buy sth to sb与 buy sth for sb区别：
1、buy sth to sb，表示做某事给某人，如I bought a bag to my mother.（我买了一个包给我母亲）（本来没有打算）。
2、 buy sth for sb，表示为了某人而做某事，如I bought a bag for my mother。（我为了母亲，买了一个包给她）（有目的）。
拓展资料
buy sth to sb
1、Online retailers are making it hard for best buy to compete on price.
百思买很难在价格上与在线零售商进行竞争。
2、This can help you decide on the hardware you should buy to set up or upgrade your servers.
这可以帮助您决定是否应该购买硬件来组装或升级您的服务器。
3、Agile is like the new brand of sneaker that we want to buy to help make our development teams jump higher, run faster.
敏捷就像一个新品牌的运动鞋，我们买来是想让它帮助我们的开发小组跳得更高，跑得更快。
4、When you use a relational database, there's something more valuable than the hardware and software you buy to manage the data& the data itself is the ultimate asset.
使用关系数据库时，有些东西比用于管理数据的硬件和软件更加有价值，它就是数据，数据本身是最有价值的资产。
5、In early 2012, when the losses appeared to be mounting, there was no discussion by any of the three about what bonds or derivatives they might sell or buy to minimize their losses& also known as trading.
2012年初，他们的损失有扩大的趋势，但他们中间没有任何一个人提出通过买卖债券或衍生产品来尽量减少损失，或者说进行交易。
buy sth for sb的用法
1、At the moment we are debating what furniture to buy for the house
我们眼下正盘算着为房子购置什么样的家具。
2、Are you here alone? No, my friend goes to buy for drink.
你一个人在这儿吗？不，我朋友去买饮料了。
3、I don't know which to buy for his birthday.
我不知道该买哪一样当他的生日礼物。
4、Can you help me decide what to buy for Peter's birthday?
你能否帮我决定一下该为彼得买什么礼物？