别忘记用英文

一个否定，不要不去就是要去做，Don't foget to do anything.

Don't forget the Aug 21st

Don't forget not to do anything.

这些都可以使用，望采纳，谢谢！

Don't forget to August 21

可以有两种表达，第一种更地道：1.Remember not to do anything. (反意法：记住什么也别干。)2. Don't forget not to do anything. (正译法：别忘了什么也别做)说明：不能翻译成Don't forget to do anything. (这句话的意思是，别忘了去做点事)

do not forget that = remember thatDon't forget (that) tomorrow is your mother's birthday. Remember (that) tomorrow is your mother's birthday. Don't forget to lock the door when you are leaving.do not forget = rememberDon't forget to lock the door when you are leaving.Remember to lock the door when you are leaving.同义句，还可以用 remind oneself 提醒remind youself to lock the door when you are leaving.