65806:it has also been proved by scientific research that children wo often eat fish can be cleverer.

问题描述:

65806:it has also been proved by scientific research that children wo often eat fish can be cleverer.
想知道:taht引导的是什么从句?

主语从句,作主语.it为形式主语.
谓语是 has also been proved
经常吃鱼的孩子可能更聪明,这一点已被科学研究证实.