thematic progression
【正确答案】：The notion of thematic progression concerns the ways that texts develop the ideas they present. More specifically, it concerns where Themes come from and how they relate to other Themes and Rhemes of the text.
Danes suggests that Theme has two functions: (a) connecting back and linking in to the previous discourse, maintaining a coherent point of view; (b) serving as a point of departure for the further development of the discourse. A number of typical patterns of thematic progression have been identified, which include 1) linear thematic progression, 2) Theme iteration, and 3) progression with derived Themes.
