隐喻不仅是一种语言现象，更是人类对世界的一种认知方式。它是人类将对某一事物的理解和认识映射到另一种事物上，通过相似点和象似性将两种事物联系起来，用产生的隐喻意义来理解另一种事物。手语作为一种特殊的人类语言，在表达时也体现出了隐喻现象。聋人可以通过隐喻将一些抽象的事物用手势表达出具体的含义，丰富并扩大手语的交流。从认知语言学的角度对美国手语进行研究，分析美国手语的隐喻现象及其特征，探究美国手语隐喻表达区别于有声语言隐喻表达的独有特点，即象似性和隐喻性相结合产生的双映射隐喻表达特征，旨在通过对美国手语的认知隐喻分析和研究，以促进在认知领域下对美国手语更为深入地研究和探索。%Metaphor is not only a language phenomenon ,but also a cognitive way for human beings to learn the world .It’s a way we understand things in the world by connecting similar points ironically .As a spe‐cial human language ,sign language also demonstrates such a phenomenon of metaphor .Deaf people can explain some abstract things through metaphors by hands to express specific meanings .It enriches and ex‐pands the communication of sign language .By studying American Sign Language from a cognitive perspec‐tive ,this essay concludes that there is an outstanding unique feature in American Sign Language —double mapping metaphor ,which is a special way of expressing people’s understanding of the world through the combination of metaphors and iconicity ,and this is different from the way used in speech languages .The study aims to promote a deeper research of American Sign Language as one special form of human langua‐ges in cognitive field by this cognitive study of mataphors in American Sign Language .
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