近年来,随着计算机技术的发展以及神经、认知科学的出现,许多学者已经认识到第二语言习得研究可以从语言学、社会语言学、神经语言学、心理语言学、病理语言学、认知语言学和信息处理等方面入手。第二语言习得,顾名思义,指的是“人们逐步提高其第二语言或外语水平的过程”。第二语言习得研究自然是对这一过程所进行的描述、分析和解释,以实现揭示人类语言能力的本质这一终极目标。但是,提高第二语言或外语水平是个十分漫长又复杂的过程,不仅涉及所学的语言系统本身,还受学习者的母语系统、认知心理、个体差异(如年龄、性别、学习态度与动机、学习能力 In recent years, with the development of computer technology and the emergence of neuroscience and cognitive science, many scholars have realized that second language acquisition research can be studied from linguistics, sociolinguistics, neurolinguistics, psycholinguistics, Cognitive linguistics and information processing and so on. Second language acquisition, as the name suggests, refers to “the process by which people progressively improve their second language or foreign language skills.” Second language acquisition studies are naturally descriptive, analytical and interpretations of this process in order to achieve the ultimate goal of revealing the nature of human language competence. However, raising the level of second language or foreign language is a very long and complicated process. It involves not only the language system itself but also the learners’ mother tongue system, cognitive psychology, individual differences (such as age, gender, learning attitude and motivation , Learning ability