主格：I，he, she, it,  you, they

1.I am a teacher.

2.He is a teacher.

3.You are teachers.

宾格代词：me, him（男）, her， it, you, us, them

1.He likes(第三人称加 s) me.

2.We like her.

3.I like them.

练习

1.我喜欢它。

I like it.

2.他们认识他（know）

They know him.