The Cambridge International English Course (5th edition) is a newly revised version of the Cambridge International English Course, adhering to the widely recognized teaching philosophy of the author Professor Jack C. Richards. It summarizes the classroom practice experience of previous editions worldwide, continues the "communicative teaching method", and organically combines sight, communication, and speaking, allowing students to develop comprehensive skills, especially oral ability, in real communication situations; At the same time, the new version combines the changes of the times, comprehensively updates the discourse materials and layout design, improves the evaluation system, and adds rich and diverse digital teaching resources, bringing students a comprehensive learning experience.