Functional Grammar:Introduction M.A.K.Halliday(韩礼德)，a linguist in Sidney University,inherited the traditions of Prague School,widely absorbed the thoughts and ideas of the ancesters and colleagues in linguistics, established his own 'Systemic-Functional Grammar'. Halliday approaches the functional relationship between language and society from angle of anthropology and sociology.He sees language as part of social semiotics,a social interaction and a tool of social communication. He stresses the function of language.Functional Grammar: Introduction M.A.K. Halliday (韩礼德), a linguist in Sidney University, inherited the traditions of Prague School, widely absorbed the thoughts and ideas of the ancesters and colleagues in linguistics, established his own 'Systemic-Functional Grammar'. Halliday approaches the functional relationship between language and society from angle of anthropology and sociology. He sees language as part of social semiotics, a social interaction and a tool of social communication. He stresses the function of language