kinds of the verbs

Kinds of the verbs:

Verb to be = present (am, is, are)
Were , was)) past
Ex:- I'm a student.
We were students.
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Verb to do= present (do ,does)
Past (did)
Ex: she doesn't go to Canada.
He didn't go with e.

Verb to have= present(have ,has)
Past (had)
Ex: I have 4 brothers.
He hadn't a book.