In a conclusion, the function of group cooperation in middle English class deserved the attention of everybody. So it is our duty to try our best to perfect, which will give our children better situation to catch the trend of internation and realize their own value in the future.
II. The Introduction of Group of Cooperation
2.1 Definition and Background of Group Cooperation
Group cooperation is based on a certain case, piding students into some form or group (Haag and Lagunoff  69). According to the common characteristics of the team, teachers contact with each group respectively and continue to teach with arranging a learning task for students. English cooperative learning group is a team work between members in English classroom. Cooperative learning is famous as the most successful and important education reform in recent decades. Group cooperation is no longer a kinder of learning behavior of inpidual, but a collective behavior, which requires students who should take certain responsibilities in the group with deep sense of team benefits. Every member has the duty to develop their team and complete with other teams or groups, meaning that they must fighter together for corporate goal to attain progress. We characterize the level of maximal average cooperation (MAC), the highest average level of cooperation, over all stationary subgame perfect equilibrium paths, which the group can achieve.
   Cooperative Learning Center in University of Minnesota in America devotes effort to research on the new approach to cooperative learning for many years, raising the concept of cooperative learning skills(Liao and Shi 24). In recent years, group cooperation has attracted eyes of experts, on the basis that the group cooperation can have a promotion to the process of English learning, giving a five hand for teachers to active English class with heated discussion and close cooperation between classmates and teachers. So, it is worth deserving experts and teachers devoting their effort to push the process of English teaching in middle school, with which can active the atmosphere of learning English in middle school class.
2.2 The Influence Factors of Team Cooperation
   There are various elements that can affect the application of cooperation activities. But several elements should be stressed, referring to the group cooperation in middle school English class. Firstly, independence must be counted into improving effectiveness of group work. Students need to know the truth that they are not only responsible for their own learning , but also for the rest of their team’s learning, which reflects that unless the members of the group achieve success, otherwise, the members of learning in the form of cooperation is not successful. It proves that every member ought to work hard by themselves, understanding that self-improvement is based on their working hard. Besides, positive cooperation has far-reaching effect on the cooperation of group, beyond our imagination. So the spirit of cooperation gives a chance for the students to make them get into a higher level, which can drive them work hard and become care about team members. And more, the spirit of cooperation during the team members plays a great part in the activity of school life. Therefore, the awareness of cooperation is required during middle school students. Only they know how to handle the disputes between members, can they improve the effectiveness of learning English. What is more, the sense of responsibility in young teenagers’ minds ought to be stressed, regardless of the difference of various characters. Team performance should also be taken into consideration while judging expression or middle school students, which relatively depends on the total task completion. How to judge classmate performance is the key to advancing the group cooperation in English class. As a result, the scores will affect personal records, which play far-reaching impression on the activeness of class. Following is the awareness of competition that exists in children’ s minds, which are the resource to drive them to compete with others and put active impact on their study, providing power for students to go through some tough. Finally, communication and cooperation are one of the focus of team cooperation in middle school during middle school English class, which demanding our classes try their best to cooperate with each other in every aspect. 浅析小组合作在中学英语课堂中的作用(2):http://www.youerw.com/yingyu/lunwen_24884.html