第1个回答 2013-02-08
on the first floor 固定用法‘ 在一楼’ ( 注意:如果是在房间里用IN
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第2个回答 2013-02-08
It's on the first floor.
It's just the way people say it. I guess you have to memorize this one.
i.e. There is a bookstore ON the first floor.
My office is ON the 2nd floor.
There is a gym ON the 3rd floor.
You just have to use ON.
I hope this helps.
第3个回答 2013-02-08
on the first floor 固定用法‘ 在一楼’