Question

John is a mechanic na forma negativa e interogativa

Answer 1

is John a mechanic
isn't Jhohn a mechanic

Answer 2

Negativa do presente simples: John don't is a mechanic.
Negativa Verb To Be: John not is a mechanic.

Interrogativa do presente simples: Do John is a mechanic?
Interrogativa Verb To Be: John not is a mechanic?
Tem duas formas espero ter ajudado!