English
英语的问家庭人数用语「How many people are in your family?」
"How many people are in your family?"意为"你家有几口人？"，是英语中询问对方家庭人数的基本表达，常用于日常聊天，尤其是孩子之间。回答时通常用"There are...of us"的形式。
例句
How many people are in your family？
"你家有几口人？"（询问家庭人数的基本说法）
There are three of us in my family。
"我家有三口人。"
We're three too。
"我们家也是三口人。"（表示赞同）