Has the train for Boston gone yet? 往波士顿的火车开走了吗？ What time will the next train come? 下一班火车什么时候来？ The next train comes three hours later. 下一班火车三小时后会来。 Is the next train a limited express? 下一班是特快吗？ Can I use this ticket? 我可以用这张票吗？ This ticket is only for today. 这张票只能今天用。 Please get another ticket. 请再买一张票。 Can't I use limited express ticket either? 我也不能用特快车票吗？ Can I refund this ticket? 我可以退这张票吗？
