人教版高中英语必修二单元三-语法：现在完成时的被动语态(共17张)课件.ppt

1、Unit 3 ComputersPeriod 4 （现在完成时的被动语态）1.Over time I have been changed quite a lot.2.,I have been used in offices and homes since the 1970s.3.I never forget anything I have been told!4.Since the 1970s,many new applications have been found for me.1.5.I have also been put into robots and used to make mo

2、bile phones as Task1.Presentation II.Translation 1.Two windows have been broken 2.The car has not been repaired 两个窗子被打破了。这辆汽车还没有被修好。3 Have the cars been repaired？No，they havent4 How long has her work been finished？这些汽车修好了吗？不，还没有。她的工作完成有多久了？1.构成：The Present Perfect Passive Voice （现在完成时的被动语态）现在完成时表示过去

3、发生的动作对现在造成影响。have/has been done2.现在完成时被动语态的各种句式：肯定式 have/hasbeendone The desks have been cleaned.这些桌子擦干净了。否定式 have/hasnotbeendone The desks have not been cleaned.这些桌子还没有擦干净。疑问式Have/Has主语beendone?Have the desks been cleaned?No，they havent.桌子擦干净了吗？不，还没有。特殊疑问式 疑问词have/has主语beendone?How long have the de

4、sks been cleaned？桌子擦干净有多久了？3.现在完成时被动语态的主要用法1)当动词为时，可与already或yet连用。例如：The work has already been finished.工作已完成了。Im sorry，but the letters havent been typed yet.很抱歉，这些信件还没有被打印出来。2)当动词为时，常与for或since引导的时间状语连用，或用于How long.？句型中。例如：The plan has been discussed for nearly 2 hours.这项计划已被讨论了近两个小时了。注意事项:1)现在完成时

5、的被动语态的两个助动词，即have/has和been，缺一不可。2)只有及物动词才有被动语态，不及物动词（词组）没有被动语态。3)副词的位置 often,usually,always,never,hardly,seldom等副词置于have/has和been中间。如:误 Such a man has been hardly believed.正 Such a man has hardly been believed.1Over the past ten years，this town _(hit)twice by earthquakes.答案：has been hit2Will the lec

6、ture be held at 4 oclock this afternoon?No.It_(put off)till tomorrow afternoon.答案：has been put offConsolidation.II.Choose the best answers.1.All the preparations _,and were ready to start.A.completed B.complete C.had been completed D.have been done2.-How long _ at this job?-Since 1990.A.were you emp

7、loyed B.have you been employed C.had you been employed D.will you be employed3.Betty_ injured since last Saturday.A.has been B.was C.is D.has4.-Did you move into the new house?-No.The rooms _ yet.A.were being painted B.are painting C.have not painted D.have not been painted III.用所给词的适当形式填空。1.These rooms_yet.(not,clean)2.Have these cars_?(repair)3.How many new words _ this term?(learn)have not been cleanedbeen repairedhave been learned 1.Recite the sentences from the text.2.Revise the present perfect passive voice after class,and try to grasp the different forms and their usage.Homework