When watching TV and listening to the radio, you should pay attention to the pronunciation of the host, read silently and practice the feeling of speaking Mandarin. This can also help us pay attention to the corresponding relationship between Putonghua and dialects. In addition, we should look up more dictionaries, and if we don't understand them, we should pay special attention to the polysemy and polysemy of some words. Secondly, I think it is the most effective way to record some words that are often mispronounced and spend time practicing them specially. Finally, insist on daily communication in Mandarin. Because language depends on the environment, in an environment where everyone speaks Mandarin, even if Mandarin is worse, it will gradually be infected.