Abstract: The chunk-extension sentence is a kind of sentence, which is defined with specific conceptual knowledge in the theory of hierarchical network of concepts. This paper introduced some semantic categories of chunk-extension senfences and typical head verbs in them. Through these typical verbs, the eigen semantic chunk and semantic category of a chunk-extension sentence can be activated. After testing with the conceptual knowledge of chunk-extension semantic categories,the semantic structure of a sentence can be revealed. An experiment to automatically analyze some chunk-extension sentences from corpus was done based on a system which is designed for analyzing semantic categories of senfences. hhe precision of experimental result is 71. 29%. The errors arc mainly caused by recognizing head verbs and multi semanti}category of a verb. To analyze chunk-extension sentences well will be help to tackle the puzzle of multiverb in processing Chinese sentences.

Key words: Theory of hierarchical network of concepts, Semantic category, Chunk-extension, Analyzing sentence categories