The purpose of exams is different: Band 4 and Band 6 are important exams in college English education, which are used to evaluate students' English level; TEM-8 is mostly used in the workplace and application for studying abroad, and it is one of the important proofs of English ability.
The examination time is different: CET-4 and CET-6 have two examinations every year, in June and 65438+February respectively; There is only one exam for Band 8, usually in May each year.
Different values: Grade 4 and Grade 6 are used for credit recognition and graduation requirements, and Grade 8 can be used to apply for foreign universities, scholarships and jobs.