Objective: To study the suitable style of bilingual teaching as well as its methods in theory large class system and practice small one in college the same time questing for the best way of it .

However, although there has been an increasing amount written about the role of Communicative Activities in language classrooms, there remains a lack of detailed description of its application to large classes, which is often the reality of foreign language teaching in China.

In the view of the current status of English teaching in bigger classes,this paper raises the measures like "multi-teaching methods" and "large class assignment",elaborates their application,and predicts their possible effects,with the intention of accomplishing teaching plan,promoting teaching effects and relieving teaching burden.

This paper tries to make an exposition of the theory of Task-based Learning(TBL) by defining "task" and inquiring into the TBL forms;and makes reflections on it by displaying the practice in large class teaching of college English,summarizing its features and problems arising from the practice.

New methods of improving large-class English teaching are introduced on the basis of the analysis of the practice of teaching large classes.

This paper presents some views on how to teach small classes of English based on the pattern of big classes plus small classes.

This article elaborates that big class bring about low teaching efficiency and individual passiveness.

As a result, there arises the big-class teaching style.