How to difference 'not' and 'do not'?
For example if someone says to me 'I'm obsessed', what is more correct?

'who not?' or 'who don't?'

Question

How to difference 'not' and 'do not'?
For example if someone says to me 'I'm obsessed', what is more correct?

'who not?' or 'who don't?'

Answer

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Answer

Between "Who isn't?" and "Who doesn't?", "Who isn't?" would be the correct choice.

You would use "do" for actions. For example, "Who doesn't act obsessed?" or "Who doesn't do that everyday?"

Answer

Who isn’t obsessed?
Who’s not obsessed?