[英文] in vs. on 的區分

In 和 on
corner: 如果在一個密閉空間的角落是 in the corner; 如果在馬路上的角落可以用at 或on

door: there is somebody at the door; there is a sign on the door.
交通工具： on a bus , on a train, on a plane, on a ship; in a car, in a taxi