1.___ is known to us all is that China is a developing count

1.___ is known to us all is that China is a developing country.A.Which B.what C.as D.
1.___ is known to us all is that China is a developing country.A.Which B.what C.as D.It2.___ is known to us that China is a developing country.A.Which B.As C.What D.1B 2D.1是表从,为什么不能用It?2是主从,为什么不用what?
火树银花37 1年前 已收到3个回答 举报

天天快乐不难 幼苗

共回答了12个问题采纳率:91.7% 举报

1题如果用it,得说.It is known to us all that China is a developing country.
2题用的就是我改写第一句的句型
看下面你就明白了:
What is known to us all(主语从句)is that China is a developing country
.It(形式主语)is known to us that China is a developing country(that引导主语从句)

1年前 追问

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火树银花37 举报

It,what都能引导名词性从句,怎么用?

举报 天天快乐不难

It 不可以,它不是连词。 what可以。见下例: What he has said(主语从句)sounds reasonable. This is what I bought yesterday(表语从句)。 Let me look at what you have pained(宾语从句)

火树银花37 举报

1因为后面有一个谓语is了,如果填¡t代词作主语又有一个iS谓语,所以填引导词可以这样理解吗?

举报 天天快乐不难

你已经大致明白了。 如果你用it 作形式主语的话,这就是主句中的谓语部分“is known to us all ”,后面的that China is a developing country就是真正主语了. 这样其前的is 就不知道是什么了哈哈。明白?

一起上路 幼苗

共回答了428个问题 举报

1. 如果用It, it 是形式主语,那么后面就是that 引导的真正主语。而这个句子后面有个系动词is,说明前面只能填一个主语从句,what is known to us all, “我们都知道的是....”
2. 而第二句话就是It(形式主语)+谓语+真正主语(从句)的结构。It,what都能引导名词性从句,怎么用?it 是个代词,不是引导从句的词,it在句子中只能做主语、宾语 wha...

1年前

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彷徨的小qq 花朵

共回答了19个问题采纳率:89.5% 举报

第一题,后面那个is是真真的谓语,所以前边就是名词性短语,因而用What。
第二题,缺少主语,因而填It

1年前

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