A prepositional phrase is one where a preposition carries an object.

介词结构(也叫介宾词组)是由介词带着宾语构成。

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Text analysis proves that the semantic space of a prepositional phrase can set up a textual frame and further functions as a textual marker.

语篇分析证实，介词短语的语义空间可以营造语篇架构，行使语篇标记功能。

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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。

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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。

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