Effect on English Output Competence by Exerting Lexical Chunks Approach in Autonomous Learning Model Research

English language skill is an important part of the comprehensive linguistic competence for college students.Especiallythe language output competence by students Autonomous Learning.During the 70 s of the last century,Becker came up with theterm and and later put forward his Lexical Chunks.Since then,it has been researched increasingly and paid more and more atten-tion to due to the fact that lexical chunks possess the features of both vocabulary and grammar.Teachers should exert lexicalchunks approach,consciously raise students' awareness of lexical chunks,and design various instructional activities based on dif-ferent teaching contents to improve students' language output competence.In this paper,the author carries out an experiment onthe college students from two classes of the same level in Grade one.And compared with the experimental class itself or with thecontrol class,found the students in experimental class have made far greater progress in English speaking and writing.