Conjugation Verb to Be

To be - Simple Present Form

Positive Statement		Negative Statement
Long form	Short form	Long form	Short form
I am	I'm	I am not	I'm not
He is	He's	He is not	He isn't or He's not
She is	She's	She is not	She isn't or She's not
It is	It's	It is not	It isn't or It's not
You are	You're	You are not	You aren't or You're not
We are	We're	We are not	We aren't or We're not
They are	They're	They are not	They're not

To be - Simple Past Form

Positive Statement		Negative Statement
Long form	Short form	Long form	Short form
I was	---	I was not	I wasn't
He was		He was not	He wasn't
She was		She was not	She wasn't
It was		It was not	It wasn't
You were		You were not	You weren't
We were		We were not	We weren't
They were		They were not	They weren't