How do you say "You've done nothing wrong to be sorry about"?
For example:
A: I feel sorry for not being able to come, i had an appointment with my doctor.
B: You've done nothing wrong to be sorry about

A: I am so sorry i didn't work hard, next time i'll do better.
B: You don't have to feel sorry, you haven't done anything wrong.

I saw some people using 네가 잘못한건 없어 or 미안해할거 하나도 없어.. Why did they use 한건 or 할 거? Is there a grammar rule behind it? Thanks in advance! :)

Question

How do you say "You've done nothing wrong to be sorry about"?
For example:
A: I feel sorry for not being able to come, i had an appointment with my doctor.
B: You've done nothing wrong to be sorry about

A: I am so sorry i didn't work hard, next time i'll do better.
B: You don't have to feel sorry, you haven't done anything wrong.

I saw some people using 네가 잘못한건 없어 or 미안해할거 하나도 없어.. Why did they use 한건 or 할 거? Is there a grammar rule behind it? Thanks in advance! :)

Answer

한건=한 것은
할거=할 것이

Answer

First sentence : 한건 is the past tense. Translated literally would be like : You did nothing wrong (so why you should be sorry????)
Second sentence : 할거 is the future tense
Translated literally would be like : There will be nothing to be sorry about (you did nothing wrong)

See that the two sentences have interchangeable meaning right ? That's it.