得体的语言一定是符合客观实际并且适合于一定的语境的,虽然我们说使用语言要力求准确,但准确不等同于精确。因此,有合适的条件下恰当地使用一些模糊限制语,在精确的语言中加入一些语用含糊的成分,或者改变语言的模糊程度,也能够使语言更加得体。本文拟就模糊限制语和语言表达的得体性进行分析,并找出其对外语教学的启示。 Decent language must be consistent with the objective reality and suitable for a certain context, although we say that the use of language to be accurate, but accurate does not mean accurate. Therefore, the appropriate use of some hedges, the inclusion of some pragmatic ambiguity in the precise language, or the change in the degree of language ambiguity can also make the language more appropriate. This article intends to analyze the appropriateness of hedges and expressions, and find out its implications for foreign language teaching.