It is crucial that it is ethically sound.这是什么从句?

问题描述:

It is crucial that it is ethically sound.这是什么从句?
如题,原句中这两个"it“指代的东西是一个.that修饰crucial?这是什么样的从句呢?

这是句强调句:句型结构It is+强调部分+that+从句
It is crucial that it is ethically sound.
可知,强调部分是crucial
所以原句是It is ethically sound crucial.