.................................... a girl.
She is a girl.
.................................... cats.
They are cats.
.................................... students.
They are students.
.................................... glasses.
They are glasses.
.................................... a monster.
It / He / She is a monster.
.................................... a teacher.
She is a teacher.
.................................... an actor.
He is an actor.
.................................... a dog.
It / He / She is a dog.
.................................... a superhero.
He is a superhero.
.................................... a tree.
It is a tree.
.................................... a T-shirt.
It is a T-shirt.
.................................... trousers.
They are trousers.
................................... my neighbor.
He is my neighbor.
.................................... a doctor.
He is a doctor.
.................................... a flower.
It is a flower.