英语语言学一、语言的特点和功能（Features and Functions of Language）语言：Language is a system of arbitrary vocal symbols used for human communication 1. Features of Language （言的特点）1) Productivity: language users can understand and create unlimited number of sentences with linguistic element. This is a result of the dual structures of every language.多产性，即语言的使用者可以理解并创造无限数量的句子。2) Duality: Language is a system of two structures, ie., the structure of sounds and structure of meaning.二重性，指语言是声音和意义
