The Application of Vocabulary Cohesion and Richness in College English Writing under the Flipped Classroom Model

With the rapid development of network communication technology, since beginning 21st century, flipped classroom, as a new hybrid teaching method based on computer has changed traditional and formed process "learning first later". Applied to many fields. In university teaching, classroom is widely used, changing students' passive learning active learning, adjusting time time, emphasizing autonomous greatly improving enthusiasm for learning. From perspective cohesion richness vocabulary in model, this paper examines effect college writing under background method. Through discussion relevant concepts shows characteristics classroom. College English very important subject, mode helped students learn writing. Therefore, focuses application mode. The final results study showed that experimental group scored 88 92 lexical richness, respectively, with an average score 90. It can be seen model helpful improve composition.