Used to indicate position above and supported by or in contact with.
예문
1. We saw Lake Como on our left. (왼편에 코모호가 보였다) 2. on equal terms (평등한 조건으로) 3. an authority on astronomy (천문학의 권위자) 4. march on the front line (최전방을 향하여 행군하다) 5. hurry on to the airport (공항을 향해 서둘러 가다)
