I can swim. 
You can always ask me for help.
Can you pass me the salt?
Can she do that?
I can always help.
He can break a nut with his head.
She can hurt you.
They can help you.
I am impressed that he can actually do that!
You can count on me.
You are old enough so I think you can handle the truth. 
You can go anywhere if you can read.
I will do it because I can.
We can cover her in plastic so she won't fall.
Some can cure the cancer, but I can eat ten pizzas in less than ten minutes.

Espero que te haya ayudado.