Theme: Provide the scope of the theme for language learning and subject education.

Discourse: It carries the linguistic knowledge and cultural knowledge to express the theme and provides students with learning materials.

Language knowledge: providing language elements for the composition and meaning expression of a text.

Cultural knowledge: it helps students to lay a humanistic foundation and scientific spirit, and form good character and correct values.

Language skills are the main means for students to acquire information, construct knowledge, express their thoughts and communicate their feelings.

The six elements of learning strategies constitute a closely related structure, which serves the development goal of students' core literacy. The content structure not only contains the basic knowledge and skills necessary for language learning, but also highlights the learning theme and multimodal discourse content that can promote the development of students' mind, emotion, lifelong learning and attitude values.