必修二第二单元语法：现在完成时被动语态课件.pptx

1、Unit 3 现在完成时被动语态现在完成时被动语态n By the end of this period,you will be able to1.analyze the forms and features of the present perfect passive voice.2.find out the differences in meaning and function between the active and passive forms.3.master the functions of the present perfect passive voice in the con

2、text and use it in real situations.What aspects in your life have been changed since the appearance of the Internet?Lead in BeforeAfterTransport Reading Payment Entertainment Try to tell the changes according to the table using the present perfect passive voice.foot;bike;bus;train plane;high-speed r

3、ailpaper books E-books in cash;by credit E-payment watch movies in the theaterStream movies and music;chat online 1.Jans life has been greatly improved by the Internet.The Internet has greatly improved Jans life.2.Much has been written about the wonders of the World Wide Web.People have written much

4、 about the wonders of the World Wide Web.Observe and analyze Underline and compare the different verb forms.Active _Passive _The form of the present perfect passive voiceVerb formhave/has+v-ed have/has been+v-ed一、现在进行时被动语态一、现在进行时被动语态（一）构成（一）构成 1.肯定形式肯定形式 2.否定形式否定形式（二）用法（二）用法1.表示说话时正在进行的被动动作；表示说话时正在进

5、行的被动动作；2.表示现阶段正在进行的被动动作；表示现阶段正在进行的被动动作；3.表示一种表示一种经常性经常性的被动行为，带有感情色彩。的被动行为，带有感情色彩。is/am/are being doneis/am/are not being done 1The alarming report _now.It will be finished this afternoon.A.is writing B.being written C.is being written D.has been written 2Still，in the wild forests，animals _ for profi

6、t.A.are hunting B.are being hunted C.have been hunted D.have hunted 3Nowadays，fish and snakes _ for food in restaurants.A.have been killed B.have killed C.have been killing D.are being killedC B D 练习检测练习检测现在完成时与现在完成时被动语态的动词形式现在完成时与现在完成时被动语态的动词形式找出下面句子的找出下面句子的谓语谓语结构，哪些是结构，哪些是主动主动？哪些是？哪些是被动被动？1.Jans l

7、ife has been greatly improved by the Internet.2.The Internet has greatly improved Jans life.3.People have written much about the wonders of the World Wide Web.4.Much has been written about the wonders of the World Wide Web.被动被动主动主动主动主动被动被动 verb form activepassivehave/has donehave/has been done一、观察例句

8、，归纳现在完成时被动语态的构成。（1）Toms novel has not been published.（2）The experiment has been done successfully.（3）How long has this film been shown?（4）Has his bike been repaired?现在完成时的被动语态现在完成时的被动语态1.肯定形式为肯定形式为:_。如句。如句(2)。2否定形式为否定形式为:_。如句。如句(1)。3一般疑问句式为：一般疑问句式为：_。如句。如句(4)。4特殊疑问句式为：特殊疑问句式为：_。如句。如句(3)主语主语+have/has

9、 been done主语主语+have/has not been doneHave/Has主语主语been done疑问词疑问词have/has+主语主语been done现在完成时被动语态现在完成时被动语态二、把下面句子改错被动语态二、把下面句子改错被动语态.Theyve built a kind of new PC with more functions.A kind of new PC has been built with more functions.1They have just connected the printer to the computer.2They have pu

10、t out the big fire.3Tom hasnt sold out all the magazines.The printer has just been connected to the computer.The big fire has been put out.All the magazines have not been sold out.PracticeChange the sentences into the present perfect passive voice.ExampleThey have built a kind of new PC with more fu

11、nctions.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-Fi password?4.Have you pressed the button yet to copy the file?5.Has anyone made a comment about the onlin

12、e database?1.The problem has been discussed for 2 days.2.Many new buildings have been built in the past few years.3.Two novels have been written by him so far.4.The computer has been used every day since I bought it.5.The dirty clothes have already been cleaned.三、现在完成时被动语态用法三、现在完成时被动语态用法（一）找出表示时间状语的

13、词语并总结用法。（一）找出表示时间状语的词语并总结用法。表示一个被动的动作或状态表示一个被动的动作或状态从过去开始一直持续到现在从过去开始一直持续到现在，常连，常连用的时间状语有：用的时间状语有：for+段时间，段时间，since+时间状语时间状语(从句从句)，these days,so far,up to now,in the last/past few years等。等。即学即练：即学即练：1.This class_(teach)by Mr.Brown for two years.2.His Chinese_(improve)a lot since he came to China.3.R

14、owlings novels_(translate)into many foreign languages so far.have been taught has been improvedhave been translated（二）表某（二）表某被动动作对现在造成的影响或结果被动动作对现在造成的影响或结果，常与，常与already,yet,just,ever,never,recently等连用。等连用。即学即练：即学即练：The bike_(not repair)yet.I _ already_(introduce)to Mr.Smith.注意：注意：有些动词没有被动语态有些动词没有被动语

15、态,如不及物动词如不及物动词happen,take place,break out等。等。1.Great changes _(take)place in my hometown in the past ten years.has not been repaired havebeen introduced have taken现在完成时被动语态的解题步骤现在完成时被动语态的解题步骤1.找时找时：找与现在完成相对应的时间状语；：找与现在完成相对应的时间状语；2.圈主圈主：主语与动词构成被动关系；：主语与动词构成被动关系；3.定谓定谓：确定谓动形式：确定谓动形式：have/has(not)been

16、done。一.单句语法填空 1Their new house _(decorate)for two months and they will settle in it in the near future.2Their new cars _(advertise)on the Internet for a long time.3All the athletes _(select)from millions of people all over the country in the past two months.4Great changes _(take)place in my hometown

17、 in the past ten years.5.She _(return)this book to the library already.has been decoratedhave been advertisedhave been selected have takenhas returned 二、单选题()1.Despite the previous rounds of talks，no agreement _so far by the two sides.Ahas been reached Bwas reached Cwill reach Dwill have reached()2.

18、It is the most instructive lecture that I _ since I came to this school.Aattended Bhave been attended Cam attending Dhave attended()3.In the last few years thousands of films _all over the word.Ahave produced Bhave been produced Care producing Dare being producedADB()4.Look!A new library _ in the ce

19、nter.Ais being built Bis built Cis buildingDbuilding()5.We wont start the work until all the preparations _.Aare being madeBwill be made Chave been madeDhad been madeAC了解：现在完成时和现在完成进行时的区别了解：现在完成时和现在完成进行时的区别现在完成时：现在完成时：事情发生在过去事情发生在过去,并一直持续到现在。或过去发生的动作对现在并一直持续到现在。或过去发生的动作对现在有一定影响。有一定影响。句式结构句式结构:主语主语+h

20、ave/has+done现在完成进行时：现在完成进行时：表示从过去开始一直持续到现在的动作表示从过去开始一直持续到现在的动作,强调这个动作可能会继强调这个动作可能会继续下去续下去.句式结构句式结构:have/has been doing1.-Excuse me,which movie are you waiting for?-The new Star Wars,We _ here for more than two hours.A.waited B.wait C.would be waiting D.have been waiting2.Marty _ really hard on his b

21、ook and he thinks hell have finished it by Friday.A.worked B.has been workingC.had workedD.has workedDB一、含义：1、表示动作发生在过去、表示动作发生在过去,到现在已经完成或对现在产生的影响。到现在已经完成或对现在产生的影响。2、动词、动词和被修饰主语构成被动关系。和被修饰主语构成被动关系。二、构成：肯定式：肯定式：have/has been done否定式：否定式：have/has not been done一般疑问句：一般疑问句：Have/Has+主语主语+been done?特殊疑问句：特殊疑问句：疑问词疑问词+have/has+主语主语+been done?三、解题步骤1.找时找时 2.圈主圈主 3.定谓定谓