1 Introduction

The construction of new liberal arts promotes theoretical innovation and interdisciplinary studies in foreign language disciplines, and cultivates "foreign language+" composite talents. The research on foreign language textbooks is crucial for cultivating international talents and promoting the development of the discipline. Traditional foreign language education theories cannot meet the needs of interdisciplinary integration and need to be innovated within the framework of new liberal arts. The CLIL concept combines language learning with professional content to provide new ideas for the development of ESP textbooks. This article explores the development of ESP textbooks suitable for normal universities under the requirements of CLIL and new liberal arts. Taking "Normal English" as an example, the textbook style, activity design, and writing philosophy are analyzed, and development suggestions are proposed to provide reference for ESP textbook design.

The complementary relationship between CLIL concept and ESP teaching

Explored the limitations of traditional general English teaching and emphasized the importance of combining professional knowledge to learn English. The article points out that ESP (English major teaching) and CLIL (Content and Language Integrated Learning) form a complementary relationship in teaching philosophy. CLIL emphasizes the dual focus of subject content and language learning, while ESP focuses on language needs in specific fields. Applying the CLIL concept to ESP teaching can help universities highlight their professional characteristics, promote the quality and upgrading of foreign language education, and assist in the construction of new liberal arts.

Development of ESP Textbooks from an Interdisciplinary Perspective

Emphasis was placed on the core role of textbooks in teaching and learning, and it was pointed out that textbook development should be based on theoretical guidance to adapt to educational development and innovation. The current ESP textbooks in China face the problems of insufficient integration of language and professional knowledge, as well as systematic lack of content. It is necessary to strengthen interdisciplinary integration, especially in the fields of linguistics, applied linguistics, education, and psychology. The Ministry of Education and eight other departments emphasize the importance of cultivating qualified teachers in normal universities. Therefore, the ESP textbooks of normal universities should highlight the characteristics of teacher education, integrate language content with educational professional knowledge, and enhance students' English proficiency and teacher professional ability.

Textbook Development of Teacher English under the CLIL Concept

The purpose of compiling the textbook "Normal English" is to meet the teaching requirements in the "Guidelines for College English Teaching" (2020), specifically designed for non English major students in normal universities, with the aim of cultivating bilingual teachers to meet the needs of international education. This textbook incorporates the CLIL concept, aiming to enhance the English proficiency of teacher trainees and cultivate their interdisciplinary teaching abilities.

5 Conclusion

In the post methodological era, teaching methods emphasize that teaching should go beyond a single method and carry out practice based on teaching contexts and learners' needs. CLIL, as a post methodological teaching method, provides foreign language curriculum and textbook developers and foreign language teachers with the opportunity to break conventions and the challenge of having no rules to follow. The requirements of interdisciplinary teaching in the construction of new liberal arts, as well as the establishment of foreign language education and teacher education as secondary disciplines, provide a theoretical basis for the development of courses and textbooks that reflect the characteristics of normal universities. The complementary relationship between CLIL and ESP provides theoretical support for achieving the above goals. The development of the "Teacher English" textbook incorporating CLIL concepts, utilizing various methods to implement macro and meso level theories, provides reference and inspiration for ESP textbook development in other fields.