1 Introduction

English for Specific Purposes (ESP) is an important field in foreign language teaching that has rapidly developed since the 1960s. The ESP test aims to assess learners' language proficiency in a specific professional field, and its validity depends on the authenticity of the test. Improving the authenticity of testing is a key challenge in ESP testing design.

2 Literature Review

The research on ESP testing abroad has gone through a development stage from conceptual definition to exploration of design principles. Douglas and other scholars emphasize that ESP testing measures the ability of subjects to accurately use language in specific domain contexts. Authenticity is the core feature of ESP testing, and Hutchinson&Waters proposed the concept of "real testing", emphasizing the importance of real language materials and testing tasks based on real situations. The growth of domestic ESP testing research is slow, mainly focusing on theoretical and design principle exploration, lacking systematic empirical research. With the deepening of ESP teaching and the increasing demand in the industry, the practical application of ESP testing is of great significance. Selecting authentic language materials that meet teaching objectives and difficulty levels, and designing test tasks that reflect the target language usage context, are two key focuses of ESP testing development. The course of "Pilot Land Air Communication" aims to cultivate pilots' ability to conduct radio communication in English as the working language. Land air communication has the characteristics of accuracy, conciseness, and ambiguity. In the past, teaching and testing used simplified texts and listening and speaking materials, which deviated from real-life scenarios to some extent. This article aims to explore how to construct an ESP testing corpus and develop testing tasks based on real corpus, in order to achieve the connection between curriculum and workplace.

Design of ESP Test Based on Real Corpus

This chapter explores the design of ESP (English for Specific Purposes) tests based on real language data, with a particular focus on the "Pilot Land Air Communication" course as an example. The selection of authentic language materials is crucial for ESP testing, as it can more accurately reflect the subject's ability to use English in the target context. Real language corpus refers to the language used by native speakers for non teaching purposes, which increases the complexity and challenges of language use. Research has shown that authentic language materials can enhance learners' learning motivation, autonomy, and comprehensive language abilities.

4 Conclusion

The importance of ESP testing authenticity was emphasized, and its necessity in practical applications was pointed out. Through a case study of the "Pilot Land Air Communication" course in a flight technology major at a university in North China, this paper explores how to use real language materials to construct an ESP testing corpus, design testing tasks with real and communicative contexts, and proposes ways to improve the authenticity of ESP testing, providing practical guidance for the development and design of ESP testing.