Threr's no one at home

Threr's no one at home there is no one at in no time at one it's no one's it's no one's There are many people at the station.Threr is only one person in the room.There are many people at the station.Threr is only one person in the room.为什么上面要用at the station而不能用in the station呢?at要怎么用呢,举几个例子 at one's desire at one's expense at one's service at one's age at one's No one's born being good at all things.为什么用being no one is home还是no one is at home there's no one else no one is wise at all no one likes him at all at one's best造句 snap at one's RT