人教版高中英语必修二unitcomputersgrammar课件.ppt--(课件中不含音视频)
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1、The Present Perfect Passive Voice revisionWill/shall +be +V过去分词过去分词构成形式构成形式:一般将来时被动语态一般将来时被动语态(Future Passive Voice)shall 用于第一人称用于第一人称:I/we,will 用于任何人用于任何人称称be going to be+V过去分词过去分词be to be+V过去分词过去分词否定句否定句:一般疑问句一般疑问句:在在will/shall后后+not把把will/shall 提前提前The students of class one will clean the playgro
2、und.The playground will be cleaned by the students of class one.We are going to hold a meeting on Saturday afternoon.A meeting is going to be held(by us)on Saturday afternoon.The twins are to repair the machine tomorrow.The machine is to be repaired(by the twins)tomorrow.The host will give the winne
3、r a computer as the prize.获胜者将被赠予一台电脑作为奖励获胜者将被赠予一台电脑作为奖励.The winner will be given a computer as the prize(by the host).一台电脑将被赠给获胜者作为奖励一台电脑将被赠给获胜者作为奖励.A computer will be given(by the host)to the winner as the prize.Are you familiar with these computers?Can you call them?A wrist-worn PC A wrist-worn P
4、C has been invented has been invented recently.recently.A pen-like computer A pen-like computer has has already already been developed.been developed.A calculating machine;replaceThe buildings;destroy;earthquakeA calculating machine has been replaced with the laptop.The buildings have been destroyed
5、 in an earthquake.1.1.A calculating machine A calculating machine has been replacedhas been replaced with with the laptop.the laptop.2.2.The buildings The buildings have been destroyedhave been destroyed in an in an earthquake.earthquake.3.3.The sports meeting The sports meeting hashas already alrea
6、dy been heldbeen held in in our school.our school.Do the underlined parts have something in common?Discovering:has/have been done现在完成时现在完成时被动语态被动语态现在完成时的被动语态现在完成时的被动语态the Present Perfect Passive Voice现在完成时的被动语态的用法现在完成时的被动语态的用法 1.表示一个被动的表示一个被动的动作动作发生在发生在说话之前说话之前,强调对强调对现在造成的现在造成的影响和结果影响和结果.The door ha
7、s been locked.2.表示一个被动的动作或状态开始于过去表示一个被动的动作或状态开始于过去,持续持续到现在到现在,并可能持续下去并可能持续下去,常与常与for 或或since引导引导的时间状语连用的时间状语连用,或用于或用于How long.?句型中句型中.The important problem has been discussed for nearly two weeks.How long has the machine been used?现在完成时的标志现在完成时的标志:recently/already/yet for+一段时间一段时间/since+时间点时间点句型句型He
8、 has been sent to study the new technology in the company.否定句否定句:He has not been sent to study the new technology in the company.一般疑问句一般疑问句:Has he been sent to study the new technology in the company?特殊疑问句特殊疑问句:Where has he been sent to study the new technology?在在have/has 后加后加nothave/has 提前提前疑问词疑问词+
9、have(has)+主语主语+been+V过去分词过去分词.+.?Great changes _ in the city,and a lot of factories _.A.have been taken place ;have been set upB.have taken place;have been set upC.have taken place;have set upD.were taken place;were set upB1.They not have finished the homework which should be finished yesterday.2.Do
10、es the new program have been developed for the robot?3.How many have teachers been interviewed for the job?Has the new programhave notteachers havecorrect mistakes二、现在完成时的被动语态应注意的几个问题二、现在完成时的被动语态应注意的几个问题 1.请注意现在完成时的被动语态的两个助动词请注意现在完成时的被动语态的两个助动词,即即have/has和和been,两者缺一不可。两者缺一不可。2.请注意与请注意与一般过去时的被动语态一般过去
11、时的被动语态的区别。一般过去的区别。一般过去时的被动语态所表示的动作或状态与现在的情况时的被动语态所表示的动作或状态与现在的情况没有没有联系联系,而现在完成时的被动语态则而现在完成时的被动语态则强调与现在情况的强调与现在情况的联系联系.The bridge was built last year.这桥是去年建成的。The bridge has been built.这桥已经建好了。三、三、巩固练习巩固练习 1.How many times_ not to play with fire?Im sorry.Ill never do that again.A.do you tell B.had yo
12、u told C.are you told D.have you been told 2.The fire _ to the fifth floor._ all the people _?A.has got;Have;been saved B.has been got;Have;saved C.has got;Do;save D.has got;Have;saved3.Do you know the thief _ by the police?A.has caught B.has been catchingC.was caught D.has been caught Homework:准备月考
13、准备月考3.请注意一些特殊动词请注意一些特殊动词,如如borrow,finish,begin,buy,start,return,marry,open,join等构成的现在完成时的被动语态不能与等构成的现在完成时的被动语态不能与表示一段时间的状语连用。若要表达相应表示一段时间的状语连用。若要表达相应的意思的意思,则需改换动词或时态。如则需改换动词或时态。如:误 How long has this book been bought?正 How long ago was this book bought?但这类动词的否定式可表示动作的持续过程但这类动词的否定式可表示动作的持续过程,具有连续性具有连续
14、性,因而可与因而可与since或或for引导的时引导的时间状语连用。如间状语连用。如:No books have been bought since last week.自上周以来,没有人来买过书。名师课堂教学人教版高中英语必修二unitcomputersgrammarPPT课件(完整版PPT)名师课堂教学人教版高中英语必修二unitcomputersgrammarPPT课件(完整版PPT)4.This is one of the happiest days _ spent in my life.A.that have ever been B.that have never beenC.whi
15、ch was ever D.which we have never5.When and where to go for the on-salary holiday_ yet.A.are not decided B.have not been decided C.is not being decided D.has not been decided名师课堂教学人教版高中英语必修二unitcomputersgrammarPPT课件(完整版PPT)名师课堂教学人教版高中英语必修二unitcomputersgrammarPPT课件(完整版PPT)1.-How long _ at this job?-S
16、ince 1990.A.were you employed B.have you been employed C.had you been employed D.will you be employed 2.When and where to go for the on-salary holiday _yet.(2003 上海春季上海春季)A.are not decided B.have not been decided C.is not being decided D.has not been decided3.All the preparations for the task_,and w
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