What is known to us that the light travels faster than sound
3个回答

你的题目有问题,What is known to us that the light travels faster than sound不是一个完整的句子.应该是What is known to us “IS” that the light travels faster than sound.

语法:

主语:我们所知道的(事情事实),

谓语:是,

宾语:后面那个句子(事实)

宾语从句,还是叫表语从句.反正谓语后面整个是个完整的句子