across from the street和across the street的解释、区别、用法

问题描述:

across from the street和across the street的解释、区别、用法

across from the street在街的对面 (across from在.对面)
across the street穿过街道(across 介词,穿过)谢谢!不过介词可以做动词吗?cross好像是动词横跨的意思啊。