题元理论在现代句法学和语义学研究中有着相当重要的地位和影响。Topic yuan theory in modern sentence semantic study of law and is quite important status and influence. 这一术语起源于20世纪50年代配价语法的问世,其认为,句子是对事件的称名。This is a term originated in the 1950s the advent of valence, they think, sentence is the name of events said. 句子中心是谓词,题元在句子中由名词性成分充当,Sente