where when why which 和介词加which怎么区分

来源：学生作业帮编辑：灵鹊做题网作业帮分类：英语作业时间：2024/05/14 17:44:04

关系副词why主要用于修饰表示原因的名词（主要是the reason）,同时它在定语从句中用作原因状语.等于for which,如：
We don’t know the reason why he didn’t show up.我们不知道他为什么没有来.
She didn’t tell me the reason why she refused the offer.她没跟我讲她拒绝这项工作的原因.
when主要用于修饰表示时间的名词,同时它在定语从句中用作时间状语.等于on/in/during which,如：
There comes a time when you have to make a choice.你必须作出抉择的时候到了.
Gone are the days when they could do what they liked.他们为所欲为的日子一去不复返了.
where主要用于修饰表示地点的名词,同时它在定语从句中用作地点状语.等于in/on/at which如：
This is the village where he was born.这就是他出生的村子.
That’s the hotel where we were staying last summer.这就是我们去年夏天住的旅馆.
注意：不一定表示原因,时间或是地点的名词后就一定用关系副词或介词+which结构来引导,要看先行词在定语从句中的成分.
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再问：成分要怎么判断..
再答：你看定语从句中缺不缺少成分，即主谓宾是否具备，若具备，则在定语从句中作状语；若不具备，那看是缺少了主语还是缺少了宾语。。欢迎追问。。

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