It’s said that… that引导的从句在句中作_______(成分)

如题所述

是主语,因为引导的是主语从句
参考: 
主语从句
定义:在句子中担当主语的是一个从句,这个从句就叫做主语从句。   
主语从句是在复合句中充当主语的从句,通常放在主句谓语动词之前或由形式主语it代替,而本身放在句子末尾。   
1、主语从句常用it作形式主语,一般常用句型为:
It is+{名词/形容词/过去分词}+主语从句例如:   
It is still a question whether she will come or not.   
It is strange that you should like him.   
It is still unknown which team will win the match.   
另外,还有一些比较多见的结构:   
It turned out that……;   
It has been proved that……;   
It happened/occurred that……;   
It is well-known that……等等   
2. 用it 作形式主语的结构   
(1) It is +名词+that从句   
It is a fact that … 事实是…   
It is an honor that …非常荣幸   
It is common knowledge that …是常识   
(2) it is +形容词+that从句   
It is natural that… 很自然…   
It is strange that… 奇怪的是…   
(3) it +不及物动词+that从句   
It seems that… 似乎…  
It happened that… 碰巧…   
(4) it is+过去分词+that从句   
It is reported that… 据报道…  
It has been proved that… 已证实…   
3. 主语从句不可位于句首的五种情况   
(1) if 引导的主语从句不可居于复合句句首。   
(2) It is said , (reported) …结构中的主语从句不可提前。
例如:   It is said that President Jingo will visit our school next week.   
(3) It happens…, It occurs… 结构中的主语从句不可提前。
例如:   It occurred to him that he failed in the examination.   
(4) It doesn’t matter how/whether …结构中的主语从句不可提前。
例如:   It doesn’t matter whether he is wrong or not.   
(5) 含主语从句的复合句是疑问句时,主语从句不可提前。
例如:   Is it likely that it will rain in the evening?
  
其中(4) it is+过去分词+that从句   
It is reported that… 据报道…  
It has been proved that… 已证实…  这里就是
和(2) It is said , (reported) …结构中的主语从句不可提前。
例如:   It is said that President Jingo will visit our school next week.   
要注意区别 宾语从句是说that成分整个在句子中作宾语 而这个that做主语的

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第1个回答  2019-07-23
在这里whose
birth引导的是非限制性定语从句
。whose
birth作定从中的宾语
whose是定从中的定语
第2个回答  2013-05-16
做主语
因为it's只是形式主语,他后面的从句或者是不定动词才是真正的主语。
这是八年级的重要知识。
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