英语句子中what引导什么成分?

问题描述:

英语句子中what引导什么成分?
Yet China’s vigour owes much to what has been happening from the bottom up as well as from the top down.

然而中国的活跃多亏了自下而上以及自上而下所发生的一切.what 引导的是宾语从句.
主语:China's vigour=中国的活跃
谓语:owes much to=多亏了
宾语:what.