语言的基本功能在于社会交际，语篇是它的基本单位。
With the text as its basic unit, the essential function of language is to communicate.
语法能力、社会语言能力、语篇能力、策略能力构成了交际能力。
Communicative competence consists of grammatical, sociolinguistic, discourse and strategic competence.
语法能力、社会语言能力、语篇能力、策略能力构成了交际能力。
Communicative competence consists of grammatical, sociolinguistic, discourse and strategic competence.
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