What is the different between“I've done nothing to you’”and“I didn't do anything to you”？
What is the difference between“I've done nothing to you’”and“I didn't do anything to you”？

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Answer

"I 've done nothing to you" I will say that main I haven't  do anything to you now, it is present time now.
"I did not do anything to you" I would say in the past I did not do anything to you at all.

Answer

the first sentence is correct.

the second sentence is a double negative potentially.

you should use the first even though you will the hear the second sentence.  It is not recommended.

and never say this"I didn't do nothing"