he did everything he could___the old man.填to save,做目的状语,谁能分析一下这个句子,总感觉少了个词呢.he could 是做定语吧,怎么感觉少了个do 呢,everything是先行词

问题描述:

he did everything he could___the old man.
填to save,做目的状语,谁能分析一下这个句子,总感觉少了个词呢.he could 是做定语吧,怎么感觉少了个do 呢,everything是先行词

你的感觉是对的,这里是省略了do.省略后的句子是对的,也更简洁.
又如:
I'll do everything I can to win.
Rand Paul:"I Will Do Everything I Can" to Prevent Obama From bombing Syria.