试着读这句：Li Hua is my friend. Li Hua likes basketball. I often play basketball with Li Hua.

三个 Li Hua，读起来像卡带。

换成代词就顺了：Li Hua is my friend. He likes basketball. I often play basketball with him.

注意同一个人，位置不同用的词也不同——放在句首当主角是 He，放在 with 后面就变成 him。这一讲就是要把什么位置用什么形讲清楚。