go the extra mile不是指“多走一英里”，而是“付出比别人期望中还要大的努力”，即“加倍努力;加把劲 ”。

【例句】
As an intern, you have to prove to your fellow employees that you're willing to go the extra mile to get the job done.
作为实习生，你需要向你的同事证明你很花更大的努力来完成工作。

Mike is a nice guy, always ready to go the extra milefor his friends.
迈克是个好人，帮助朋友总是尽心尽力。