(2021新人教版)高中英语必修第二册Unit 3现在完成时被动语态ppt课件.pptx

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1、Unit 3 现在完成时被动语态现在完成时被动语态 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. 表表示说话时正在进行的被动动作;示说话时正在进行的被动动作; 2. 表表示现阶段正在进行的被动动作;示现阶段正在进行的被动动作; 3. 表表示一种示一种经常性经常性的被动行为,带有感情色的被动行为,带有感情色彩。彩。 is/am/are being done is/am/are not being done 1The alarming report _now. It will be finished

2、this afternoon. A. is writing B. being written C. is being written D. has been written 2Still,in the wild forests,animals _ for profit. 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

3、 been killing D. are being killed C 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 找出找出下面句子的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 life 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

4、 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 active passive have/has done have/has been done 一、观察例句,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?

5、(4)Has his bike been repaired? 现在现在完成完成时时的被动语态的被动语态 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 been done 主语主语+have / has not been done Have / 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

6、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 put out the big fire. 3Tom hasnt sold out all the magazines. The printer has just been connected to the computer. T

7、he big fire has been put out. All the magazines have not been sold out. 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 cl

8、othes 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从过去开去开始一始一直持续到现在直持续到现在,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。 即即学即练:学即练: 1. This class_(teach

9、) by Mr. Brown for two years. 2. His Chinese_(improve) a lot since he came to China. 3. Rowlings novels_(translate) into many foreign languages so far. have been taught has been improved have been translated (二)表(二)表某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

10、用。 即学即练:即学即练: The bike_(not repair) yet. I _ already_(introduce) to Mr. Smith. 注注意:意:有些动词没有被动语态有些动词没有被动语态, 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

11、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.圈圈主主:主语与动词构成被动关系:主语与动词构成被动关系; 3.定定谓谓:确定谓动形式:确定谓动形式:have/ has (not) been 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 athlete

12、s _ (select) from millions of people all over the country in the past two months. 4Great changes _ (take)place in my hometown in the past ten years. 5. She _ (return) this book to the library already. has been decorated have been advertised have been selected have taken has returned 二、单选题 ()1.Despit

13、e the previous rounds of talks,no agreement _so far by the two sides. Ahas been reached Bwas reached Cwill reach Dwill have reached ()2.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 thousa

14、nds of films _all over the word. Ahave producedBhave been produced Care producing Dare being produced A D B ()4.Look! A new library _ in the center. Ais being builtBis built Cis buildingDbuilding ()5.We wont start the work until all the preparations _. Aare being made Bwill be made Chave been made D

15、had been made A C 了解:现了解:现在完成时和现在完成进行时的区别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并一直持续到现在。或过去发生的动作对现 在有一定影响。在有一定影响。 句式结构句式结构: 主语主语+ have/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 doing 1. -Excuse me, wh

16、ich 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 waiting 2.Marty _ really hard on his book and he thinks hell have finished it by Friday. A. worked B. has been working C. had workedD. has worked D B 一、含义: 1、表示动作发生在过去、表示动作发生在过去, 到现在到现在已经已经完成或对现在产生的影响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

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