在语言运用过程中，状语主位化具有突显小句图形和强调已知背景的作用。
In the process of language using, it is made to give prominence to tlae figure and highlight the known ground.
在小句层面，处所介词短语把时间处所前景化为有标记主位，而把空间处所背景化。
At the clause stratum, a locative prepositional phrase functions to foreground the temporal location as a marked theme while it functions to background the spatial location.
在小句层面，处所介词短语把时间处所前景化为有标记主位，而把空间处所背景化。
At the clause stratum, a locative prepositional phrase functions to foreground the temporal location as a marked theme while it functions to background the spatial location.
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