Affirmative:
It is a big dog.
We are intelligent.
You are students.
He is a doctor.
Many people are happy
My book is on the table
I am Romanian.
You are a girl.
The book is red.
Tom and Peter are friends.
Negative:
That house is not to big.
He is not here right now.
They are not ready to go yet.
It is not very sunny outside.
I am not on the phone.
My friend John is not in the classroom.
These shirts are not on sale.
Maria is not in the garden.
I am not hungry at the moment.
There are not any pupils in the classroom.