我买的这件衬衫太小，得换件大的。

This shirt I bought's too small—I'll have to change it for a bigger one.

《牛津词典》

我买的这架照相机是二手货。

I bought the camera second-hand.

《牛津词典》

我买的这一盒是现货。

I bought this package off the shelf.

《牛津词典》

We aren't very wealthy, so we don't have enough money to spend on that even if I wanted to.

我们不是很富有，所以即使是我想买，我也没有足够的钱去买。

不需要名牌 - SpeakingMax英语口语达人

One solution for that is to get a copy of a textbook I wrote called Basic Training in Mathematics.

解决办法之一,就是买一本我编写的教材,书名叫《数学基础训练》

耶鲁公开课 - 基础物理课程节选

I was the only one, believe it or not, at the store, who was buying floppies today .

不管你相不相信，我是今天唯一一个去商店里面去买软盘的人。

哈佛公开课 - 计算机科学课程节选