过去式：bought；过去分词：bought。 buy 英[baɪ] 美[baɪ] vt. 购买，购得; n. 交易，买卖; 便宜货; vt. 够支付; 买通; 收买; 贿赂; [例句]He could not afford to buy a house 他买不起房子。 [其他] 第三人称单数：buys 现在分词：buying 过去式：bought过去分词：bought

buy的过去式是bought。buy的过去式是bought作为动词表示买的意思，作为形容词表示从商店购买的意思。相关例句：I bought a one-way ticket to England today我今天买了张去英国的单程票。She bought a ton of clothes at the store她在店里买了一堆衣服。