I bought a book yesterday
一本───a copy;书───book
I autographed a copy of one of my books.───我在我的一本书上签了名。
I sent a copy to the school principal.───我寄了一份复印件给校长。
I'll do a copy for you.───我将为你复制一份。
Grab a copy of the ad from our site and print it out, circle what you want and keep it on your side at all times.───从网站上复制一份广告并将之打印下来，圈住你想买的产品，并随时带在身上。
Send a copy of the complaint form to the other party immediately, and then wait a week for a response.───立即向对方寄一份投诉表格的复印件，然后等待他的答复，时间为一周。
He gave whoever asked for it a copy of his latest paper.───不论谁要，他都将他最近写的论文给他一份。
She forwarded them a copy of her British passport.
I will send you a copy of the file.
Have you got a copy of yesterday's newspaper?
The thieves replaced the original painting with a copy.
Enclosed is a copy of...