This document is a course work submitted by Ahmadjonova Inoyatxon from the Faculty of Foreign Languages at Kokand State Pedagogical Institute. The topic of the course work is the analysis of H. Sweet Method, focusing on its objectives, functions, and principles. The course work includes chapters discussing the problem of periodization and the role of the Middle English period in the history of the English language, as well as information about Henry Sweet, an English philologist and phonetician, and the London School of Linguistics.