The verb ‘be’ in different tenses
PRESENT SIMPLE - am, I’m (not), aren’t I?, is, ‘s, isn’t, are, ‘re, aren’t)
I am at home. = I’m at home.
I am not tired. = I’m not tired.
Am I early? (But: I am early, aren’t I?)
Where am I?
He is at work. = He’s at work.
He is not tall. = He’s not tall. =…