Training to improve English listening ability should be "combined with supplementary practice".

To sum up, the main points are as follows.

1. "Supplement" vocabulary - expand vocabulary.

2. "Supplement" the sense of language - enhance the sense of language.

3. "Complementary" grammar - accumulate common grammar knowledge.

4. "Supplement" cultural knowledge - read more English newspapers and periodicals.

5. "Make up" exam "routines".

6. "Practice" listening - listen more and practice more. Strengthen the learning of basic English knowledge; strengthen English listening training; find an English listening practice method that suits you.