Image schema is a fundamental semantic structure. By taking advantage of image schema, the present paper discusses the semantic structure of the human body word "頭" in Japanese from the perspective of cognitive linguistics, pointing out that the formation of the polysemantic structure of this word is attributed to the devices of metaphor and metonymy with natural associations on the basis of image schema, which plays a pivotal role in the meaning expansion of the phenomenon of polysemy.%意象图式是十分重要的语义结构。以意象图式为支点,从认知语言学角度探讨人体词[頭]的语义结构,可知人体词[頭]多义结构的形成是在具有自然联系的意象图式基础上通过隐喻和转喻手段来实现的。意象图式在多义词词义拓展中起着关键作用。
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