The verb to be is the most irregular verb in the English language. It is normally a linking verb showing existence or the condition of the subject. It can also be used as an auxiliary verb when forming the passive voice.
FORMS
PRESENT
PAST
PRESENT
PARTICIPLE
PRESENT
SUBJUNCTIVE
PAST
SUBJUNCTIVE
IMPERATIVE
INFINITIVE
PAST
PARTICIPLE
POSITIVE
NEGATIVE
To Be
Don't Be
Am, Is, Are
Am not, Is not, Are not
Was, Were
Was not, Were not
Being
Not Being
Been
Not Been
Be
Were
To Be
Don't Be
WITH SUBJECT
I am
You are
He is
She is
It is
We are
You are
TO BE
POSITIVE
TO BE
NEGATIVE
I am not / I'm not
You are not / You aren't
He is not / He's not
She is not / She's not
It is not / It isn't
We are not / We're not
You are not / You're not
Am I?
Are you?
Is he?
Is she?
Is it?
Are we?
Are you?