语码转换是一种有效的认知、交际和教学策略。从顺应的角度出发，研究大学英语教学中的语码转换策略，有助于进一步探讨外语课堂环境中教师应如何合理地运用语码转换，以提高课堂教学效果。%Code-switching is an efficient cognitive, communicative and teaching strategy. From the perspective of Adaptation theory, the essay probes into the issue of using code-switching strategy properly to improve efficiency in college English teaching.
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