as is known to..为什么这么用啊?怎么没有了it啊,

as is known to us that为什么不对呢? 是as is known to...还是as iT known to... as is known to everyone对不对,众所周知 China is a developing country,---- is known to all as 和 which 用哪一个 为什么 newton one of the greatest scientists.is known for is known as is known to is known by As is known（在句首时）后面只能跟to As is known to be... as is known to all中的as是什么词性 as is known to..为什么这么用啊?怎么没有了it啊, as is known to all的意思以及as a known to all的意思 有关as is known to us all,it is known to us all 的辨析1.As is known to us all,the earth is round.2.It is known to us all that the earthe is round.3.what is known to us all is that the whale is not fish but mammal.请问这3个分别是什么从 it known to all和as is known to all有什么区别?______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 it is known to all that 和as is known to all that 区别 As is known to us.和It is known to us.后面接什么啊?为啥 It Is known to us 和as is known to us 有什么区别 如何区别As is known to all与It is known to all? As is known to all,___ there is pollution ,there is harm.A.where B.that whereB 为什么 bags and boxes known as white pollution为什么不用to be known as the writer____ his plays got down to doing business the day before yesterday.A.is known to B.knowing C .known for D.knowing as 为什么呢?