Unit3 Internet Discovering Useful Structures -The present perfect passive voice（ppt课件）-2022新人教版（2019）《高中英语》必修第二册.pptx

1、现在完成时的被动语态的常用句式肯定式肯定式主语主语+have/has been done+have/has been done否定式否定式主语主语+have/has not been+have/has not been donedone一般疑问式一般疑问式Have/has+Have/has+主语主语+been+been done?done?特殊疑问式特殊疑问式特殊疑问词特殊疑问词+have/has+have/has+主语主语+been done?+been done?1.A new network 1.A new network has been set has been set up.up.

2、一个新的网络已经建立起来了。一个新的网络已经建立起来了。2.To Toms disappointment,his novel 2.To Toms disappointment,his novel has not been has not been publishedpublished.让汤姆失望的是，让汤姆失望的是，他的小说还没有出版。他的小说还没有出版。3.Has3.Has hishis bike bike been repairedbeen repaired?他的自行车修好了吗他的自行车修好了吗 4.How many 4.How many residents residents have

3、been invitedhave been invited to the conference?to the conference?有多少居民受到了参会邀请？有多少居民受到了参会邀请？1.1.表示被动的动作在说话之表示被动的动作在说话之前已经发生，强调对现在的影前已经发生，强调对现在的影响，通常和响，通常和already,yet,ever,recentlyalready,yet,ever,recently等副词及时间状语，等副词及时间状语，so far,by now,up till/to now,sinceso far,by now,up till/to now,since等连用。等连用。2.

4、The database 2.The database has already been updated.has already been updated.数据库已经被更新了。数据库已经被更新了。3.3.用在用在条件句条件句中，表示将来某时已经完成的动作。中，表示将来某时已经完成的动作。YouYou shouldntshouldnt leave school leave school beforebefore your homework your homework has has been finished.been finished.在你的作业完成之前你不应该离开学校。在你的作业完成之前你不

5、应该离开学校。1.1.与一般过去时的被动语态的区别。与一般过去时的被动语态的区别。一般过去时一般过去时的被动语态所表示的的被动语态所表示的动作或状态动作或状态与现在的情况没有联系与现在的情况没有联系，而，而现在完成时现在完成时的被动语态则强调的被动语态则强调与与现在的情况有联系现在的情况有联系。1.The park 1.The park was opened was opened to the public last year.to the public last year.去年这个公园向公众开放。（说明动作发生于过去）去年这个公园向公众开放。（说明动作发生于过去）2.The 2.The ha

6、s been opened has been opened to the public.to the public.这个公园已向公众开放。（说明动作发生在过去，但对现在有影响，即这个公园已向公众开放。（说明动作发生在过去，但对现在有影响，即现在公园已经向公众开放了）现在公园已经向公众开放了）2 2.非延续性动词非延续性动词，如，如borrow,finish,begin,start,borrow,finish,begin,start,buy,marry,open,joinbuy,marry,open,join等构成的现在完成时的被动语态等构成的现在完成时的被动语态不能和不能和一段时间状语连用一段

7、时间状语连用。The work The work was finished was finished two weeks ago.two weeks ago.这项工作于两周前被完成。这项工作于两周前被完成。The work The work has been finished.has been finished.这项工作已经被完成。这项工作已经被完成。3.3.短语动词的不可分割性。短语动词的不可分割性。It is said that the problem has been It is said that the problem has been looked intolooked into.

8、据说已经调查了这个问题。据说已经调查了这个问题。4.4.带有符合宾语的动词变为被动语态时，是能将宾语变为主语，带有符合宾语的动词变为被动语态时，是能将宾语变为主语，宾补变为主补。原来省略宾补变为主补。原来省略toto的不定式作宾补时，被动语态时的不定式作宾补时，被动语态时 toto要加回去。要加回去。I have told them to take their identity cards.I have told them to take their identity cards.-They-They have been told have been told to take their id

9、entity cards.to take their identity cards.巩固练习：用现在完成时的被动语态改写句子。用现在完成时的被动语态改写句子。1.1.WeWe havehave completedcompleted allall thethe preparationspreparations forfor thethe task,task,and were ready to start.and were ready to start.All the preparations for the task All the preparations for the task have

10、been have been completed,completed,and were ready to start.and were ready to start.2.This company has produced new types of 2.This company has produced new types of puters.New types of computers New types of computers have been produced have been produced by this by this pany.3.They have interviewed

11、 several applicants for 3.They have interviewed several applicants for the job.the job.Several applicants for the job have been Several applicants for the job have been interviewed.interviewed.4.They have carried out several experiments to 4.They have carried out several experiments to test the perf

12、ormance of the new car.test the performance of the new car.Several experiments have been carried out to test Several experiments have been carried out to test the performance of the new car.the performance of the new car.5.They havent given any permission to enter 5.They havent given any permission

13、to enter the lab since it was closed.the lab since it was closed.Not any permission has been given to enter the lab Not any permission has been given to enter the lab since it was closed.since it was closed.Complete the sentences with the present perfect Complete the sentences with the present perfe

14、ct passive voice of thegiven verbspassive voice of thegiven verbs.1.Both learning sites _(visit)by over 10,000 people since last year.2.This keyboard _(not use)for a long time.3.Can you tell me what _(do)to bridge the digital divide?4.In the past year I _(inspire)to buy e-books instead of paper books.5.That app _(delete)from my smartphone already.6.It seems that more health problems _(cause)by mobile phones.have been visitedhas not been usedhas been donehave been inspiredhas been deletedhave been caused