CAN/ CAN'T

CAN / CAN'T shows ability, inability, request, permission, possibility, and inappropriateness.

Examples:

a. I can speak English.
b. You can not leave early today.
c. Can I come in, please?

NOTE: Negative form of CAN is either “cannot” or “can not” and its negative contraction is “Can’t”. 

Formation:

Positive: Subject + CAN + Verb1 

Negative: Subject + CAN'T + Verb1

Question: CAN + Subject + Verb1

POSITIVE STATEMENT				NEGATIVE STATEMENT
I	can	speak	English	I	can't	speak	English
He	can	run	very fast	You	can't	run	very fast
He	can	sit	in the garden	He	can't	sit	in the garden
She	can	come	with us	She	can't	come	with us
It	can	jump	to the other side	It	can't	jump	to the other side
We	can	make	delicious cakes	We	can't	make	delicious cakes
You	can	pass	the exam	You	can't	pass	the exam
They	can	draw	pictures	They	can't	draw	pictures