The American economic system （主语） is.organized（谓语） around a basically private-enterprise,market-oriented economy（状语） in which （这是一个定语从句,in which修饰前面提到的economy ）consumers largely determine （后面接的是个由what引导的宾语从句）what shall be produced by spending their money in the marketplace for those goods and services
（后面接的是that引导的定语从句,再句中做宾语）that they want most.
总之,每个意群断一下,意群就是：主语 谓语 宾语 状语 从句等 .先在用铅笔书上做一下标记,慢漫的就会很熟练了.That's all
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