In fact, children are the easiest to accept new knowledge. Once they remember it, they really keep it in mind, so English should be started from dolls.

But at first, children don't know anything, and it's useless to speak grammar.

At the beginning (I mean at the beginning of primary school), we should teach them words (vocabulary is useful for life, and vocabulary is more important than grammar in practical application), and there are some sentence patterns and so on. We don't need to explain grammar and semantics to children, just let them read and read well, and know the meaning of those sentences, so as to give them a sense of language. Cultivate the foundation for children to receive further education.

The real learning of grammar should start from junior high school. In fact, junior high school is only the beginning of contact, and the real understanding should be in senior high school.