What is English for Specific Purposes?

This article gives examples of the lessons the author learned from years of teaching ESP. She learned to investigate authentic material thoroughly before making assumptions about learner needs. She tells of occasions on which she relied on the input from textbook writers and job supervisors who made errors in analyzing what students most needed in their language classes. She discussed a learner-focused style, which follows the theory that career development and language development follow the same path, from specific and technical to context- and experience-based.