-아요/어요 is the verbal and adjectival conjugation.
It is used to make declarative and interrogative statements for an action or a state.
-아요 is added when the final vowel of a verb or an adjective stem is ᅡ or ᅩ, while -어요 is added when the final vowel of a verb or an adjective stem is a vowel other than ᅡ or ᅩ.
If a verb or an adjective ends with 하다, 하다 is changed to 해요.