In the narrative text, the information that constitutes the main line of the event by directly describing its progression belongs to the category of foreground information; the information that elaborates or modifies the primary narrative line without carrying it forward (e.g., the scene, the relevant factors of the event, etc.) is background information 1 (see Hopper, 1979; Tomlin, 1985). Foreground information and background information not only represent the difference in textual function, but also correspond to a series of syntactico-semantic features. Hopper and Thompson’s (1980) study of transitivity correlates the information property of the clause with its syntactic features, maintaining that clauses expressing foreground information tend to exhibit a number of high-transitivity properties and those expressing background information show a series of low-transitivity properties. 2