It may be related to the low attention paid to phonetic symbols by school teachers and students themselves. In textbooks, children usually learn two phonetic symbols in one unit. Children lack systematic induction and arrangement for this kind of learning. It is necessary for children to understand the whole phonetic family and every factor from a holistic perspective, strengthen their understanding of factors and phonetic symbols, and match them with targeted phonetic exercises. For details, please consult Elite Education on the 3rd floor, No.404 changshou road, Putuo District, where there are specialized English teachers to provide one-on-one and one-on-three learning.