A special position among the social dialects of English is so-called slang.The most famous of these dialects is Brummie (Birmingham English) .In this term paper was given general overview of English dialects and their role in the linguistics.To research development and features of formation of English dialects.Language dialects of English.Precisely as well dialects during the different periods changed, passed a certain evolution.On the other hand, many sounds said in literary option, in dialects fall.This term refers to the English language as spoken only in England.Professional dialects - kind of social dialect, uniting people of one profession or one occupation.Literary standard of English is no exception: in the 15th century.