I think you would learn Chinese word in Korean. Because almost professional field use many Chinese word. Chinese words in Korean sound different between just Chinese. So you would have learn Chinese word in Korean. Plus, you would have learn -합쇼체. There are examples. It is the politest type and professional. Good luck!
평서형 : -ㅂ니다,-소서,-나이다,-올시다 예)징징대지 않습니다!
감탄형
의문형 : -ㅂ니까,-나이까 예)신이시여 저를 버리십니까?
명령형 : -ㅂ시오 예)주의하십시오.
청유형 : -시지요 예)식사하지요.
(but some expressions are old fashion. for example: -소서, -나이다, -올시다, -나이까 aren't used.)