Question

3 To Be afirmativo negativo

Answer 1

To be - 
Is - is not/ isn´t
Are - are not/ aren´t
Am - am not 

Answer 2

Afirmativo:
I am
You are
He/she/it is
They are
We are

Negativo:
I'm not ou I am not
You aren't ou you are not
He/she/it isn't ou He/she/it is not
They aren't ou they are not
We aren't ou we are not