The theory of Activities-based Approach by Harmer considers that classroom teaching includes three sections—language input, practice and communication output. Teachers of English should play multiple roles in English spoken lessons, such as“controller”,“assessor” and“prompter”. Transforming teachers’ roles according to specific active contents can stimulate students’ desire of exchanging ideas and achieve the purpose of improving the students’ communicative competence.% Harmer提出的活动教学法认为课堂教学包括语言的输入、练习和交际输出三个阶段。英语教师在口语课教学过程中应充当课堂活动的“控制者”、“评价员”、“提词员”和“参加者”,起到多种角色作用,根据教学内容的具体类型及时变换教师的角色作用,将有效地激发学生的交流欲望,达到提高学生交际能力的目的。
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