精选优质文档-倾情为你奉上Chapter 1 Invitation to linguistics1.1Why study language?1.Language is very essential to human beings.2.In language there are many things we should know.3.For further understanding, we need to study language scientifically.1.2What is language?Language is a means of verbal communication. It is a system of arbitrary vocal symbols used for human communication.1.3Design features of languageThe features that define our human languages can be called design