Question

parte negativa e interrogativa de TO BE ejemplos

Answer 1

Negativa 

Is= isn't
Are= aren't

Ejemplo:

She isn't a teacher.
They aren't students in this college.
It is a beautiful cat.

Interrogativa

se coloca is o are al principio, luego el sujeto, y luego el predicado.

ejemplo: 

Is she a teacher?
Are they students in this college?
Is it a beatiful cat?