potrafie:
I can draw.
I can swim.
nie potrafie:
I can't skate.
I can't sing.
mama potrafi:
My mom can cook.
My mom can rollerskate
mama nie potrafi:
My mom can't draw.
My mom can't dance.
tata potrafi:
My dad can dance.
My dad can sing.
tata nie potrafi:
My dad can't cook.
My dad can't ride a bike.