1、Unit 3 现在完成时被动语态现在完成时被动语态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 Wide Web.4. Much has been w
2、ritten about the wonders of the World Wide Web.被动被动主动主动主动主动被动被动 现在完成时现在完成时谓语谓语结构结构 主动主动被动被动have/has donehave/has been done .已经被已经被.（一）表（一）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等连用等连用。The dirty clothes have already been cleaned.即学即练：即学即练： The bike_(not repair) yet. I _ already_(introduce
3、) to Mr. Smith.has not been repaired havebeen introduced 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. （二）找出表示时间状语的词语并总结用法。（二）找出表示时间状语的
4、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+时间时间段段，since +过去的时间点过去的时间点，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) by Mr. Brown for two years.2. His Chinese_(improve) a lot since he came to China.3. Rowlings nov
5、els_(translate) into many foreign languages so far.have been taught has been improvedhave been translated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：找与现在完成相对应的时间状语时间状语；2.圈圈主主：主语与动词构成：主语与动词构成被动被动关系关系；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 1. Many new buildings_ (build) in Tangshan
6、 since 1976. 2. The bikes in my family _(use) for 30 years. 3. Despite the previous talks, no agreement_ (reach) so far. 4. The water in the river_(pollute), which make it smell terrible. 5. _the windows _(clean)?have been builthave been usedhas been polluted been cleanedhas been reachedHave 一.单句语法填
7、空 6. How many shopping centers _ (build) in this city. 7. The museum _(finish) so far, so it is still under construction. 8. It is reported that the murderer _ (arrest).have been builthasnt been finishedhas been arrested二、把下面句子改为被动语态二、把下面句子改为被动语态.Theyve built a kind of new PC with more functions.A k
8、ind of new PC has been built with more functions.1We have completed all the preparations for the task, and were ready to start.2This company has produced new types of computers.All the preparations for the task have been completedand were ready to start.New types of computers have been produced by t
9、his company.二、把下面句子改为被动语态二、把下面句子改为被动语态.3They have interviewed several applicants for the job.4They have carried out several experiments to test the performance of the new car.5.They havent given any permission to enter the lab since it was closed.Several applicants for the job have been interviewed.
10、 Several experiments have been carried out to test the performance of the new car.Not any permission has been given to them to enter the lab since it was closed.二、把下面句子改为被动语态二、把下面句子改为被动语态.6. They have developed some medicine to cure the disease.7.Theyve offered me a good position in the company.Some
11、 medicine has been developed by them to cure the disease. I ve been offered a good position in the company./ A good position in the company has been offered to me. 一、含义：1、表示动作发生在过去，到现在、表示动作发生在过去，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、动词和主语构成被动关系。和主语构成被动关系。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
