语言意义建构具有主动性、社会性和情境性，基于语言意义建构的特点重建大学英语课堂就是要改变教师角色和学生角色，建立学习共同体。
To reconstruct college English class based on characteristics of language meaning construction is to change the roles of teachers and students and to set up learning community.
从网络教学产生的背景出发，讨论了网络教学特点、模式和教师角色定位问题。
From the background of teaching on line, the character of teaching on line, the mode of teaching on line, and the character location problem of teacher are discussed.
从网络教学产生的背景出发，讨论了网络教学特点、模式和教师角色定位问题。
From the background of teaching on line, the character of teaching on line, the mode of teaching on line, and the character location problem of teacher are discussed.
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