leave off /leave away from/leave请问这三个的区别都有离开的意思,谁能帮我细致些的解答一下,最好给我有例句~

leave1及物动词 vt.1.离开(某处)[(+for)]Mr.Smith left the room at two o'clock.史密斯先生两点离开房间.2.离开(某人)的身边;遗弃,离弃Her husband has left her.她的丈夫把她遗弃了.3.辞去(工作等);脱离(组织等)Ma...