Adverbs Page 1 - UCL
https://www.ucl.ac.uk/internet-grammar/adverbs/xadvb1.htmAdverbs are used to modify a verb, an adjective, or another adverb: [1] Mary sings beautifully [2] David is extremely clever [3] This car goes incredibly fast . In [1], the adverb beautifully tells us how Mary sings. In [2], extremely tells us the degree to which David is clever. Finally, in [3], the adverb incredibly tells us how fast the car goes.