人教版高中英语必修二课件：Unit-3-Computers---grammar课件.ppt

1、表格：被动态基本结构am/is/are donewas/were doneam/is/are being donewas/were being donewill be donewould be donehave/has been donehad been done歌诀是：被动语态歌诀是：被动语态bebe字变，过去分词跟后面。字变，过去分词跟后面。定义：现在完成时定义：现在完成时的动作或情况虽然发生在的动作或情况虽然发生在过去，但它强调的是与现在的关系，用来说过去，但它强调的是与现在的关系，用来说明现在的情况。明现在的情况。现在完成时态结构：现在完成时态结构：(have/has+过去分词过去分词

2、)现在完成时态现在完成时态The programme has been broadcasted since November.思思The five children have been educated through the game.The five families have been talked about a lot nowadays.Lead-inLead-inTheir photos have been made fun of by the netizens.现在完成时被动态结构：have /has+been+have /has+been+过去分词过去分词时间状语时间状语现在完

3、成时常与现在完成时常与already,yet already,yet recently,so far,by now,up till recently,so far,by now,up till now,since.,before.now,since.,before.等连用等连用学以致用 Many houses _ _ _during the past 10years(build)Many trees _ _ _ along the street.(plant)have been builthave been plantedThe experts have studied the plan fo

4、r three times.（变为被动态）The plan has been studied by the experts for three times 议展评This kind of food has been advertised on the newspaper for a month.否定句This kind of food didnt advertise on the newspaper for a month.(改错)hasnt been advertised Does his kind of food been advertised on the newspaper for a

5、 month.(改错)一般疑问句HasWhat has advertised on the newspaper for a month?(改错)been特殊疑问句3.注意问题。（1）副词的位置often,usually,always,never,hardly,seldom等副词置于have/has和been中间。Such a man has been hardly believed.（改错）has hardly been （2）并不是所有动词都有被动语态 _,_,_,_,cost,last等不及物动词或词组无被动语态happen,take place,appear,make 学以致用Great

6、 changes have been taken place in China since 1978.（改错）The book is belonged to me.（改错）不及物动词有哪些？趋向性动词go,come,arrive,stand,measure,rise,使役动词或make,let,have 等其他happen,take place,drop in 等（3）一些特殊动词,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 表示一段时间的状语连用。若要表达相应的意思，则需改换动词或时态。【学以

7、致用】My brother has bought this bike for almost four years.（改错）How long has this book been bought（判断正误）How long ago was this book bought（判断正误）hadFT（4）带有双宾的词，如_,_,_，_,_,_,_,_等，变为被动语态时，将其中一个宾语变为主语，其他借助介词to 或者for。【学以致用】The teacher has given twins a book.（用被动时态对句子进行改写）A book _ _ _ by the teacher _ the twi

8、ns.The twins _ _ _ a book _ the teacher.give,send,bringtake,teach,tell,write,buy,payhas been giventohas been givenby（2）带复合宾语的动词变为被动语态，只能将宾语变为主语，原来省略to 的不定式作宾补的，被动语态_ 要还原。【学以致用】My parents have made me work hard.（改为被动态）_toI have been made to work hard by my parents检1.The school board is made up of par

9、ents who _to make decisions about school affairs.A.had been elected B.had elected C.have been elected D.have elected2.-How long _ at this job?-Since 1990.A.were you employed B.have you been employedC.had you been employed D.will you be employed CB改错1.The book has not been borrowed last month.2.The new dictionaries are very useful,so they sell well and have sold out already.3.The problem has been paid enough attention since it came up at the meeting,4.Paper money has been used in over a thousand years.5.I am sorry,but the letters havent been typed already.since been to foryet谢谢谢谢2023-5-218