主语从句用法详解(例句丰富)
主语从句用法详解(例句丰富)
一、主语从句的引导词
主语从句通常由连词that和whether、连接代词或连接副词以及关系代词型what引导。
1. that引导
That he is still alive is a wonder. 他还活着，真是奇迹。
That we shall be late is certain. 我们要晚了，这是确定无疑的。
That he should have ignored the working class was natural. 他忽视工人阶级是很自然的。That she is still alive is a consolation. 她还活着是使人感到宽慰的。
That she became an artist may have been due to her father's influence.
她成为画家可能是受她父亲的影响。
That you are coming to London is the best news I have heard this long time.
你将来伦敦是好久以来我听到的最好消息。
That she was chosen made a tremendous stir in her village.
她被挑选上，在她村子里引起很大轰动。
2. whether引导
Whether it will do us harm remains to be seen. 是否对我们有害还要看一看。
Whether they would support us was a problem. 他们是否会支持我们还是一个问题。
3. 连接代词引导
Whoever is top from wins the game when two matched players meet. 两强相争勇者胜。Whichever (of you) comes in first will receive a prize. 无论(你们)谁先到都可以得奖。Whichever you want is yours. 你要哪个哪个就是你的。
4. 连接副词引导
When we arrive doesn't matter. 什么时候到没有关系。
How it was done was a mystery. 这是怎样做的是一个谜。
How this happended is not clear to anyone. 这件事怎样发生的，谁也不清楚。
How many people we are to invite is still a question. 邀请多少人还是一个问题。
Where I spend my summer is no business of yours. 我在哪里过暑假不关你的事。
5. 关系代词型what引导
What we need is money. 我们需要的是钱。
What I want to know is this. 我想知道的就是这一点。
What's done is done. 事已成定局。
What he says is not important. 他说的话并不重要。
What I am telling you is mere impressions. 我和你说的都不过是一些印象而已。
What make the river more beautiful are the lotus plants growing in the water.
为河水增色的是水里的荷花。
What you need is a good-sized canvas bag. 你需要的是一个比较大的帆布袋。
What I am afraid of is their taking him to Portugal. 我担心的是他们把他带到葡萄牙去。
What struck me was that they have all suffered a lot.
给我很深印象的是他们都受过很多苦。
二、主语从句与形式主语it
有时为了考虑句子平衡，通常在主语从句处使用形式主语it，而将真正的主语从句移至句末。这分三种情况：
(1) 对于以连词that引导的主语从句，通常用形式主语代主语从句：
It's a pity that he didn't come.
很遗憾他没来。
It is important that he should know about this. 他必须知道此事。
It's vital that we be present. 我们出席是至关重要的。
It was intended that you be the candidate. 大家的意图是让你当候选人。
It is important that this mission not fail. 这项使命不失败至关重要。
It is essential that a meeting be convened this week. 本周开一次会非常重要。
It is appropriate that this tax be abolished. 废除这个税是恰当的。
It's unfair that so many people should lose their jobs.
竟有这么多人失业这是不公平的。
It's amazing that she should have said nothing about it.她竟未谈及此事令人惊讶。
It's unthinkable that they should deny my request.
他们竟然拒绝我的请求，这是不可思议的。
That they should refuse to sign the petition required great courage.
他们拒绝在请愿书上签字这是需要很大勇气的。
(2) 对于以连接代词(副词)引导的主语从句，可以使用形式主语代主语从句，也可直接在句首使用主语从句：
Whether they would support us was a problem. 他们是否会支持我们还是一个问题。
It was a problem whether they would support us. 他们是否会支持我们还是一个问题。
It remains to be seen whether it will do us harm or good.
它对我们是利是害，还得看看再说。
(3) 对关系代词型what引导的主语从句，通常直接将主语从句放在句首。如：
What we need is money. 我们需要的是钱。
What I want to know is this. 我想知道的就是这一点。
有时也可将助用形式主语。如：
It is clear enough what he meant. 他是什么意思很清楚。
(4) 如果句子是疑问句，则必须用带形式主语it的结构：
Is it true that he is the girl's father? 他是那女孩的父亲，是真的吗？
How is it that you are late again? 你怎么又迟到了？
三、连词that的省略问题
引导主语从句的连词that 有时可省，有时不能省，其原则是：若that引导的主语从句直接位于句首，则that不能省略；若that引导的主语从句位于句末，而在句首使用了形式主语it，则that可以省略：
That you didn't go to the talk was a pity. 很遗憾你没去听报告。(that不可省)
It was a pity (that) you didn't go to the talk. 很遗憾你没去听报告。(that可省)
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名词性从句---主语从句 1. What is needed for the space trip is careful preparation. 2. Her wish is that she can lose weight soon. 3. I think that woman can reach every high achievements in many fields of science. 4. We were very excited at the news that our team had won. 引导名词性从句的关联词可分为三类： 一．从属连词：that（无任何词意） whether, if（均表示“是否”表明从句内容的不确定性） as if ,as though（均表示“好像”，“似乎”）以上在从句中均不充当任何成分二．连接代词：what, who, whom, which，whose, whatever, whoever, whichever(作主宾表定) 三．连接副词：when, where, how, why(作状语) I.主语从句 1.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。 2.位置：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。 3.引导主语从句的关联词： (1)从属连词that,whether,if (在从句中不充当成分，仅起连接作用) That Jack won the match yesterday surprised us. Whether he’ll come here isn’t clear. (此处不能用if) (2)连接代词who, whom, whose, what, which, whoever, whatever, whichever(充当主宾表定) What she did is not known. Whoever comes is welcome. (3)连接副词where,when,how,why(在从句中充当状语) How this happened is not clear to anyone. When the meeting will be held is decided by our manager. 4.有时为了避免头重脚轻，常用it作形式主语，而把真正主语放在句子末尾。 How the book will sell depends on its author. = It depends on its author how the book will sell. That he is the best student in the class is obvious. = It is obvious that he is the best student in the class. 用it作形式主语的几种常见结构： (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 (2) It is ＋形容词＋从句 It is natural that… 很自然It is strange that… 奇怪的是… (3) It is ＋不及物动词＋从句 It seems that… 似乎… It happened that… 碰巧… It ap pears that… 似乎… (4) It ＋过去分词＋从句
主语从句详解及练习-附答案
语法要点剖析 一、名词性从句 主语从句、表语从句、宾语从句、同位语从句，在整个句子中所起的作用，相当于一个名词。因此，这四种从句通称为名词性从句。 引导名词性从句的连接词可分为三类： 连接词：that, whether, if （不充当从句的任何成分） 连接代词：what, whatever, who, whoever, whom, whose, which. 连接副词：when, where, how, why 1. 主语从句 作句子主语的从句叫主语从句。主语从句通常由从属连词that，whether，if 和连接代词what，who，which，whatever，whoever以及连接副词how，when，where，why等词引导。that在句中无词义，只起连接作用；连接代词和连接副 词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。例如： What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。 It is known to us how he became a writer. 我们都知道他是如何成为一名 作家的。 Where the English evening will be held has not yet been announced. 英语晚会将在哪里举行，还没有宣布。 有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。常用句型如下： （1）It + be + 名词+ that从句（2）It + be + 形容词+ that从句 （3）It + be + 动词的过去分词+ that从句（4）It + 不及物动词+ that 从句 另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should) +do”，常用的句型有： It is necessary (important, natural, strange, etc.) that … It is a pity (a shame, no wonder, etc.) that… It is suggested (requested, proposed, desired, etc.) that… 2. 宾语从句 名词句用作宾语的从句叫宾语从句。引导宾语从句的关联词与引导主语从句表语从句的关联词大致一样，在句中可以作谓语动词或介词及非谓语动词的宾语。 1. 由连接词that引导的宾语从句 由连接词that引导宾语从句时，that在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时,第二个分句前的that不可省。例如：He has told me that he will go to Shanghai tomorrow.他已经告诉我他明天要去 上海。 We must never think (that) we are good in everything while others are good in nothing. 我们决不能认为自己什么都好，别人什么都不好。
高中英语主语从句教案
要考试，找戴氏戴氏教育乐山分校主讲教师：徐海燕 主语从句——突破高考 1、名词性从句的概念：名词性从句相当于名词。 主语从句 2、名词性从句种类表语从句 宾语从句 3、引导名词性从句的关系词：①从属连词：that；whether；if；as if（表语从句） ②连接代词：who；whom；whose；what；which ③连接副词：when；where；why；how 以及how组成 的短语：how many；how long；how far。。。 （1）主语从句 Eg：A、What surprised me most was to see some of the village people seated on the benches at the end of room. B、That he will come is certain. C、Whether she’s coming or not doesn’t matter too much. D、Which team will win the match is a matter of public concern. E、Where she has gone is not known yet’ ※主语从句较长时，放句末，用it 作形式主语。 Eg：It was well known that Napoleon always asked the same three questions，and usually in the same order. It is uncertain whether he can come or not. It remains a secret how they climbed up the mountain. It has not been decided when they will leave for New York. 总结：用it作形式主语有以下几种常用句型： ①it + be + 形容词+从句 ②it + be + 名词词组+从句 ③it + be + 过去分词+从句 ④it + seems ; happen ;等不及物动词+从句 直击高考： 1、______leaves the room last ought to turn off the light. A、Anyone B、The person C、Whoever D、Who 2、______the Olympic Games will be held in Beijing is not known yet. A、Whenever B、If C、Whether D、That 3、_____he said at the meeting astonished every present. A、What B、That C、The fact D、That 4、_____we can’t get seems better than ______ we have. A、What ; what B、What ;that C、That ; that D、That ;that 5、_____ troubles me is ______ I can’t learn all these English idioms by heart. A、That ; that B、What ; that C、That ; what D、What ;\ 6、______fashion differs from country to country may reflect the cultural differences from one aspect. A、What B、That C、This D、Which
英语主语从句
主语从句 （一）主语从句的标记主语从句通常由连词that和whether (if)、连接代词或连接副词以及关系代词型what引导。 1. that引导 That he is still alive is a wonder. 他还活着，真是奇迹。 That we shall be late is certain. 我们要晚了，这是确定无疑的。 That he should have ignored the working class was natural. 他忽视工人阶级是很自然的。That she is still alive is a consolation. 她还活着是使人感到宽慰的。 That she became an artist may have been due to her father’s influence. 她成为画家可能是受她父亲的影响。 That you are coming to London is the best news I have heard this long time. 你将来伦敦是好久以来我听到的最好消息。 That she was chosen made a tremendous stir in her village. 她被挑选上，在她村子里引起很大轰动。 2. whether引导 Whether it will do us harm remains to be seen. 是否对我们有害还要看一看。 Whether they would support us was a problem. 他们是否会支持我们还是一个问题。 3. 连接代词引导 Whoever (=anyone who) fails to see this will make a big blunder. Whatever(=anything that) she did was reasonable. 无论什么 Anything that she did was reasonable. Whichever (of you) comes in first will receive a prize. 无论(你们)谁先到都可以得奖。Whichever(=anything that) you want is yours. 你要哪个哪个就是你的。 What do you need? What you need is a good rest. I don’t know what you need? 4. 连接副词引导 When we arrive doesn’t matter. 什么时候到没有关系。 When do we arrive? How it was done was a mystery. 这是怎样做的是一个谜。 How was it done? How this happened is not clear to anyone. 这件事怎样发生的，谁也不清楚。 How did this happen? How many people we are to invite is still a question. 邀请多少人还是一个问题。How many people are we to invite? Where I spend my summer is no business of yours. 我在哪里过暑假不关你的事。 Where do i spend my summer? 5. 连接代词型what引导 What(=the thing that) we need is money. 我们需要的是钱。What do we need? What I want to know is this. 我想知道的就是这一点。What’s done is done. 事已成定局。 What=the thing that he says is not important. 他说的话并不重要。What does he say? What I am telling you is mere impressions. 我和你说的都不过是一些印象而已。What make the river more beautiful are the lotus plants growing in the water. 为河水增色的是水里的荷花。What you need is a good-sized canvas bag. 你需要的是一个比较大的帆布袋。 What I am afraid of is their taking him to Portugal. 我担心的是他们把他带到葡萄牙去。What struck me was that they have all suffered a lot. 给我很深印象的是他们都受过很多苦。（二）
高中英语语法主语从句讲解及练习
名词性从句之主语从句 一、名词性从句概述：在句子中起名词作用的各种从句统称为名词性从句。 根据它们在句中的语法作用，这类从句又可分为主语从句、同位语从句、表语从句和宾语从句。 二、主语从句定义： 在句中起主语作用的从句称为主语从句。 引导主语从句的连接词主要有：单纯连词（that, whether/ if）、连接代词(what, whatever, who, whoever, whom, whose, which, whichever等)和连接副词(when, where, why, how, whenever, wherever, however等)。 1)that引导的主语从句 （1）由连词that引导的主语从句:引导词that无含义/在句中不做成分/不可以省。例如：That you will win the medal seems unlikely.你能得奖看起来不大可能。 That light travels in straight lines is known to all. 众所周知，光沿直线传播。 That you don’t like him is none of my business.你不喜欢他不管我的事。（2）形式主语it替代主语从句位于句首，that引导真正的主语从句会放到句子的后面。常用的句式主要有如下几种： 1.It+ 系动词+形容词+that从句。 如： It is necessary that …有必要…… It is clear that …很清楚…… It is likely that …很可能…… It is important that …重要的是…… 类似的形容词还有：strange; natural; obvious; true; good; wonderful; possible; unlikely; quite; unusual; certain; evident; worth-while; surprising; interesting; astonishing, etc. 例如：It was really astonishing that he refused to talk to you. It is essential that he should be here by the weekend. It seems obvious that we can not go on like this. It is necessary that you （should）master the computer.
高中英语主语从句 知识点讲解
主语从句 在从句中充当主语的复合句，主语即为主句动作的发出者或状态的持有者。有两种形式：直接放句首；it 为形式主语，真正的主语在句子后（为了避免头重脚轻）。主语从句时态不受主句的限制。 （一）连接词引导的主语从句 主语从句在复合句中作主句的主语,引导主语从句的词有从属连词that, whether以及连接代词who, what, which, whoever, whatever, whichever和连接副词when, where, why, how等. 连接词引导的从句 That light travels in straight line is known to all.我们都知道光是以直线传播的。 Whether he will join us is still a question.他是否会加入我们仍是个问题。 连接代词引导的从句 Who will be sent there has not been decided.大家还没有决定谁会被送过来。（主语） What you need is more practice. 你需要更多的练习。(宾语) Whatever we do is to serve the people.我们无论做什么都是为了服务人民。（宾语） Which is the best is not clear.我们不清楚哪个最好。(主语) 连接副词引导的从句 Where he has gone is a question.我们不知道他去哪儿了。（地点状） How he can earn a living in London remains a big problem. 如何在伦敦谋生仍是个大问题。（方式状） When we shall have our sports meet is a mystery. 什么时候会开运动会仍是个迷。（时间状） 注意：在主语从句中，为了避免头重脚轻的问题，常用it为形式主语，真正的主语在句子后。（上述的例子转换） （二）总结it为形式主语的结构： 1)It is + adj. / n. +从句 It is a pity/shame that...遗憾的是…… It is possible that...很可能……
主语从句例句
主语从句 1.That he is still alive is a wonder. 2.That we shall be late is certain. 3.That he should have ignored the working class was natural. 4.That she is still alive is a consolation. 5.That she became an artist may have been due to her father's influence. 6.That you are coming to London is the best news I have heard this long time. 7.That she was chosen made a tremendous stir in her village. 8.Whether it will do us harm remains to be seen. 9.Whether they would support us was a problem. 10.Whoever is top from wins the game when two matched players meet. 11.Whichever (of you) comes in first will receive a prize. 12.Whichever you want is yours. 13.When we arrive doesn't matter. 14.How it was done was a mystery. 15.How this happened is not clear to anyone. 16.How many people we are to invite is still a question. 17.Where I spend my summer is no business of yours. 18.What we need is money. 19.What I want to know is this. 20.What's done is done. 21.What he says is not important. 22.What I am telling you is mere impressions. 23.What make the river more beautiful are the lotus plants growing in the water. 24.What you need is a good-sized canvas bag. 25.What I am afraid of is their taking him to Portugal. 26.What struck me was that they have all suffered a lot. 27.It's a pity that he didn't come. 28.It is important that he should know about this. 29.It's vital that we be present. 30.It was intended that you be the candidate. 31.It is important that this mission not fail. 32.It is essential that a meeting be convened this week. 33.It is appropriate that this tax be abolished. 34.It's unfair that so many people should lose their jobs. 35.It's amazing that she should have said nothing about it. 36.It's unthinkable that they should deny my request. 37.That they should refuse to sign the petition required great courage. 38.Whether they would support us was a problem. 39.It was a problem whether they would support us. 40.It remains to be seen whether it will do us harm or good. 41.What we need is money. 42.What I want to know is this.