你以为你是谁？

Who do you think you are?

　　The bus was crowded, and as one more man tried to get on, the passengers wouldn’t let him aboard¹.
　　“It is too crowded, “they shouted.” who do you think you are?”
　　“I am the driver.” he said.

　　你以为你是谁？
　　公共汽车上很挤，当又一个人还是试图上车时，乘客们不让他上。
　　“车上太挤了，”他们喊道，“你以为你是谁？”
　　“我是司机！”他说。

A note:
aboard: adv.在船(飞机、车)上, 上船(飞机、车)prep.在(船、飞机、车)上, 上(船、飞机、车).
on board:到船上, 在船上
go aboard: 上船 (上飞机等)
All aboard! 请上船[飞机、车],都上来!