作业帮It’s known to all that.改成what is known to all is that 中为什么要加is?我说的意思是把it换成what，that后为什么要加is
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It’s known to all that.改成what is known to all is that 中为什么要加is?我说的意思是把it换成what，that后为什么要加is
It’s known to all that.改成what is known to all is that 中为什么要加is?
我说的意思是把it换成what，that后为什么要加is
It’s known to all that.改成what is known to all is that 中为什么要加is?我说的意思是把it换成what，that后为什么要加is
前面是it做形式主语,真正的主语是后面的不定式.而后面实际是一个表语从句,what引导一个主语从句,在主语从句中what又作句中的主语,把what引导的主语从句看作一个整体,实际上是一个主语,相当于单数,故用单数.
你看
把（what is known to all）看做一个整体（比如A）
没有is 主系表结构不完整
that后面的从句就是A的内容"a"
句子就是 What is known to all is that "a"....
恢复一般形式就是"a" {is} known to all.
因为第一个 is 只是主语从句中的谓语，而第二个 is 才是整个句子结构的谓语，要是不加上去的话，主框架就没有谓语了。
表语从句…
it known to all还是it is known to all
It is well known to all,they have done colour printing in China since the 12th century修改病句
It’s known to all that.把it换成what,that后面为什么要加上is.
It's well-known to all that...请问这句是系表结构还是被动语态? TO ALL在句中做什么成分?为什么?
it is known to all that 和as is known to all that 区别
如何区别As is known to all与It is known to all?
It's known to all that reading -----one's knowledgeA.is increasing B.increases C.has increased D.increased
it is known to all that smoking is harmful to one's health “ that” 作什么成分啊?
As is known to all 与It is known to all 区别?1.( )that the earth is round.A.As is known to all B.As you seeC.It is known to all D.As is seen A B C D的区别?2.Whether way s will be found to stop pullution or not is just ()worries the public.A,why
初中英语填空【一题】it's september 13th,and we're all back to school ,it's good to[] all my teachers and friends again
It's known to all that___light travels faster than__sound.A./ / B.a / C.the the D.the a
It's known to us all that some of the signs are represented----creaturesAfor Bby Cwith Dof
It is known to all that sea water__(contain)salt.
as it is known to all与as is known to all与it is known to all请问,有没有as it is known to all THANK YOU!
It’s known to all that.改成what is known to all is that 中为什么要加is?我说的意思是把it换成what，that后为什么要加is
It’s known to all that.改成what is known to all is that 中为什么要加is?我说的意思是把it换成what，that后为什么要加is
it is known to us all,as is known to us all和what is known to us all有什么区别
it's well known