Foreign researchers have made great achievements in annotating English text structures with Rhetorical Structure Theory(RST),which provides profound implications for Chinese text annotation.However,there are many differences between Chinese texts and English ones.In fact,Chinese sentence group theory can function as well as RST Theory in annotating Chinese texts.Firstly,the basic framework of RST is quite similar to that of Chinese sentence group theory;secondly,RST theory is less adaptable to Chinese than to English as its analysis values clauses and conjunctions,which are not so salient in Chinese;lastly,texts can be found in Qinghua Treebank whose sentence groups have been marked.