在二语习得过程中,语言表现不可能没有任何偏误。本文通过比较对比分析理论和偏误分析理论的偏误观,评论中介语理论的偏误观,找出其优点和缺陷,并提出一种认知的分析方法,强调心理词汇在二语习得过程中的核心作用。 In the second language acquisition process, language performance can not be without any bias. By comparing the bias view between comparative analysis theory and error analysis theory, this paper comments on the bias view of interlanguage theory and finds its advantages and disadvantages. Then, it puts forward a cognitive analysis method that emphasizes the importance of psychological vocabulary in second language acquisition The central role of the process.