How can I learn English well?

First, buy a good dictionary. Usually, we should consciously exercise ourselves to listen, watch and speak more. English is a language. Without a lot of practice, it is impossible. You can't learn anything real just by grammar rules in books. For example, it will be a long transition to buy some simple English and Chinese books at first. In the long run, there will be gains. Your vocabulary must be improved, otherwise you will encounter many new words when learning grammar, which will affect your study. The most important thing is that when you have a large vocabulary, you will feel depressed immediately, so the words must be broken. Finally, just stick to it, as Adu's song says, stick to it.