발표하는데

In a sentence

• 나는 내일 프로젝트를 발표하는데 준비가 충분하지 않아 걱정이다.

  I will present the project tomorrow, but I'm worried because I'm not prepared enough.

  In this sentence, '발표하는데' denotes the action of presenting with a supplementary clause expressing a concern about preparation.

• 그가 발표하는데 사람들이 모두 집중해서 듣고 있었다.

  While he was presenting, everyone was focused and listening attentively.

  Here, '발표하는데' is used to indicate the ongoing action of presenting and provides context for the subsequent observation.

• 우리는 발표하는데 필요한 자료를 아직 다 찾지 못했다.

  We haven't yet found all the materials needed for presenting.

  In this usage, '발표하는데' refers to the presentation action for which materials are still being gathered.