大学教学改革要求建立基于网络和多媒体的、以学生为主体的教学模式,但现今很多的大学英语课堂仍以教师为主角,学生参与语言学习活动的自主性未能充分发挥,师生之间缺少信息交流和反馈。根据建构主义理论,要解决这些问题,教师需要转变角色,成为学生学习的组织者、引导者、合作者和评价者。 University teaching reform requires the establishment of a student-centered teaching model based on internet and multimedia. However, in many college English classes today, teachers are still the leading role. The autonomy of students participating in language learning activities has not been fully realized. There is a lack of teachers and students. Information exchange and feedback. According to the constructivist theory, to solve these problems, teachers need to change their roles and become organizers, leaders, collaborators, and evaluators of student learning.