The coming of an Internet era provides a new direction for the transformation and development of education.In this con-text,online classrooms have emerged.Learning in online classrooms provides flexibility and convenience for students to arrange their learn-ing time and places,which to some extent improves the efficiency of English learning.Based on this,this paper suggests diversified and multimodal teaching strategies and combination of web-based learning and teaching environment from the perspective of college English teaching and students'self-directed learning to improve the efficiency of students'self-directed learning,and optimize online classroom teaching content and to promote college English teaching and learning.