How do you make an Adverb of Manner?
Regular Adjective (bijvoegelijk naamwoord) ---> + LY (quietly, carefully)
IMPORTANT:
Adjective ending on a Y ---> Y=i + LY (heavily, angrily)
Adjectives ending in LE ---> remove LE and add LY (terrible = terribly)
Irregular adjectives do not change or change completely