1、情态动词专项练习1. Richard _ be at home because he phoned me from the office just now.A. needntB. mustntC. cantD. shouldnt【答案】C【详解】句意：理查德不可能在家，因为他刚才从办公室给我打了电话。考查动词辨析。neednt不需要；mustnt禁止；cant不可能; shouldnt不应该。根据“because he phoned me from the office just now”可知，此处表示否定推测，故选C。2.Could I ride an electric bicycle to
2、 school, Mr. Wang?No, you_. Students under the age of 16 arent allowed to ride electric bicycles.A. couldntB. needntC. cantD. wouldnt【答案】C【详解】句意：王先生，我可以骑电动自行车去学校吗？不，你不可以。16岁以下的学生不允许骑电动自行车。考查情态动词及一般疑问句。根据“Could I”可知，上文表委婉的请求，肯定回答是Yes, 主语+can；否定回答是No, 主语+cant；本句表示拒绝请求，故用cant表不可以。故选C。3. The biggest cha
3、llenge we all face is to prevent further environmental disasters. We _ take action before it is too late.A. canB. mustC. mayD. might【答案】B【详解】句意：我们面临的最大挑战是防止进一步的环境灾难。我们必须采取行动，否则就太晚了。考查情态动词。can能，会；must必须；may可能；might可能。根据“The biggest challenge we all face is to prevent further environmental disasters.”
4、可知，问题比较严重，所以必须采取行动。故选B。4 According to the new traffic rules, people _ wear a helmet when riding an e-bike.A. mightB. mayC. canD. must【答案】D【详解】句意：根据新的交通规则，人们骑电动车时必须戴头盔。考查情态动词。might可能；may可能；can能够；must必须；根据“According to the new traffic rules”及语境可知，此处表达的是必须，指人们必须戴头盔，故选D。5.Simon, Im afraid we cant comple
5、te the model spaceship this afternoon. Well, we _ finish it today. Its fine if we give it to Mr. Wang tomorrow.A. cantB. mustntC. needntD. shouldnt【答案】C【详解】句意：Simon，恐怕今天下午我们完成不了宇宙飞船模型了。好的，我们今天不必把它做完。我们明天给王先生就可以了。考查情态动词辨析。cant不可能；mustnt禁止；neednt不必；shouldnt不应该。根据“Its fine if we give it to Mr. Wang tom
6、orrow”可知，不必今天做完，故选C。6. Excuse me, can I borrow this book?Sure, but you _ return it by the end of this term.A. canB. cantC. mustD. mustnt【答案】C【详解】对不起，我能借这本书吗? 当然可以，但你必须在本学期结束前归还。考查情态动词。can能，可以；cant不能，不可以；must必须；mustnt禁止。根据句中转折连词but可知，这里指必须学期结束前归还，故选C。7. Dont you know passengers _ smoke on high-speed
7、trains？A. needntB. mustntC. wouldntD. couldnt【答案】B【详解】句意：你不知道乘客在高速列车上不许抽烟吗？考查情态动词。neednt不必；mustnt不许, 禁止；wouldnt将不会；couldnt不能；根据句意可知，在高铁上是禁止吸烟的, mustnt表示禁止，故选B。8.What will the weather be like tomorrow?It _ be rainy, cloudy or sunny. I am not sure.A. mustB. mayC. cantD. should【答案】B【详解】句意：明天天气如何？可能是雨天，
8、多云或晴天。我不确定。考查情态动词用法。must必须，一定，表肯定推测；may可能，表肯定推测；cant不可能，一定不，表否定推测；should应该，不表推测。此处是情态动词表推测，排除选项D；根据空后“ be rainy, cloudy or sunny. I am not sure.”可知，此处是肯定推测，并且表“可能是雨天，多云或晴天”，排除选项C和A。故选B。9. My car is broken. _ you please give me a lift?A. MustB. NeedC. ShouldD. Could【答案】D【详解】句意：我的车坏了。你能让我搭个便车吗？考查情态动词。
9、Must必须；Need需要；Should应该；Could可以。根据“My car is broken.”可知车坏了，请求搭便车，用Could you please .?句型表示请求。故选D。10. “Gina, whose book is this?” “It _ be Carlas. Charles Dickens is her favorite writer.”A. must B. can C. mayD. need【答案】A【详解】句意：“吉娜，这是谁的书？”“一定是卡拉的。查尔斯狄更斯是她最喜欢的作家。”考查情态动词。must一定；can能；may可能；need需要。根据“Charle
10、s Dickens is her favorite writer.”可知，这本书一定是Calas的，较为肯定的推测用must，故选A。11. Is that man your friend Tom?That man _ be him, because he has gone to Canada.A. cantB. mustntC. needntD. had better not【答案】A【详解】句意：那个人是你的朋友Tom吗？那个人不可能是他，因为他去了加拿大。考查情态动词辨析。cant不可能；mustnt禁止；neednt不需要；had better not最好不。根据“because he
11、 has gone to Canada.”可知，推测不可能是Tom，否定推测用cant，故选A。12.Hey, Clark. Would you like to have a picnic with us this weekend?Sorry, Ill have an exam next Monday, so I _ prepare for it.A. can B. may C. mustD. might【答案】C【详解】句意：嘿，Clark。这个周末你愿意和我们一起去野餐吗？抱歉，我下周一有一场考试，所以我必须为它做准备。考查情态动词。can能够；may可能；must必须；might可能。根
12、据“Ill have an exam next Monday”可知，必须为考试做准备，故选C。13.Must I wash my clothes at once, mom?No, you _. You _ wash them before 5:00 p.m.A. neednt; mayB. mustnt; mayC. neednt; needD. mustnt; must【答案】A【详解】句意：妈妈，我必须马上洗我的衣服吗？ 不，你不必。你可以在下午五点前洗。考查情态动词。neednt没必要；may可以，可能；mustnt禁止；need需要；must必须，一定。根据“Must I wash m
13、y clothes at once, mom?”可知，第一空为Must引导的一般疑问的否定答语，要用neednt或dont have to，所以第一空用neednt；根据“wash them before 5:00 p.m.”可知，没必要现在洗衣服，可以在下午五点前洗，第二空用“may”表示“可以”。故选A。14.Hi, Carl! Im leaving for Chengdu this weekend.Cool! But I _ get away until the end of July.A. shouldntB. cantC. needntD. mustnt【答案】B【详解】句意：嗨，卡
14、尔！这个周末我要去成都。太酷了！但我要到七月底才能离开。考查情态动词辨析。shouldnt不应当；cant不能；neednt不需要；mustnt禁止。根据前句“Cool!”的语境和but的提示可知，应是不能离开。故填B。15.Have you decided where to spend your holiday?Not yet. We _ go to Beijing.A. may B. must C. should D. need【答案】A【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“
15、需要”均与句意不符。故选A。16. In some countries，people _ download(下载) music from the Internet without paying，because its against the law.A. wouldnt B. neednt C. mustnt D. couldnt21c【答案】C【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。mustnt相当于not have to，意为“不允许”。故选C。17. May I take the dog with me，sir?_. Pets are not all
16、owed to enter the hall.A. Yes，you may B. No，you mustnt C. Yes，you can D. No，you neednt【答案】B【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。18.The tall man with glasses over there looks like our math teacher.It _ be him. He has g
17、one abroad.A. may not B. mustnt C. cant D. neednt【答案】C【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。cant表示否定推测，意为“不可能”。故选C。19.Life is becoming convenient with the Internet.Thats true! Almost everything _ be done online.版权所有A. 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
18、都能在网上办理。must必须；would将会；should应该；can能够。故选D。20. Now most young people like shopping online because they _ spend a lot of time going from shop to shop.A. neednt B. cant C. mustnt D. shouldnt【答案】A【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。neednt 不必；cant 不能；mustnt 不可以；shouldnt 不应该。故选A。21. All done! Lets sw
19、im，Martine!Swimming! I just _ get used to it in winter.A. cant B. shouldnt C. mustnt D. neednt【答案】D【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neednt。故选D。22.Will Dad be back home at 6 oclock this evening?He should，but he _ not. Sometimes he exercises after work.A. can B. must C. need D. may【
20、答案】D【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”。故选D23. Life is like riding a bicycle. To keep your balance，you _ keep moving.A. can B. mustC. cant D. mustnt【答案】B【解析】can能；must必须；cant(不能)；mustnt(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。24. I see your ID card, sir? We have
21、to check your information.A. May B. Must C. Should D. Need【答案】A【解析】考查情态动词的运用。向别人请求许可可用can，may。根据句意，“我可以看一下你的身份证件吗？我们不得不核实你的信息。”可知此处表示请求许可，故答案应选A。25. May I go out for a while, Mom?No, you . You have to finish your homework first.A. shouldnt B. neednt C. mustnt D. wont【答案】B【解析】考查情态动词的用法。句意：妈妈，我可以出去一会吗
22、？不，你不能。 你必须首先完成你的作业。shouldnt不应该；neednt不必要；mustnt一定不能，表示明令禁止；wont将不能。根据答语，你必须首先完成你的作业，可知不同意出去玩。故选B。26. Have you decided where to go for your summer vacation?Not yet. We _go to Qingdao. Its a good place for vacation.A. may B. need C. mustD. shall【答案】 A【解析】本题考查情态动词。句意：你已经决定到哪里过暑假了吗？还没有呢，我们也许去青岛。那是个度假的好
23、地方。情态动词表示推测时，may表“可能”，must表“一定”，cant表“不可能”。故答案为A27. Drivers _ wear seat belts while their cars are running on the road. A. needB. canC. mustD. may【答案】C【解析】考查情态动词的用法。句意为“司机必须系安全带当车在路上行驶的时候。”must的意思是“必须”，符合句意。故选C。28. _I swim here?No, you _. Look at the sign “No swimming”.A. Must：cant B. Can; dont C. C
24、an; mustntD. Must；dont【答案】 C 【解析】本题考查情态动词的用法。must引导的问句，否定回答用neednt或dont have to，排除A项；can 引导的问句，否定回答用cant，排除B项；由句意 “我可以在这里游泳吗？” “不，千万不要。看一下那个标牌禁止游泳。”可知C项符合题意。29. A country has dreams. We teenagers _ also have dreams. With dreams and hard work, anything amazing can be created. A. may B. must C. should
25、 D. might【答案】C 【解析】考查情态动词。一个国家有梦想，我们青少年也有梦想，有梦想和努力工作，任何奇迹都能创造。may “可以”；must “必须”；should “应该”。根据题意选C。30. You mustnt go off on your own, because you _get lost in the mountains.A. should B. must C. need D. might【答案】D【解析】考查情态动词的用法。根据句意“你不许一个人去，因为你可能在大山里迷路”， might 意为“可能”，表猜测。故选D。31. _ I help you, sir? Ye
26、s. I want a T-shirt.A. Can B. Should C. Must D. Would 【答案】A【解析】考查情态动词辨析。根据答语“Yes. I want a T-shirt.”判断问句是售货员常用的问候语“Can I help you?”。所以答案选A。32. Whose T-shirt is this? It _ be Johns. Its _ small for him.A. cant; much too B. cant; too much C. mustnt; too muchD. mustnt；much too【答案】A【解析】考查情态动词和固定短语辨析。句意：这是谁的T恤？ 不可能是约翰的。对他来说太小了。cant表示推测时，表示不可能；mustnt 不可以，表禁止；too much太多；much too = very“很，太”的意思（修饰形容词或者副词）。根据句意，所以选择答案A。
