adverb

USAGE Adverbs come before verbs and adjectives in a sentence to describe the degree or manner of an action or state. 잘 “well” : 잘 + Verb 먹어요. …eat(s). 잘 먹어요. …eat(s) well. 해요. …do(es). 잘 해요. …do(es) well. 자요. …sleep(s). 잘 자요. …sleep(s) well. 울어요. …cry(cries). 잘 울어요. …cry(cries) well. 웃어요. …smile(s) / laugh(s)….