can - can't exercises

Auxiliary verb can (positive) - can't (negative) use

I can = I know to do something. / I know that something is possible for me.
Use can, when you ask someone to do things. Use 'can' to talk about 'possibility'. Always use can with another verb.

Can - can't statements and negatives

To form the negative add "not" after can to form one word. Example: cannot. Short form: can't. (can't = cannot)

Statements Negatives

I can write a letter.
You can write a letter.
He / She can write  a letter.
We can write a letter.
You can write a letter.
They can write a letter.
 
I can't write a letter.
You can't write a letter.
He / She can't write  a letter.
We can't write a letter.
You can't write a letter.
They can't write a letter.

English can - can't exercises

can - can't with free online exercises, examples and sentences, questions and can - can't negative sentences.

Online exercises English grammar and courses
Free tutorial can - can't. English can - can't exercises. English grammar easy to learn.