where when why which 和介词加which怎么区分

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where when why which 和介词加which怎么区分

where when why which 和介词加which怎么区分
where when why which 和介词加which怎么区分

where when why which 和介词加which怎么区分
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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