Social use of language or Pragmatics involve three major communication skills: using language for different purposes, changing language according to the needs of a listener/reader or situation, and following rules of conversation. About the latter, it is possible to say it involves
requesting something, saying good-bye.
talking differently to a baby than to an adult, rephrasing when misunderstood.
promising something, taking turns in conversation.
taking turns in conversation, rephrasing when misunderstood.
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Aguarde, enviando solicitação...