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.

youdao

我不是主动地知道，交际用的语言单位。

I don't know a unit of language which I use to communicate with you positively.

youdao

从语用学观点来说，言语行为是语言交际的基本单位。

In pragmatics views, speech act is a cardinal points of language communication.

youdao

I don't know a unit of language which I use to communicate with you positively.

我不是主动地知道,交际用的语言单位。

耶鲁公开课 - 文学理论导论课程节选