定语从句中“介词+which/whose+名词”结构具体怎么用?什么情况下“介词+关系词”中的介词必须在关系词前一、“介词+which+名词”结构具体怎么用?和单独用which有什么区别?如句1-1：It rained all

定语从句中“介词+which/whose+名词”结构具体怎么用?什么情况下“介词+关系词”中的介词必须在关系词前一、“介词+which+名词”结构具体怎么用?和单独用which有什么区别?如句1-1：It rained all
定语从句中“介词+which/whose+名词”结构具体怎么用?什么情况下“介词+关系词”中的介词必须在关系词前
一、“介词+which+名词”结构具体怎么用?和单独用which有什么区别?
如句1-1：It rained all night and all day,during which time the ship broke in pieces.
不是说时间状语就用when=介词+which么?那我改成句1-2对否?
句1-2：It rained all night and all day,during which the ship broke in pieces.
句2-1：I called him by the wrong name,for which mistake I should apologize.
同理改成句2-2呢?I called him by the wrong name,for which I should apologize.
二、什么情况下“介词+关系词”中的介词必须在关系词前?
句3-1：She will never forget the day on which she was married.
据说句3-1中on就必须在which前,于是有结论说介词+关系词可以等同于关系副词时,介词必须在关系词前,但也见句3-2成立：
句3-2：This is small house (which) I used to live in.
于是晕了,必有重赏,
还有些关系副词可以当介宾用，这是怎么回事？如句4-1。什么时候能当介宾？when能当介宾吗？
句4-1：She climbed up to the top of temple,from where she could see some things in the distance.

定语从句中“介词+which/whose+名词”结构具体怎么用?什么情况下“介词+关系词”中的介词必须在关系词前一、“介词+which+名词”结构具体怎么用?和单独用which有什么区别?如句1-1：It rained all
1、其实“介词+which+名词”结构是代替一些特殊的形式中的that .
例如：during which time 本来是during that time ,这里的that time指的是上文中的all day and all night.由于我们不会用during then或during that这种形式,因此也不会用during which 来引导后面的定语从句.
2、第二句中的for which mistake 本来是for that mistake ,由于这并不是一个固定结构,可以用for which来改写,这里的which 指代整个上一句.
3、介词的位置
A.当介词与前面的关系代词密切,并且与后面的动词不能有意义的动词短语时,必须将介词置于关系代词前.
如：你的3-1句型.因为如果on在句尾,就成了be married on,没人看得懂.
B.而3－2中,我们有live in the house 这样的短语,因此放在前面或后面都行.不会影响别人理解.
C.还有一种介词与后面的动词构成动词短语,分开后会影响原来的意思,因此必须放在结尾, 不能放在关系代词前的,
例如：She is the girl who we are looking for.
此时,不能将for 放在前面,变成for whom,
因为你会发现句子变成了：She is the girl for whom we are looking. 谁也看不懂了.
4.from where 指代的是from there意指从那儿,when 也可以作介宾,如since then会变成since when. 意指从那里起, 例：she graduated from Peking University in 2004, since when she has lived in the USA.
希望能对你有所帮助,有不懂的还可以再问我哦!祝你学习进步