由Who,Whom,Whose引导的定语从句

在复合句中修饰名词或代词的从句叫定语从句。被修饰的名词或代词叫先行词。引导定语从句的关系代词有who,whom,whose,which,that等，具体用法见下表：

引导定语从句的还有：关系副词：where,when,why.准关系代词：as,but,than.复合关系代词：what,whatever,whoever,whichever.

1.由who,whom,whose引导的定语从句

1）关系代词who用作主语，用于指人；whom用作宾语，也用于指人；whose用作定语，既可指人，也可指物。例如：

This is the man who helped me.

I,who am blind,advise you to use your eyes well.

The doctor whom you are looking for is in the room.

Do you know the man whose name is Wang Yu?

Do you see the house whose windows are all broken?

2)of whom在从句中作主语时，有以下两种结构：

The eighty passengers,ten of whom(of whom ten)were British,all escaped without serious injury.