专题13 句型转换80题（期末重点知识）-2022-2023学年八年级英语下学期期末考点大串讲（牛津译林版）.docx

1、牛津译林版八年级下学期期末考点大串讲(期末重点知识)专题13 句型转换80题一、划线部分提问1The theatre was built seven years ago. (对画线部分提问)_ _ the theatre built?2We can save energy by turning off the lights. （对划线部分提问） _ _ you save energy?3Many childrens lives were changed because of the war.（对画线部分提问）_ _ many childrens lives changed?4People fe

2、el grateful about their work. (对划线部分提问)_ do people _ about their work?5Blindness affects about 37 million people around the world. (对划线部分提问)_ _ _ does blindness affect around the world?6I came here to return the money. （对画线部分提问）_ _ you come here _?7The charity walk is held every month. (对画线部分提问)_ is

3、 the charity walk held?8Jenny has recently visited the UK. （对画线部分提问）_ _ recently visited the UK?9They are going to talk about manners in the UK. （对划线部分提问）_ are they going to _?10They said “nice to meet you” when they met us for the first time. （对划线部分提问）_ did they _ when they met you for the first ti

4、me?11I enjoy rock music because it is exciting. (对画线部分提问)_ do _ enjoy rock music?12Jill is reading a book called Gullivers Travels.(对画线部分提问)_ Jill reading?13Gulliver talked with those small men. （对画线部分提问）_ did Gulliver _ with?14Many small men continued moving across Gullivers body. (对画线部分提问)_ did ma

5、ny small man _ _?15They love travelling very much.(对画线部分提问)_ do they love _ very much?16I use my computer to learn English.(对画线部分提问)_ _ you _ your computer _ _ ?17The Whites have lived in China since three years ago. (对画线部分提问)_ _ have the Whites lived in China?18She has bought some flowers for you.（

6、对画线部分提问）_ _ she bought for me?19We have lived in this area since we moved here in 2010.（对画线部分提问）_ _ _ you _ in this area?20This bridge was built 100 years ago. (对划线部分提问)_ _ this bridge built?21Trees can provide home for animals. (对划线部分提问)_ _ trees provide for animals?22I know much about the charity.

7、 (对画线部分提问)_ do you know about the charity?23I have some pocket money in the bag. (对画线部分提问)_ do you _ in the bag?24Liu Xing was a volunteer for the 2016 Rio Olympic Games. （对画线部分提问）_ _ a volunteer for the 2016 Rio Olympic Games?25The Asian Games take place every four years. （对画线部分提问）_ _ do the Asian

8、Games take place？二、同义句转化26Switzerland is a country. It has many high mountains.（改为同义句）Switzerland is _ _ _ many high mountains.27John is clever to make all kinds of kites. (同义句转换)Its _ _ John to make all kinds of kites.28My cousins father bought him a new bike.（同义句转换）A new bike was _ _ my cousin by

9、his father.29The doctor will operate on the patient. (同义句转换)The doctor will _ _ _ on the patient.30Xinjiang is getting better and better, so we should take pride in our hometown.（同义句转换）Xinjiang is getting better and better, so we should _ _ _ our hometown.31Reading in the sun is bad for your eyes. （

10、改为同义句）_ bad for your eyes _ _ in the sun.32It is very difficult for us to pay attention to every detail.（同义句转换）_ attention to every detail is very difficult for us.33We are here to provide people with help. (同义句转换) We are here to _ people.34Mike needs two more apples. (同义句转换) Mike needs _ apples.35H

11、e is too young to go to school. （同义句转换）He isnt _ _ _ go to school.36My shoes are Size 6, and his shoes are Size 6 too.(同义句转换)My shoes have _ _ his.37The sad story happened two hundred years ago. (同义句转换)The sad story happened _ _ _.38The old woman died two years ago. (同义句转换)The old woman _ _ _ for tw

12、o years.39Jim has studied in Australia for three years. (同义句转换)Jim has studied in Australia _ three years _.40You can realize your travelling dream by taking an online tour. (同义句转换)Take an online tour, _ your travelling dream can _ _.41Playing with fire is dangerous.（同义句转换）_ _ dangerous _ _ with fir

13、e.42It took us about two hours to finish the work yesterday.（同义句转换）We _ about two hours _ the work yesterday.43The Frenchman left five days ago because of his business.（同义句转换）The Frenchman has _ _ for five days because of his business.44Lucy and Lily went to school by bus last week.(同义句转换)Lucy and L

14、ily _ to school last week.45Sometimes we can meet Miss Zhou in the school library.(同义句转换)We can meet Miss Zhou in the school library _.46He is too weak to carry the heavy bag. (同义句转换)He isnt _ carry the heavy bag.47Its time for lunch. (同义句转换)Its time _ lunch.48Greeting each other with a smile is nec

15、essary in our daily life. （同义句转换）_ is necessary _ greet each other with a smile in our daily life.49My grandfather is so old that he cant travel around. (同义句转换)My grandfather is _ _ _ travel around the world.50Jack is too young to dress himself. (同义句转换)Jack is not _ _ _dress himself.51It took the fa

16、rmer the whole morning to grow the vegetables.(同义句转换)The farmer _ _ the morning in _ the vegetables.52Michaels grandfather is too old to drive a car.Michaels grandfather isnt _ _ to drive a car.53The box is so heavy that I cant carry it. （改为同义句）The box is _ heavy _ _ _ carry.54The book is so interes

17、ting that everybody likes to read it.The book is _ _ _ everybody to read.55The Maths problem is too difficult for me to work out.The Maths problem isnt _ _ for me _ work out.56Students mustnt surf the Internet for a long time.(保持句意不变)Students _ _ to surf the Internet for a long time.57Air pollution

18、does harm to our health. （改为同义句）Air pollution _ _ _ our health.三、改写句子58He will hand in his homework tomorrow. (改为被动语态)His homework _ _ _ in by him tomorrow.59Over 200 cars will be produced in this factory in a week. (改为主动语态)This factory _ _ over 200 cars in a week.60My father made me get up early ye

19、sterday.（改为被动语态）I _ made _ get up early by my father yesterday.61They were preparing for the party when I got to Mr Zhangs home. (改为一般疑问句)_ they preparing for the party when _ got to Mr Zhangs home?62I need money to buy stationery. (改为否定句) I _ _ money to buy stationery.63Mike was generous. He shared

20、 his book with me. (合并为一句) It _ generous _ Mike to share his book with me.64You cant push in before others. (改为祈使句)_ _ in before others.65Lets discuss where we will go after our exam. (改为简单句)Lets discuss where _ _ after our exam.66Simon forgets when he will meet his friends.(改为简单句)Simon forgets when

21、 _ _ his friends.67We have to go to school at weekends. (改为否定句)We _ _ go to school at weekends.68You cant miss Broadway when you visit New York. (改为祈使句)_ _ Broadway when you visit New York.69I have ever heard of the film Life of pi.(改为一般疑问句)_ you ever _ of the film Life of Pi?70I havent heard from h

22、er yet. (改为肯定句)I _ _ _ from her.71Daniel received(收到) a letter half an hour ago. (改为否定句)Daniel _ a letter half an hour ago.72The government took action to improve the situation later .(改为一般疑问句) _ the government _ action to improve the situation later?73Pollution has become a serious problem all arou

23、nd the world.（改为一般疑问句）_ pollution _ a serious problem all around the world?74Ill buy a handbag for my mother tomorrow. (改为被动语态)A handbag _ _ _ for my mother by me tomorrow.75This apple will be cut into two halves by Daniel.(改为主动语态)Daniel _ _ this apple into two halves.76She knew what to do before sh

24、e became a nurse. （改为否定句）She _ _ what to do before she became a nurse.77The little boy is so clever that he can work out this difficult maths problem. (改为简单句）The little boy is _ _ to work out this difficult maths problem.78Does cycling cause any air pollution?（改为否定句）Cycling _ _ any air pollution.四、写

25、出答句79Must I start dancing now?(作否定回答)_, _ _.五、完成句子80I have learned English since two years ago.（同义句转换） I have learned English _ _ _.参考答案：1 When was【详解】句意：这个剧院是七年前建立的。划线部分是时间状语，疑问句用when来提问，句首字母要大写。原句是一般过去时的被动语态，疑问句的be动词是was。故填When；was。2 How can【详解】句意：我们可以通过关灯来节省能源。划线部分为方式，故应用特殊疑问词“how”来提问，句首首字母大写；结合原

26、句“We can save energy”可知，这里仍然用情态动词“can”。故填How；can。3 Why were【详解】句意：许多孩子的生活因战争而改变。划线部分“because of the war”是原因状语，疑问句用why“为什么”来提问，结合题干可知，句子应用一般过去时的被动语态，主语是many childrens lives，因此谓语结构是were done。故填Why；were。4 How feel【详解】句意：人们对自己的工作心存感激。划线部分“grateful”为一种感受，对其提问用how，句首首字母大写；“do”为助动词，后接动词原形。故填How；feel。5 How

27、many people【详解】句意：失明影响着全世界约3700万人。划线部分是数量，且此处修饰名词people，疑问词用how many。故填How；many；people。6 What did for【详解】句意：我是来还钱的。根据题干可知，划线部分“to return the money”为了还钱，它表示目的。对目的提问，需用“为了什么”whatfor提问；根据“came”可知，本句的时态是一般过去时，变一般疑问句时，需借助did。故填What；did；for。7How often【详解】句意：慈善步行每月举行一次。划线部分表示频率，用how often提问，故填How often。8 W

28、ho has【详解】句意：Jenny最近参观了英国。划线部分是主语，对主语“Jenny”提问用who；助动词与上文一样用has。故填Who；has。9 What do【详解】句意：他们将谈论英国的礼仪。划线部分是做的事情，此处询问“要做什么”，疑问词用what，后用动词do代替做的事情。故填What；do。10 What say【详解】句意：他们说“很高兴见到你”当他们第一次见到我们的时候。划线部分表示说话的内容，用what代替；助动词“did”后接动词原形，即say。故填What；say。11 Why you【详解】句意：你为什么喜欢摇滚音乐？对because引导的句子提问用why；题干中的

29、主语I要转化为you。故答案为Why you。12 What is【详解】句意：Jill正在读一本叫做格列佛游记的书。划线部分是书的内容，因此用What引导特殊疑问句，be动词提到主语前。故填What；is。13 Who/Whom talk【详解】句意：格列佛和那些小人儿谈话。画线部分“those small men”指人，且在句子中作宾语，可用who或whom来提问，位于句首，首字母要大写，助动词did后接动词原形talk。故填Who/Whom；talk。14 What continue doing【详解】句意：许多小人继续在格列佛的身体上移动。对“moving across Gullive

30、rs body”提问，是对做的事提问，用疑问词what，continue doing sth“继续做某事”，此处是特殊疑问句，前面有助动词did，后面谓语用动词原形，故填What；continue；doing。15 What doing【详解】句意：他们非常喜欢旅行。划线部分是做某事，故此处应询问“喜欢做什么”，疑问词用what，love后加doing。故填What；doing。16 What do use to do【详解】句意：我使用我的电脑学英语。划线部分为动词短语，即“做某事”，疑问句应用what.do“做什么”来提问，句首首字母w需要大写，原句谓语动词use为实义动词原形，所以助动词

31、do接在特殊疑问词后面，助动词后跟动词原形，use sth. to do sth.“用某物做某事”，故填What；do；use；to；do。17 How long【详解】句意：怀特一家三年前就住在中国了。根据画线部分“since three years ago”自从三年前，可知疑问词应用how long“多久、多长时间”，又因其位于句首，所以首字母要大写。故填How；long。18 What has【详解】句意：她为你买了一些鲜花。画线部分some flowers表示物品，应用what来提问，位于句首，首字母要大写，原句采用现在完成时，主语为she，助动词应用has。故填What；has。19

32、 How long have lived【详解】句意：自2010年搬来这里以来，我们一直住在这个地区。画线部分since we moved here in 2010表示时长，应用how long来提问，位于句首，首字母要大写。句子应用现在完成时，其谓语结构为：have/has+过去分词，主语为you，助动词应用have，后接过去分词lived。故填How；long；have；lived。20 When was【详解】句意：这座桥建于100年前。划线部分是时间，对其提问，应用疑问词when“什么时候”；be动词was提到主语前。故填When；was。21 What can【详解】句意：树木可以为

33、动物提供家园。划线部分是名词，对其提问应用疑问词what“什么”，后跟一般疑问句；情态动词can放于主语前。故填What；can。22How much【详解】句意：我对这个慈善机构了解很多。此处考查对画线部分提问，much“很多”，表示程度，用副词短语how much“多少”提问，首字母开头大写。故填How much。23 What have【详解】句意：我包里有些零花钱。本题是对some pocket money进行提问，因此疑问词要用what，位于句首首字母要大写，一般疑问句是要将be动词，情态动词，助动词提前，这里要将助动词提前，主语是you，助动词为do，后面加have的原形，其它句子

34、成分不变。故填What；have。24 Who was【详解】句意：刘星是2016年里约热内卢奥运会的志愿者。划线部分表示人，对此提问用疑问词who，后跟be动词was，故填Who；was。25 How often【详解】句意：亚运会每四年举行一次。划线部分表示频率，对此提问用疑问词how often表示“多久一次”，故填How；often。26 a country with【详解】句意：瑞士是个国家。它有许多高山。 介词with“拥有，具有”，可以与后面的名词“many high mountains (许多高山)”共同构成介词短语。因此，根据句子结构以及句意分析可知，主语是“Switzerl

35、and (瑞士)”，系动词是“is (是)”，表语“a country (一个国家)”，with与其后的名词短语作为后置定语修饰其前面的名词“country (国家)”。故填a；country；with。27 clever of【详解】句意：约翰很聪明，做了所有种类的风筝。根据所给同义句，可知应用句型it is+adj+of/for sb to do sth，表示“某人做某事怎样”，形容词clever表示“聪明的”，形容的是人，应用介词of。故填clever；of。28 bought for【详解】句意：我表哥的爸爸买了一辆新的自行车给他。结合题干，该同义句“A new bike was.my

36、 cousin by his father.”应用被动语态，其谓语结构是be done，而buy sb. sth.的被动表达为sth. be bought for sb.“为某人买某物”，空前已有be动词was。故填bought；for。29 perform/do an operation【详解】句意：医生将给病人做手术。perform/do an operation表示“动手术”，动词短语；再根据“will”为助动词可知，后接动词原形。故填perform/do；an；operation。30 be proud of【详解】句意：新疆正在变得越来越好，因此我们应该为我们的家乡感到自豪。“为感到

37、自豪”除了可以用动词短语take pride in表示，也可以用形容词短语be proud of来表示，情态动词should后加动词原形。故填be；proud；of。31 Its to read【详解】句意：在阳光下看书对你的眼睛有害。改为同义句，可用固定句型“Its+形容词+for sb to do sth”表示“对某人来说做某事是怎样的”；It作形式主语，动词不定式to read作真正的主语。故填Its；to；read。32Paying【详解】句意：我们很难注意每一个细节。原句是It固定句型，此处也可以转换为动名词作主语的形式。所以空处应填pay的动名词形式paying。故填Paying。

38、33provide help for/offer help to【详解】句意：我们在这里为人们提供帮助。provide sb. with sth.意为“给某人提供某物”，与“provide sth. for sb.”和“offer sth. to sb.”同义，故填provide help for/offer help to。34another two【详解】句意：迈克还需要两个苹果。基数词+more+名词复数=another+基数词+名词复数，所以two more“还需要两个”可以换成another two。故填another two。35 old enough to【详解】句意：他太小了，

39、不能去上学。too.to.“太而不能”，可用not +形容词+enough to do sth来替换。此处是not old enough to“不够大来”。故填old；enough；to。36 the same size as【详解】句意：我的鞋子是6码，他的鞋子也是6码。根据“My shoes are Size 6, and his shoes are Size 6 too.”可知“我”的鞋子和他的一样大，the same.as表示“和一样”，size表示“尺码”，same修饰名词size。故填the；same；size；as。37 two centuries ago【详解】句意：这个悲伤的

40、故事发生在两百年前。此处用来替代原句“two hundred years ago”表示“两百年前”，两百年即两个世纪，所以可以用two centuries ago替代。故填two；centuries；ago。38 has been dead【详解】句意：那位老妇人两年前去世了。同义句可表达为：那位老妇人去世两年了。由时间状语“for two years”可知，句子时态为现在完成时，其结构为have/has+动词的过去分词；die“死”，短暂性动词，不能与表示一段时间的状语连用，可转化为be dead“死的”，表示处于死这种状态，两年了；主语The old woman是第三人称单数，助动词用ha

41、s；be的过去分词是been。故填has；been；dead。39 since ago【详解】句意：吉姆在澳大利亚学习有三年了。根据题干可知，for+时间段(for+three years)可以转化为since+时间段+ago（since+three years ago)，都是现在完成时的时间标志。故填since；ago。40 and come true【详解】句意：你可以通过网上旅游来实现你的旅游梦想。根据“You can realize your travelling dream by taking an online tour.”可知，第一个空处连接的前后两句为顺接关系，用and连接；r

42、ealize“实现”可以表达为come true“实现”，情态动词can后接动词原形。故填and；come；true。41 It is to play【详解】句意：玩火是危险的。表示“做某事是的”可用结构It is adj. to do sth.，动词不定式作主语，it作形式主语。故填It；is；to；play。42 spent finishing【详解】句意：昨天我们花了大约两个小时完成了这项工作。It takes sb some time to do sth“花费时间做某事”，为固定句型，可以和sb spend some time doing sth“某人花费时间做某事”互换。句子是一般过

43、去时，动词用过去式；finish用动名词形式，故填spent；finishing。43 been away【详解】句意：这个法国人因为生意在五天前离开了。此处考查同义句转换，根据转换句的时间状语for five days“五天”，是一段时间，要与延续性动词搭配，非延续性动词leave应转换为延续性动词be away，且空前有助动词has，后接过去分词。故填been；away。44took a bus【详解】句意：露西和莉莉上周乘公共汽车上学。by bus“乘公共汽车”，是介词短语，此处可以和take a bus互换。句子是一般过去时，动词用过去式。故填took a bus。45from tim

44、e to time【详解】句意：有时我们可以在学校图书馆见到周老师。sometimes“有时候”，可以和短语from time to time“有时”互换。故填from time to time。46strong enough to【详解】句意：他太虚弱了，提不动那个包。此题为同义句转换，句子中too.to.意为“太而不能”；由第二句中isnt可知，这里要用weak的反义词strong；可采用结构：形容词+enough to do sth.。故填strong enough to。47to have【详解】句意：该吃午饭了。此题要求改为同义句，用到固定句式：Its time for sth./t

45、o do sth.意为“到了做某事的时间了”。have lunch意为“吃午饭”。故填to have。48 It to【详解】句意：用微笑问候对方在我们的日常生活中是必要的。根据题干可知，设空所在句是固定句型“It is+形容词+动词不定式+其他”，表示“做某事是怎样的”，it是形式主语，动词不定式是真正的主语，故填It；to。49 too old to【详解】句意：我的祖父是如此老以至于他无法四处旅行。此处考查同义句转换，分析句子结构可知，考查结构：too.to do sth.“太而不能做某事”，第一空为too，第二空为形容词old；第三空为to，与travel构成不定式作结果状语。故填to

46、o；old；to。50 old enough to【详解】句意：Jack年龄太小了，还不能自己穿衣服。改为同义句，too young to do sth.“太小而不能做某事”可换成not old enough to do sth.“年龄不够大去做某事”，故填old；enough；to。51 spent all growing【详解】句意：种菜花费了这个农民一早上的时间。此处考查同义句转换，分析句子结构可知，此处转化为spend“花费”的表达形式，sb. spend some time in doing sth.“某人花费一段时间做某事”，且原句为一般过去时，转换句也用一般过去时，第一空用spe

47、nt；第二空为all，all the morning=the whole morning“一整个早上”；第三空用动名词形式growing。故填spent；all；growing。52 young enough【详解】句意：米切尔的祖父太老了不能开车。此处为同义句转化，分析句子结构可知，此处应用副词enough“足够”结构：adj.+enough to do sth.足够去做某事。且空前为否定词isnt，形容词用old“老的”反义词young“年轻的”。故填young；enough。53 too for me to【详解】句意：这个箱子太重了，以致于我搬不动。表示“太而不能做某事”用结构“too

48、 adj./adv. to do sth.”；对我来说：for me。故填too；for；me；to。54 interesting enough for【详解】句意：这本书如此的有趣以致于每个人都喜欢读它。根据“so interesting that”可知，原句中使用的是so.that引导结果状语从句，其同义句可以使用“adj.+enough for sb. to do sth.”这一句型。故填interesting；enough；for。55 easy enough to【详解】句意：这道数学题对我来说太难了。too . to do sth.“太而不能做某事”，改写后的句子空前有否定词isn

49、t，形容词用difficult的反义词easy表示“容易的”，此处表示不够容易，enough后置，修饰形容词，其后用动词不定式。故填easy；enough；to。56 arent allowed【详解】句意：学生不能长时间上网。“mustnt”表示“否定”，题干中缺少谓语部分来表达此意。“学生不能”即“学生不被允许”的意思，由主动语态变为被动语态“be+done”的形式，原句为一般现在时，故填arent；allowed。57 is harmful to【详解】句意：空气污染对我们的健康有害。缺少的内容是“对有害”，do harm to=be harmful to“对有害”，主语“Air pol

50、lution”是单数，时态是一般现在时，be动词用is。故填is；harmful；to。58 will be handed【详解】句意：明天他会交作业。原句是一般将来时态，被动结构为will+be+动词过去分词，hand过去分词为handed。故填will；be；handed。59 will produce【详解】句意：这个工厂将在一周内生产200多辆汽车。变为主动语态，把原句的主语变为宾语，时态是一般将来时：will do。produce“生产”，动词。故填will；produce。60 was to【详解】句意：我父亲昨天让我早起。结合题干，该同义句“I.made.get up early

51、 by my father yesterday.”应用一般过去时的被动语态，而make sb. do sth.的被动表达为sb. be made to do sth.“某人被要求做某事”，句子主语是I，所以此时be动词应用was。故填was；to。61 Were you【详解】句意：当我到达张先生家时，他们正在为聚会做准备。原句的主句时态是过去进行时，变为一般疑问句时，把be动词were提前位于句首，首字母需要大写；原句中的第一人称I转换为第二人称you，故填Were；you。62 dont need【详解】句意：我需要钱买文具。根据“I need money to buy stationer

52、y.”可知时态为一般现在时，变否定句在谓语动词“need”前加助动词dont，故填dont；need。63 was of【详解】句意：迈克很慷慨。他和我分享了他的书。合并为一句后为It was/is+adj.+of/for+sb.+to do sth.句型，原句为一般过去时态，故用was；此句的形容词“generous”表示人的品质，故介词用of。合并后表示“迈克和我分享他的书，真是太慷慨了。”故填was；of。64 Dont push【详解】句意：你不能在其他人之前插队。根据原句中“cant”可知，应改为祈使句的否定形式，用“Dont+动词原形+其他”的结构，句首首字母d需大写，push i

53、n表示“插队”，push“推”，动词。故填Dont；push。65 to go【详解】句意：让我们讨论一下考试后我们去哪里。根据语境可知，句子为宾语从句，且从句主语与主句主语相同，主句谓语为discuss，改为简单句，从句应用“疑问词+不定式”的结构，不定式to后接动词原形，go“去”，动词。故填to；go。66 to meet【详解】句意：西蒙忘了什么时候会见到他的朋友。宾语从句可改为“疑问词+动词不定式”结构，即when to meet“什么时候见”。故填to；meet。67 dont have to【详解】句意：我们周末不得不上学。have to情态动词，但是有人称和数的变化，否定句需借

54、助助动词dont。故填dont；have；to。68 Dont miss【详解】句意：当你游览纽约时，你不能错过百老汇。原句为否定句，改为祈使句时也应用否定形式：Dont+实义动词原形+其他，即Dont miss，故填Dont；miss。69 Have heard【详解】句意：我听说过电影少年派的奇幻漂流。本句是现在完成时，变为一般疑问句，把助动词have提到句首，第一人称I变为第二人称you，heard照抄下来。故填Have；heard。70 have already heard【详解】句意：我还没有她的消息。根据原句中的谓语可知，原句用的是现在完成时，题目要求将其改为肯定句，所以我们需要将

55、助动词have后面的not去掉，句末的yet是“已经”的意思，常用在否定句中，因此要将yet改为它的同义词already，already也是“已经”的意思，常用在肯定句中，然后要将already放在助动词后，行为动词之前。故填have；already；heard。71didnt receive【详解】句意：半小时之前丹尼尔收到一份信。原句是一般过去时的肯定句，变否定句在实义动词received的前面加助动词didnt，同时received变为原形。故填didnt receive。72 Did take【详解】句意：政府随后采取行动改善了这种情况。原句时态是一般过去时，变一般疑问句时，助动词用d

56、id，放在主语前，后跟动词原形，故填Did；take。73 Has become【详解】句意：污染已成为全世界的一个严重问题。考查陈述句改为一般疑问句。原句是现在完成时，改为一般疑问句时，把助动词has提到句首，首字母要大写，后接动词become的过去分词。故填Has；become。74 will be bought【详解】句意：明天我要给我妈妈买一个手提包。考查主动语态变被动语态。原句是一般将来时，应改为一般将来时的被动语态，其结构为will be done。buy的过去分词为bought。故填will be bought。75 will cut【详解】句意：这个苹果将被丹尼尔切成两半。原句

57、是一般将来时的被动语态，变为主动语态，即一般将来时：will+动词原形。过去分词cut“切”的原形是cut，动词。故填will；cut。76 didnt know【详解】句意：她在成为护士之前就知道该做什么。原句是what引导的宾语从句，变否定句时，需要否定转移到主句部分，主句时态是一般过去时，所以助动词用didnt，后跟动词原形know。故填didnt；know。77 clever enough【详解】句意：这个小男孩如此聪明，以至于他能解出这道数学难题。本句是sothat引导的结果状语从句，改为简单句，可使用“形容词/副词+enough to do sth.（意思是：足够，以至于）”句型表

58、达，此句改为“这个小男孩足够聪明，以至于他能解出这道数学难题。”故答案为(1). clever (2). enough 。78 doesnt cause【详解】句意：骑自行车会造成空气污染吗？题目要求改为否定句，根据原句“Does”提示可知，此处应用助动词的否定式doesnt，动词cause位于其后应用原形。故填doesnt；cause。79 No you neednt【详解】句意：我现在必须开始跳舞吗？原句为情态动词must开头的一般疑问句，根据答语所给空数可知，否定回答应用“No, 主语+neednt”的结构，问句主语为I，答语中应改用第二人称单数you，句首首字母n需大写。故填No；you；neednt。80 for two years【详解】句意：自从两年前我就已经学习英语了。since two years ago表示“自从两年前”，即学习英语两年了，相当于for two years，故填for；two；years。