坐公交车:by bus/on the bus/taking a bus坐火车:by train/on the train/on the railway坐地铁:by subway/in the subway/坐小汽车:by car/on the car/taking a car坐船:by ship/on the sea/on board坐飞机:by air/on the fly/fly to/in the air/by plain/on board。