outline 1.Dialect varieties 1)ethnic dialect 2)language and gender 3)Pidgin and Creole 4)bilingualism and diglossia 2.Register:1)field and course 2)mode of discourse 3)tenor of discourse 3.Language and Culture 1)Definition of culture 2)The relationship between Language and Culture 3)Sapir-Whorf Hypothesisoutline 1.Dialect varieties 1) ethnic dialect 2) language and gender 3) Pidgin and Creole 4) bilingualism and diglossia 2.Register : 1) field and course 2)mode of discourse 3)tenor of discourse 3.Language and Culture 1) Definition of culture 2) The relationship between Language and Culture 3) Sapir-Whorf Hypothesis