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1、.短 暂 性 动 词 和 延 续 性 动 词用法：、它们可以用于完成时态，说明某个动作的结果还存在e.g. He has come back.The film has begun.2、这类动词不能和表示一段时间的状语连用，但在否定句中，非延续性动词也可以用表示一段时间的状语来修饰e.g. I haven t heard from Uncle Wang for a long time.We haven t seen him since 1992.She hasn t left home all her life.3、还可改用一般过去时来表达e.g. He came backa week ago
2、.4、也可用“It is一段时间since”句型来表达e.g. It is a week since he came back.非延续性动词可以转换成延续性动词，主要有以下几种：、用相应的延续性动词；buy -have,borrow - keep,put on -wear,catch/get a cold -have a cold,come/go/become -be.、转换成 be 名词 ;join the Party -be a Party member,join the army -be a soldier,go to school -be a student.、转换成 be +介词短语
3、 :go to school -be in school,join the army -be in the army.、转换成 be + adj./adv. :die- be dead,finish- beover,begin/start -be on,leave (-)be away (from),close -beclosed,open- beopen,fall asleep -be asleep.巩固练习：（同义转换，每空一词） .Li Lei joined the Party three years ago.可编辑.Li Leithe Partythree years ago.Li L
4、eithe Partythree years.three yearsLi Lei joined the Party.Three yearsLi Lei joined the Party.2.My father left Gucheng last week.MyfatherGuchenglastweek.MyfatherGuchengaweek.3.The factory opened in 1996.The factoryten years.The factorysince 1996.4. His grandfather died five years ago.Hisgrandfathersi
5、nce.His grandfatherfive years.five yearshis grandfather died.Five yearshis grandfather died.5. Mr. Wang reached Beijing five days ago.Mr.WangBeijingfivedaysago.Mr. WangBeijingfive days.6. The film began ten minutes ago.The filmfor.The filmsince.7. My father bought a new car two years ago.My father _
6、 _ a new car _ two years.My father _ _ a new car _ two years ago.8.Tom borrowed this book four days ago.Tom _ _ this book _ four days.Tom _ _ this book _ four days ago.9. Jim joined the League last yeas.Jim _ _ a League member _ a year.Jim _ _ _ the League _ last year.10. They came to China ten years ago.They _ _ _ China _ ten years.They _ _ _ China _ ten years ago.11. My son fell asleep half an hour ago.My son _ _ _ for _ _ _.My son _ _ _ since _ _ _ _.可编辑.可编辑