1, must be American or European (depending on your hobby, if you like American English, find an American foreign teacher, if you like British English, find a British foreign teacher or a European teacher);

2, must be a professional teacher, and have a teacher qualification certificate, foreign teachers should show their teacher qualification certificate;

3, be sure to listen to the teacher's level (including pronunciation, speech speed, intonation, fluency, grammar is standardized);

4. One-on-one teaching is best, because one-on-one teaching is a targeted teaching method, otherwise it will waste a lot of money and time;

Finally, don't find foreign teaching English with local accent. Even if it is free, you can't learn them, so you can learn standard dialect English and you can't change it in the future ~