Respostas

2014-03-26T22:42:00-03:00
I'm/ Am I?
You're/ Are you?
He's/ Is he?
She's/ Is she?
It's/ Is it?
We're/ Are we?
You're/ Are you?
They're/ Are they? 
2014-03-26T23:07:04-03:00
Exemplos:

Afirmativo contraído: I'm studying now.
                              You're tired.

Interrogativa: Do you whant to go to the movie ?
                   Where is the car?