at 6 o'clock to have dinner with us this evening?—I think he will, but he_____ not. Sometimes he works for more hours.A．can B．must C．may9．—Morn, why am I so sleepy these days? I even fall asleep in today's class.—The medicine you take_____ cause it, but I'm not so sure.A．must B．might C．would10．—Many students feel stressed out because of too much schoolwork.—Don't worry. After-school courses are not allowed to be taken. Students _____ have more free time to enjoy themselves.A．can B．have to C．needed11．—A 14-year-old girl, Quan Hongchan, won at the 2020 Tokyo Olympics.—Nothing _____ without hard work. It took much effort for Quan to learn skills.A．can achieve B．will achieve C．will be achieved 12．—Where's Jack? His phone's out of service.—He_____ be on the ground floor. The phone can't get signal(信号) there.A．must B．can't C．might13．—Is it really necessary for me to go shopping with a mask(口罩)on?—I'm afraid you_____ in public. It's not only to protect yourself but also to protect others.A．should B．can C．must14．—_____ I have two tickets for the Chinese Farmers' Painting Exhibition?—Sorry. The tickets have been sold out.A．Must B．Need C．May15．—Who is playing the piano in the music room? Is it Mary?—No, it ___________be her. She has ___________to Beijing on business.A．couldn't; been B．can't; goneC．can't; been D．mustn't; gone16．—Whose physics book is this?—It _____be Helen's because her name is on it.A．mustn't B．must C．might D．can't 17．—David, do you know Su Yiming, a snowboarder from China?—Sure. He won the first place in the men's Big Air Event. He_____________ be hard-working.A．needn't B．can't C．should D．must 18．The boy ________ be Tom. I saw him reading in the library just now.A．shouldn't B．can't C．needn't19．— Mike, I can't stop playing computer games.— For your eyes, my dear friend, I'm afraid you____.A．could B．may C．would D．have to 20．—I can't find my dictionary. ________ I use yours?—Sure, here you are.A．Need B．May C．Must D．Should21．—_________ I take photos here?—Sorry, you can't. It's not allowed in the museum.A．Must B．Need C．Can D．Will22．To achieve our dream, we ________ rest on what we have done.A．may not B．should not C．need not D．could not23．—I don't care what Kate thinks.—Well, you _______. Her suggestions are of some value.A．would B．should C．might D．could 24．—Whose English book is this?—It _______ be Lily's, but I'm not sure.A．might B．can't C．must25．You ________ drive without a license!A．can B．must C．mustn't D．may26．When our parents become too old to take care of themselves one day, they __________ be looked after well by us.A．should B．shouldn't C．may D．may not 27．—Excuse me. _______ I sit here?—You'd better not. It's the man's seat.A．Must B．Need C．Could D．Should28．We should learn some basic life skills since we ________ depend on ourselves some day.A．can B．can't C．must D．mustn't 29．—Can we play games here?—Better not. If you ________, please go to the open space there.A．must B．can C．may D．will30．—The paper cutting is pretty lively, who made it?—It ________ be Amy. None of us except her is able to do it.A．would B．need C．must D．can31．— ________ you tell us a story in English?—I think I can do it. Let me try.A．Need B．Can C．Should D．Must32．—Look! Mark is reading a book in the library.—It ______ be him. He is in the classroom.A．can't B．wouldn't C．needn't33．—Listen! I think it ________ be Mrs. Li singing in the next room.— It ________ be her. I know she has already left for New York.A．may, must B．must, can't C．must, mustn't 34．—Whose is this toy truck?—It _________ belong to Dick. He was the only little kid at the picnic.A．can't B．must C．could D．need 35．—What kind of music do you like?—I like music that I ______ dance to.A．can B．must C．should D．need 36．—Alex, come down to play football.—I can't. Mom said I __________ clean my bedroom before doing anything else.A．had to B．will C．used to D．can37．The book ______ be Mary's. We can see her name on it.A．need B．must C．can't D．needn't 38．—To make our school more beautiful, we _____throw the rubbish on the ground.—Everyone should play an important part in doing it.A．needn't B．mustn't C．may not39．Jim can swim, but I________.A．don't B．can't C．am not40．—Wow! Here is an offer of Tsinghua University! _______it be Bob's?—It must be Bob's, he is the most excellent student in our school.A．May B．Can C．Must D．Shall41．You ________ pay too much attention to your reading skill as it's very important.A．shouldn't B．needn't C．mustn't D．can't 42．—Have you decided how to spend this weekend with your family, Lingling?—Not yet. We ____ go camping along Nanxi River to enjoy beautiful sights.A．must B．should C．need D．may43．— No one knows what it will be like tomorrow because there are many possibilities such diseases, disasters(灾难) and so on.— Yeah, but sometimes the facts show that humans stronger than the forces of nature.A．can't be B．can be C．mustn't be 44．The girl in the classroom ____ be Maria. She called me from the library just now.A．mustn't B．may not C．can't D．needn't 45．—Could you tell me how to renew the library books?一With pleasure. You________ come to our desk every time. It's easier to renew them online.A．can't B．mustn't C．shouldn't D．needn't 46．—Mom, can I watch TV this evening?—You ________ finish your homework first.A．can B．may C．must D．shall 47．— Whose toy car is this?—It be Sally's. She's the only little kid at the dinner party.A．should B．must C．might D．can't 48．—A country has dreams. We teenagers also have dreams.—With dreams and hard work, anything amazing can be created.A．should B．may C．must D．can 49．—Is that Li Ming over there?—It___ be him. He is working as a volunteer in Henan.A．can't B．mustn't C．must 50．—Some Chinese scientist are now doing research on sea rice.—If farmers__________ start planting rice in salty water, Chinese food supply will surely rise.A．can B．can't C．must D．mustn't答案解析部分1．A2．A3．D4．C5．A6．C7．A8．C9．B10．A11．C12．A13．C14．C15．B16．B17．D18．B19．D20．B21．C22．B23．B24．A25．C 26．A 27．C 28．C 29．A 30．C 31．B 32．A 33．B 34．B 35．A 36．A 37．B 38．B 39．B 40．C 41．D 42．D 43．A 44．C 45．D 46．C 47．B 48．A 49．A 50．A第二部分:51-100练习及答案1．—Someone is knocking at the door. Maybe Peter has come.—It be Peter because he has gone to New Zealand.A．can't B．may C．mustn't D．shall 2．—Mr. Wang, must I come again to clean the classroom on Sunday?—No, you . I have asked Kate to do it.A．can't B．mustn't C．needn't D．shouldn't 3．—________I return the book today, Mr. Lin?—No, you ________. You can keep it for two days.A．May; mustn't B．Must; mustn'tC．Must; needn't D．Can; shouldn't4．—Do you have any plans for the coming summer holidays?—I take part in some volunteering activities. I haven't decided.A．need B．may C．must D．could 5．—Must I go to Nanyang Square this afternoon to see him?— No, you . You can wait for his call.A．mustn't B．can't C．needn't D．shouldn't 6．—Jack must be in his office, I think.—No, he be in the office. He flew to Canada this morning.A．needn't B．shouldn't C．can't D．mustn't 7．— Is it Jay who didn't hand in the history homework this morning?— No, it ________ be Jay. History is his favourite subject.A．can't B．needn't C．shouldn't D．mustn't 8．—Tom, we play King of Glory(王者荣耀) together this weekend?—I'm afraid not. There is too much homework to do. We finish it on time.A．shall; can't B．may; must C．shall; should D．can; will 9．—Must I go to medical school and be a doctor like you, Dad?—No, you ________, son. You're free to make your own decision.A．can't B．shouldn't C．needn't D．mustn't 10．—Life is becoming convenient with the Internet.—That's true! Almost everything ______ be done online.11．—Dad, I've signed for the box. What's in it?—I'm not sure. It _____ be a present from your uncle.A．need B．must C．may D．will 12．—Sixty dollars for such a T-shirt! You be joking!—I'm serious. It's made of silk from Hangzhou.A．must B．need C．will D．can 13．— Mum, may I go swimming now?—Yes, dear, but remember that you ___________go with your dad.A．may B．can C．must D．should 14．—Could I invite my friends to our party on Sunday, mom?—Of course you _____. That sounds great.A．may B．can C．could D．must 15．— Hi, Tom! Is this new red bike Tim's? He told me he bought a new one.— It _______ be Tim's. He never buys things in red.A．can B．must C．can't D．mustn't 16．I love the weekend because I _______ get up early to go to school.A．can't B．mustn't C．needn't D．shouldn't 17．—Look! It _____ be John on the playground.—It_____ be him. I saw him in the classroom just now.A．may, mustn't B．must, can't C．can can't D．mustn't, can 18．—Mum, must I finish my homework today?—________. You may do it tomorrow morning.A．No, you mustn't B．No, you needn't C．Yes, you must 19．—I missed last night's Everlasting Classics（《经典咏流传》）！—You care. You can watch it online later.A．mustn't B．can't C．may not D．needn't 20．He _________ work on the farm every day. I'm sure about that because his skin is very black.A．can't B．may C．must D．couldn't 21．— Mom, I eat the sandwiches now ?— No. You must set the table first.22．— Mom, must I wash the clothes now?— No, you . You wash them in the afternoon.A．mustn't; must B．needn't; must C．mustn't; can D．needn't; can 23．—Whose is the notebook?—It ________ be Mary's. Look at her name on the cover.A．can B．may C．must D．need24．—Why don't you stay a little longer？—Sorry, I . I have to meet my uncle at the airport.A．must B．should C．needn't D．can't 25．Parents encourage their children to take part in volunteer work. It will have a good influence on themA．should B．mustn't C．might D．can't 26．—Listen! Is Millie playing the violin in the music room?—No. It be her. She has gone to the teachers' office.A．should B．must C．needn't D．can't27．You be tired after walking for such a long time. Sit down and have a rest.A．can B．can't C．mustn't D．must28．—Look! Is the man wearing a white shirt your father?—No, it ________be him. He is picking up my sister at the airport.A．may B．must C．can't D．mustn't29．—________ you leave now? You only arrived here an hour ago.—Sorry, but so much homework is waiting for me.A．May B．Must C．Can D．Might30．The magazines on the bookshelf are free for students. You keep one if you like.A．need B．must C．can D．should 31．Children under 12 years of age in that country go together with their parents when in a public library.A．must B．may C．can D．need32．—Who it be that is knocking at the door?—It be father, but I'm not sure.A．call; must B．can; may C．must; can D．may; must 33．—Lucy doesn't mind lending you her bike.—She , I've already borrowed one.A．can't B．mustn't C．needn't D．shouldn't 34．—Is there a flight to Paris this evening?—There be. I'll phone the airport and find it out.A．must B．would C．might D．can 35．—Must I stay here with you?—No, you . You may go home, but you go to the net bar(网吧).A．mustn't; needn't B．needn't; mustn'tC．must; need D．need; must36．—It's so late. Our son be back!—Don't worry. I dare say he have some extra work to do.A．can; must B．will; might C．should; must D．must; may 37．Marie witnessed everything but it is amazing that she have say nothing about the murder.A．can B．may C．must D．should 38．—Listen! Someone is singing in the next room. Who it be? Is it Linda?—No, it be her. She is at school now.A．may, can't B．must, mustn't C．will, may not D．may, won't 39．I'm feeling much better now so you ______ call the doctor.A．couldn't B．wouldn't C．can't D．needn't 40．—I'm a little tired. Let's go shopping by taxi.—We ______take a taxi. It's not far from here.A．mustn't B．couldn't C．needn't D．can't41．If you study harder, you will______ go to college.A．be able B．can C．be able to D．able to 42．When traffic lights are red, we stop and wait.A．should B．must C．need D．can 43．—Joe, what are you looking for?—My model plane. I ________ find it because it is a gift from my dearest grandpa.A．would B．must C．could D．can44．—What are you doing this weekend?—I'm not sure, but I ________go to Daming Lake.A．might B．must C．should D．need 45．— ____ I play computer games now, Mom?— No. You ______. You have to finish your homework first.A．May; mustn't B．Can; couldn't C．May; could D．Can; may not 46．— Someone is knocking at the door. Is it Ann? I've been waiting for her so long.—I'm sorry, it _____ be her. I saw her staying at school half an hour ago.A．may not B．shouldn't C．can't D．mustn't 47．— Excuse me, could you help me check if _________ tomorrow?— Ok. If you _____.A．the game will take place; mustB．the game is going to take place; needC．the game takes place; shouldD．the game is taking place; must48．—Marcus, could I have a look at your new mobile phone?—Of course you . Here you are.A．may B．could C．must D．can 49．—Can't you stay a little longer?—It's getting late I go now. My daughter is home alone。
中考英语情态动词推测基础练习题40题
中考英语情态动词推测基础练习题40题1.There is a loud noise coming from the classroom. It may/might/could be the students having a discussion.maymightcould答案解析：三个选项都可以表示可能性，may 的可能性相对较大，might 次之，could 再次之。
这里题干只是说有很大的噪音从教室传来，不确定具体情况，所以三个选项都有可能，但可能性都不是很大，因此三个选项在这个语境中都可以。
2.The book on the table may/might/could belong to Tom.maymightcould答案解析：may 的可能性相对较大，might 次之，could 再次之。
桌子上的书不确定是谁的，只是猜测可能属于汤姆，三个选项都有一定可能性，但都不确定，所以三个选项在这个语境中都可以。
3.There is someone at the door. It may/might/could be the postman.maymightcould答案解析：may 的可能性相对较大，might 次之，could 再次之。
有人在门口，不确定是谁，只是猜测可能是邮递员，三个选项都有一定可能性，但都不确定，所以三个选项在这个语境中都可以。
4.The light in the room is on. Someone may/might/could be in there.maymightcould答案解析：may 的可能性相对较大，might 次之，could 再次之。
房间灯亮着，不确定是否有人在里面，只是猜测，三个选项都有一定可能性，但都不确定，所以三个选项在这个语境中都可以。
5.I saw a figure in the distance. It may/might/could be a person.maymightcould答案解析：may 的可能性相对较大，might 次之，could 再次之。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
必备英语中考英语情态动词练习题(含答案)一、初中英语情态动词1．— Dick, ________ I use your e-dictionary? — Yes, sure. ________ you give it to David after you use it?A. will; WouldB. may; MightC. can; CouldD. shall; Should【答案】 C【解析】【分析】句意:一Dick我可用一下你的电子词典吗?一当然可以。
在你用完后你能把它给他David吗？根据句意及题干分析第一空表示请求允许，所以可以用may或can;第二空是表示对别人的请求.所以用could表示更加委婉，故选C。
2．—Life is becoming convenient with the Internet.—That's true! Almost everything ______ be done online.A. mustB. couldC. shouldD. can't【答案】 B【解析】【分析】句意：——生活正随着网络变得方便。
——那是真的。
几乎所有的事情可以在网上完成。
A必须，B可以，C将，D不能。
根据 Life is becoming convenient with the Internet. 生活正随着网络变得方便，可知应该是很多事情可以在网上完成，故选B。
【点评】考查情态动词。
注意理解和掌握情态动词的不同用法。
3．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。
4．—Shall we meet at the station at 9 a.m.?—In fact we ______. The train ______until 11a.m.A. needn't; will leaveB. needn't; won't leaveC. mustn't; leavesD. mustn't; doesn't leave【答案】 B【解析】【分析】句意：—我们上午9点在车站见面好吗？—事实上我们不需要。
火车直到11点才离开。
needn't情态动词，不需要，没必要；mustn't情态动词，不允许，语气强烈，本题含义只是“不需要”,并没有“禁止、不许”这样强烈的语义。
not...until...，意为“直到...才...”，表示将来发生的事情，所以使用一般将来时态的否定形式won't。
故选：B。
【点评】考查情态动词辨析，固定搭配not...until...。
一般将来时态。
5．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。
6．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。
【点评】此题考查情态动词。
弄清每个情态动词的使用规则，根据句意确定所使用的情态动词。
7．— Is this e-dictionary Jack's?— No, it_______ his. His is much newer.A. can't beB. mustn't beC. may beD. should be【答案】 A【解析】【分析】句意：-这个电子字典是杰克的吗？--不可能是他的，他的更新些。
must,can（could）,may（maight）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（maight），表示可能性猜测，可能……。
根据后文的依据，可知是否定猜测，故选A8．—Where is Monica? I can't find her anywhere.—She be in the library. She loves reading books when she is free.A. mustB. needC. can't【答案】 A【解析】【分析】句意：——莫妮卡在哪？我到处都找不到她。
——她肯定在图书馆，她喜欢空闲时看书。
A肯定，肯定句中表示推测，B需要，C不可能，否定句中表示推测，根据 She loves reading books when she is free ，可知是肯定句表示推测，故选A。
【点评】考查情态动词，注意情态动词表推测的用法。
9．— We've ordered too much food. I eat any more.—Never mind. Let' take it home.A. can'tB. mustn'tC. needn'tD. shouldn't【答案】 A【解析】【分析】句意：——我们已经点了太多的食物，我不能再吃了。
——没关系，我们带回家吧。
can't不能；mustn't必须不；一定不要；needn't不必；shouldn't不应该。
根据句意可知选Ａ。
【点评】考查情态动词辨析。
10．—Where is George?—He _______ be here just now. His coffee is still warm.A. needB. can'tC. mustD. shouldn't【答案】 C【解析】【分析】句意：——乔治在哪里？——他刚才一定在这里，他的咖啡还是热的。
A. need需要； B. can't 不能，不可能（表示推测）； C. must 必须，一定（表示推测）； D. shouldn't不应该；根据His coffee is still warm.可知表示肯定推测一定在这儿；故答案为C。
【点评】考查情态动词。
掌握情态动词表推测时的意义和用法。
11．——Do you have any plans for this summer vacation? ——I'm not sure. I ___ take a trip to Taiwan.A. mustB. needC. mayD. should【答案】C【解析】【分析】句意:一今天暑假你有什么计划吗?一我还不确定。
我可能去台湾去旅行。
A.必须，一定;B.需要，必要;C.可能;D.应该。
根据句中I'm not sure可知，说话人还没有确定的计划，所以这只是一个可能，应选C。
12．——You look pretty in green, Kate. ——Thank you. I like green. Green ______give me energy.A. canB. mustC. shouldD. has to【答案】A【解析】【分析】句意:一一凯特，你穿看绿色的衣服很漂亮。
一一谢谢，我喜欢绿色。
绿色给我能量。
A.能，表示能力;B.must必须，强调主观愿望;C.应该，强调责任与义务;D.必须.强调客观要求。
绿色能给我力量，我喜欢。
故选A。
13．You __________ write the poem down. Our teacher will give us a copy soon.A. needn'tB. mustn'tC. shouldn'tD. can't【答案】A【解析】【分析】句意:你不需要把诗抄下来，老师很快会给我们一份。
A.不必;B.不准，禁止，不允许;C.不应该，表示责任、义务;D.不能，表示能力，不可能，表示否定的推测。
老师要给我们一份，所以不必抄写。
故选A。
14．Now all passengers show their ID cards and go through the safety check before they take a train.A. wouldB. mayC. couldD. must【答案】 D【解析】【分析】句意：现在所有的乘客必须出示身份证并通过安检，才能上火车。
A.愿，要;B.可以;C.可以，表示许可，可能，表示肯定的推测;D.must必须。
旅客必须出示身份证并通过安检才能上火车，必须:must。
故选D。
15．—I've bought all the food for the party tonight.—Thank you. Then I _______ go to the supermarket.A. can'tB. mustn'tC. shouldn'tD. needn't【答案】 D【解析】【分析】句意：－今天晚上我买好了所有晚会的食物。
－谢谢你。
那么我就不必去超市了。
A. can't不能；B. mustn't不准，不允许，禁止；C. shouldn't不应该；D. needn't 不必。