Requirement analysis and modeling is an important part of requirements engineering

and how to automate this course has gradually become an important research issue.Facing the difficulties in Chinese natural language processing and requirements analysis

this paper proposes a semi-automated method based on the semantic analysis.The modeling method includes the following steps:word segmentation

class diagram elicitation based on the semantic framework

model improvement with intelligent questionnaire and manual revision.The method can achieve higher accuracy

and it can obviously improve the efficiency of Chinese requirement modeling.This paper designs and implements a modeling tool to provide full support to the proposed process.Finally

we use three practical requirements specifications as show cases to evaluate the result of model elicitation with semantic framework.