Affirmative - Interrogative - Negative

AFFIRMATIVE

I am a student.     -     I'm a student.
You are a teacher.     -     You're a teacher.
He is a singer.     -     He's a singer.
She is a doctor.     -     She's a doctor.
It is a book.     -     It's a book.
We are from Brazil.     -     We're from Brazil.
You are at school.     -     You're at school.
They are friends.     -     They're friends.



NEGATIVE


I am not a student.     -     I'm not a student.     -    xxxxxxxxxx
You are not a teacher.     -     You're not a teacher.     -     You aren't a teacher.
He is not a singer.     -     He's not a singer.     -     He isn't a singer.
She is not a doctor.     -     She's not a doctor.     -     She isn't a doctor.
It is not a book.     -     It's not a book.     -     It isn't a book.
We are not from Brazil.     -     We're not from Brazil.     -     We aren't from Brazil.
You are not at school.     -     You're not at school.     -     You aren't at school.
They are not friends.     -     They're not friends.     -     They aren't friends.


INTERROGATIVE


Am I a student?
Are you a teacher?
Is he a singer?
Is she a doctor?
Is it a book?
Are we from Brazil?
Are you at school?
Are they friends?