介词加关系代词的规则
介词加关系代词的介词是从哪里来的？
介词加关系代词介词遵循的原则？
介词加关系代词是由于定语从句中的动词是不及物动词，和引导词不可以联接，因此在引导词前边必须再加上介词，有时候和从句中专有名词不可以联接等，这一介词也要放在从句中。比如：The temple of which the window is broken has been destroyed by some red guards.
介词加关系代词介词遵循的原则？
介词和代词一起用时，介词放置代词前，如by oneself, after all
在句子成分中，介词 代词 一般可以作状语
We have twenty students in the club in all.
My mother often tells me to do things by myself.
Don#39t worry about him. After all , he has been an adult.
There are twenty volunteers in all talking part in the hand -in -hand activity.
介词加关系代词用法？
在英语的定语从句中，介词加关系代词等同于一个关系副词，起一个关系副词的功效。
词组：
1.This is the house where Tom lived many years ago.
这也是很多年前汤母住过的房屋。
where是关系副词，可换为 in which去引导。
This is the house in which Tom lived many years ago.
2.This is the farm where he worked.
这也是他工作中完的大农场。
where是关系副词，可换为 in which去引导。
This is the farm on which he worked.
3.This is the reason why he didn#39t come to school.
这也是他没来读书的缘故。
why是关系副词，可换为 for which去引导。
This is the reason for which he didn#39t come to school.