A continuación, verás algunas oraciones que usan el verbo "to be"; ellas están en forma afirmativa, luego en pregunta y finalmente como negativas:
I am a good student
Am I a good student ?
I am not a good student
He is a famous singer
Is he a famous singer ?
He is not a famous singer
You are my friend
Are you my friend?
You are not my friend
He is an efficient doctor
Is he an efficient doctor ?
He is not an efficient doctor
It is a modern car
Is it a modern car?
It is not a modern car
We are nice persons
Are we nice persons?
We are not nice persons
She is a pretty girl
Is she a pretty girl?
She is not a pretty girl
Mary is a good nurse
Is Mary a good nurse?
Mary is not a good nurse
Michael is a fat boy
Is Michael a fat boy?
Michael is not a fat boy
They are lazy boys
Are they lazy boys?
They are not lazy boys
