buy

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buy的基本意思是用金钱换取等价物,即“购买”,是普通用词,可接具体物品如书籍、衣物等作宾语。buy也可表示“付出…以换取…”,这时可接健康、幸福、名声、忠诚等抽象名词作宾语。buy引申还可指“收买,贿赂”“相信(即买…的账)”。
buy在句中主要用作及物动词,偶尔用作不及物动词。用作及物动词时,后接名词或代词作宾语,有时还可接双宾语,其间接宾语可转化为介词for的宾语。可用于被动结构。
buy的主语一般是人,也可以是无生命的事物。
表示“在某商店买”可接介词at; 表示“从某处买”可接介词from, of, off; 表示“花多少钱买”可接介词for, at；表示“给某人买”可说buy sb sth，也可说buy sth for sb，不能说buy sth to sb。
buy是非延续性动词，不可与表示时间段的状语连用，但可与表示时间点的状语连用。

If you buy something, you obtain it by paying money for it.
If you talk about the quantity or standard of goods an amount of money buys, you are referring to the price of the goods or the value of the money.
If you buy something like time, freedom, or victory, you obtain it but only by offering or giving up something in return.
If you say that a person can be bought, you are criticizing the fact that they will give their help or loyalty to someone in return for money.
If you buy an idea or a theory, you believe and accept it.
Buy into means the same as .
If something is a good buy, it is of good quality and not very expensive.