长句分析句子成分 What is su
2024-10-25 20:44:39 学考宝 作者：佚名
问题描述
What is surprising is the method psychologists at the University of Texas have come up with to keep girls from developing eating disorders.
是不是 psychologists at the University of Texas have come up with 是修饰 method 的定语从句；to keep girls from developing eating disorders 是否为不定式短语做状语？
那如果截取当中一段 psychologists at the University of Texas have come up with to keep girls from developing eating disorders
改为 Psychologists at the University of Texas have come up with keeping girls from developing eating disorders 是否是完整句子？有无语法错误？
Psychologists at the University of Texas have 为主语；
come up 为谓语；
with keeping girls from developing eating disorders 做 with 介词的宾语。
谢谢老师解答！
老师答疑
黄老师：
该句结构如下：
What is surprising【主语从句充当主句主语】is the method【系表结构充当主句谓语】psychologists at the University of Texas have come up with to keep girls from developing eating disorders【定语从句，其前省略了引导词that，其先行词为method，在定语从句中充当have come up with的宾语】.
其中不定式 to keep girls from developing eating disorders 是从句谓语动词 have come up with的目的状语。
所以如果要截取其中一段并使其结构完整应该是：psychologists at the University of Texas have come up with a method to keep girls from developing eating disorders.
全句的意思是：令人惊奇的是德克萨斯大学心理学家们为了防止女孩子发生饮食紊乱症而提出的方法。
