1、人教版高中英语必修二 unit 3 computers grammar(共28张PPT)人教版高中英语必修二 unit 3 computers grammar(共28张PPT)revisionWill/shall +be +V过去分词过去分词构成形式构成形式:一般将来时被动语态一般将来时被动语态(Future Passive Voice)shall 用于第一人称用于第一人称:I/we,will 用于任何人用于任何人称称be going to be+V过去分词过去分词be to be+V过去分词过去分词否定句否定句:一般疑问句一般疑问句:在在will/shall后后+not把把will/shal
2、l 提前提前The students of class one will clean the playground.The playground will be cleaned by the students of class one.We are going to hold a meeting on Saturday afternoon.A meeting is going to be held(by us)on Saturday afternoon.The twins are to repair the machine tomorrow.The machine is to be repai
3、red(by the twins)tomorrow.The host will give the winner a computer as the prize.获胜者将被赠予一台电脑作为奖励获胜者将被赠予一台电脑作为奖励.The winner will be given a computer as the prize(by the host).一台电脑将被赠给获胜者作为奖励一台电脑将被赠给获胜者作为奖励.A computer will be given(by the host)to the winner as the prize.Are you familiar with these comp
4、uters?Can you call them?A wrist-worn PC A wrist-worn PC has been invented has been invented recently.recently.A pen-like computer A pen-like computer has has already already been developed.been developed.A calculating machine;replaceThe buildings;destroy;earthquakeA calculating machine has been repl
5、aced with the laptop.The buildings have been destroyed in an earthquake.1.1.A calculating machine A calculating machine has been replacedhas been replaced with with the laptop.the laptop.2.2.The buildings The buildings have been destroyedhave been destroyed in an in an earthquake.earthquake.3.3.The
6、sports meeting The sports meeting hashas already already been heldbeen held in in our school.our school.Do the underlined parts have something in common?Discovering:has/have been done现在完成时现在完成时被动语态被动语态现在完成时的被动语态现在完成时的被动语态现在完成时的被动语态的用法现在完成时的被动语态的用法 1.表示一个被动的表示一个被动的动作动作发生在发生在说话之前说话之前,强调对强调对现在造成的现在造成的影
7、响和结果影响和结果.The door has been locked.2.表示一个被动的动作或状态开始于过去表示一个被动的动作或状态开始于过去,持续持续到现在到现在,并可能持续下去并可能持续下去,常与常与for 或或since引导引导的时间状语连用的时间状语连用,或用于或用于How long.?句型中句型中.The important problem has been discussed for nearly two weeks.How long has the machine been used?现在完成时的标志现在完成时的标志:recently/already/yet for+一段时间一段
8、时间/since+时间点时间点句型句型He has been sent to study the new technology in the company.否定句否定句:He has not been sent to study the new technology in the company.一般疑问句一般疑问句:Has he been sent to study the new technology in the company?特殊疑问句特殊疑问句:Where has he been sent to study the new technology?在在have/has 后加后加no
9、thave/has 提前提前疑问词疑问词+have(has)+主语主语+been+V过去分词过去分词.+.?Great changes _ in the city,and a lot of factories _.A.have been taken place ;have been set upB.have taken place;have been set upC.have taken place;have set upD.were taken place;were set upB1.They not have finished the homework which should be fi
10、nished yesterday.2.Does the new program have been developed for the robot?3.How many have teachers been interviewed for the job?Has the new programhave notteachers have二、现在完成时的被动语态应注意的几个问题二、现在完成时的被动语态应注意的几个问题 1.请注意现在完成时的被动语态的两个助动词请注意现在完成时的被动语态的两个助动词,即即have/has和和been,两者缺一不可。两者缺一不可。2.请注意与请注意与一般过去时的被动语
11、态一般过去时的被动语态的区别。一般过去的区别。一般过去时的被动语态所表示的动作或状态与现在的情况时的被动语态所表示的动作或状态与现在的情况没有没有联系联系,而现在完成时的被动语态则而现在完成时的被动语态则强调与现在情况的强调与现在情况的联系联系.The bridge was built last year.这桥是去年建成的。The bridge has been built.这桥已经建好了。三、三、巩固练习巩固练习 1.How many times_ not to play with fire?Im sorry.Ill never do that again.A.do you tell B.h
12、ad you told C.are you told D.have you been told 2.The fire _ to the fifth floor._ all the people _?A.has got;Have;been saved B.has been got;Have;saved C.has got;Do;save D.has got;Have;saved3.Do you know the thief _ by the police?A.has caught B.has been catchingC.was caught D.has been caught 人教版高中英语必
13、修二 unit 3 computers grammar人教版高中英语必修二 unit 3 computers grammarHomework:准备月考准备月考人教版高中英语必修二 unit 3 computers grammar人教版高中英语必修二 unit 3 computers grammar3.请注意一些特殊动词请注意一些特殊动词,如如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。若要表达相应表示一段时间的状语连用。若要表达相应的意思的意思
14、,则需改换动词或时态。如则需改换动词或时态。如:误 How long has this book been bought?正 How long ago was this book bought?但这类动词的否定式可表示动作的持续过程但这类动词的否定式可表示动作的持续过程,具有连续性具有连续性,因而可与因而可与since或或for引导的时引导的时间状语连用。如间状语连用。如:No books have been bought since last week.自上周以来,没有人来买过书。人教版高中英语必修二 unit 3 computers grammar人教版高中英语必修二 unit 3 com
15、puters grammar4.This is one of the happiest days _ spent in my life.A.that have ever been B.that have never beenC.which was ever D.which we have never5.When and where to go for the on-salary holiday_ yet.A.are not decided B.have not been decided C.is not being decided D.has not been decided人教版高中英语必修
16、二 unit 3 computers grammar人教版高中英语必修二 unit 3 computers grammar1.-How long _ at this job?-Since 1990.A.were you employed B.have you been employed C.had you been employed D.will you be employed 2.When and where to go for the on-salary holiday _yet.(2003 上海春季上海春季)A.are not decided B.have not been decide
17、d C.is not being decided D.has not been decided3.All the preparations for the task_,and were ready to start.(2000 北京春季北京春季)A.completed B.complete B.C.had been completed D.have been completed BDD人教版高中英语必修二 unit 3 computers grammar人教版高中英语必修二 unit 3 computers grammarExample:I have read this book many t
18、imes.This book has been read many times.1.We have completed all the preparations for the task,and were ready to start.2.This company has produced new types of computers.3.They have interviewed several teachers for the job.4.George has sent some texts and pictures to his friends cellphone.5.They have
19、 developed some programmes for the human resource department of their company.1.Change the following sentences into the Present Perfect Passive Voice.Practice:人教版高中英语必修二 unit 3 computers grammar人教版高中英语必修二 unit 3 computers grammar2.Change the following sentences into the Present Perfect Passive Voice
20、.Put the verbs into correct form.Recently we have bought a new personal computer.We have used the computer every day since we bought it.We have just joined our computer to the Internet.However,we have found many problems with it.So we have decided to ask a professional man to fix it.Soon he has fixe
21、d the computer.He has built a PC way we wanted.How excited we are!These days we have written a lot of E-mails on the computer.We have decided to write a report about the positive and the negative effects of using computers.人教版高中英语必修二 unit 3 computers grammar人教版高中英语必修二 unit 3 computers grammar8.All t
22、he preparations for the project _,And were ready to start.A.completed B.had been completed B.C.complete D.have been completedC.9.Great changes _ in the city,and a lot of D.factories _.E.have been taken place ;have been set upF.B.have taken place;have been set upC.have taken place;have set upD.were t
23、aken place;were set up10.The book _ under the bench for two days.has put B has been lying C.has been put D.has been laidDBB人教版高中英语必修二 unit 3 computers grammar人教版高中英语必修二 unit 3 computers grammarWhat has been decidedWhat has been decidedExample:S1:It has been decided that those who S1:It has been deci
24、ded that those who do not do heir homework will be asked to return do not do heir homework will be asked to return to school on Saturday.to school on Saturday.S2:It has been decided that those who keep the S2:It has been decided that those who keep the classroom tidy should be allowed to go home cla
25、ssroom tidy should be allowed to go home early everyday.early everyday.S3:It has been decided S3:It has been decided S4:S4:Get into groups of four.Your task is to decide what has been decided for the class.Take turns to make the ideas as interesting or as lively as you can.Collect the ones you all l
26、ike best and be prepared to tell them to the class.Play a game:人教版高中英语必修二 unit 3 computers grammar人教版高中英语必修二 unit 3 computers grammar He has been writing the report for two days.变为被动语态的结构是：The report has been written by him for two days.人教版高中英语必修二 unit 3 computers grammar人教版高中英语必修二 unit 3 computers
27、grammar5.Some new oil fields_ since 1976.A.were opened up B.has opened up C.have been opened up D.had been opened up6.The silence of the library_ only by the sound of pages being turned over.A.has been broken B.breaks C.broke D.was broken7.-_ the sports meet might be put off.-Yes,it all depends on t
28、he weather.A.Ive been told B.Ive told C.Im told D.I told为D,C,B,D,C,A和A 人教版高中英语必修二 unit 3 computers grammar人教版高中英语必修二 unit 3 computers grammar1.现在完成时被动语态肯定句现在完成时被动语态肯定句主语主语+has/have been+P.P.+.(P.P.=动词的过去分词形动词的过去分词形式式)Her motorbike has been stolen.她的摩托车被盗了。All the offices have been linked by computer
29、.所有的售票处由计算机联网工作。2.现在完成时被动语态否定句现在完成时被动语态否定句主语主语+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。人教版高中英语必修二 unit 3 computers grammar人教版高中英语必修二 unit 3 computers grammar3.现在完成时被动语态一般疑问句现在完成时被动语态一般疑问句句型句型1Has he(s
30、he,it,单数名词单数名词)+been+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现在完成时被动语态特殊疑问句疑问词疑问词+have(has)+主语主语+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 buil
31、dings have been built 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?人教版高中英语必修二 unit 3 computers grammar人教版高中英语必修二 unit 3 computers grammar1构成：构成：主动语态主动语态 被动语态被动语态现在完成时现在完成时 have/has doneHe has been sent to study the new technology in the company.The dirty clothes have not been washed.Have the windows been cleaned?How many shopping centers have been built in this city?The Present Perfect Passive Voice （现在完成时的被动语态）现在完成时的被动语态）have/has been doneLearning the structure:人教版高中英语必修二 unit 3 computers grammar人教版高中英语必修二 unit 3 computers grammar
