Basically, we form a negation in English with the preposition « no/not ».
Example:
I have a book. ==> Neg: I have no book.
I am a driver ==> Neg: I am not a driver
Negation with semi-auxiliary « to do »
« cIs it possible to observe negative sentences that carry the writings: don’t/doesn’t or didn’t? «
Yes, that is possible. In English, some verbs, unable to support the preposition no/not itself, are helped by the semi-auxiliary « to do » for doing so! The negation is then formed by the addition of « to do » and the preposition « no/not » (don’t; doesn’t; didn’t)+the remaining sentence.
Example:
I have a book. ==> Neg: I don’t (do not) have a book.
I like this cloth ==> Neg: I don’t (do not) like this cloth.
https://www.youtube.com/watch?v=fNNqkZ1JzkE
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