本文在母语对英语教学的理论基础上谈论了母语在大学英语教学中的双重作用,提出了母语对英语教学既有积极的一面,也有消极的一面。在大学英语教学过程中,教师应该用辩证唯物主义的观点一分为二地看待母语的作用,既不能过分夸大,也不忽视。 This article discusses the dual role of mother tongue in college English teaching on the basis of the mother tongue teaching theory of English and puts forward that mother tongue has both positive and negative aspects to English teaching. In the process of college English teaching, teachers should consider the role of mother tongue in two points from the dialectical materialist point of view, neither over-exaggeration nor neglect.