INTEROGATIVE
Am I singing ?
Are you singing ?
Is he/she/it singing ?
Are we/you/they 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