home前面用in还是at

用at，构成at home

Alexander reached home on time .亚历山大准时到了家。

But singapore is my home .

但是新加坡是我的家。

It looks completely at home .

它看起来完全就像在家一样。

Difficulty accessing corporate or home networks .

企业或家庭网络访问困难。

China faces huge problems at home .

中国面临着严重的国内问题。