不能忘记和忘记不了分别怎么表达

上次怎么没看见补充问题。。。
can't forget； unforgettable

(sb.) can't forget (my/her/his/their) Chinese friends.

i cant forget my chinese friends

i could still remember the friends in China

不能忘记 can't forget
忘记不了 unforgettable

I can't forget my Chinese friends.