He does his homework bad
he does his homework badly.
We listen quiet in class
we listen quietly in class.
The dog moves fastly
the dog moves fast.
She sings very beautiful
she sings very beautifully.
The teacher speaks loud
the teacher speaks loudly.
They play football bad
they play football badly.
She dances good
she dances well.
I swim slow
I swim slowly.
He runs quick
he runs quickly.