请问这句话中的that是引导主语从句吗？

Question

It is generally agreed that the rubbish created by humans today is a worldwide problem.

Answer 1

是的。that引导的是主语从句。
句中it做形式主语，that从句是真正的主语，为了避免头重脚轻而把它放到了后面。原来的语序应该是That the rubbish created by human today is a worldwide problem is generally agreed.
该句句意为：大家普遍认同当今人类制造的垃圾已经成为一个世界性问题。

Answer 2

that the rubbish created ...a worldwide problems 是主语从句，作真正的主语，句首的It 是形式主语。主语从句中带有一个过去分词短语作后置定语，修饰the rubbish。追答

全句汉语意思：人们普遍认为，今天人类产生的垃圾是一个世界性的问题。

Answer 3

① 从形式看，that 引导状语从句。
② 从语义上看，it是形式主语，真正的主语是that引导的从句。