"To be " verbs : are, am, is,
was, were. Been and
Boeing. They are use to
describe or tell US the
condition of people, things
places and ideas, for
example, they could tell
US the subject's age,
nationality, job or other
traits
Affirmative statements
I am
you are
he is
she is
they
are we
are IT
is
Negative
statements
I'm
not
you're
not
she's
not
they're
not
we're
not
it's
not