I have a pen. My pen is red.
We have a car. Our car is fast.
She has a cat. Her cat is nice.
I = my
he = his
you = your
she = her
we = our
it = its
The possessive adjective goes before the noun or before the noun and adjective.
I lost my pen.
She played football with her brother.
We met our new teacher.
We say... We don’t say...
I did my homework. (NOT I did the homework.)
She visited her grandma. (NOT She visited she grandma.)
My dog sleeps in its basket. (NOT My dog sleeps in it’s basket.)