i live in a flat in city Garden in Ninth Street.i live with my family in a flat on a busy street.同样是street.,为什么前一句前是in 后一句用on

问题描述:

i live in a flat in city Garden in Ninth Street.i live with my family in a flat on a busy street.
同样是street.,为什么前一句前是in 后一句用on