Usually in daily life, you can have bilingual communication with your child, ask him to help you with something, or tell him what it is in English when dressing him.
The child's imitation ability is very strong, and she will remember it after you say it a few times.
Another effective way is to watch English cartoons with children.
Watching TV plays is definitely a good way to learn English. Many times we recite a lot of words and grammar, but we still can't understand what foreigners say and can't communicate effectively. The main reason is that we are not familiar with the way they speak. Watching TV will cultivate our English thinking. For example, Toy Story, a non-English cartoon, is very good.
You can also make some beautiful cards with your children, with English words written on them. You can read words, let him find cards, or let him find cards to test you, so as to train his listening and speaking ability.