over,above,和on的区别
问题描述：
over,above,和on的区别
答
over,指正上方above,指在某物的上方（即高于某物）on在……上（ 与某物表面接触） ,如There is a bridge over the river .There are some pictures above the blackboard .There is a book on the desk .加油!不明白...