1、学习目标学习目标(1)1. Identify and summarize the form and the functions of the present perfect passive voice;2. Compare the present perfect passive voice with the active, and change the active form into the passive form;3. Apply the present perfect passive voice into use1. Much has been written about the wo
2、nders of the World Wide Web.问题导学问题导学1(1) Observe and translate the following sentences, and try to find something in common from these sentences.2. Peoples lives have been changed by online communities and social networks.问题导学问题导学1(3)3. Many people have been helped by the club.已经被书写已经被书写已经被改变已经被改变ha
3、ve/ has been done 已经被做已经被做表示表示 “某人某人/某事某事/某物已经被某物已经被”已经被帮助已经被帮助has been written have been changedhave been helped 问题导学问题导学1(1)点拨精讲点拨精讲1(3) Observe and translate the following sentences, and find the differences among “have/has done” and “have/has been done”.have/ has donehave/ has been done 主语和动作之间是
4、主语和动作之间是主动主动关系关系主语和动作之间是主语和动作之间是被动被动关系关系1. A woman has started a small online company with two friends.1. A small online company has been started by a woman with two friends.2. The internet has made our lives more convenient.2. Our lives has been made more convenient by the Internet.已经开始已经开始已经被开始已经被
5、开始已经使已经使已经被使已经被使has started has been startedhas made has been made即学即练即学即练1. I have asked her to help you.将下列主动句变为被动句将下列主动句变为被动句2. They have found a good place to build a library in the city.3. We have planted many trees on the hill in the last two years.She has been asked by me to help you. A good
6、place has been found by them to build a library in the city. Many trees have been planted by us on the hill in the last two years.问题导学问题导学2(4) The letter (post) already.Observe the following sentences and try to fill in the blanks.has been posted Many houses (build) for the poor so far.have been bui
7、lt点拨精讲点拨精讲2(4)用法用法1:被动动作发生在过去被动动作发生在过去,已经完成已经完成, 对现在造成影响对现在造成影响 或产生结果。或产生结果。(already, yet, so far, by now)问题导学问题导学2(4) The machine (repair) for two hours but it still doesnt work.has been repaired Paper money (use) for over 50 years.has been used点拨精讲点拨精讲2(4)用法用法2:被动动作发生在过去被动动作发生在过去,持续到现在持续到现在,并有可能继续
8、并有可能继续 持续下去。持续下去。(for+一段时间一段时间; since) Everyone will feel extremely delighted if he_(admit) to South China Normal University. You shouldnt leave school before your homework_(finish).has been admittedhas been finished用法用法3:在时间在时间/条件状语从句中表示可能条件状语从句中表示可能 还没有发生的被动动作。还没有发生的被动动作。点拨精讲点拨精讲2(10)1. The machin
9、e has been repaired already.2. The machine is being repaired now. 3. The machine was repaired yesterday.说明动作发生在过去说明动作发生在过去,对现在有影响对现在有影响, “现在修好了现在修好了”说明动作正在进行说明动作正在进行只说明动作发生在过去只说明动作发生在过去4. The baby has been taken good care of.4. The baby has been taken good care.Attention: 在被动结构中在被动结构中, 动词短语的介词动词短语的介
10、词或副词不可去掉或副词不可去掉5. Great changes have been taken place since 1978.5. Great changes have taken place since 1978.Attention: 不及物动词不及物动词或词组无被动或词组无被动即学即练即学即练1.More than 5000 used bikes (collect) since the two brothers set up the organization.2. He (employ) at this job since 1990.3. His novel (translate) i
11、nto 25 languages.have been collectedhas been employedhas been translated课堂小结课堂小结(1)现在现在完成完成时的时的被动被动语态语态含义含义结构结构表示过去发生的被动动作现在已经完表示过去发生的被动动作现在已经完 成或仍将持续成或仍将持续, 强调对现在的影响强调对现在的影响have/has been done形式形式肯定式肯定式否定式否定式疑问式疑问式have/has been donehave/has not been doneHave/Has+主语+been done?特殊疑问词+have/has+主语+been d
12、one?用法用法表示已经完成的被动动作表示已经完成的被动动作表示开始于过去并可能持续下去的被动动作表示开始于过去并可能持续下去的被动动作在时间状从在时间状从,条件状从中条件状从中,表示还未发生的被动动作表示还未发生的被动动作注意注意事项事项区分区分have/has been done/ be being done/ be done不及物动词或词组无被动不及物动词或词组无被动当堂检测当堂检测(15) Great changes1._(take) place in my hometown in the past few decades. The public facilities(设施) 2._(
13、improve) so far. Many 3._(road) have been widen. Besides, More attention has been given to the 4._(environment) protection, so many trees and flowers 5._(plant) now. The water in the rivers as well as the air 6._(become) clean again. 7._ many people say, 8._ seems that we are now living in a “big park”. 9._, things can get bad if we dont appreciate 10._we have now.have takenhave been improvedroadsenvironmentalare being plantedhas becomeAs It However what
