Showing someone's ability in doing something

 Practice the dialogue with your friend

Nuri: My uncle, Anton, is a very skillful person.

Nita: Really?

Nuri: Yes. He can do many things.

Nita: Interesting. Can he drive?

Nuri: Yes. He can drive. He is a good singer and dancer. And he can speak ten languages.

Nita: Wow!

Nuri: He can even sew.

The words in bold in the dialogue above show someone's ability in doing something. 

Study the following pattern.

Positive
I	can	play chess.
You
We
They
He
She
It
Subject + can + infinitive

Negative
I	can't	play chess.
You
We
They
He
She
It
Subject + can't/cannot + infinitive

Question
can	I	play chess?
	You
	We
	They
	He
	She
	It
Can + subject + infinitive

Short answer
Yes, No,	I	can, can't
	You
	We
	They
	He
	She
	It
Yes, + subject + can No, + subject + can't (or cannot)

To show someone's ability in doing something, we can say:

Positive

- She can play chess.

- He can play the piano.

Negative

- She cannot play chess.

- He cannot play the piano.

Interogative

- Can she play chess?

- Can he play the piano?