中文摘要：

应用语言学研究方法的单一性和局限性使得二语习得研究还停留在对语言习得现象的描述层面。认知神经语言学能够在行为学、心理学、生理学三个层面开展实证研究，将习得过程中学习者的外在表现、心理模型和内在神经机制整合到一个研究体系中，为语言的科学研究提供了方法保障。文章系统探讨了双语者认知神经语言学的研究重点和争议问题，并从神经生理层面对二语习得热点问题进行了粗浅讨论，从而为二语习得研究提供一个新的思路。

英文摘要：

The simplification and limitation of research methodology in linguistics set the language studies at the bas- ic science level. Most researches remain at the plane of descriptive analysis of explicit behaviors of second language learners, Cognitive neurolinguistics, as a fresh interdisciplinary science, may carry out empirical researches at triple levels of behavior, psychology, and physiology. It integrates learners＇ behavioral description, psychological hypothe- sis, and the intrinsic neural mechanism researches into a single paradigm, which methodologically guarantees the study of scientific linguistics. The current study systematically reviews hot issues and disputes in bilingual cognitive neurolinguistics, It also interprets hot issues in the second and introduces a new way to study SLA. language acquisition field with neurophysiologic supports,