앞까지

In a sentence

• 그는 학교 앞까지 걸어갔다.

  He walked up to the front of the school.

  Here '앞까지' indicates motion reaching up to a specific location, combining '앞' (front) with '까지' (up to).

• 프로젝트는 오늘 아침 앞까지 진행되었다.

  The project progressed up until this morning.

  Here '앞까지' is applied temporally, where '앞' (front) metaphorically represents to the leading edge of time.

• 그녀는 새로운 문제들이 일어나기 앞까지 모든 상황을 알고 있었다.

  She was aware of all the situations until before new problems arose.

  In this sentence, '앞까지' is used in a comparative temporal sense, meaning 'until before' new events occurred.