虽然合作教学法证明是很有用的教学法，但在口语教学课堂上仍存在很多障碍，直接表现在无法彻底改变学生在课堂上保持“缄默”的现象。

Though cooperative learning approach has been proved to be a very useful teaching method, there exist some obstacles, which lead to "mute", in applying cooperative learning approach in oral class.

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