The use of language to communicate, to think, etc.Language functions inclucle imformative function, interpersonal function, performative function, emotive function, phatic communion, recreational function and metalingual function.

• 用语言交流,思考等。语言功能包括信息功能,人际功能,施为功能,感情功能,交感性功能,娱乐性功能和元语言功能。