“信息沟”的产生伴随着外语交际教学的兴起,现在广泛地应用于外语教学中。外语教学的终极目标就是培养学生运用外语进行沟通交流的能力。因此,外语教学能否达到其最终目的主要取决于“信息沟”的存在与否。所以,教师在进行外语教学时,要巧妙地运用“信息沟”原理,达到最终的教学目标。“信息沟”是衡量学生课堂学习效率的重要标志,同时也是判别教师教学能力的一大指标。 “Information Ditch ” is accompanied by the rise of foreign language teaching, is now widely used in foreign language teaching. The ultimate goal of foreign language teaching is to train students to communicate in foreign languages. Therefore, whether foreign language teaching can achieve its ultimate goal depends mainly on the existence of “information groove”. Therefore, teachers in foreign language teaching, we must skillfully use “information groove ” principle, to achieve the ultimate goal of teaching. “Information Ditch ” is an important indicator to measure the efficiency of classroom learning, and it is also a major indicator to judge the teaching ability of teachers.