美国：the first floor,英国：the ground floor 二层”怎么表达

美国：the first floor,英国：the ground floor 二层”怎么表达 in the first floor at the first floor还是on the first floor on the first floor是什么意思 the ground floor 和the first floor 的区别 英国英语和美国英语中关于楼层的说法有何区别?“the first floor”“ the ground floor ”在英语和美语中分别怎样理解? the first floor究竟是指一楼还是二楼? the first floor的英文是什么? There are ______ ,______and_______on the first floor the first floor是什么意思及用法 the first floor是什么意思及用法 The floor above the ground floor is the first floor.为什么不用on 用above 4.The music room is on the first floor.(对on the first floor提问? Is your classroom on（）floor?one first the first it‘s on the first floor对on the first floor提问 I like living on the first floor.对on the first floor提问 in the first floor和on the first floor有什么区别如题 英国用ground floor 表达 美国用first floor 为什么呢