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公众号it 作形式主语代替主语从句和it引导的强调句的比较分析
【来源：易教网 更新时间：2025-07-11】
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.
That the plates are moving is not beyond dispute.地球板地是在漂移的，这一点毫无争议。
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.
It is not beyond dispute that the plates are moving.
地球板地是在漂移的，这一点毫无争议。
1. 用it 作形式主语的结构
(1) It is ＋名词＋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
It is a pity that...可惜的是……
It is good news that..……真是太好了。
It is no wonder that...难怪…...
It is a good thing that..……真是件好事。
It is a shame that.
遗憾的是……
…真是太不像话了
(2) it is ＋形容词＋从句
It is clear that...显然….
It is likely that...很可能…
It is certain that..可以相信…
It is fortunate that...幸运的是……
It is natural that… 很自然…
It is strange that… 奇怪的是…
It is possible that...很可能…
It is natural that...很自然…
It is strange that...奇怪的是…
It is necessary that...有必要…
(3) it ＋不及物动词＋从句
It seems that… 似乎…
It happened that… 碰巧…
It comes about that...结果是…
It follows that...因此…/由此可见…
It turns out that...结果证明是…
(4) it is＋过去分词＋从句
It is reported that… 据报道…
It is believed that...据信…
It should be noted that...应当注意…
It must be pointed out that...必须指出……
It is generally thought that...人们普遍认为…
It has been proved that… 已证实…
It has been found that...现已发现…
同样可以这么用的动词还有:say, expect, know, estimate, forecast等。
(5)其他结构：
It dawns upon/on sb. that..某人突然想起…
It occurs to sb. that...某人突然想起……
It doesn't need to be bothered that...不必担忧…
It makes no difference that...…无所谓
It is of little consequence that.……无关紧要
Does it matter if he can’t finish the on time.
如果他不能按时完成这项工作，关系重大吗？
It would not matter if these misjudgments were just a matter of people's opinions ．
如果这些误判仅仅是人们的意见所导致,那就不重要了。
Does it really matter who did it?
是谁干的真的很重要吗？
His argument presupposes that it does not matter who is in power.
他的论点前提是谁掌权都无关紧要。
It didn't matter that the weather was bad.
天气不好并没什么影响。
It didn't matter that Ingrid had outdistanced them as a movie star.
作为一名影星，英格丽已经远远地超越了她们，但这却无关紧要。
Does it matter that people don't know this?
人们对此事不知情，这重要吗？
Why does it matter that people are more impressed by the most recent changes?
人们总是对最新改变印象比较深刻，为什么这一点很重要？
It does not matter whether the problem you have relates to food, drink, smoking or just living
不管你的问题是由食物、饮料、吸烟引起，或仅仅是生活引起，都无关紧要。
It doesn't matter whether the paper is thick or thin.
纸张厚薄无关紧要。
It doesn’t matter whether you go or not.
你去不去都没有关系。
It doesn't matter if you win or lose.
你是赢是输都无所谓。
It doesn’t matter when you arrive.
你什么时候来没有关系。
Surely it doesn't matter where charities get their money from: what counts is what they do with it
慈善机构从哪里筹得捐款的确无关紧要：关键是钱是怎么花的。
However, if others benefit in the process, and I get some reward too, does it really matter where my motivation lies?
然而,如果其他人在这个过程中受益,而我也得到了一些回报,我的动机是什么真的重要吗?
He won't brag on himself, but it doesn't matter what he's doing or where he is, he will always stop what he's doing to take care of a child if that child is having a bad day ．
他不会自吹自擂，但他在什么地方做什么事情都无关紧要，只要遇到当天过得糟糕的孩子他都会停下来照顾。
It has not been decided (on) which flight they will take.
他们乘哪个航班来还没有决定。
2. It 作形式主语和it引导强调句的比较
It 作形式主语代替主语从句,主要是为了平衡句子结构,主语从句的连接词没有变化.而it引导的强调句则是对句子某一部分进行强调,无论强调的是什么成分,都可用连词that.被强调部分指人是也可用who/whom.例如：
It is a fact that English is being accepted as an international language.
英语正被接受为国际语言，已成为一个事实。（主语从句）
It is not only your enthusiasm but also your teamwork and good spirits that impress us.
不仅是你们的热情，而且是你们的团队合作和良好的精神给我们留下了深刻的印象。（强调句）
It is Mary and Tom who often do good deeds.
经常做好事的是玛丽和汤姆。（强调句，be动词无单复数）
强调句除掉It is……that,句子结构仍然完整。而主语从句则不可以。
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