We need to buy some new furniture.

　　我們需要買(mǎi)一些新家具。

　　They've bought themselves a new car.

　　他們給自己買(mǎi)了一輛新車(chē)。

　　I went to buy a paper at the corner dairy.

　　我到街角的小店去買(mǎi)了份報紙。

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

　　買(mǎi)還是不買(mǎi)，你得作出選擇。

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

　　我去買(mǎi)份報紙，你能替我照看一下我的包嗎？