buy的第三人称单数形式为buys。buy可作名词和动词两种词性，基本含义有“购买”、“够支付”、“收买”、“贿赂”、“合算的商品”、“买进或出售的东西”。
buy的基本含义及用法介绍
buy作为英语单词，可作名词、动词，作名词时意思是“购买，买卖；所购的物品；合算的东西”，作及物动词时意思是“购买；获得；贿赂；相信”，作不及物动词时意思是“买，采购”。例句有：
1、He bought a new coat for me.
他给我买了一件新外套。
2、He gave his children the best education that money can buy.
他让孩子们接受花钱能买到的最好的教育。
3、Her fame was bought at the expense of her marriage.
她出了名，却牺牲了她的婚姻。
4、You could say you were ill but I don't think they'd buy it.
你可以称病，但我想他们不会相信的。
5、That jacket was a really good buy.
那件夹克确实买得很划算。
6、Computer games are a popular buy this Christmas.
这个圣诞节电脑游戏很畅销。
7、It was a risky operation, but might buy more time...
这是一次冒险的行动，但也许能赢得更多的时间。
8、Once he shows he can be bought, they settle down to a regular payment.
一旦他表现出可以被收买，他们就会定期向他行贿。
9、I'm not buying any of that nonsense.
我才不信那些废话呢。
10、This was still a good buy even at the higher price...
即使价格更高一些，这仍然很合算。
