This is the 12205th most frequent Korean word.
다녀야
"다녀야" means "must go (and return)."
In this sentence, '다녀야' is used as a modal verb combined with ' 하다,' indicating an obligation or necessity to attend school.
학교에 열심히 다녀야 합니다.
You must attend school diligently.
Here, '다녀야' implies a recommendation or suggestion to visit the library frequently.
도서관에도 자주 다녀야 해요.
You should visit the library often.
In this context, '다녀야' expresses a personal resolution or advice to attend the gym regularly for fitness.