2. Picture books with rich but simple vocabulary: This kind of picture books can help children learn new vocabulary in a relaxed and happy environment.
3. Story-telling picture books: This kind of picture books can guide children to understand and remember words through story lines, making the learning process more interesting.
4. Interactive picture book: This kind of picture book can let children participate in the reading process, for example, by turning pages and puzzles, to improve children's reading interest and hands-on ability.
5. Picture books with audio or reading function: This kind of picture books can provide additional learning resources to help children better understand and remember words.
6. Picture books with clear themes and content close to life: This kind of picture books can help children find practical application scenarios in learning English in their lives and enhance the practicality of learning.
7. Picture book of graded reading system: This kind of picture book can provide suitable learning materials according to children's reading level to help children gradually improve their reading ability.