Lou sings loudly while he drives.
Forming Adverbs: add -ly
Adverbs can describe verbs, adjectives, other adverbs, or entire clauses.
Example
Adverbs are often formed by adding -ly to an adjective.
Examples
Dan has neat handwriting.
(neat is an adjective describing the noun handwriting)
Dan writes neatly.
(neatly is an adverb describing the verb writes)
When describing a verb, adjective, or adverb, make sure to use an adverb.
Examples
Incorrect: Sammy stared strange at his puppy.
Correct: Sammy stared strangely at his puppy.