定语从句which that用法区别

　　例句：The first thing that you should do is to study.你应该做的第一件事是学习。

　　He talked about the persons and things that most impressed he.他谈论了使他印象最深的人和事。

　　3、如果先行词是代词，用that而不用which。

　　例句：Is there anything else that you'd like?还再要点其他的吗?

　　4、可以用介词加which，不能用介词加that。

　　例句：Mary had only the long nights in which to study.玛丽只有漫漫长夜可用来学习。

　　5、先行词是人，用that引导从句；不能用which。

　　例句：A person that will swear, will lie.开口就赌咒发誓的人往往在说谎。

　　6、如果他that为先行词，为了不重复用which。

　　例句：That which does not kill us makes us stronger.那些杀不死我们的东西最终只会使我们变得更加强大。