"Buy sth for sb"和"Buy sth to sb"都表示购买行为，区别在于目的和方向。"Buy sth for sb"表示为某人购买某物，旨在满足其需求 …
to pay someone or do something for someone, so that that person does not tell anyone something that they know …
buy sth for…. 与 buy sth at…. 为什么要用不同的介词，两者有什么区别？. 若表示用多少钱买某物，通常用介词 for 。. 如：. I bought …
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