限制性定语从句
一、该从句可由关系代词引导：who(置代人，作主语)，whom(置代人，作宾语)，whose(置代人，作定语)；which(置代物)；that(置代人或物)。
如：
Those who want to go please sign their names here.想去的人请在这里签名。
Here is the man (whom) you’ve been looking for. 这就是你一直在找的人。
He is the man (that) you can safely depend on.他是一个你能放心信赖的人。
Do you know the man (that) she was talking to?
Do you know the man to whom she was talking?和她谈话的那个人你认识吗?
The train which (that) has just left is for Sian.
刚开的那列火车是开往西安的。
This is the question (which或that) we’ve had so much discussion about.
This is the question about which we’ve had so much discussion.
这就是我们讨论得那么多的问题。
二、该从句还可由关系副词引导：when(时间)，where(地点)，why(原因)
如：
I shall never forget the days (when) we have been working together.我将永远也不会忘记我们在一起工作的日子。
I know of a place (where) we can swim.我知道一个可以游泳的地方。
That is the reason (why) I did it.这就是我这样做的原因。
限制性定语从句的引导词有哪些
限制性定语从句的引导词(关系词)有：
一、关系代词：
who，whom，whose，that，which， as
who先行词指人，在定语从句中作主语。
whom先行词指人，在定语从句中作宾语。
whose先行词指人或事物，在定语从句中作定语。
that先行词指人，也可物，在定语从句中作主语或者宾语。
which先行词指物，在定语从句中作主语或者宾语。
as先行词指代人或事物，在定语从句中作主语或者宾语。
二、关系副词：
when，where，why
when先行词指时间，在定语从句中作时间状语。
where先行词指地点，在定语从句中作地点状语。
why先行词指原因，在定语从句中作原因状语。
例句：
1、Tom is the student who/that studies hardest in his class.
汤姆是他班里学习最努力的学生。
2、Mary is the student whose pronunciation in her class.
玛丽是她班里发音最好的学生。
This is the factory where he worked.
这是他曾经工作过的工厂。
