These two groups of words are often confused because they look and sound very similar. For example the adverb of quick is quickly. Remember,
Adverbs describe a VERB.
Adjectives describe a NOUN.
As a general rule to change an adjective to an adverb we add ‘ly’ and these are the adverbs we will focus on today. In the following sentences do we need an adjective or an adverb?
Today's lesson is by Caroline
Link: How to use adverbs and adjectives