第1个回答 推荐于2017-09-14
定语从句: 在复合句中修饰名词或代词的句子在复合句中充当定语，所以叫作定语从句。
先行词： 定语从句所修饰的名词或代词。
关系词： 引导定语从句的词，分为关系代词（who,whom,that,which,whose）和关系副词(where,when,why,)。
一 定语从句的关系代词 Which的用法: 若先行词指物则代替先行词在定语从句中充当主语或宾语.
This is the pen which was given by my friend.
先行词 指物代替先行词在定语从句中充当主语
This is the pen which my friend gave to me.
先行词 指物代替先行词在定语从句中充当宾语
二 定语从句的关系代词 Who的用法: 若先行词指人则代替先行词在定语从句中充当主语或宾语(如果前面带介词则必须用whom)
The man who is wearing a white suit is my brother.
先行词 指人代替先行词在定语从句中充当主语
The man who\whom he wanted to see last week is in Shanghai.本回答被提问者采纳