these those they the there this that this 怎么用

最简单的字典或最简单的语法书完全可以解决你的问题.下列例子或许有帮助.

These books are mine.
Those books are yours.
They are all English books.
The books are very useful for our English learning.
There are some other books on the desk.
This book belongs to Song Jiang.
That book belongs to Chao Gai.
This book belongs to Lin Chong.