Breakdown of hoeui jeone balpyo jaryoreul dasi hwaginhaeyo.
Questions & Answers about hoeui jeone balpyo jaryoreul dasi hwaginhaeyo.
Because 전에 attaches directly to a noun phrase to mean before X.
So:
- 회의 전에 = before the meeting
You do not normally add 를 or 가 there, because 회의 is not acting as the object or subject of the main verb. It is just part of the time expression.
Think of 회의 전에 as one time unit:
- before the meeting