She can sing.
She can ski.
She can cook.
She can't write.
She can't speak English.
She can make cupcakes.
He can play tennis.
He can climb a tree.
She can't fix the car.
Babies can't read.
He can surf.
He can't run fast.
He can ride a horse.
She can't cook.
It can't swim.
He can't skate.
Superman can fly.
She can skip/jump rope.
He can't play the guitar.
He can't skateboard.
She can't drive (a car).
It can paint.
It can climb.
He can't play football.
She can't play the piano.