言语角色认知在警察言语交际活动中具有重要意义，是警察履行服务群众、管理社会、打击犯罪职能的基本保证。
The perception of the speech role is quite important in police's social intercourse. It is the basic assurance of serving mass, managing society, attacking crime.
语气类型转移实现言语角色和交流物品之间的语义特征转换，人际投射使隐性的言语功能主观地或客观地显性化。
Mood type shift realizes transference between speech roles and commodities. Interpersonal projection makes implicit speech functions explicit subjectively or objectively.
在语言交流的过程中，交际参与者根据自己的言语角色实施一定的言语功能，实现以信息或物品与服务为交流物的意义交换。
In the process of interaction, communication participants takes on different speech roles and accordingly carry out appropriate speech functions in the exchange of information or goods and services.
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