Unit 3 Discovering Useful Structures ppt课件-（2019）新人教版高中英语必修第二册 (2).pptx

1、Unit 3 The Internet【版本：新人教册别：必修二】Discovering Useful Structures目录页contents Lead-in Language points Present perfect passive voice HomeworkIIILook at the way your face has been washedLook at the way your teeth have been brushedLook at the way your shoes have been cleaned Youd better do them again. Look

2、 at the way the flowers have been plantedLook at the way the grass has been cutLook at the way the paths have been sweptI hope that youll come here again. Lead-in: Appreciate a poemLook at the way your face has been washedLook at the way your teeth have been brushedLook at the way your shoes have be

3、en cleaned Youd better do them again. Look at the way the flowers have been plantedLook at the way the grass has been cutLook at the way the paths have been sweptI hope that youll come here again. Lead in: Appreciate a poemWhats the common verb form of these sentences?Verb form: present perfect pass

4、ive voice have / has been done Present perfect passive voice1. Much has been written about the wonders of the World Wide Web.2. Peoples lives have been changed by online communities and social networks. 3. Many people have been helped by the club. 4. Jans life has been greatly improved by the Intern

5、et. Can you find the sentences with the present perfect passive voice in the passage on P28?Present perfect passive voicePresent perfect passive voice1. Much has been written about the wonders of the World Wide Web.2. Peoples lives have been changed by online communities and social networks. 3. Many

6、 people have been helped by the club. 4. Jans life has been greatly improved by the Internet. 1. People have written much about the wonders of the World Wide Web. 2. Online communities and social networks have changed peoples lives.3. The club has helped many people. 4. The Internet has greatly impr

7、oved Jans life. Which group is better? Why?Compare and Find一、现一、现在完成时的被动语态的句式：在完成时的被动语态的句式：Present perfect passive voice The 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 bee

8、n done Has his washing machine 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 Why has he 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 +主语主语+been done1.你的车已经修好了。Your car has been repaired.2.地面还没打扫干净。The floor has not been cleaned.3.那些房间粉刷了吗?Have th

9、ose rooms been painted?4.这部电影已经放映多久了？How long has this film been on?Present perfect passive voice语态用来表示主语与谓语之间的关系，它是动词的一种形式。英语中有两种语态：主动语态和被动语态。主动语态表示主语是动作的执行者，而被动语态表示主语是动作的承受者。思考：什么时候用被动语态？思考：什么时候用被动语态？ 不知道动作的执行者不知道动作的执行者 没有必要指出动作的执行者没有必要指出动作的执行者 强调动作的承受者强调动作的承受者Present perfect passive voice现在完成时的被动

10、语态的三种用法主主语和谓语是被动的关系：语和谓语是被动的关系： 动作已经完成，强调对现在造成的影响或结果动作已经完成，强调对现在造成的影响或结果 表表示动作从过去一直持续到现在，有可能还会继续进行示动作从过去一直持续到现在，有可能还会继续进行用于时间或条件状语从句用于时间或条件状语从句1动作已经完成，强调对现在造成的影响或结果动作已经完成，强调对现在造成的影响或结果His paper hasnt been handed in yet.(his paper still needs to be handed in)His paper was handed in an hour ago.(the t

11、ask was finished)I have already bought a cake for you.(you neednt buy another one)I bought a cake for you just now.(just now I did this for you)2.表示动作从过去一直持续到现在，有可能还会继续进行His computer has been repaired for two hours.他的电脑已经修了两个小时了。The valuable book has been kept in the library since it was bought last

12、 year.这本有价值的书自从去年买来就保存在这家图书馆里。表示一个被动的动作或状态开始与过去，持续到现在，并有可能持续下去，常与_ 或 _引导的时间状语连用或用于how long 句型中。1. One hundred words _(learn) since last week.2. The old temple _(built) for two years and it is still in construction.forsince have been learnt have been built3.用于时间或条件状语从句用于时间或条件状语从句Mr Feng will go home

13、to celebrate the New Years Eve as soon as his performance has been finished.冯先生的表演一结束，他就回家庆祝除夕。Conclusion :1. Dont go out to repair the roof until all of your tools _(prepare).2. You wont be allowed to go until the truth _(explain) clearly to us all.3. You are not allowed to leave unless you _(tell)

14、to . have been prepared have been explainedhave been told 三、使用现在完成时的被动语态的四个注意事项。His puzzle has been worked out .The nail has been pulled out. The girls have been taken good care of by their mothers.A new plan has been worked out by my companions.1. 短语动词是不可分割的整体，在被动语态中要保持完整性，其中短语动词是不可分割的整体，在被动语态中要保持完

15、整性，其中的介词或复次不可以省略。的介词或复次不可以省略。The job has been paid special attention.It is a comfort to see that the baby has been looked very well.toafter2.非延续性动词，如非延续性动词，如borrow, finish , begin, start, buy, marry, open, join 不能在现在完成时中与表示一段时间的状语连用。不能在现在完成时中与表示一段时间的状语连用。如要表达相应的意思，如要表达相应的意思，要更换动词或时态要更换动词或时态。He has a

16、lready borrowed the book . He hasnt borrowed the book yet.He has kept the book for a long time.当动词为非延续性动词时，可与_或_连用， 但不能与for 或since 这样引导一段时间的时间状语连用。1.The club has been founded for five years. The club was founded five years ago.2.My report has been handed in for a week. My report was handed in a week

17、 ago.alreadyyet3.现在完成时的被动语态结构：have/has been done,不可以把been 落下！工作已经被完成了。The job has been finished.这棵树已经被砍到了。The tree has been cut down.这些花已经被浇过了。The flowers have been watered. 4. 现在完成时态的标志性时间状语: already, yet, recently, lately, since then, ever, ever since, so far , up to now , for a long time , by now

18、, in recent years, in during +the past/last +时间段 over for He left his hometown in 1998 and has never been seen ever since.把下列句子改为被动语态 练习册P451.They have finished the work ahead of time. The work has been finished ahead of time by them.2.Over time, people have changed the computer a lot. Over time, th

19、e computer has been changed a lot .3.His parents have made Jack work harder than before. Jack has been made to work harder than before by his parents.4.Have they returned the book yet? Has the book been returned yet?5.Have you found ways to make waste water clean? Have the ways been found to make wa

20、ste water clean?6.Li Huas boss has praised him for his excellent work. Has him been praised for his excellent work by Li Huas boss?完成句子1 Shakespeares play Hamlet_(拍成)into at least ten different films over the past years.2. Up to now, smartphones _(使用)all over the world.3. So far this novel _(transla

21、te) into several languages.4. _this table_(book) yet?has been madehave been usedhas been translatedHas been booked翻译句子1 他们结婚10年了。They have been married for 10 years.They got married 10 years ago.2那位老人被精心照顾了10年。The old man has been taken good care of for 10 years.Present perfect passive voice拓展与补充一拓展

22、与补充一In 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 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 一般过去

23、时的被动语态表示一个被动的动作一般过去时的被动语态表示一个被动的动作发生在过发生在过去去, ,和现在无关联和现在无关联； 现在完成时的被动语态表示被动的动作或状态现在完成时的被动语态表示被动的动作或状态发生在过发生在过去去，但，但一直持续到现在或者强调过去的动作对现在有影响一直持续到现在或者强调过去的动作对现在有影响。Present perfect passive voice总结Present perfect passive voice即学即练1. Both learning sites _ (visit) by over 10,000 people since last year. 2. G

24、reat changes _ (take place) in my hometown and a lot of factories _ (set up).3. This keyboard _ (not use) for a long time. have been visitedhave taken placehave been set uphas not been usedPresent perfect passive voice4. In the past few years, I _ (inspire) to buy e-books instead of paper books. 5.

25、Till now, three films _ (show) in that small village this month. 即学即练have been inspiredhave been shownPresent perfect passive voice改错：1. The building has set up for several years. 2. The windows have been broke. 3. A terrible thing has been happened to her. 4. Jim has caught by the police. 即学即练been

26、brokenbeen Present perfect passive voice1. Weve done a lot of work 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 su

27、re that the work will be finished on time. 5. _ (eat) at the cafeteria before, Tina didnt want to eat there again. have not finishedhas been workinghas been builthas been Having eaten 高考链接Present perfect passive voice6. No agreement _ (reach) yesterday after many rounds of talks. 7. Despite the prev

28、ious rounds of talks, no agreement _ (reach) so far by the two sides. 8. I _ (show) around the Water Cube for many times since it was built. was reachedhas been reachedhave been shown Language points Language points: Important sentences (P30)Look at the way the paths have been swept. (P30)还原：还原：Look at the way (in which) (that) (不填不填) the paths have been swept.拓展翻译：拓展翻译：我建议你改变一下和父母相处的方式。我建议你改变一下和父母相处的方式。I suggest that you change the way (that) you get along with your parents.