We can ...
... speak Chinese (and dance).
dance
play the guitar
I can ...
... play the guitar.
?
play the guitar
swim
She can paint.
I can swim.
paint
Mary can't ...
... draw.
?
paint
I can't ...
... paint.
?
swim
sing
They can't ...
... ride bikes.
?
Ride a bike
They can't dance.
?
dance
speak Chinese
draw
He can't ...
... swim.
I can't swim.
?
sing
They can dance.
He can't sing.
?
chinese
?
draw
I can ...
... ride a bike.
I can ...
... dance
ride a bike