3、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.
4、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.
5、以ic 結尾的詞，加ally.
如：economic-economically; basic-basically;scientific-scientifically; automatic-automatically; energetic-energetically;
6、以輔音字母加le結尾時,去e加y——高考最喜歡考這一點規則。
如：simple-simply; considerable-considerably;terrible-terribly.
元音字母加le結尾時，直接加 ly，如：sole-solely。但是whole-wholly例外。
7、以-ll結尾時，只須加 –y.
如：dull-dully;shrill-shrilly.