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。
%i,kN,@ ~K v0①When 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。
`/th!u-TZR.g0②When 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。
%g~ ll5t02.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。
8K4S)S8Cj0①When /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。 中国英语博客基地(English Blogs-英语麦当劳博客空间),{LTuqU
②When /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。
l)AD$?+CePK*d+V;C03.在将来时从句中,常用when,且从句须用一般时代替将来时。 中国英语博客基地(English Blogs-英语麦当劳博客空间)8H}(p#l v7A
①You shall borrow the book when I have finished reading it.在我读完这本书后,你可以借阅。
#a7x[t^#es0②When the manager comes here for a visit next week,Ill talk with him about this.下周,经理来这参观时,我会和他谈谈此事。
T%m6[OB(h$WZi0中国英语博客基地(English Blogs-英语麦当劳博客空间)*Ahc:\p
、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) E!\ W1y t%IV
sb.had hardly(=scarcely) done sth.when...=Hardly / Scarcely had sb.done sth.when... 中国英语博客基地(English Blogs-英语麦当劳博客空间)JL#D4{(u-} D(j
①I 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。
fIw~ I tD%],]{,b0②I 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。中国英语博客基地(English Blogs-英语麦当劳博客空间)PlT O)XwGy k



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