To be

I am

you are

he is

she is

it is

we are

you are

they are

I am not = I'm not

you are not = you aren't

he is not = he isn't

she is not = she isn't

it is not = it isn't

we are not = we aren't

you are not = you aren't

they are not = they aren't

Am I (tall)? Yes, I am./ No, I'm not.

Are you (pretty)? Yes, you are./ No, you aren't.

Is he (smart)? Yes, he is./ No, he isn't.

Is she (Polish)? Yes, she is./ No, she isn't.

Is it (cute)? Yes, it is./ No, it isn't.

Are we (here)? Yes, we are./ No, we aren't.

Are you (healthy)? Yes, you are./ No, you aren't.

Are they (comfortable)? Yes, they are./ No, they aren't.