外语课堂中是否应使用学生的母语是外语教学领域争论的焦点。本文从教学及社会语言学角度探讨外语教学中使用母语的益处并给出其对外语教学实践及外语教学改革的启示。 Whether or not to use the students’ mother tongue in foreign language classrooms is the focus of controversy in the field of foreign language teaching. This article explores the benefits of using mother tongue in foreign language teaching from the perspectives of teaching and sociolinguistics and gives its implications for foreign language teaching practice and foreign language teaching reform.