High-value expression training materials refer to high-quality materials that can help people improve their communication and expression skills. According to the article "How to Improve Language Ability through TED Speech", high-value expression training materials refer to those high-quality materials that can help people improve their communication and expression skills. These materials include various forms of text, audio and video resources, such as celebrity speeches, professional training courses, movies and documentaries. These materials usually have the following characteristics:

1, high quality: the material is well-made and rich in content, which can arouse the interest of the audience.

2. Authenticity: The topics and scenes involved in the material are authentic and can inspire and think.

3. Diversity: the types and forms of materials are diverse, suitable for audiences of different levels and needs.

4. Interaction: The teaching materials are interactive and participatory, which can stimulate learners' initiative and desire to explore. By using high-value expression training materials, people can improve their language expression ability, thinking analysis ability and speech skills, communicate with others better, and achieve better performance in the workplace and social occasions. Therefore, high-value expression training textbooks refer to those high-quality textbooks that can help people improve their communication and expression skills.