Used to indicate position above and supported by or in contact with.
예문
1. Once again Christmas is on us. (또 다시 크리스마스가 다가온다) 2. on one's honor (명예를 걸고) 3. on a weekend (주말에) 4. hit a person on the head (사람의 머리를 치다) 5. There was a war on. (전쟁을 하고 있었다)
