公共英语课堂中教师语码转换是一种普遍现象,师生双方对于教师语言使用的认知以及教师语码转换与学生语言习得之间存在千丝万缕的关联。定性与定量相结合的研究结果表明:教师与学生在教师课堂的语码转换问题上存在认知分歧,且教师语言使用与学生语言习得存在着一定的潜在联系。因此,二语课堂教师语言使用的规范化推广势在必行。 Common English class teachers in code-switching is a common phenomenon, both teachers and students on the use of teachers’ language awareness and teacher code conversion and language acquisition of students are inextricably linked. The results of qualitative and quantitative research indicate that teachers and students have cognitive differences in the code-switching between teachers and students, and there is a potential relationship between teachers ’language use and students’ language acquisition. Therefore, it is imperative to standardize the use of language teachers in second language classroom.