be used是动词的被动语态。而used是过去式。或者过去分词。
例如:1) Our time and money have been used.2)We should use our time to do something useful.
3) With the money used up,they had to hunt for a new job.
be used to do something被用来做某事;be used to something/be used to doing sth习惯于某事/习惯于做某事;used to do something过去常常做某事。
be used和used的区别 扩展
单独的be used 可以做“被用来,被用做”,用于被动语态;used常和to连用,意思是“过去常常”