Adverbs: functions

Adverbs can modify verbs, adjectives, nouns, other adverbs and whole phrases or sentences:

example	function
Sit *quietly*!	modifying a verb (sit)
Claire was *rather* quiet.	modifying an adjective (quiet)
That week seemed to go by *incredibly* slowly.	modifying another adverb (slowly)
It takes *quite* a lot of courage to jump from a plane.	modifying a noun phrase (a lot of courage)
I’m going for a run *later* so I don’t want to eat anything now.	modifying the whole clause (I’m going for a run)
*Personally*, I don’t like the plans.	modifying the whole sentence (I don’t like the plans).It gives the speaker’s attitude. We often use commas with the adverb when it modifies the whole sentence.