介词从其作用来分：
1、表示地点：in,at,on,between,beside,near,from,to,under,behind,across,along,among,by,down,beneath,below等；
2、表示时间： about,before,after,by,on,at,in,over,through,for等；
3、表示原因目的： for,with,from
4、表示除去：besides,but,except 5表比较：as,like,above,over 6表反对、赞成：against,for,with 7表结果：to,with,without 8、表手段方式：bu,in,with 9、表所属：of,with 10、表条件：on,with,without,considering 11表让步：despite,in spite of,not with standing 12、表关于：about,concerning,regarding,with regard to,so far as,as to 13、表对于：to,for,over,at,with 14、表根据：on,according to 基本上就这些！
