The application of "principles-parameters" in the second language acquisition

Chomsky attempted to establish a grammar system as the basis for linguistic study to reveal the universal and abstract properties of human languages.Principles and parameters were applied to the second language acquisition study as the study of theories related to languages developed in China and abroad in recent years.Based on the contents and study fields of universal grammar,this paper analyzes the universal grammar applied in explaining the grammatical features of L2 acquisition and points out its limitation in explaining the process of L2 acquisition.