资源简介 / 让学习更有效 新课备课备考 | 英语学科/ 让学习更有效 新课备课备考 | 英语学科2025年鲁教版(五四学制)九年级全册英语精讲精练Unit 2 Teenagers should be allowed to choose their own clothes核心语法:被动语态中的情态动词一、核心概念情态动词被动语态用于表达"某事应该/可能/必须被做"的含义,其结构为:情态动词 + be + 及物动词的过去分词(V-ed)二、基本结构情态动词 主动语态 被动语态 例句(被动)can can do can be done The rules can be changed.may may do may be done The project may be delayed.must must do must be done The work must be finished.should should do should be done The room should be cleaned.need need to do need to be done The car needs to be repaired.have to have to do have to be done The form has to be submitted.三、使用场景规则与义务These documents must be signed before Friday.(文件必须在周五前签署)建议与劝告The problem should be discussed at the meeting.(问题应在会议上讨论)可能性The package might be delivered today.(包裹可能今天送达)必要性The plants need to be watered daily.(植物需要每天浇水)四、句式转换三步法找宾语变主语You must complete the form. → The form must be completed.情态动词后加beshould complete → should be completed动词变过去分词complete → completed注意:by+执行者通常省略,除非需要强调。五、特殊形式情态动词 + have been done(表示对过去的推测)The letter may have been lost in the mail.(信件可能在邮寄过程中丢失了)否定形式The door can't be opened without a key.(没有钥匙门无法打开)疑问形式Should the report be rewritten (报告需要重写吗?)六、易错点提醒漏掉be动词 The task must completed. → The task must be completed.误用动词原形 The window should close. → The window should be closed.need的两种被动形式The floor needs mopping.(主动形式表被动)The floor needs to be mopped.(被动语态)七、记忆口诀"情态被动很简单,情动加be加过分;must/should/can/may,后接be done记心间;否定not加情动后,疑问情动提句前!"1.—How often do I need to feed the dog —It ________ food every day, or it will be hungry.A.must give B.must be giveC.must gave D.must be given2.My mother told me that my homework must ________ on time.A.finish B.be finish C.be finished D.finished3.—It's difficult to get to the other side of the river.—I think a bridge ________ over the river.A.should be built B.should buildC.will build D.has built4.—The horse-face skirt is popular. It puts together modernity and tradition naturally.—Yeah! It shows that traditional beauty should ________ by Chinese people today.A.value B.be valued C.valued5.The lights must ________ before you leave the classroom.A.turn on B.turn offC.be turned on D.be turned off6.Some of the stars ________ because they are too far away.A.can’t see B.can’t be seen C.mustn’t see D.mustn’t be seen7.Something must ________ to protect the sharks because many of them are endangered now.A.do B.done C.be done8.No matter how many difficulties we have, I believe all the problems can ________ in the end.A.solve B.be solved C.be solving D.be to solve9.Thanks to the Internet, different kinds of information ______ in a minute.A.has learnt B.has been learnt C.can learn D.can be learned10.In my opinion, every child should ________ to follow the traffic rules by their parents.A.educate B.be educatingC.educated D.be educated11.— Must we clean the classroom now — No, you needn't. It after school.A.may clean B.must clean C.need be cleaned D.can be cleaned12.Your bike ________ at Jim's.A.can mend B.can mended C.can be mend D.can be mended13.—The traffic is too heavy. We have to drive slowly.—I think more new roads ________ in our city.A.have built B.build C.should build D.should be built14.Mr. Chen has a loud voice. His voice ________ clearly even in that big classroom.A.can hear B.can be heardC.heard D.was heard15.There are a lot of places which ______ by visitors here. They are the Great Wall, the Summer Palace, the Forbidden City and so on.A.must not miss B.shouldn’t miss C.shouldn’t be missed D.can’t miss16.I hope the pain in my mother’s knee can by the doctor.A.cure B.get betterC.be cured D.got better17.The baby should ________ at home.A.be taken care B.be taken care of C.take care D.take care of18.The work ________ in three hours . Let’s hurry.A.must finish B.will finish C.finished D.must be finished19.The moon and stars ________ in the sky on clear nights in summer.A.can see B.can’t see C.can be seen D.can’t be seen20.Every minute should ________ to good use. Only in this way can we save more time to practice.A.put B.be put C.putting21.–Do you know where your father is -I think he ____ on the computer.A.must chat B.must be chatted C.could chat D.could be chatting22.Because of the support from all over the country,beautiful new buildings here and there inthe earthquake-hit areas in Sichuan.A.can see B.can be seen C.can’t be seen23.Stone can be ______ building houses.A.used for B.used toC.use to D.used by24. --I heard a bag of La Tiao ________ at the price of ¥10 in America. But I am not sure.-- I can’t believe it. Let’s check it online.A.must sell B.might be soldC.must be sold D.can’t be sold25.No matter how many difficulties we have, I believe all the problems can ________ in the end.A.solve B.be solved C.answer D.be answered26.We shouldn’t ________ aliens.A.be controlled by B.is controlled by C.are controlled by D.be control by27.As everyone knows,rubbish everywhere.A.need be thrown B.mustn’t be thrown C.can’t throw28.—How nice the building is! What is it used for —It _________ as a hotel. But I’m not sure.A.must be used B.is used C.may be used D.will use29.---I want to borrow the book, but I don’t know how long it may .--- For two weeks.A.keep B.be borrow C.borrow D.be kept30.Remember that the lights in the room ________ before you leave.A.must turn off B.must be turned offC.turned off D.were turned off31.Children under 12 years old _______ ride sharing bikes. It’s too dangerous.A.shouldn’t allow to B.shouldn’t allow C.shouldn’t be allowed to D.shouldn’t be allowed32.Older people ____ well.A.looks after B.must be looked afterC.must look after D.looked after33.I think your lost pen ________ on the sofa in your home.A.may be left B.should not be leftC.may leave D.should not leave34.The dictionary _____ taken out of the library. You can use it at home or in the classroom.A.can't be B.can beC.wasn't D.was35.People who drank wine ____________ to drive.A.don’t allow B.isn’t allowedC.mustn’t allow D.mustn’t be allowed36.Your bike can’t ______ there.A.be put B.is put C.be putted D.putted37.—Mum, can I drive my father’s car to the cinema —No way! You should not ______ to drive, because you don’t have a driver’s license.A.allow B.allowed C.be allowed D.are allowed38.Old people must be looked after well and ________ politely.A.speak to B.spoken C.speak D.spoken to39.—Do you think that teenagers should ________ to do part-time jobs after school —No, I don’t think so.A.encourage B.be encouraging C.are encouraged D.be encouraged40.Food safety is very important. More rules should ______ in China.A.make B.be making C.be made D.to make41.Cigarettes must ________ before you go into a room.A.put out B.be put out C.put up D.be put up42.—The number of old people in China is increasing rapidly.—I believe they ________ better care of in the future with the development of our country.A.can take B.are taking C.are taken D.can be taken43.—Tom is always careless with his schoolwork. Could you help him —No problem! I think he ________ to think twice before starting.A.should tell B.should be told C.can tell D.can be telling44.Disabled people should ________ and deserve the same respect.A.not laugh at B.laugh at C.not be laughed at D.be laughed at45.Computers are very useful. They can ________ sending e-mails.A.be used to B.be used with C.be used for D.be used as46.—Maggie, it seems _______ you like to work with animals.—Yeah, I think animals should _______ as our friends.A.what; regard B.that; regardC.what; be regarded D.that; be regarded47.—Do you know what the clothes on the show are made of —Waste paper. You see, waste things can ________ to life.A.bring back B.be brought back C.take away D.be taken away48.— When should we hand in my paper — Your paper must ________ as soon as the bell ________.A.be handed in; rings B.be handed in; will ringC.hand in; rings D.hand in; will ring49.The teenagers ________ to choose their own clothes.A.allow B.allowedC.are allowing D.should be allowed50.-The traffic is too busy. We have to drive slowly.-I think more new roads ____________ in our city.A.should be built B.should build C.have built D.build/ 让学习更有效 新课备课备考 | 英语学科/ 让学习更有效 新课备课备考 | 英语学科21世纪教育网(www.21cnjy.com)21世纪教育网(www.21cnjy.com)参考答案及试题解析1.D【解析】试题分析:句意:—我需要多久喂一次狗?—必须每天给它食物,否则它会饿的。根据句意及题干分析此空应用被动语态,其基本结构是be+动词的过去分词,此题考查的是带有情态动词的被动语态,所以此题应选D。【考点定位】考查被动语态的用法。2.C【解析】句意:我妈妈告诉我我的作业必须准时完成。考查被动语态。主语my homework是finish的承受者,故用被动语态(be done)。故选C。3.A【解析】试题分析:句意:--到河的对岸是困难的。--我认为一座桥应该被建立在河上。分析:考查被动语态的用法,联系语境,表示应该被建立,因此运用情态动词should的被动语态。构成:should be done(动词过去分词)。故选A考点:考查被动语态的用法。4.B【解析】句意:——马面裙很流行。它将现代与传统自然地结合在一起。——是啊。这表明传统美应该受到今天中国人的重视。考查被动语态。分析句子结构可知,空处所在句的主语“traditional beauty”与空处为逻辑上的动宾关系,用被动语态,B项符合。故选B。5.D【解析】句意:离开教室前必须把灯关掉。考查动词短语以及被动语态。turn on打开;turn off关闭。根据句意可知这里指灯被关掉,用被动语态be+过去分词。因为空前前有情态动词must,因此这里的be用动词原形。故选D。6.B【解析】句意:有些星星看不见,因为它们太远了。考查含情态动词的被动语态。can’t不能;mustn’t禁止;分析句子结构可知,空处所在句的主语与谓语之间为逻辑上的动宾关系,此处应用被动语态;根据句意可知,此处指不能被看见。故选B。7.C【解析】句意:必须采取措施保护鲨鱼,因为现在很多鲨鱼都濒临灭绝。考查情态动词的被动语态。根据题干“Something must ... to protect the sharks”可知,something和do之间是动宾关系,故此处使用含情态动词的被动语态,其构成为:情态动词+be+done。故选C。8.B【解析】句意:不管我们有多少困难,我相信所有的问题最终都能解决。考查被动语态。分析句子,问题能够“被解决”,且根据“can”可知,应为含有情态动词can的被动语态,构成为:can + be +动词过去分词。故选B。9.D【解析】句意:多亏了互联网,不同种类的信息可以在一分钟内学到。考查动词时态。根据“different kinds of information”可知,information与learn之间存在被动关系,指的是“不同种类的信息一分钟内能被学到”,排除选项A、C;该句描述客观事实,为一般现在时,排除B。故选D。10.D【解析】句意:在我看来,父母应该教育每个孩子遵守交通规则。考查被动语态。根据“by their parents”并分析句子结构可知,句子主语与谓语为逻辑上的动宾关系,用被动语态。故选D。11.D【解析】句意:——现在我们必须打扫教室吗?——不,你不必了,在放学时候,它可以被打扫。A. may clean可以打扫;B. must clean必须打扫; C. need be cleaned需要被打扫;D. can be cleaned能被打扫。根据主语是it指的是教室,用被动语态,其结构是情态动词+be done的形式,这里是说能被打扫。根据题意,故选D。12.D【解析】句意:你的自行车能在吉姆那里修理。根据Your bike和mend之间是被动关系,所以用被动语态,含有情态动词的被动语态结构是:情态动词+be+过去分词;故选D13.D【解析】句意:——交通太拥挤了。我们必须开慢点。——我认为我们城市应该修建更多的新道路。考查含有情态动词的被动语态。根据“I think more new roads…in our city.”可知此处是说我们城市应该修建更多的新道路,should应该;且道路被修建,此处表被动,结构为“be done”;情态动词后加动词原形。故选D。14.B【解析】句意:陈先生声音很大。即使在那间大教室里也能清楚地听到他的声音。考查动词的时态和语态。can hear可以听到(一般现在时);can be heard可以被听到(一般现在时);heard听到(一般过去时);was heard被听到(一般过去时)。根据“Mr. Chen has a loud voice.”可知此处描述客观情况,使用一般现在时即可,句子的主语是His voice,和动词hear是动宾关系,因此需使用被动结构be done。故选B。15.C【解析】句意:这里有很多地方不容错过。他们是长城、颐和园、紫禁城等等。考查被动语态。本题which从句做places的定语,是从句动词miss的受动者,需用被动语态。A、B、D都不是被动语态,可排除。shouldn’t不应该,表建议,故选C。16.C【解析】句意:我希望我母亲膝盖的疼痛能被医生治愈。考查被动语态,cure治愈,get better变得更好。根据by the doctor可知此处表示被医生治愈,故用被动语态,故为be cured。故选C。17.B【解析】句意:婴儿应该在家中得到照顾。考查被动语态。主语the baby和谓语动词take care of构成动宾关系,应用被动语态。take care注意、当心,为不及物动词短语,不能用于被动语态,故选 B。18.D【解析】句意:这项工作必须在三小时内完成,让我们快点。主语The work与动词finish之间是被动的关系,因此句子要用被动语态来表达,其构成为“助动词be+及物动词的过去分词”,只有D答案符合题意,为情态动词的被动语态,故答案为D。点睛:被动语态的构成是:be + 过去分词 + (by+动作执行者)。一般地讲,被动语态可用于英语的各种时态。为了能准确地运用被动语态,重点是要掌握be动词的各种时态变化。各种时态的被动语态举例如下:1、一般现在时的被动语态:am / is / are + 动词的过去分词2、一般过去式的被动语态:was / were + 动词的过去分词3、现在进行时的被动语态:am / is / are + being + 动词的过去分词4、过去进行时的被动语态:was / were + being + 动词的过去分词5、一般将来时的被动语态:(A) will / shall + be + 动词的过去分词 (B) am / is / are + going to be +动词的过去分词.6、过去将来时的被动语态:(1).would / should + be + 动词的过去分词 (2).was / were +going to be + 动词的过去分词7、现在完成时的被动语态:have / has + been + 动词的过去分词8、过去完成时的被动语态:had + been + 动词的过去分词9、含情态动词的被动式:can / may / must + be + done19.C【解析】句意:在夏天晴朗的夜晚,天空中可以看到月亮和星星。考查含情态动词的被动语态。根据“The moon and stars...in the sky on clear nights in summer.”可知,本句主语是动作的承受者,结合常识可知,在夏天晴朗的夜晚,天空中可以看到月亮和星星,此处表示肯定含义。故选C。20.B【解析】句意:每一分钟都应该好好利用。只有这样,我们才能节省更多的时间来练习。考查被动语态。分析题干可知,主语“Every minute”可知动词put“放入”之间是被动关系,结合空前的“should”可知,此处要用含情态动词的被动语态,结构为情态动词+be done。故选B。21.D【解析】句意:-你知道你爸爸在哪里吗?-我想他可能在电脑上聊天。must chat一定聊天;must be chatted一定被聊天;could chat可能聊天;could be chatting可能正在聊天。根据对话的情景可知,这里问的是一个正在发生的动词,故答语中在表示猜测时,应用进行时态,故选D。22.B【解析】句意:因为来自全国各地的支持,美丽的新建筑在四川受地震袭击的地区到处都可以被看到。can see可以看到;can be seen可以被看到;can't be seen不能被看到。根据句意可知,主语beautiful new buildings和动词see构成被动关系,句中应使用被动语态,并且根据句中Because of the support from all over the country可知,这里应是肯定的意思,故应选B。23.A【解析】句意:石头可以用来建造房屋。be后面不能跟动词原形,首先排除C;be used for doing sth.被用来做某事;be used to doing sth.习惯于做某事;be used by意为“被…使用”,介词by后面常连接动作的执行者。结合句意可知,答案为A。24.B【解析】试题分析:根据题意可知用情态动词表示推测,是没把握的肯定推测故用might,本题考查含情态动词的被动语态,情态动词+be done的结构;句意:我听说在美国一包拉条可能以价格10元被卖了,但是我不确定。---我简直不相信它。让我们在网上核查一下。结合句意,故选B考点:考查含情态动词的被动语态。25.B【解析】句意为:无论我们将遇到多少困难,我相信最终所有的问题都会得到解决。考查被动语态和动词辨析。solve解决;answer回答;根据句意可知,此处指的是问题会解决,句子主语problems与动词solve之间存在逻辑上的动宾关系,应用被动语态,此处是情态动词的被动,结构是“情态动词+be+过去分词”,故选B。26.A【解析】句意:我们不应该被外星人控制。考查被动语态。根据“shouldn’t”可知,其后跟动词原形,因此排除BC选项;被动语态的形式为“be done by”,因此“control”应用其过去分词形式“controlled”。故选A。27.B【解析】句意:众所周知,垃圾禁止被到处乱扔。need be thrown需要被扔;mustn't be thrown禁止被扔;can't throw不能扔。根据句意可知,句子的主语rubbish和动词throw构成被动关系,这句话应使用被动语态,先排除C,并且这里应表示否定的意思,不能乱扔垃圾,故应选B。28.C【解析】句意:——这座建筑真漂亮!它是用来做什么的?——它可能是用作宾馆的,但是我不确定。考查含有情态动词的被动语态。must一定;may可能;will将。此处it指代“the building”,和谓语use之间是被动关系,用被动语态,排除D;根据“But I’m not sure”可知是可能用来作宾馆,情态动词用may。故选C。29.D【解析】句意:—我想要借那本书,但是我不知道可以保留它多长时间。—两周。本题考查动词和语态。keep保留,是延续性动词;borrow借,是短暂性动词;be kept是延续性动词,是被动形式。根据how long可知,与时间段连用,用延续性动词keep,主语it与谓语keep之间是被动关系,因此用被动语态be kept。故选D。30.B【解析】句意:记住在你离开之前一定要把房间里的灯关掉。考查情态动词的被动语态。turn off“关掉”,动词短语;根据“灯”是“被关掉”可知,此处要用被动语态,因此排除选项A、C,根据“before you leave”可知,此处不能用一般过去时的被动语态,因此排除D,应用含情态动词的被动语态,构成为:情态动词+be+过去分词。故选B。31.C【解析】句意:12岁以下的儿童不应该被允许骑共享单车。太危险了。考查含情态动词的被动语态。主语Children是动作allow的承受者,所以用被动语态,即含情态动词的被动语态“should be done”;allow sb. to do sth.“允许某人做某事”。故选C。32.B【解析】句意:老年人必须得到很好的照顾。本题考查含情态动词的被动语态;含情态动词的被动语态的结构是"情态动词+ be + done";题干中老人是“被照料”,A、C和D都是主动结构,故答案是B。33.A【解析】句意:我想你丢失的钢笔可能被留在你家的沙发上了。考查含情态动词的被动语态。may可能;should应该。根据“I think your lost pen ... on the sofa in your home.”可知,用情态动词may表示推测,结合从句主语“your lost pen”可知,此处是指钢笔被留在沙发上了,所以用被动语态“be done”。故选A。34.B【解析】句意“字典可以带出图书馆,你可以在家或教室使用它”。根据“你能在家或教室使用”可知,字典“能被”带出图书馆,因此先排除选项A和C;B为情态动词的被动语态,D为一般过去时的被动语态。根据题干后一句You can use it ... 可知,用情态动词的被动语态。故选B。35.D【解析】试题分析:句意:禁止喝酒的人开车。be allowed to do sth允许做某事; mustn’t禁止,不允许。所以选D。考点:考查含情态动词的被动语态。36.A【解析】句意:你的自行车不能放在那里。考查被动语态。主语bike是动词put的受动者,需用被动语态,即be+过去分词结构,可排除D项。情态动词后接原形动词,put过去分词是不规则变化用原形动词,根据句意结构,可知选A。37.C【解析】句意:——妈妈,我可以开爸爸的车去电影院吗?——不行!你不应该被允许开车,因为你没有驾照。考查被动语态。根据“You should not…to drive”可知表示不应该被允许开车,因此需要使用被动语态来表达“被允许”,结构为should be done。故选C。38.D【解析】句意:老人们必须被妥善照顾和礼貌交谈。考查被动语态。根据“Old people must be looked after well”可知,and后面也用被动语态结构,表示“被礼貌地交谈”,所以用spoken to,注意to不能省略。故选D。39.D【解析】句意:——你认为青少年应该被鼓励放学后去做兼职吗?——不,我不这么认为。考查情态动词被动语态。由“teenagers should … to do part-time jobs after school”可知,主语teenagers与谓语encourage之间存在被动关系,应用被动语态,情态动词的被动语态结构为:情态动词+be+动词的过去分词。故选D。40.C【解析】句意:食品安全非常重要。在中国更多的规则应该被制定。考查含有情态动词的被动语态。make制定,是一个动词。根据句意可知,该句主语“More rules”与动词构成被动关系,应用被动语态;空前“should”是情态动词,其被动结构是:should be+过去分词,故选C。41.B【解析】句意:你进房间前必须把烟熄掉。考查动词辨析和含有情态动词的被动语态。put out扑灭,熄灭;put up举起,张贴,搭建。根据“Cigarettes must...”可知,是熄灭烟,主语是动作的承受者,用含有情态动词的被动语态,故选B。42.D【解析】句意:——中国老年人的数量正在迅速增加。——我相信将来随着国家的发展,他们会得到更好的照顾。考查含情态动词被动语态。根据上文“The number of old people in China is increasing rapidly.”可知,下文中They指代的是老年人,老人们会得到更好的照顾,此处是含情态动词被动语态,其结构是情态动词+be+done的形式。短语take care of...“照看,照顾”,take的过去分词是taken。故选D。43.B【解析】句意:——汤姆总是对他的功课粗心大意。你能帮助他吗?——没问题!我认为应该让他三思而后行。考查情态动词的被动语态。根据“I think he…to think twice before starting.”可知,主语he与谓语动词之间是被动关系,用情态动词的被动语态,谓语动词构成是:情态动词+be done。故选B。44.C【解析】句意:残疾人不应该被嘲笑,应该得到同样的尊重。考查含情态动词的被动语态。根据“Disabled people should … and deserve the same respect.”可知,此处应指残疾人不应该被嘲笑,因此应用情态动词被动语态的否定,构成为情态动词+not be done。故选C。45.C【解析】句意:电脑非常有用,它们能被用来发送电子邮件。考查动词短语。根据“sending e-mails”可知,表示的是电脑的用途,“被用作来做某事”可用be used to do sth.或be used for doing sth.表示,而be used to doing译为“习惯于做某事”。故选C。46.D【解析】句意:——麦琪,你似乎喜欢与动物打交道。——是的,我认为动物应当被视为我们的朋友。考查固定句型及被动语态。It seems that+从句:好像……,似乎……,是一个固定句型。短语be regarded as被看作,regard…as…把……视为……;根据句意和语境可知名词animals是动词regard的承受者,可知此句时态是情态动词的被动语态,其构成:情态动词+be+done;故第二个空填be regarded。故选D。47.B【解析】句意:——你知道展出的衣服是用什么制作的吗?——废纸。你看,废物是可以被复活。考查动词短语。bring back带回,恢复;be brought back被带回,被恢复;take away拿走;be taken away被带走;根据“Do you know what the clothes on the show are made of ”和“Waste paper.”可知,废物被重新利用,也就是给了废物新的生命,bring back to life复活,主语是动作的承受者,所以用被动语态。故选B。48.A【解析】句意:—— 我们什么时候交论文?—— 铃声一响,你的论文就必须交上来。考查被动语态和时间状语从句。根据“hand in”和“paper”之间的关系可知,是动宾关系,“paper”作主语,因此此空用被动语态;根据“must”一词可知,情态动词后加动词原形,因此第一空be handed in符合句意;根据“as soon as引导时间状语从句”可知,时间状语从句的时态用一般现在时,主语“the bell”是第三人称单数,因此rings符合句意。故选A。49.D【解析】句意:青少年应该被允许选择他们自己的衣服。The teenagers青少年,与动词allow是被动关系,所以用被动语态,be+过去分词,前面有情态动词should,be用原形,故选D。50.A【解析】句意:——交通太拥挤了。我们得开慢点。——我认为我们的城市应该修建更多的新公路。考查动词语态辨析。new roads(新路)和动词build(建造)是被动关系,需用“be done”被动语态结构,BCD三项都是主动语态,可排除。should应该,表建议;根据句意语境,可知选A。21世纪教育网(www.21cnjy.com)21世纪教育网(www.21cnjy.com) 展开更多...... 收起↑ 资源预览