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when while as 的用法

2008-03-05 00:38:21 / 个人分类:词法

1.从句动作在主句动作前发生,只用 when。 中国英语博客基地(English Blogs-英语麦当劳博客空间)m~e~9m\ i
①When he had finished his homework,he took a short rest.(finished先发生)当他完成作业后,他休息了一会儿。 中国英语博客基地(English Blogs-英语麦当劳博客空间)+g:QY1Y5U c6S/E
②When I got to the airport,the guests had left.(got to后发生)当我赶到飞机场时,客人们已经离开了。
`6WNy+hGu7o02.从句动作和主句动作同时发生,且从句动作为延续性动词时,when,while,as都可使用。
2Q.{Y(k;m0①When /While /As we were dancing,a stranger came in.(dance为延续性动词)当我们跳舞时,一位陌生人走了进来。
9o*h p!B j'm)O o0②When /While /As she was making a phonecall,I was writing a letter.(make为延续性动词)当她在打电话时,我正在写信。中国英语博客基地(English Blogs-英语麦当劳博客空间)9s#pF*?L
3.在将来时从句中,常用when,且从句须用一般时代替将来时。
G(V.FU"h2Bg0①You shall borrow the book when I have finished reading it.在我读完这本书后,你可以借阅。 中国英语博客基地(English Blogs-英语麦当劳博客空间)Sb*~3U S#IM4g2m B
②When the manager comes here for a visit next week,Ill talk with him about this.下周,经理来这参观时,我会和他谈谈此事。 中国英语博客基地(English Blogs-英语麦当劳博客空间)+{5}-Cn U,d)Zh
中国英语博客基地(English Blogs-英语麦当劳博客空间) {:w%\3V+[
、when用于表示“一……就……”的句型中(指过去的事情)。 中国英语博客基地(English Blogs-英语麦当劳博客空间)I3Ullq3VC
sb.had hardly(=scarcely) done sth.when...=Hardly / Scarcely had sb.done sth.when...
SylY#s1t0①I had hardly /scarcely closed my eyes when someone knocked at the door.=Hardly / Scarcely had I closed my eyes when someone knocked at the door.我刚一闭上眼,就有人在敲门了。
%T2O0hU0x0②I had hardly /scarcely entered my room when the telephone rang.=Hardly /Scarcely had I entered my room when the telephone rang.我刚一走进房门,电话就响了。
:jrI7Jm!^3?7I0



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