在英语里面 “我家有三口人”怎么说？

There are three people in my family.

首先,这种情况应该用there be 句型
其次,应该用 three people,不可用 three persons.people 是person 的复数形式.

希望能有所帮助

There are three persons in my family.

there're three people in my family.

I have a three-person family

my family have three man