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.
