Before choosing, you should be clear about your goals and needs. Do you want to improve your spoken English, or do you want to pass the English exam and get certified? Knowing your own needs, you can choose training courses in a targeted way.
When choosing a training course, we can better understand the quality and teaching effect of the training course by looking at the evaluation and feedback of the students.
In order to better understand the teaching quality and teaching style of the training class, it is suggested to make an appointment for the audition class. In the audition class, we can judge whether the teacher is rigorous and responsible, whether the curriculum meets our own needs, whether the students' evaluation is good and so on.
In short, to choose a good English training class, we should integrate various factors, make clear our own needs, consider the time and place, understand the teaching methods and costs, check the word of mouth, make an appointment for an audition course, and finally choose a training class that suits us, so as to better improve our English level.
If you have enough study time, I still suggest that you choose a full-time English learning institution, because it can slowly build your language learning system for you from the beginning of basic learning, and finally make your English foundation very solid.