现完被动语态.ppt

* 现 在 完 成 时 Over time I have been changed quite a lot. I have been used in offices and homes since the 1970s. Many new applications have been found for me. Unit 3 Computers Grammar The Present Perfect Passive Voice 现在完成时的被动语态 现 在 完 成 时 掌握现在完成时的被动语态的基本结构 能够区别现在完成时被动语态与一般过去时被动语态 掌握双宾语和复合宾语的现在完成时的被动语态 牢记无被动语态的动词或动词词组 现在完成时的主动语态： 现在完成时的被动语态：have/has done been have/has done How? *They have read 20 books. ------- 20 books ______ have been read by them. 方法 宾变主, 主变宾, by短语后面跟。 谓语动词变被动, be后“过分”来使用。 *I have bought a car . A car has been bought (by me) 1.have been enriched by 2.has been repaired 3.has been finished 4.have been sent up into 5.have been made 6.have been warned 7.has been tried 8.has been put off 主 动 变 被 动 1.何时用现在完成时的被动语态？ 2.现在完成时的被动语态与一般过去时的被动语态的区别？ 3.现在完成时的时间状语是哪些？ 4.哪些动词不可与for或since短语连用？ 5.双宾语的被动语态怎么变？ 6.带复合宾语的动词的被动语态怎么变？ 7.动词短语变被动应注意什么？ 8.哪些动词或动词短语无被动语态？ 1.何时用现在完成时的被动语态？ 2.现在完成时的被动语态与一般过去时的被动语态的区别？ 1.对现在产生结果或影响 2.过去发生、一直延续到现在并可能持续下去的被动动作 一般过去时：动作发生在过去，对现在无影响 现在完成时：动作发生在过去，侧重对现在的结果或影响 3.现在完成时的时间状语是哪些？ 可用：already、yet、just、often、recently、in the past few years 不可与yesterday、three days ago、in 1999等连用 4.哪些动词不可与for或since短语连用？ 短暂动词：finish、buy、start、begin、die等 5.双宾语的被动语态怎么变？ 可将直接宾语或间接宾语变为主语 I have given him the book. has been given the book. He has been given him. The book to 6.带复合宾语的动词的被动语态怎么变？ 复合宾语：宾语 +宾语补足语 宾语变为主语,宾补照抄即可 主动语态时为省略to的不定时，变为被动语态时to要还原 eg. make sb do sth→ sb be made to do sth I have made him work hard. He has been made to work hard. 7.动词短语变被动应注意什么？ 动词之后的介词或副词不可遗漏 主动：He has referred to the book. 被动：The book has been referred to 8.哪些动词或动词短语无被动语态？ arrive、die、become、disappear、 break out、belong to、 take place、happen B D B D B D B C D D *