A Study on the Application of Register Theory in Foreign Trade English Correspondence Teaching in Vocational Colleges

With the guidance of systemic functional grammar of register theory, this paper makes a quantitative analysis on the foreign trade English correspondence writing of the students in two classes majored in customs clearance in Shandong Agriculture and Engineering University, and tries to make the conclusion that mastery of the register characteristics of foreign trade correspondence English helps to quickly improve the skill to write foreign trade English letter of the students in vocational colleges, hoping to provide a reference for the teaching of foreign trade correspondence writing in vocational colleges.