The document discusses English for Specific Purposes (ESP), which focuses on tailoring language courses to meet the specific needs of learners based on their work or study roles, rather than general English language teaching. It highlights the significance of needs analysis, text analysis, and the design of targeted curriculum for professionals in various fields such as medicine and engineering. The document also covers the evolution of ESP research, emphasizing its practical applications and effectiveness in improving learners' communicative competence within their specific contexts.