定语从句中关系代词that 和which 要怎么分？

不能用关系代词Which的几种情况

1.当先行词为all, little, much, few, everything, none 等不定代词时关系代词用that而不用which. I will tell him all that you told me at the ball.
There are few books that you can read in this book store.

2.当先行词既有人又有物时,关系代词用that, 不用which.
He asked about the factories and workers that he had visited.

3.当先行词有形容词最高级修饰时,关系代词用that, 而不用which.
This is the best novel that I have ever read.
Guilin is one of the most beautiful cities that I have ever visited.

4.当先行词有序数词修饰时,关系代词用that, 不用which.
The first sight that was caught at the Great Wall has made a lasting impression on him. 5.当先行词被the only, the very, the same, the right等修饰时,关系代词用that,不用which.
That is the very thing that we can do.
It is the only book that he bought himself.

6.当先行词被all, every, any, much, little, few, no等修饰时,关系代词用that,不用which.
You can take any room that you like.