改错：1.This is my father.He name is John Smith.2.Alice aand Rose are boys.

1.He--His
He是代词，不能做定语，意思是他，HIS是形容词，做定语，意思是 他的。
2.boys--girls
Alice和Rose 是女生姓名。常识

This is my father.His name is John Smith. Alice aand Rose are his boys.

1 he-his
2 boys-girls

boys--girls

1 He--His