Adverbs modify adjectives, verbs and other adverbs. Here are instances where the modifications are made:
(a) Modify adjectives:
He is happy now.
(adj.) (adv.)
(b) Modify verbs:
He smiles happily.
(verb) (adv.)
(c) Modify other adverbs:
He smiles happily now.
(adv.) (adv.)
An adverb answers the questions:
Where?
When?
How?
How often?
To what extent?
Examples:
Wait here (Where? Here). I’ll look for him. He could be anywhere (Where? Anywhere).
The principal . . . → Read More: Adverb