题元角色和论元结构是句法学的重要概念,也是语义学所关注的课题。明确和区分这两个概念有助于把握句子的深层语义特征,同时对于分析句法学中的一些关键问题,如对虚词类it和there的研究,也有很大的帮助。 The role of the title element and argument structure are important concepts of syntactics, and are also topics of concern in semantics. To clarify and differentiate these two concepts helps to grasp the deep semantic features of sentences, and also helps to analyze some key issues in syntax, such as the research on function words it and there.