中文摘要：

＂有＂的核心信息功能是为叙事语篇（FIS）引入一个指人话题NP,并且NP可连续地表达为后续句的话题eNP,连续的eNP又可形成一个组织语篇的话题链。在FIS中＂有＂是个句法与语篇界面上的轻动词,＂有NP＂是体焦点,＂有NP＂的句义是表示认证。现代汉语无定主语/话题句是＂有NP＂在FIS中高度主观化的产物,是语用组形句。共时上＂有NP＂认证句可给FIS贡献[＋规范]、[＋据实]、NP指称信息的[＋重要]及组织语篇的【Tfl】意义或功能,而相应的无定主语/话题句在语篇里的表现则为[-规范]、[-据实]、[-重要]及【Tinl】。

英文摘要：

The paper describes the information function property of ＂you ＂in FIS discourse,and finds out its functions is that introduces a human participant NP for events,and the NP can be expressed a continuous topic link which can cohere discourse. As for the grammatical property of ＂you＂,it is a Little verb and forms an Aspectual focus along with the NP which represents a syntaxdiscourse interface in discourse. The paper also finds out the sentence of indefinite NP subject is a Subjectivizated allo-syntactic pattern of the sentence of ＂you ＂NP,which can attribute the free,fictional and important style to FIS and so on.