buy的过去分词就是bought，它的意思就是买、购买、够支付、买通、 收买、贿赂。当使用这个单词的时候，往往已经购买，而不是尚未购买。如果需要用这个词表示自己准备购买某种东西是错误的，只需要使用bug就可以了。

buy的用法

作为动词：

1.obtain in exchange for payment

买,购

we had to find some money to buy a house.

我们得筹钱买房子.

2.often with negative]be a means of obtaining (something) through exchange or payment.

换得;买到;获得

money can't buy happiness.

金钱不能买到幸福.

3.procure the loyalty and support of (someone) by bribery.

向…行贿,收买

here was a man who could not be bought.

这里有个不能被收买的人.

I'll buy off the investigators.

我将收买调查者.

或者名词n.

交易,买卖

He made a buy of wheat last week.

上星期他做了一笔小麦的买卖.