What about "I've never done that"?
This sounds better in my opinion since 적 basically means "experience"
thats ok too
That's what I told to my teacher... ^^
why is "I never do it." not acceptable? 없습니다 is present tense right?
Because it means "I don't have experience of it being done" where have is in the present tense
I think it's the 한 part of the sentence that makes it past tense as the sentence structure for using 적이 있다/없다 is "past modifier of verb + 적이 있다/없다".
What about "I am never done."?
I think (not sure)
○ Never as in "not yet" = ~(으)ㄴ 적이 없다
I have never been cheated (done) = 저는 속인 적이 없다
○ Never as in "not by any means" = 결코 ~지 않다
I never get cheated (/ am never done?) = 저는 결코 속지 않았다
Grateful for any feedback.