语言是人类区别于其他生物最本质的属性。英汉语言都是世界上重要语言,其应用范围和使用人数都居于首位。题元理论对句子成分如何获得题元有着很好的解释力,因此本文借用题元理论中的题元准则和投射原则分析某些英汉句子表达,并作出合理解释。 Language is the most essential attribute of human beings from other creatures. Both English and Chinese languages ​​are important languages ​​in the world, and their applications and numbers of people both occupy the first place. The problem-yuan theory has very good explanatory power on how to obtain the title elements in the sentence elements. Therefore, this paper analyzes some English-Chinese sentence expressions and makes reasonable explanations based on the problem-solving principle and projection principle.