在某人家应说in one's 还是at one's
问题描述：
在某人家应说in one's 还是at one's
答
in one's home
at home
答
in one's
在自己家at home
答
in one's home
at home
答
AT
答
at one's
答
Both are OK.
答
at
I am at James'.
我在詹姆斯家。