leave的意思是“遗留，落下”，过去式是left。leave指把某物忘在某地，其后接地点状语。forget的意思是“忘记”，过去式是forgot。forget指由于记忆上的忽略而忘记了某人或某事物，后面可以接名词、动词不定式或动词-ing形式，不可接地点状语。
leave和forget的用法例句
一、forget
音标：英 [fəˈget]美 [fərˈget]
释义：忘掉;忘记，忘却;忽略，疏忽;遗落
1、I forgot to ask him forhisaddress.
我忘记向他要地址。
2、I forgot my purse (= I did not remember to bring it) .
我忘了带钱包。
3、‘Hey, don't forget me (= don't leave without me) !’
“喂，走时别落下我！”
4、Aren't you forgetting something? (= I think you have forgotten to do sth)
你是不是忘了什么？
二、leave
音标：英 [li:v]美 [liv]
释义：离开;遗弃;忘了带;交托
1、He will leave by train.
他将乘火车离开。
2、She left work early to meet her husband.
她提前下班去接她丈夫。
3、My baby cries when I leave the room.
我一离开房间宝宝就会哭。
4、The plane leaves at 11 o'clock.
飞机11点起飞。