以学生为主体、多媒体技术及网络为辅助的自主学习环境下的大学英语教学中,词汇常常被忽视,但词汇成为英语学习者提高的障碍。本文提出在翻转课堂理念下,学生通过多媒体和网络习得词汇,掌握相关构词法和词源来扩充词汇量和深度;同时教师也要培养学生词汇学习策略。 Vocabulary is often neglected in college English teaching under student-centered, multi-media technology and network-assisted self-regulated learning environment, but vocabulary has become an obstacle to the improvement of English learners. This paper proposes that under the concept of overturning classrooms, students acquire vocabulary and acquire vocabulary through multi-media and network, and acquire relevant word formation and etymology to expand their vocabulary and depth. At the same time, teachers should also develop students’ vocabulary learning strategies.