The vocabulary of CET-4 is only 4000 words, but there are more phrases and less grammar, but the comprehensive application is more flexible and more questions than that of middle school. The first few books of the new concept correspond to the level of junior high school and senior high school respectively, and the fourth book is close to the level of senior three or graduate students, and can even be used abroad. The two studies have different emphases. College English focuses on comprehensive examination, and the new concept focuses on ability training, which is suitable for high school students to learn by themselves. You can do it step by step