Interrogative
Am I singing?
Are you singing?
Is he / she / it singing?
Answers
Yes, I am / No, I'm not.
Yes, we / you / they are.
No, we / you / they aren't
Yes, he / she / it is.
No, he / she / it isn't.
Negative - long forms
I am not singing.
You are not singing.
He / she / it is not singing.
We / you / they are not singing.
Short forms
I'm not singing.
You aren't singing.
He / she / it isn't singing.
We / you / they aren't singing.
