3. We can make negative sentences with
the verbe to be by using the word not
after the verb “to be”
For example :
affirmative negative
I am at home I am not at home
You are tall You are not tall
4. be subject verb yes=+subjct+be No+subjct+be+not
are you A teacher ?
Yes , I am No , I am not
is she At school ? Yes , she is No , she is not
5. Fill in these sentences with the correct verb: am, are,is
He ....................... a teacher
They ..................... friends
I ............................ a nurse
You ....................... a student
We ......................... happy
It ............................. a tree
She ........................... a doctor