Unit 3 Discovering Useful Structures 语法（ppt课件）-2023新人教版（2019）《高中英语》必修第二册.pptx

1、PPT模板下载： 3 现在完成时被动语态PPT模板下载： I PPT模板下载： and more trees and flowers _(plant)on the either side of the roads.have been plantedPPT模板下载： buildings_(build)everywhere.have been builtPPT模板下载： life has been greatly improved by the Internet.2.The Internet has greatly improved Jans life.3.People have written

2、much about the wonders of the World Wide Web.4.Much has been written about the wonders of the World Wide Web.被动主动主动被动 现在完成时谓语结构 主动被动have/has donehave/has been done.已经被.PPT模板下载： present perfect passive voice一、定义定义 表示动作已经完成，强调对现在造成的影响和结果。常与一些副词连用，如already,ever,never,recently，lastly,just,yet等，通常把副词放在助动

3、词have或 has的后面，有时候也可以放在句末。表示一直持续到现在的动作或状态。*The child has bee taken care of by gandma all these years.这些年来，孩子一直由奶奶照看。PPT模板下载： been done.否定式否定式主语主语have/has not been done.一般疑问式一般疑问式Have/Has主语主语been done.？特殊疑问式特殊疑问式疑问词疑问词have/has主语主语been done.？A new network has been set up.一个新的网络已经建立起来了。一个新的网络已经建立起来了。To

4、Toms disappointment，his novel has not been published.让汤姆失望的是，他的小说还没有被出版让汤姆失望的是，他的小说还没有被出版。PPT模板下载： research has been done successfully.现在完成时被动语态的肯定式现在完成时被动语态的肯定式：have/has been done The authors new story has not been published.现在完成时被动语态的否定式现在完成时被动语态的否定式：have/has not been done Has his washing machine

5、been repaired?现在完成时被动语态的一般疑问句：把现在完成时被动语态的一般疑问句：把have/has提到主语的前面提到主语的前面 Who has been invited?现在完成时被动语态的特殊疑问句：特殊疑问词现在完成时被动语态的特殊疑问句：特殊疑问词 +have/has been donePPT模板下载： 1908,the Olympic Games was held here for the first time.The Olympic Games has been held in many countries since the 1900s.He was invited

6、to deliver a speech last week.He has been invited to deliver a speech to many companies since he was famous.一般过去时的被动语态现在完成时的被动语态一般过去时的被动语态现在完成时的被动语态拓展PPT模板下载： has been told many times,and he finally understood it.Having been told many times,he finally understood it.The poor have been oppressed and e

7、xploited for so long.The poor,having been oppressed and exploited for so long,took up their guns and knives to kill rich nobles.现在完成时的被动语态现在分词完成被动式现在完成时的被动语态现在分词完成被动式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用法用法1:被动动作发生在过去被动动作发生在过去,已经完成已经完成,对现在造成影响或产生对现在造成影响或产生结果。结果。(already,yet,so far,by now)The letter (post)alre

8、ady.has been postedMany houses (build)for the poor so far.have been built用法用法2:被动动作发生在过去被动动作发生在过去,持续到现在持续到现在,并有可能继续持续下去。并有可能继续持续下去。(for+一段时间一段时间;since；since+段时间段时间+ago)The machine (repair)for two hours but it still doesnt work.has been repairedPaper money (use)for over 50 years.has been usedPPT模板下载：

9、 the pairs of sentences.Underline and compare the different verb forms.Jans life has been greatly improved by the Internet.The Internet has greatly improved Jans life.Much has been written about the wonders of the World Wide Web.People have written much about the wonders of the World Wide Web.PPT模板下

10、载： the sentences into the present perfect passive voice.EXAMPLE Theyve built a kind of new PC with more functions.-A kind of new PC has been built with more functions.1 I have downloaded the software to help my phone battery last longer.2 Someone has lost an identity card.3 Have you confirmed the Wi

11、-Fi password?4 Have you pressed the button yet to copy the file?5 Has anyone made a comment about the online database?Answers:1 The software has been downloaded to help my phone battery last longer.2 An identity card has been lost.3 Has the Wi-Fi password been confirmed?4 Has the button been pressed

12、 yet to copy the file?5 Has a/any comment been made about the online database?PPT模板下载： have downloaded the software to help my phone battery last longer.2.Someone has lost an identity card.3.Have you confirmed the Wi-Fi password?4.Has anyone made a comment about the online database?The software has

13、been downloaded to help my phone battery last longer.An identity card has been lost.Has the Wi-Fi password been confirmed?Has a/any comment been made about the online database?SUMMMARY现在完成时的被动语态含义结构1.1.表示过去发生的动作强调对现在的影响；2.2.动作从过去某一时间一直持续到现在。have/has been done用法主语和谓语之间存在被动关系PPT模板下载： done a lot of wor

14、k on it,but we _(finish)yet.2.Tom _(work)in the library every night over the last three months.3.More public transport _(build)in China,making it easier for people to travel.4.Progress _(be)so far very good and we are sure that the work will be finished on time.5._(eat)at the cafeteria before,Tina d

15、idnt want to eat there again.have not finishedhas been workinghas been builthas been Having eaten 高考链接PPT模板下载： agreement _(reach)yesterday after many rounds of talks.7.Despite the previous rounds of talks,no agreement _(reach)so far by the two sides.8.I _(show)around the Water Cube for many times si

16、nce it was built.9._(show)around the Water Cube,we were then taken to see the Birds Nest for the 2008 Olympic Games.was reachedhas been reachedhave been shown Having been shown PPT模板下载： as a PC and then as a laptop,I_(use)in offices and homes since the 1970s.2.Over time my memory _(develop)so much t

17、hat,like an elephant,I never forget anything I _(told).3.Since the 1970s many new applications _(find)for me.4.I have also _(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.has developedhave be

18、en told have been used have been foundbeen puthelphave even been put PPT模板下载： Ming：Hi，Lin Tao.How nice to see you on the first day of the new term!Lin Tao：Yes.Nice to see you again.Li Ming：I know that your parents 6.(work)in Yushu for years.Can you tell me something there after the earthquake?Lin Ta

19、o：Of course.Since the earthquake 7.(happen)，many soldiers 8.(send)there，and many kinds of supplies(物资供应物资供应)9.(carry)there from all over the country.Now，most people there 10.(live)a happy life again.have been workinghappenedhave been senthave been carriedlive/are livingPPT模板下载： art festival _(hold)n

20、ext month.Recently,many English plays _(try)and we finally choose a short English play.Since then,we _(practice)these days._(know)that you have much experience in English plays,we hope you can give us some advice on it._(tell)the effective way to practice and perform,we still need your further guidance.We _(practice)at the school hall this Thursday afternoon.We _(appreciate)it very much if you could give us some suggestions.will be heldhave been triedhave been practicingKnowingHaving been toldare going to practicewould appreciatePPT模板下载： You