My family has four people.(x)
这样的表达简直太中式了。
更加的地道表达是:
There are four of us in my family.(√)
也可以说:
"My family consists of four people."
"There are four people in my family"更加自然和亲切,因为它更专注于家庭成员的存在,而不是他们的数量。因此,在表达这个意思时,建议使用 "There are four people in my family",这样可以更好地传达你的意思,同时也更符合英语的习惯用语。