1、Unit 3 Computers课时作业11Grammar.单句改错(句中有1处错误)1All possible means has been tried to protect this kind of animals in danger up to now.hashave2It is reported that very little use of the waste had been made in the past decades.hadhas3How many times have you told not to play football in the street?Im sorry
2、. Ill never do that again.you后加been4The laws being discussed to protect the rights of women and children better.laws后加are5His sister left home in 1998, and has not been heard since.heard后加of6When you get the paper back, pay special attention what has been marked.attention后加to7In recent years many sp
3、orts clubs have run as business to make a profit.have后加been8I want to buy this kind of cloth because I have been told that the cloth washed well.washedwashes9Potatoes have been used to making different kinds of food in the countryside.makingmake10I like these songs very much which have been teaching
4、 recently on the radio.teachingtaught.用所给词的适当形式填空1The machine has_been_connected (connect) to a computer already.2This country has_been_stopped (stop) from borrowing money internationally for the past 15 years.3After each step you can check to see if the date has_been_changed (change) as expected.4W
5、e all enjoy these English songs and they have_been_taught (teach) quite a few times on the radio.5Your English is very good.Im still nervous. After all, it is only the second time that I have_met (meet) foreign guests.6If the paper has_been_finished (finish), please hand it in.7I dont believe youve
6、already finished reading the bookI lent (lend) it to you this morning!8Youve failed to do what you were_expected (expect) to and Im afraid the teacher will blame you.9Every year a flood of farmers arrive in Shenzhen for the moneymaking jobs they have_been_promised (promise) before leaving their home
7、towns.10Some of the largest oil fields in recent years have_been_discovered (discover) off the Brazilian coast.句型训练1Too many houses have_been_built in the past three years, so the prices are sure to fall.(build)在过去的三年中，人们建了太多房子，因此，房价下跌已成必然。2I like this science fiction film and it has_been_broadcast
8、three times on TV.(broadcast)我喜欢这部科幻电影，它已经在电视上播了三次了。 3In the last few years thousands of films have_been_produced all over the world.(produce)在过去的几年里，全球有成千上万部电影被制作。4Since 1980, good use has_been_made of wind to produce electricity.(make)自从1980年，人们已经能很好地利用风能来发电。5The two countries have agreed to hold
9、another meeting to discuss the dispute，but when and where it will be held hasnt_been_decided yet.(decide)两国已经同意会再次举行会议来商讨这个争端，但何时何地举行还未定下来。.语法填空阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。The World Wide Web _1_ (invent) in 1991 by an English scientist, Tim BernersLee. BernersLee built his _2_ (one) computer whi
10、le he was studying at university with an old television! He came up with the idea of the World Wide Web in 1989 while he was working in Switzerland.BernersLee made _3_ possible for everyone to use the Internet, not just universities and the army. He designed the first “web browser”， _4_ allowed comp
11、uter users _5_ (access) documents from other computers. From that moment on, the web and the Internet grew. Within five years, the number of Internet users _6_ (rise) from 600,000 to 40 million.The Internet has created thousands of _7_ (million), _8_ BernersLee is not one of them. Everyone in the wo
12、rld can access the Internet _9_ (use) his World Wide Web system. He now works as a _10_ (lecture) at Massachusetts Institute of Technology in Boston.1was_invented解析：考查时态和语态。根据本句中的时间状语in 1991可知，此处应用一般过去时，表示发生在过去的动作；又因主语the World Wide Web和invent之间是动宾关系，故填was invented。2first解析：考查序数词。这里的意思是，他在上大学时就用一台旧电
13、视制造出他的第一台电脑。故填序数词first。3it解析：考查it作形式宾语。it在此作形式宾语，后面的动词不定式结构作真正的宾语。故填it。4which解析：考查非限制性定语从句。在这个非限制性定语从句中，先行词是the first “web browser”指物，关系词在从句中作主语。故填which。5to_access解析：考查固定用法。allow sb. to do sth.是固定用法，意为“允许某人做某事”，因此用不定式to access。6rose解析：考查时态。根据上文语境可判断出，此处应用一般过去时，表示发生过的动作。7millionaires解析：考查名词复数。根据语境可知，
14、因特网造就了成千上万的百万富翁，但是，BernersLee并没有成为百万富翁。所以此处应用millionaire的复数形式。8but解析：考查连词。根据语境可知，上下文之间是转折关系，此处应用but。9using解析：考查非谓语动词。因为主语everyone和use之间存在逻辑上的主谓关系，故填using。10lecturer解析：考查名词。根据语境可知，BernersLee现在是一名讲师，所以此处应用lecturer。.完形填空Kids are going all over the world without leaving their school. They are using thei
15、r computers. A school in _1_ could be the most wired school in America. They are wired to the Internet _2_ their computers.Thirty students are able to _3_ the Internet every day. The kids are _4_ the grades of kindergarten and fifth grade. The teacher says that it is hard to get them _5_ from the co
16、mputers. They do not _6_ want to go to take a rest (休息)The Internet has _7_ the world to many people. Now students can go to any library _8_ earth. They can get _9_ about the world.Laura Bacon likes to _10_ with other students. Shes going to Peggys page. Peggy is a student in London, England. She pu
17、t her own home page on the Internet. It _11_ pictures of Peggy, her school, her mom, her dad and her friends. Laura can _12_ her mails, too.A scientist helped to _13_ the schools. He said, “Here is a plan to _14_ twelve thousand California schools to the Internet.”Wired schools in California will _1
18、5_ a lot of money. It needs the _16_ of the volunteers or schools will not be able to _17_ it. They think that it will cost _18_ fifty billion dollars.Some people say that the money should be spent on teachers _19_ computers.Other people say that it would be _20_ it to wire all of the classrooms.文章主
19、要介绍了加利福尼亚一所学校的中学生使用电脑的情况。1A.London BCaliforniaCParis DTokyo答案：B解析：根据后半句“.the most wired school in America.”可知，要选属于美国的城市，只有B项属于美国。2A.on BbyCthrough Din答案：C解析：on与radio，TV等连用，by后加运输工具、方式等，不能与computer连用，因此此处选through。3A.play BlookCcall Duse答案：D解析：look为不及物动词，其后不加宾语；call sb.“打电话给某人”，都不符合句意，只有D项正确。4A.during
20、 BamongCbetween Dover答案：C解析：根据后半句“.the grades of kindergarten and fifth grade.”可知，要选between与and搭配。5A.away BoffCdown Dout答案：A解析：get away from “远离”。6A.ever BevenCnever Dhardly答案：B解析：ever “曾经”；even “甚至”；never “从不”；hardly “几乎不”。根据句意应选B项。7A.got BgaveCleft Dopened答案：D解析：通过后文“Now students can go to any lib
21、rary.”可以看出，因特网向许多人开放了世界，从而才能使学生去任何一个图书馆。8A.on BinCbelow Dover答案：A解析：on earth为固定用法，“在世界上”，符合文章意思。9A.information BmessagesCnotes Dfriends答案：A解析：这一段主要说因特网的作用。句意：他们可以获得关于世界的信息。根据句意应选A项。10A.drop BsurfCvisit Dcall答案：C解析：visit with sb.“与某人聊天”，符合文意。11A.includes BbansCcovers Dconcludes答案：A解析：根据语境“She put her
22、 own home page on the Internet.”可知，应选A项。12A.receive BsendCwant Ddeliver答案：B解析：send与mails搭配，意为“发送邮件”。13A.visit BbuildCwire Dreform答案：C解析：根据下文语境“Wired schools in California will _15_ a lot of money.”可知，应选C项。14A.take BbringCtie Dconnect答案：D解析：take.to“把带去”；bring.to“把带来”；tie.to.“把系到上”；connect.to.“把连接到上”。
23、由句意可知选D项。15A.spend BcostCtake Dworth答案：B解析：表示花费，当物作主语时，用cost。16A.effort BeffectCaffection Daffect答案：A解析：effort “努力”；effect “影响”；affection “喜爱”；affect是动词，不合题意。根据句意应选A项。17A.offer BcoverCafford Dgive答案：C解析：afford“付得起”，根据句意应选C项。18A.as far as Bas long asCas many as Das much as答案：D解析：as far as“远至，就”；as lo
24、ng as“只要，如果”；as many as修饰可数名词；as much as修饰不可数名词，强调数量。因为钱(money)为不可数名词，需用as much as修饰，意为“多达”。19A.instead of Bin place ofCbecause of Din exchange for答案：A解析：句意：一些人说，钱应花在老师身上而不是花在电脑上。instead of “而不是”，根据句意应选A项。20A.worth of BworthCworthless Dpriceless答案：B解析：worth为形容词，“值得，价值为”。A项结构不对；C、D两项放在此处语意不通。.短文改错Dea
25、r friends, I have some advices about computers to share with you.Now the computer had become a good friend of us students. It has made our life more colorful. We can get information fast under its help. Through the Internet we can talk with people thousands of miles far away.However, there have some
26、 disadvantages. It gives us some trouble. Im afraid that we spend a bit too much time play games in front of the screen. Our studies and health are getting worse. Our parents are beginning to worry us. In addition, we surely have less time leaving to get together with others. In this case, the compu
27、ter is taking away our human nature.My suggestion is that we would use the computer to improve our life and work on the one hand, and enjoy the sunshine or fresh air with our friends on the other.答案Dear friends, I have some about computers to share with you.Now the computer become a good friend of u
28、s students. It has made our life more colorful. We can get information fast its help. Through the Internet we can talk with people thousands of miles away.However, there some disadvantages. It gives us some trouble. Im afraid that we spend a bit too much time games in front of the screen. Our studie
29、s and health are getting worse. Our parents are beginning to worry us. In addition, we surely have less time to get together with others. In this case, the computer is taking away our human nature.My suggestion is that we use the computer to improve our life and work on the one hand, and enjoy the sunshine fresh air with our friends on the other.
