There is a table in the room.
There isn't a table in the room.
I am a teacher
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I like salad.
I don't like salad.
Tania is a doctor.
Tania is not a doctor.
There is a sofa.
There isn't a sofa.
She can sing.
She can't sing.
I am thirsty.
I am not thirsty.
I can play the guitar.
I can't play the guitar.
I can play football.
I can't play football.
This is a car.
This is not a car.
I like rabbits
I don't like rabbits
It is a car
It is not a cat