He will forget to take his bag away.

问题描述:

He will forget to take his bag away.
he will forget taking his bag away.
请问这两句话的区别在哪里,谢谢

forget to do sth 忘记做某事(还没有做)
forget doing sth忘记做过了某事(已经做了,当事人忘记了)
are you clear?