***Do is used with 1st person, 2nd person singular number and all sorts of plural numbers in the form of present tense.
***Does is used with 3rd person singular number in the form of present tense.
Structure: Sub+do not/does not + v.. + ob + extension.
I do not want it.
You do not take tea.
He / She does not go to school regularly.
We don’t want to go there anymore.
I don’t want to see his face.
They don’t come here nowadays.
Do / does + sub + v. +ob+ extension?
Do you go to school?
Does know me?
What do you do here?
What does your father do?