Hedges can be used to modify a proposition, or as a strategy by linguistic means in a certain context for specific communicative purposes, such as politeness, vagueness, mitigation, etc.

• 模糊限制语可以对命题进行修正，可利用语言手段策略达到特殊的交际目的，使言语礼貌、含蓄、语气缓和等。