从提供一个交互、实用的B2B电子商务教学环境目的出发，基于角色互动模式的思路，阐述了B2B电子商务模拟教学系统的设计方法。
Based on role interact mode, the paper discusses the design method of B2B e-commerce simulation teaching system, for the purpose of providing an interactive and practical for students.
单一僵化的教学模式，社会惰化的问题，互动和交流的缺乏以及错误的角色定位严重影响了教学团队的运行效果。
The existing problems, which include inflexible and single teaching model, social loafing, wrong role definition and the lack of interactivity and communication, have seriously influenced its effect.
通过对英语课堂教学的多角度研究，本文最后指出在互动的这种对话式教学模式下，教师的课堂角色应该是多重的。
This thesis, through the multi-perspective study of English class teaching attempts to point out that in teaching by dialogue, teachers' class role should be complex.
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