in,on,at,to,with都是怎样区别?答:1、表示位置的介词有at,on,in,before,after,above,among,below,behind,between,beside,near,over,under等。in your grandparents's room:在你外祖父母的房间 on the desk : 桌子上 behind the door: 门后 2、表示方向的介词有to,into,along,at,down,for,from,out,of,toward ,up等。go ...