This is the 1646th most frequent Korean word.
사무총장은
"Secretary-General"
In this sentence, '사무총장은' is used as the subject of the sentence, indicating that the Secretary-General is the one who performed the action of attending.
사무총장은 중요한 회의에 참석했어요.
The Secretary-General attended an important meeting.
Here, '사무총장은' is again the subject of the sentence, specifying that the action of announcing was performed by the Secretary-General.
사무총장은 인도적 지원을 발표했습니다.
The Secretary-General announced humanitarian aid.
In this sentence, '사무총장은' serves to introduce the person who has the intention to carry out the action.