也就是说，消费者理论基于一种假设，假设我们能够推断出人们从他们的选择中得到什么好处。

That is, consumer theory isbased on the premise that we can infer what people like from the choices theymake.

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但是我们的出发点是假设在这一理论中消费者不犯错误，他们只选择最令他们满意的商品。

But our starting point is to consider theimplications of a theory in which consumers don’t make mistakes, but make choicesthat give them the most satisfaction.

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在理论研究的基础上，本文选择了从消费者角度对品牌延伸的决策及评估进行研究。

Based on the theoretical summary, the paper chooses to research brand extension from the point of consumer.

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