1、Unit 3ComputersLearning about language,高一人教新课标版必修二,1 Find the word or expression for each of the following meanings from the text.,_ complete change in ways of thinking, working, etc. 2. _ connected computer system 3. _ to make things easier 4. _ to find the answer using numbers,calculate,simplify,r
2、evolution,network,Discovering useful words and expressions,5. _ can be moved easily from place to place _ to work out the answer to a problem _ to travel around an area to find out about it 8. _ completely 9. _ anyway 10. _ activity of managing money,finance,anyhow,totally,explore,solve,mobile,2 Com
3、plete the passage with the words below.,artificial technology intelligent Web applications explore reality logically,My brother was very interested in computers and enjoyed writing programs of his own. He used to download information from the Internet and made good use of it. He liked to _ the World
4、 Wide _ and,explore,Web,used the Internet to communicate with computer programmers all over the world. When he went to university he studied IT (information _) and developed a special interest in _ intelligence. After developing special _ of the computer, he hopes to design an _ robot which can thin
5、k _ and look like a human being, but in _ he has a long way to go.,technology,artificial,applications,intelligent,logically,reality,Grammar,The Present Perfect Passive Voice,A calculating machine; replace,A calculating machine has been replaced with the laptop.,Make sentences.,The buildings; destroy
6、; earthquake,The buildings have been destroyed in an earthquake.,1) 现在完成时(have/has + 过去分词) 现在完成时的动作或情况虽然发生在过去，但它强调的是与现在的关系，用来说明现在的情况。现在完成时不能与表示确定的过去时间的状语连用, 如: yesterday, two weeks ago, in 1978, when I got there 等, 现在完成时常与 already, always, often, ever, never, yet, not.yet, just等不表示明确,1. 两种时态,的时间副词连用
7、, 还可以和表示时间一直延续到目前的带since, for 的状语及包括现在在内的词连用。如: now, today, this month, this year, recently, these few days 等。不能用在现在完成进行时态的动词, 如: be, have, like, love, know, believe, hate等。一般过去时则是表示过去某时发生的动作或情况, 与现在毫无关系。,2) 现在完成进行时 (have/has + been + 现在分词),1) 一般现在时的被动语态 (am/is/are+ 过去分词)如: The work is done during t
8、wo days. 2) 一般过去时的被动语态 (was/were+ 过去分词),2. 七种被动语态形式,如: He was sent to the hospital immediately after the accident. 3) 一般将来时的被动语态 (will/shall + be + 过去分词或 + be going to + be + 过去分词) 如: The work will be finished soon. 4) 现在进行时的被动语态 (is/am/are + being+ 过去分词) 如: The bridge is now being constructed.,5) 现
9、在完成时的被动语态 (have/has +been + 过去分词) 如: The radio has been repaired when we phoned the shop. 6) 带情态动词的被动语态 (情态动词 + be + 过去分词) 如: This can be done in a few minutes.,7) 动词不定式的被动式 (to be + 过去分词) 如: It is an honor for me to be asked to speak here.,现在完成时的被动语态表示动作发生在过去, 到现在已经完成或对现在仍有影响, 其构成是: have/has been +
10、 done。如： 1. The dirty clothes have been washed.脏衣服都已经洗了。 2. The plan has been studied by the experts for three times.这项计划已经由专家研究过三次了。,现在完成时的被动语态,3. The child has been taken care of by Grandma Wang all these years. 这些年来, 这个小孩一直由王奶奶照料。,现在完成时被动态： have / has + been + 动词过去分词 现在完成进行时： have / has + been +
11、动词现在分词,它们的构成的区别在最后的动词上, 被动态接的是过去分词形式, 现在完成进行时接的是现在分词形式。,1. 主语是行为动作的承受者。如： The Temple of Zhang Fei has been rebuilt. 张飞庙已经过重建。,2. 说话时已经完成的动作或出现的结果。如:The door has been locked. 门已经被锁上了。 3. 动作或状态始于过去, 持续到现在, 并可能 持续下去。如：He has been told about it for many times. 有人告诉他这事很多次了。(可能还会有人告诉他),(我或别人现在进不去),4. 用在时间
12、和条件状语从句中, 表示将来某时已完成的动作。如： Well start as soon as the work has been finished. 工作一完成我们就立即动身。,注意:,副词的位置 often, usually, always, never, hardly, seldom等副词置于have/has和been中间。 如: 误 Such a man has been hardly believed.正 Such a man has hardly been believed.,2. 并不是所有动词都有被动语态1) happen, take place, break out, bel
13、ong to, cost, last等不及物动词或词组无被动语态。如：误 Great changes have been taken place in China since 1978.正 Great changes have taken place in China since 1978.,2) open, break, drop等不强调动作发出者时常用主动语态。如：误 The door has been opened of itself.正 The door has opened of itself.,3. 短语动词不可分割或省略其中的介词或副词。如： The SARS patients
14、have been taken good care of.,4. 一些特殊动词, 如borrow, finish, begin, buy, start, return, marry, open, join等 构成的现在完成时的被动语态不能与 表示一段时间的状语连用。若要表达 相应的意思, 则需改换动词或时态。如：,My brother has had(不能用has bought) this bike for almost four years. How long has this book been bought? How long ago was this book bought?,(1)
15、不知道或没有必要说明动作的执行者是谁。 如: Some new computers were stolen last night. 一些新电脑在昨晚被盗了。(不知道电脑是谁偷的)This book was published in 1981.这本书出版于1981年。,被动语态的用法:,(2) 强调动作的承受者, 而不强调动作的执行者。如: The window was broken by Mike.窗户是迈克打破的。This book was written by him.这本书是他写的。,(1) 把主动语态的宾语变为被动语态的主语。 (2) 把谓语变成被动结构(be过去分词)(根据被动语态句
16、子里的主语的人称和数，以及原来主动语态句子中动词的时态来决定be的形式)。,主动语态变被动语态的方法,(3) 把主动语态中的主语放在介词by之后作宾语, 将主格改为宾格。如：All the people laughed at him.He was laughed at by all people.They make the bikes in the factory.The bikes are made by them in the factory.歌诀是: 宾变主, 主变宾, by短语后面跟。谓语动词变被动, be后“过分”来使用。,4) 双宾语动词变被动语态可将其中的 一个宾语变为主语, 另
17、一个保留不动。 主动: I have given him the key. 被动: He has been given the key. 被动: The key has been given (to) him.,5) 带复合宾语的动词变被动语态时, 只能将宾语变为主语, 原来的宾补 保留不动, 改称主语补足语。 主动: I have asked her to help you. 被动: She has been asked to help you.,1. 现在完成时被动语态肯定句 主语+has/ have been +P.P.+. (P.P.=动词的过去分词形式) Her motorbike
18、has been stolen. 她的摩托车被盗了。 All the offices have been linked by computer. 所有的售票处由计算机联网工作。,句型,2. 现在完成时被动语态否定句 主语+has/ have +not+ been+ P.P.+. The task has not been finished yet. 任务尚未完成。 Many skilled workers have not been trained in the company. 这家公司并没有培养多少熟练工人。,3. 现在完成时被动语态一般疑问句 Has he(she, it,单数名词)+b
19、een+P.P.+.? Has a new computer been bought? 买了一台新电脑吗? Have they been sent abroad to study Eng-lish? 他们已经被派往国外学英语了吗?,4. 现在完成时被动语态特殊疑问句 疑问词+have (has)+主语+been+ P.P.+.? What has been bought by Tom? 汤姆已经买了什么东西? Who have been helped by the new computer? 谁已经得到这种新计算机的帮助? How many buildings have been built
20、in this school?这所学校已经建造了多少座大楼?Where has the car been repaired? 这辆小汽车已经在哪里修理好了?,1. I got caught in the rain and mysuit _. (北京2007)A. has ruined B. had ruinedC. has been ruined D. had been ruined,C,高考链接,2. Professor James will give us a lecture on the Western culture, but when andwhere _ yet. (浙江2007)
21、A. hasnt been decided B. havent decided C. isnt being decidedD. arent decided,A,3. If Newton lived today, he wouldbe surprised by what _ in science and technology. (天津2007)A. had discovered B. had been discoveredC. has discovered D. has been discovered,D,4. Cathy is taking notes of the grammatical r
22、ules in class at Sunshine School, where she _ English for a year. (湖南2007)A. studies B. studiedC. is studying D. has been studying,D,5. With the help of high technology, more and more new substances _ in the past years. (上海2007)A. discovered B. have discoveredC. had been discovered D. have been disc
23、overed,D,6. When you get the paper back, payspecial attention to what _. (四川2007)A. have marked B. have been marked C. had marked D. had been marked,B,一、单项选择,1. Both my brother work at the power station that _ in my hometown.A. has set up B. has been set upC. was set up D. is set up,2. -_ the sports
24、 meet will be put off.A. Ive been told B. Ive toldC. Im told D. I told,B,A,3. All the preparation for the task _, and were ready to start.A. completed B. completeC. had been completed D. have been done,D,4. - How long _ at this job?- Since 1990.A. were you employed B. have you been employedC. had yo
25、u been employed D. will you be employed,B,5. When and where to go for the on-salary holiday _ yet.A. are not decided B. have not been decidedC. is not being decided D. has not been decided,D,6. Betty_ injured since last Saturday. A. has been B. was C. is D. has,A,7. That book _ into at least 20 fore
26、ign languages. A. has said to be translated B. has been said to have translated C. is said that it had been translated D. is said to have been translated,注:该句的句型是:It is said that/people (they) said that/that book is said to 根据句意是已经被译成了20 多种文字所以要用现在完成时的被动语态。,D,8. Hi, Tom, you look tired. - Of course.
27、 I _ the living room all day.A. had painted B. painted C. have been painted D. have been painting,D,9. -Did you move into the new house?- No. The rooms _ yet.A. were being painted B. are paintingC. have not painted D. have not been painted,D,10. Great changes_ in my hometown and a lot of factories _
28、. A. have been taken place; are being set upB. have taken place; have been set upC. are taken place; had been set upD. took place; will set up,B,11. Its said that this book_ into Chinese.A. had translated B. has translated C. was translated D. has been translated,12. You cant move in .The house _. A
29、. is painting B. is being paintedC. has painted D. has been painted,D,B,13. Millions of pounds worth of damage_ by a storm which swept across the north of England last night. (2005重庆)A. has been caused B. had been causedC. will be caused D. will have been cause,A,14. Have you ever_ to the exhibition
30、 which _ for three weeks? A. gone; has been shown B. visited; shown C. been; has been on show D. went; lasted,C,15. -How long ago _ these eggs_?- Perhaps 15 days.A. will; hatchB. did; hatchC. were; hatchedD. have; been hatched,C,二、改错,1. A personal computer has bought by us. A personal computer has b
31、een bought by us. 2. Many problems has been found with our new computer. Many problems have been found with our new computer.,3. A PC has been builded the way we wanted. A PC has been built the way we wanted. 4. Our computer just has been joined to the internet. Our computer has just been joined to
32、the internet.,5. The computer was used every day since we bought it. The computer has been used every day since we bought it. 6. A lot of e-mails had written on the computer in the past 5 years. A lot of e-mails have been written on the computer in the past 5 years.,三、用动词正确形式填空。,1. First as a PC and
33、 then as a laptop, I _ (use) in offices and homes since the 1970s. 2. Over time my memory _ (develop) so much that, like an elephant, I never forget anything I _(told). 3. Since the 1970s many new applications _ (find) for me.,have been used,has developed,have been told,have been found,4. I have als
34、o _(put) into robots and used to make mobile phones as well as _(help) with medical operations. 5. I _(put) into space rockets and sent to explore the Moon and Mars.,been put,help,have even been put,四、用被动语态改写下列句子。They have finished the construction of the new railway lines by now.2. We have built a
35、new library and a gymnasium in our school this year.,The construction of the new railway lines has been finished by them by now. A new library and a gymnasium have been built in our school this year by us.,3. The car factory has produced a great many fine cars since the technological revolution.,A g
36、reat many fine cars have been produced by the car factory since the technological revolution.,4. They have made a plan to help the poor children in the poor area.5. The government has spent a lot of money on the Hope Project.,A plan has been made by them to help the poor children in the poor area.A
37、lot of money has been spent on the Hope Project by the government.,Enjoy a poem!,Look at the way the flowers _ the grass _ The paths _(sweep) I hope that youll come here again.,have been planted,has been cut,have been swept,Look at the way her face _. her hair _(comb) her clothes _. Shed better do them again.,has been washed,has been combed,have been cleaned,Homework,Try to remember the grammar rules and do exercises 1, 2 and 3 on page 21.,
