1) Don't forget my artificial arm.

别忘了我的假臂。
2) Do not forget your umbrella !

别忘了你的伞!
3) I have forgotten his name.

我忘了他的名子
4) Don't forget to buy me a ticket.

买票时可别忘了我
5) Mind you don't forget it.; Be sure to remember it.

可别忘了。
6) Don't forget.

别忘了。
参考词条