形容詞變副詞例子：
1.一般情況下直接加“ly”，如：
quick-quickly;polite-politely;sad-sadly;imediate-immediately;recent-recently
2.少數以e結尾的形容詞，要去掉e再加-ly。如：true-truly;due-duly
絕大多數輔音字母加e結尾的形容詞直接加-ly。如：
polite-politely;wide-widely;wise-wisely;nice-nicely
3.以“y”結尾的，且讀音為/i/，先將“y”改成“i”，再加“ly”，如：
happy-happily;heavy-heavily;angry-angrily;busy-busily
但是如果讀音為/ai/，直接加ly，如：dry-dryly;sly-slyly;shy---shyly
4.以ic結尾的詞，加ally，如：
economic-economically;basic-basically;scientific-scientifically;automatic-automatically;energetic-energetically;但是public-publicly例外。
5.以輔音字母加le結尾時,去e加y，如：
simple-simply;considerable-considerably;terrible-terribly
gentle-gently;possible-possibly;probable-probably;incredible-incredibly
元音字母加le時加ly，如：sole-solely。但是whole-wholly例外。
6.以-ll結尾時，只須加–y，如：dull-dully;shrill-shrilly。