The prototype theory is one of the most important topics in cognitive linguistics, which severely criticizes the classical theoryofcategories proposed by Aristotle more than 2000 years ago.
The theoryof prototype and basic-level categories is based on human being's experience and the main branch of cognitive linguistics on the experiential view.
类典型及基本层次范畴理论基于人类的经验，是基于经验观之上的认知语言学的主要分支。
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"Social form" and "economic social form" are two distinguished categories in Marx's theoryof social form.