Let's define...
Name three questions that adverbs can answer.
How, when, to what extent (degree), where
Everyone worked hard on the projects for the science fair. What part of speech is hard in this sentence?
adverb
Linda took a long drink of water. What is the word long in this sentence?
adjective
Jess skates better than Tony. What part of speech is better in this sentence?
adjective
Only one person arrived late for the party. What part of speech is late?
adverb
Which word could not be an adverb: soon, well, probably, tomorrow, costly
costly
The long white envelope looked quite ordinary. What part of speech is quite?
adverb