동사 형태
원형
begin
Past Simple
began
Past Participle
begun
예문
원형 · begin
Classes begin at nine o'clock sharp.
Past Simple · began
The concert began with a piano solo.
Past Participle · begun
The meeting had already begun when I arrived.
활용 패턴
세 형태가 모두 다름 — 가장 연습이 필요한 그룹입니다.