The company has done precisely what it had long promised it would not.
既然是what引导的宾语从句,那样what在句中就必须要做成分,可是promised的宾语不是it would not吗?仿佛什么成分都不缺呀?求高手指点。
The company has done precisely what it had long promised it would not.
what it had long promised it would not 这是嵌入式名词性关系分句,would not 后省略了实意动词do (也可以理解为would操作词替代)。what事实上是would not do的宾语。
看一个类似例句:
My brother dances well, which I dont. (可以理解为省略了实意动词dance, 也可以理解为助动词替代。)