Authors: Yan Wang and Xiaolan Lei
Abstract: About the specialized discussion of anti-language，the scholars generally think that it is originally appeared in Halliday＇s paper in 1976 named American Anthropology . AAVE ，at the edge of anti-language，is always in a state of hot discussion. But seldom from economics of language, especially the externality of language．Thus this paper tries to explore it from a new perspective-- externality of language looking forward to rediscover the value of AAVE.
Keywords: anti-language；AAVE；economics of language； externality of language.