输入理论强调输入是语言学习的前提,要求教学中保证输入的量。输出理论强调输出的最终结果,要求尽量把输入转化为输出,实现语言教学的终极目标。运用“优化输入,分层输出”模式可以改善大学英语教学现状,通过“优化输入”增加学生输入的量与质,“分层输出”使输出活动分层次地循序而进,最终全面提升大学英语教学效果。 Input theory emphasizes that the input is the premise of language learning, teaching the amount of input required. Output theory emphasizes the output of the final results, requiring input as much as possible into the output, the ultimate goal of language teaching. Using “Optimize Input and Layered Output” mode can improve the current situation of college English teaching and increase the amount and quality of student input through “Optimize Input ”, so that the output activities can be hierarchically sequenced , And ultimately enhance the effectiveness of college English teaching.