We need to buy some new furniture.

　　我們需要買一些新家具。

　　They've bought themselves a new car.

　　他們給自己買了一輛新車。

　　I went to buy a paper at the corner dairy.

　　我到街角的小店去買了份報紙。

　　You'll have to choose whether to buy it or not.

　　買還是不買，你得作出選擇。

　　Could you watch my bags for me while I buy a paper?

　　我去買份報紙，你能替我照看一下我的包嗎？