There is no need to say which is good and which is not. Everyone has different habits and learning styles. Some people may learn nothing in the end even if they devote themselves to very good English training.
Zero-based English should gradually change from letters, words, phrases and sentence patterns, consolidate the foundation of foreign language learning, and naturally transition from quantitative change to qualitative change.
It is suggested that students with weak foundation should lay a good foundation before getting IELTS scores, instead of attending IELTS classes at the beginning. And if you have enough study time, in iBS Foreign Languages Institute, a training school that pays attention to English practice and application, there is a unique pure English environment. Students are immersed in the pure English world all day, away from the interference of life and work, and only concentrate on learning English.
A good full-time English school is different from an amateur training institution. The biggest difference is that English is the only foreign language on campus, which creates a pure English environment, aiming at cultivating students' thinking and forming the habit of speaking and using English.