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IHymes’s words (1979), there are ‘___ without whichthe rules of grammar would be useless’, which simply means, besides grammaticalrules, language use is governed by rules of use, which ensures that the desiredor intended functions are performed and the language used is appropriate to thecontext.
·rules of forms
·rules of use
·forms
·functions

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出自：佳木斯大学语言治疗学

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