the floor above the ground floor is the first floor.为什么不用ove

the floor above the ground floor is the first floor.为什么不用ove The floor above the ground floor is the first floor. the ground floor 和the first floor 的区别 in the first floor My classroom is on the ground floor. The canteen is on the first floor. The supermarket is on the first floor. the,on,is,the,canteen,first,floor The computer room is ( ) the first floor 美国：the first floor,英国：the ground floor 二层”怎么表达 at the first floor还是on the first floor the ground floor is many children's favourite the first floo