英语中常见的介词有哪些?答:1,表时间的介词:at,before,after,since,still,until,upon,on,from,between,by,in,during,for,through,within,over 2,表地点的:at,form,between,near,besid,by,close to,next to,behind,in front of,ahead of,before,arong,beyond,past 3,表工具或媒介:by the means of,with,through 4,表...