合作型写作已在大学英语写作课堂中越来越受到重视和认可。通过对合写者间的互动对话进行定量和定性分析,探寻合写时合作者关注的主要问题有哪些以及解决这些问题的主要策略。研究结果表明,写作内容层面和语言层面的问题是合作者讨论关注的重点,这一点与写作者个体写作时的情况类似。面对合写时的认知冲突,合写者往往通过讨论协商,重建思维,解决分歧。同时,同伴间的互动往往促成“集体性语言建架”的形成,有利于同伴间的互相学习。 Cooperative writing has gained more and more attention and recognition in college English writing class. Through the quantitative and qualitative analysis of the interactive dialogues between co-writers, this paper explores the main issues that the co-writers focus on and the main strategies to solve them. The results show that the writing content level and language level issues are the focus of discussion of collaborators, which is similar to the author writing. In the face of co-writers’ cognitive conflicts, co-writers often reconcile their thinking and resolve their differences by discussing and negotiating. At the same time, the interaction between peers often leads to the formation of “collective language construction”, which facilitates the mutual learning among peers.