通过定性和定量这两种研究方法从英语学习自我概念的角度出发研究学习者个体在小组活动中的表现及其原因。研究结果表明,学习者在小组活动中的表现不仅受他们自身的英语学习自我概念的影响,而且也受学习者之间英语学习自我概念的相互比较的影响。此外,学习者个体对任务类型的不同看法也能够影响他们在小组活动中的输出。 Through qualitative and quantitative research methods, this paper studies the performance and reasons of individual learners in group activities from the perspective of self-concept of English learning. The research results show that the performance of learners in group activities is not only affected by their own self-concept of English learning, but also by the mutual comparison of learners’ self-concept of English learning. In addition, different perceptions of task types by learner individuals can also affect their output in group activities.