处所环境是小句背景信息的语义表征,大多由处所介词短语加以体现。从语篇角度来看,处所环境有自身的分布规律,从而建构特定的语篇特征。在药品服用方法和旅游城市概况两类语篇中,处所环境的选择存在一定的语类差异,相关的分布计量统计支持了上述的观点。 The premises environment is the semantic representation of the background information of clauses, which is mostly reflected by the place prepositional phrases. From the perspective of discourse, the premises environment has its own distribution rules, so as to construct a specific textual features. There are some linguistic differences in the selection of premises environment in the two methods of drug taking methods and tourist city profiles, and the relevant distribution statistics support these views.