Question

as is known what is known it is known这三个有什么区别 谢谢大家 最好把例子举出来！ 谢谢大家

都是什么从句的呢 谢谢大家

Answer 1

As is known是定语从句，as可以指代后面被修饰的主句。eg. As is known to all, Beijing is the capital of China.（众所周知，北京是中国的首都）
What is known是引导宾语从句的，用what来指代。eg.What is known is that Mary is the best student in our class. （众所周知，玛丽是班上最优秀的学生）
It is known 是用来引导主语从句的。当主语是一个较长的句子时为了避免“头重脚轻”，我们将其“甩”到后面，用it来指代。eg。It is known that New York is the business center in the world. (众所周知，纽约是世界上的商业中心)
翻译成中文的话，这三个表达用法没什么差别
还有亲，你为什么要把这道题归类到数学呢？下次可要注意了哦。期待能为你解决困惑