小学英语情态动词练习题附答案.doc

小学英语情态动词练习题附答案一、选择题1Be careful! Fire _ be dangerous sometimes. OK. I will put it out right away.AmustntBshouldCcanDneednt2My bike was broken yesterday，so I_walk home AmightBhad toCmustDcould3Do we have to finish this today?Yes, you _ . Today is the last day.AwouldBmayCcanDmust4Sorry, smoking is not allowed here. If you _ , you will be fined according to the rules.AcanBwillCmayDmust5Could I join you in the programme?Sorry, you _. You are too young.AshouldntBmustntCcantDneednt6You _ require others to do with the problem like you. Everyone has his own way.AmustntBneedntCmay notDshouldnt7I must go to school today, _?No, you _.You can go as soon as you get well.Amustnt I;needntBneednt I;needntCmustnt I;mustntDneednt I;mustnt8 Why didnt you tell it to me earlier? Why _ I? I want to have my own secret.AcanBmayCshouldDshall9Whos singing next door? Is it Miss Wang?It _ be her. Shes having the board meeting.AcantBshouldntCmustntDneednt10There is a knock at the door.It _ be my mom. She always comes back home at this time.AmayBmay notCmustDcant11You _ be careful with the camera. It costs!AcanBwillCshouldDmay12Dad, must we wait until the light becomes green? Yes, I am afraid we _. Thats the traffic rule.AmayBcanChave toDneed13 Is Lang Lang going to perform at Art Center this Friday? Yes. It _ be him. He has been here for three days.AmightBmustCmustntDmay14You _ write the report again because spelling mistakes are not allowed at all.AmustBcanCmayDcould15I _ hear you clearly. Would you please repeat it?AmustntBcantCneedntDshouldnt16A lot of online resources _ be used either by teachers at school or parents at home.AcanBshouldCneedDmust17Its amazing that the pen _turn voice into text with few mistakes.AcanBmustCmayDneed18If you buy your mum an iRobot floor cleaner, she _ sweep the floor every day.AcantBmustntCneedntDshouldnt19-Will you be back early this evening?-Yes, but I _ be a little late. Our boss sometimes has extra work for us.AmayBmustCneedDwill20The high school entrance examination is coming! Yes, our teacher tells us we _ be too careful while taking exams.AmustntBshouldntCneedntDcant21Mr. Black _ be at home now. He went abroad on vacation last Friday.AcantBmustntCneedntDshouldnt22Is that Mr Zhou?It _ be him. He has gone to Beijing.AcanBmayCcantDshouldnt23Most young people like shopping online because they _ spend much time going from shop to shop.AneedntBcantCmustntDshouldnt24 Mum, why do I have to wash hands so many times a day?You _ be too careful, for your health.AcantBmustntCmay notDneednt25I think all the students love the weekends because, to them, they _ get up early on Saturdays or Sundays.AmustntBdont needCneedntDcant26 Is the boy over there Tom? He often wears a jacket like that. It _ be him. He is absent from school today.AneedntBshouldntCmustntDcant27When people are waiting at the zebra crossing, cars and buses _ wait and let them go first.AmustBmayCcanDneed28Seventy dollars for such a dress! You _ be joking!Im serious. Its made of silk from Hangzhou.AmustBneedCwillDcan29Its of great importance to protect the environment. Each of us _ take an active part in it.AcanBmayCwouldDshould30Look at the floor, Tom! _ you watch TV while having a meal?AShouldBCouldCMustDMay31According to the rule, used batteries _ be dropped in the red bin for harmful wastes.AmayBwouldCshouldDmight32Could you tell me how to renew the library books?With pleasure. You _ come to our desk every time. Its easier to renew them online.AcantBmustntCneedntDshouldnt33For the safety of the passengers, objects like guns _ be carried on board.Amay notBneedntCmight notDmustnt34The article says that a persons animal sign decides his personality.You _ read it for fun, but dont believe in that.AcanBmustCshouldntDneednt35 What do you think of the show yesterday? Some of them were really good but others _ be better.AwillBmustCneedDcan36In China, many students have to stay up late to do their homework.No worries. The government has realized the problem. Im sure there _ be good news soon.AcanBshouldCmustDneed37Whos the man over there? Is that Mr. Black? It _ be him. Mr. Black is much taller than that man.AmayBmustCcantDmustnt38I dont care what people think.Well, you _ . Some opinions are worth weighing.AshouldBmightCcouldDwould39You _ drive after drinking alcohol(酒). Its against the law.AmustntBneedntCcouldntDwouldnt40Must we stop the Japanese government discharging nuclear waste water (排放核污水) into the Pacific Ocean?_. Because everyone should protect our earth and it is bad _ us to eat the polluted seafood and drink the waste water.AYes, we can; ofBNo, we mustnt; ofCYes, we must; forDNo, we neednt; for【参考答案】一、选择题1C解析：C【详解】句意：小心！火有时候会很危险。好的。我马上把火扑灭。考查情态动词辨析。mustnt禁止；should应当；can会、能；neednt不需要。根据前句“Be careful!”可推知，应是说火有时候会很危险，故情态动词应用can。故选C。2B解析：B【详解】句意:我的自行车昨天坏了，所以我不得不步行回家。考查情态动词。might可能；had to必须，不得不；must必须，一定；could能，会，是can的过去式。must强调说话者的主观看法，have to强调客观需要。根据 “My bike was broken yesterday我的自行车昨天坏了”可知，此处表达“所以我不得不步行回家”，用情态动词的过去式had to表示“不得不”。故选B。3D解析：D【详解】句意：我们一定要今天完成吗？是的，你们必须。今天是最后一天。考查情态动词辨析。would将；may也许；can可能，可以；must必须。根据“Today is the last day.”可知，必须今天完成，故选D。4D解析：D【详解】句意：对不起，这里不允许抽烟。如果你一定要抽的话，你会被按规定罚款的。考查情态动词辨析。can能、会；will将要；may可以；must必须、一定。根据主句“you will be fined according to the rules.”可知，应是如果你一定要抽的话。故选D。5C解析：C【详解】句意：我可以加入你的计划吗？对不起，你不能。你太年轻了。考查情态动词。shouldnt不应该；mustnt禁止；cant不能；neednt没必要；根据“You are too young.”可知，你太年轻了，由此说明你不能参加对方的计划。故选C。6D解析：D【详解】句意：你不应该要求别人像你一样来处理问题。每个人都有自己的方法。考查情态动词。mustnt不许，表禁止；neednt 不必；may not 也许不；shouldnt不应该；根据“ Everyone has his own way”每个人都有自己的方法；可知，此处指“不应该如此要求别人”。故选D。7B解析：B【详解】句意：今天我必须去上学，是吗？不，你不必。你可以等好点再去。考查情态动词。mustnt禁止，不要；neednt不必，没有必要。must是情态动词，意为“必须”，反意疑问句应用need构成，答语中也应用need。故选B。8C解析：C【详解】句意：你为什么不早点告诉我？ 我为什么应该告诉你？我想要保守我自己的秘密。 考查情态动词。can能够；may可以；should应该；shall将，会。根据“Why didnt you tell it to me earlier?”及“I want to have my own secret.”可知，此处应该是“我为什么应该告诉你？”故选C。9A解析：A【详解】句意：谁在隔壁唱歌？是王小姐吗？不可能是她。她正在开董事局会议。考查情态动词表推测。cant不可能是，表示有把握的否定推测；shouldnt不应该；mustnt禁止；neednt没必要。根据“Shes having the board meeting.”，可以判断出不可能是王小姐在唱歌，故选A。10C解析：C【详解】句意：有人敲门。一定是我妈妈。她总是这个时候回家。考查情态动词辨析。may也许；may not也许不；must一定；cant不能。根据“She always comes back home at this time.”可知，此处表示非常肯定的推测，故选C。11C解析：C【详解】句意：你应该小心你的相机。它很贵！考查情态动词辨析。can可以；will将；should应该；may可能。根据“It costs!”可知相机很贵，应该小心。故选C。12C解析：C【详解】句意：爸爸，我们一定要等绿灯吗？是的，恐怕我们必须这样做。这是交通规则。考查情态动词。may可能；can可以；have to必须；need需要；根据“must we wait until the light becomes green”及“Thats the traffic rule”可知，每个人都必须要遵守交通规则，应用have to，故选C。13B解析：B【详解】句意：这周五郎朗会去艺术中心表演吗？是的。一定是他。他在这里已经三天了。考查情态动词。might也许；must必须；mustnt禁止；may也许。根据“Yes.”和“He has been here for three days.”可知，此处表示非常肯定的推测，故选B。14A解析：A【详解】句意：你必须重新写报告，因为根本不允许有拼写错误。考查情态动词。must必须；can能够；may可以；could能够。根据“spelling mistakes are not allowed at all”可知，拼写错误是不被允许的，所以报告必须重写。故选A。15B解析：B【详解】句意：我听不清你说什么。你能重复一下吗？考查情态动词。mustnt禁止；cant不能；neednt不需要；shouldnt不应该。根据“Would you please repeat it?”可知，我不能听清，所以需要对方重复，故选B。16A解析：A【详解】句意：很多在线资源既可以供学校的老师使用，也可以供家长在家使用。考查情态动词词义辨析。can能，可以；should应该；need需要；must必须。根据“be used either by teachers at school or parents at home.”可知，指很多在线资源既可以供学校的老师使用，也可以供家长在家使用。故空格处的意思是可以，能够。故选A。17A解析：A【详解】句意：神奇的是，这支笔能把声音转换成文字，而且很少出错。考查情态动词词义辨析。can能够，可以；must必须；may可以，可能；need需要。此句是说这支笔能够把声音转换成文字，表示一种能力，应用can，故选A。18C解析：C【详解】句意：如果你给你妈妈买一台扫地机器人，她就不必每天扫地了。考查情态动词辨析。cant不能；mustnt禁止；neednt不需要；shouldnt不应该。根据“If you buy your mum an iRobot floor cleaner”可知，买了扫地机器人，就不需要人工每天扫地了，故选C。19A解析：A【详解】句意：你今晚会早点回来吗？ 是的，但我可能会晚一点。我们的老板有时有额外的工作要做。A. may也许；B. must必须；C. need需要；D. will将，将会。由下文的句子Our boss sometimes has extra work for us. 我们的老板有时有额外的工作要做。可知，今晚我可能会晚一点回来。因此用may be表示推测；选项B/C/D不符合语境。故选A。20D解析：D【详解】句意：高中入学考试快到了! 是的，我们老师告诉我们考试时再怎么仔细都不为过。考查情态动词。mustnt禁止；shouldnt不应该；neednt不必；cant不能。“cant be too +adj.”意为“再怎么样也不为过”，结合语境，故选D。21A解析：A【详解】句意：布莱克先生现在不可能在家。他上周五去国外度假了。考查情态动词词义辨析。cant不可能，不会；mustnt禁止；neednt不需要；shouldnt不应该。根据“He went abroad on vacation last Friday.”可知，布莱克先生上周五出国了，所以猜测他现在不可能在家。故选A。22C解析：C【详解】句意：那是周先生吗？肯定不是他。他去了北京。考查情态动词。can能，能够；may可能；can t不可能，表示推测；shouldnt不应该；根据“He has gone to Beijing.”可知，那个人不可能是周先生，故选C。23A解析：A【详解】句意：大部分年轻人喜欢网上购物，因为他们不需要花费大量时间从一家店到另一家店。考查情态动词的用法。neednt不必；cant不能；mustnt禁止；shouldnt不应该。根据句意可知，年轻人喜欢网上购物，是因为他们不必把时间花在来回逛商店上。故选A。24A解析：A【详解】句意：妈妈，为什么我必须一天洗那么多次手？为了你的健康，你越小心越好。考查情态动词。cant不可能；mustnt禁止；may not可能不；neednt不必。cant be+too+形容词，表示越越好，故选A。25C解析：C【详解】句意：我认为所有的学生都喜欢周末，因为对他们来说，他们不必在周六或周日早起。考查情态动词。mustnt禁止；dont need不需要；neednt不必；cant不能。根据“to them, they . get up early on Saturdays or Sundays”结合常识可知周六或周日学生么不必早起。根据“get”可知，此处是neednt do sth短语，故选C。26D解析：D【详解】句意：那边的男孩是汤姆吗？他经常穿那样的夹克。那不可能是他。他今天没来上学。考查情态动词。neednt不必；shouldnt不应该；mustnt禁止；cant不可能。根据“He is absent from school today”可知，推测那个男孩一定不是汤姆，否定推测用cant，故选D。27A解析：A【详解】句意：当人们在斑马线前等候时，汽车和公共汽车必须等一等，让他们先走。考查情态动词。must必须；may可能；can能够；need需要。根据“wait and let them go first”可知此处是讲礼让行人的交通规则，应是必须等行人先过。故选A。28A解析：A【详解】句意：这样一件衣服要70美元！你一定是在开玩笑！我是认真的。这是杭州的丝绸做的。考查情态动词辨析。must一定；need必须；will将；can能够。根据“Seventy dollars for such a dress”可知，70美元竟然买这样一件衣服，认为对方一定是在开玩笑，故选A。29D解析：D【详解】句意：保护环境是非常重要的。我们每个人都应该积极参与其中。考查情态动词。can能；may也许；would就会；should应该；根据“Its of great importance to protect the environment”保护环境非常重要；可知此处指“大家都应该积极参与”，表责任、义务；故选D。30C解析：C【详解】句意：汤姆，看看地板！你吃饭时必须看电视吗？考查情态动词辨析。Should应该；Could能，会；Must必须；May可以。根据“Look at the floor, Tom!”可知，此处是抱怨必须吃饭看电视，用情态动词must。故选C。31C解析：C【详解】句意：根据规定，使用过的电池应丢弃在红色的有害废物箱中。考查情态动词辨析。may也许；would将会；should应该；might可能。根据“used batteriesbe dropped in the red bin for harmful wastes”可知，使用过的电池应丢弃在红色的有害废物箱中，故选C。32C解析：C【详解】句意：你能告诉我怎样续借图书馆的书吗？非常乐意。你不必每次都来我们前台。在网上续借更容易。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 easier to renew them online”可知，在网上就能完成续借的事情，不必来前台办理，故选C。33D解析：D【详解】句意：为了乘客的安全，严禁携带枪支等物品登机。考查动词辨析。may not也许不；neednt不需要；might not也许不；mustnt禁止。根据“For the safety of the passengers, objects like gunsbe carried on board.”可知，禁止携带枪支，故选D。34A解析：A【详解】句意：这篇文章说，一个人的属相决定他的性格。你可以为了好玩而读它，但不要相信它。考查情态动词辨析。can可以；must必须；shouldnt不应该；neednt不必。根据“but dont believe in that”可知，不要相信这样的话，只是可以作为娱乐看一看就行了，故选A。35D解析：D【详解】句意：你觉得昨天的演出怎么样？有一些真的很好，但其他的可以更好。考查情态动词。will将要；must必须；need需要；can可以。根据“were”可知，时态是一般过去时，故A选项排除；本句指一些节目在原有水平基础上可以做得更好，表有能力做某事，用can。故选D。36C解析：C【详解】句意：在中国，许多学生不得不熬夜做作业。别担心。政府已经意识到这个问题。我相信很快就会有好消息。考查情态动词辨析。can能、会；should应当；must必须、一定；need需要。根据空前“Im sure”可推知，应是“there must be，一定有”，表示肯定的推测。故选C。37C解析：C【详解】句意：那边那个人是谁？ 是布莱克先生吗？ 不可能是他。布莱克先生比那个人高得多。 考查情态动词。may可能；must一定；cant不可能；musnt禁止。根据“Mr. Black is much taller than that man.”可知，这个人不可能是布莱克先生。故选C。38A解析：A【详解】句意：我不在乎别人怎么想。嗯，你应该在乎。有些意见值得权衡。考查情态动词。should应该；might可能；could能；would将会，根据前面的“I dont care what people think”和后面的“Some opinions are worth weighing”可知，应该是“你应该在乎”，故选A。39A解析：A【详解】句意：你不准酒后开车。这是违法的。考查情态动词。mustnt不准；neednt不需要；couldnt不可能；wouldnt将不会。根据下文“Its against the law”可知，因为会违反法律，所以酒后驾车这个行为是禁止和不允许的，故选A。40C解析：C【详解】句意：我们必须阻止日本政府向太平洋排放核污水吗？是的，我们必须。因为每个人都应该保护我们的地球，吃污染的海鲜和喝废水对我们是不好的。考查一般疑问句及介词用法。根据“Must we stop the Japanese government discharging nuclear waste water into the Pacific Ocean”可知，对于日本政府向太平洋排放核废料这个行为，我们是必须要阻止的，用must表示“必须”。第二个空是固定搭配：be bad for“对有害”，故选C。