Is it he doesnot has a father or have a father?
When to use don't and when to use do not?
He doesn't have a father. He does not have a father. The second is slightly more formal and emphatic.
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He doesn't have a father.
He does not have a father.
The second is slightly more formal and emphatic. Use it in formal writing or when you are arguing with someone else about the existence of said father.
Otherwise, there is no difference.