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it known to all和as is known to all有什么区别？

来源：百度知道编辑：UC知道时间：2024/05/17 11:12:32

______is known to all,good friends add hapiness and value to life.
答案说是填as，为什么不能填it呢？两者有什么区别

因为填it的话就会有两个主句，前面一句，后面一句，这是不符合语法的。填As的话前面一句就是从句，就可以。单独用都没错

因为这里是为了说明后面的句子所提出的插入语

如果是 as 那就是正如大家所知道的

it 的话是大家都知道

As is known to all 与It is known to all 区别？ It is known to us all,he is a boy.Z这个问题对吗? _is well-known to us all,man can conquer nature. 前面为什么用as而不用 it? __ discovered america is well known to us all. Frozen To Lose It All __ is known to us all, the earth goes around the sun. it is all there is to it.怎样翻译? It's known to us_______there is pollution,there is harm. It might not be known to a lot of people in China that It might not be known to the public that the President was in poor health.