his有两种词性：

1、形容词性物主代词；

作为形容词物主代词时，his不能单独使用，后面必须加上名词如his book。

例：His book is over there.（他的书在这儿）。

2、名词性物主代词；

作为名词性物主代词时，his 又必须单独使用，后面不能加名词。但是his就表示他的物品。

扩展资料

形容词性物主代词：my your his her it our your their。

名词性物主代词：mine yours his hers its ours yours theirs。

his的一些固定用法：

1.beard the lion in his den 入虎穴取子。

2.frighten someone out of his wits 吓得某人惊惶失措...。

3.give the devil his due 即使对不喜欢的人也要...。

4.bring someone to his knees 迫使某人屈膝、屈服...。

5.put someone on his good behavior 规劝某人放规矩些。

6.send someone about his business 叫某人别管闲事...。

7.relieve someone of his cash 偷去某人的钱...。