人教版必修2-unit3-Computers-P4-Grammar-(共46张)课件

1、The Present Perfect Passive VoiceUnit 3 GrammarThe Present Perfect Passive Vo初中课本给大家介绍了被动语态的构成和用法、一般现在时和一般过去时的被动语态的构成，以及含有情态动词的被动语态，上一个单元我们又学习了将来时的被动语态，这里我们将继续介绍有关被动语态的知识。初中课本给大家介绍了被动语态的构成和用法、一般现在时和一般过ObjectiveTo learn and use the present perfect passive voice.ObjectiveTo learn and use the 语法讲解建议采用归

2、纳法，如尽可能多的呈现一些相关例句，或可让学生从已学课文中找相应例句，引导学生试着从所观察到的语言现象中总结出语言规则和语法规律。语法讲解建议采用归纳法，如尽可能多的呈现一些相关例句，或可让Look at the following sentences.1. An opinion is what someone believes is true but has not been proved. (必修2)2. So even the olive wreath has been replaced! (必修2)3. The fantastic modern buildings have been

3、designed by Kurt Gunter. (新概 念2 L37) Look at the following sentence1. Over time I have been changed quite a lot.2. First as a PC (personal computer) and then as a laptop, I have been used in offices and homes since the 1970s.3. Over time my memory has developed so much that, like an elephant, I neve

4、r forget anything I have been told! Sentences from this unit:1. Over time I have been chang4. Since the 1970s many new applications have been found for me.5. I have also been put into robots and used to make mobile phones as well as help with medical operations.6. I have even been put into space roc

5、kets and sent to explore the Moon and Mars.4. Since the 1970s many new Guessing Gameto test your sense of observationto test your ability of short-term memory to test your ability to highlight the language pointsGuessGuessing Gameto test your sens1. An opinion is what someone believes is true but _.

6、 2. So even the olive wreath _ _! 3. The fantastic modern buildings _ _ by Kurt Gunter. 4. Over time I _ quite a lot.5. First as a PC (personal computer) and then as a laptop, I _ in offices and homes since the 1970s.has not been proved has been replaced have been designedhave been changedhave been

7、used1. An opinion is what someone 6. Over time my memory has developed so much that, like an elephant, I never forget anything I _!7. Since the 1970s many new applications _ for me.8. I _ also _ into robots and _ to make mobile phones as well as help with medical operations.9. I _ even _ into space

8、rockets and _ to explore the Moon and Mars.have been toldhave been found have been putused have been put sent 6. Over time my memory has dev1. Paper money _ for over a thousand years. A. used B. has been used C. has used D. is using2. _ the letter _ to Mr. Black? No. Its still on the desk. A. Has; g

9、iven B. Will; be given C. Was; given D. Has; been given1. Paper money _ for over3. Great changes _ in my hometown and a lot of factories _. A. have taken place; have been set up B. have been taken place; are being set up C. are taken place; had been set up D. had taken place; will be set up3. Great

10、changes _ in my 以上我们已经通过归纳总结和练习对本课的语法内容有了一定的了解，下面就让我们根据之前练习的考察情况进一步选择讲解该语法项的重难点。以上我们已经通过归纳总结和练习对本课的语法内容有了一定的了解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。 现在完成时的被动语态Understanding the structure of the present perfect passive voiceThe structure of the present perfect passive voice is: have / has + been + ed现

11、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 主动语态即主语为动作的执行者；被动语态即主语为动作的承受者。现在完成时的被动语态同它的主动语态一样，强调过去的动作对现在造成的影响或结果，但主语为动作的承受者，表示“已经被”。The new school has been set up. 新学校已经建成了。 主动语态即主语为动作的执行者；被2. 现在完成时被动语态的肯定式为：have / has + been + doneThe experiment has been done successfully. 这个实验做得很成功。现在完成时被动语态的否定式为：have / has + n

12、ot + been + doneToms novel has not been published. 汤姆的小说还没有被出版。2. 现在完成时被动语态的肯定式为：现在完成时被动语态的一般疑问句需将have / has提到主语的前面。Has his bike been repaired? 他的自行车修好了吗？现在完成时被动语态的特殊疑问句为：疑问词 + have / has + been + doneWho has been invited? 谁受到了邀请？现在完成时被动语态的一般疑问句需将have / has提到主现在完成时的被动语态表达以下两个概念：1. 说话时已经完成的动作或出现的结果。2

13、. 主语是行为动作的承受者。现在完成时的被动语态由have/has been+ v-ed构成，其中v-ed为过去分词，表示被动。I have been told about it many times.The bridge has just been built.现在完成时的被动语态表达以下两个在使用现在完成时的被动语态时要注意以下两点：1. 过去分词前有两个助动词： have / has和been。2. 必须表示被动。 在使用现在完成时的被动语态时要注意: 副词的位置often, usually, always, never, hardly, seldom等副词置于have / has和be

14、en中间。如:误 Such a man has been hardly believed.正 Such a man has hardly been believed.注意: 副词的位置2. 并不是所有动词都有被动语态 happen, take place, break out, belong 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. 并不是所有

15、动词都有被动语态(2) open, break, drop等不强调动作发出 者时常用主动语态。3. 短语动词不可分割或省略其中的介词 或副词。如： The patients have been taken good care of.(2) open, break, drop等不强调动作发出3(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(1) 把主动语态的宾语变为被动语态的主语。主动语态变被动语(3) 把主动语态中的主语放在介词by

16、之 后作宾语，将主格改为宾格。 All the people laughed at him. He was laughed at by all the people. They make the bikes in the factory. The bikes are made by them in the factory.(3) 把主动语态中的主语放在介词by之(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 giv

17、en (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.(4) 双宾语动词变被动语态可将其中的一(5) 带复合宾语的(1)误Many new buildings been built since 1980. 正Many new buildings have been built since 1980.分析: 谓语部分结构不全, 时态部分不完整。试分析：(1)误Many new buildings b

18、een (2)误Something bad has been happened to him. 正Something bad has happened to him.分析: 被动语态误用。happen为不及物动词，不及物动词没有被动语态。(3)误I have introduced to Mr. Smith. 正I have been introduced to Mr. Smith (by Mr. Wang).分析: introduce为及物动词，I是introduce的承受者。(2)误Something bad has been (4)误The door has been opened of

19、itself. 正The door has opened of itself.分析: 有些动词如open，break，drop等既可以作及物动词，又可以作不及物动词，若不强调谁是动作的发出者，我们通常用主动语态。of itself意思是“自动地”，因此，此句不可用被动语态。(4)误The door has been openedReview现在完成时的被动语态肯定结构：have / has + been + done否定结构：have / has + not + been + doneReview现在完成时的被动语态Individual activityIndividual activity

20、1. 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 decidedQuiz I: Multiple choice. 1. When and where to go for2. Every possible means _ to prevent the air pollution, but the sky is still not clear. A. is used

21、B. are used C. has been used D. have been used 2. Every possible means _3. All the preparations for the task _ and were ready to start. A. completed B. complete C. had been completed D. have been completed 3. All the preparations for th4. _ the sports meet might be put off. Yes, it all depends on th

22、e weather. A. Ive been told B. Ive told C. Im told D. I told4. _ the sports meet mi5. I got caught in the rain and my suit _. A. has ruined B. had ruined C. has been ruined D. had been ruined5. I got caught in the rain an6. In recent years many football clubs _ as business to make a profit. A. have

23、run B. have been run C. had been run D. will run6. In recent years many footba7. I like these English songs and they _ many times on the radio. A. taught B. have taught C. are taught D. have been taught 7. I like these English songs 8. - Why does the Lake smell terrible? - Because large quantities o

24、f water _. A. have polluted B. is being polluted C. has been polluted D. have been polluted 8. - Why does the Lake smell9. Every year a flood of farmers arrive in Shenzhen for the money-making jobs they _ before leaving their hometowns. A. promised B. were promised C. have promised D. have been prom

25、ised9. Every year a flood of farme10. In the last few years thousands of films _ all over the word. A. have produced B. have been produced C. are producing D. are being produced 10. In the last few years thou11. Shakespeares play Hamlet _ into at least ten different films over the past years. A. had

26、 been made B. was made C. has been made D. would be made 11. Shakespeares play Hamlet Quiz II: Turn the following into the passive voice.1. We have planted some trees around the lake.2. My father has locked the door.3. Someone has turned off the light. Some trees have been planted around the lake.The light has been turned off.The door has been locked.Quiz II: Turn the foll