In English adverbs are made by adding "ly" to the end of an adjective.
In Italian adverbs are made by adding "mente" to the end of an adjective, HOWEVER, there are some rules to follow before adding "mente":
Firstly, you must put the adjective in its singular masculine form and THEN:
if it ends in "o", change it to "a" and then add "mente"
if it ends in "le", drop the "e" and then add "mente"
if it ends in "re", drop the "ed" and then add "mente"
if it end in "e", just add "mente"
fortuno - fortunatamente
gentile - gentilmente
particolare - particolarmente
Some adjectives that end in "e":
benestante (well off)
Some adjective that end in "le":
dolcile - docile
crudele - cruel
imbecille - foolish
abile - clever
debole - weak
Some adjectives that end in "re":