leave sth on / at /in someplace
如：
1.He often leaves his books at home .
他經常把書落在家裏。
2. I left my keys on my desk yesterday.
昨天我把鑰匙落在書桌上了。
拓展：
leave ... for ... 離開……去某地。
leave for ... 動身去……。
如：
He is leaving his home for Beijing tomorrow .
他明天要去離開家去北京。
區別：
forget sth 忘記某事。
如：
I often forget English words .
我經常忘記英語單詞。