语法高一英语主语从句
高中英语教资语法点-从句
名词性从句 Noun clause（包括主语从句、宾语从句、表语从句和同位语从句）定义：A noun clause is a dependent clause that acts as a noun in a sentence. Noun clauses will contain a subject and a verb, but they cannot stand alone in a sentence. It must always be paired with a main clause.1.主语从句 subjective clause定义：A noun clause is a clause that plays the role of a noun. We use it as subject placeholder.结构：(1)主语从句（subject clause）+谓语（predicate）例句：what she said is right.(2)It 形式主语（formal subject）+谓语（predicate）+主语从句例句：It is important to arrive on time.2.宾语从句 objective clause定义：objective clause is clause that acts as an object in a sentence. It often follows a verb. 结构：{subject} + {verb} +(that可省略)+ {object clause}例句：I know (that) he is lying.I didn’t realize (that) I was late.3.表语从句 predicative clause定义：A predicative clause is a clause that follows a linking verb（系动词）and describes the subject of the sentence. It may be introduced by conjunctions such as that, whether, as, because, A predicative clause may be introduced by conjunctions（连词）, such as that, whether, as, as if, because, or connectives (连接词). Connectives many be conjunctive pronouns (连接代词)(who, whom, what, whose, which, whoever, whatever) or conjunctive adverbs (连接副词) (where, wherever, when, whenever, how and why).结构：Subject+ linking verb+ predicative clause例句：The regulation was that the first examination should be done in writing.Our proposal is that you should join in.Their suggestion was that no one should interfere.注：if不能引导表语从句。
高考英语语法精讲——主语从句
Grammar—the subject clauses语法—名词性从句之主语从句I、概述在复合句中起主语作用的从句叫主语从句。
引导主语从句的关联词有从属连词that、whether，关系代词：who, what, which , whom, whose, whatever, whoever, whomever, whichever；关系副词：when, where, how, why, however, whenever, wherever等。
含有主语从句的句子，谓语动词多用第三人称单数形式。
语序为陈述语序。
That you don’t like him is none of my business.你不喜欢她不管我的事。
What he said is true.Whether the football game will be played depends on the weather.II.分类详解1.从属连词that，whether引导的主语从句。
从属连词that，whether在主语从句中的作用只是引导主语从句，它们在从句中不做成分，不能省略。
Whether she will come or not is still a question. 她是否会来仍是一个问题。
That they will go is certain.他们去是肯定的。
2.it作形式主语引导主语从句。
如果主语从句太长，为避免句子结构头重脚轻，常用it作形式主语，而把主语从句放在主句谓语部分之后。
That引导的主语从句可用it代替，that 不可省略。
用作it作形式主语的结构：(1).It is/was +形容词+that 从句It’s natural that…很自然……It’s obvious that …显而易见……It’s fortunate that …幸运的是It’s (im)possible…（不）可能……It’s unlikely that…不可能It’s strange that…奇怪的是……(2).It is/was +名词+that 从句It’s a pity that…遗憾的是……It’s a fact that …事实是……It’s good news that…是好消息……It’s a wonder that…不足为奇……It’s an honour that…非常荣幸……It’s a shame that…真是可耻……It’s common knowledge that …是常识…(3).It is/was +过去分词+that 从句It’s not known that………不得而知It’s said that…据说……It’s reported that…据报道……It’s not decided that…尚未决定It’s believed that…据认为……It’s announced that…据宣布……It’s suddenly struck me that…我突然想到（感觉到）……(4).It +不及物动词+that 从句It seems that…似乎……It happened that…碰巧……It appears that…看来……It turns out that…结果……It occurs to me that…我突然想起……(5).其他It doesn’t matter …是无关紧要的It makes no difference …毫无区别……It is of little consequence that…无关紧要It is a pity that she has made such a mistake.It's strange that he didn't come yesterday.It is said that he has gone to Shanghai.(=He is said to have gone to Shanghai)It seems that he has seen the film.It occurred to me that I failed in the examination.It doesn’t matter whether he is wrong or not.It makes no difference to me whether you go or not.3、由关系代词引导的主语从句。
【高中英语】高中英语知识点：主语从句
【高中英语】高中英语知识点：主语从句主语从句的概念：如果一个句子在复合句中充当一个主语，那么这个句子就是主语从句。
主语从句通常由从属连词that，whether，if和连接代词what，who，whichwhatever，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。
主语从句用法：1、主语从句的引导词：主语从句通常由连词that和whether、相连接代词或相连接副词以及关系代词型what鼓励：如：thatheisstillaliveisawonder.他还活着，真是奇迹。
whenwearrivedoesn'tmatter.什么时候至没关系。
whatweneedismoney.我们需要的是钱。
whatiwanttoknowisthis.我想要晓得的就是这一点。
whethertheywouldsupportuswasaproblem.他们是否会支持我们还是一个问题。
2、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鼓励的主语从句，通常用形式主语代主语从句：(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：例如：whethertheywouldsupportuswasaproblem.他们与否可以积极支持我们还是一个问题。
itwasaproblemwhethertheywouldsupportus.他们是否会支持我们还是一个问题。
(3)对关系代词型what鼓励的主语从句，通常不必形式主语，总是主语从句放到句首：如：whatweneedismoney.我们需要的是钱。
whatiwanttoknowisthis.我想要晓得的就是这一点。
(4)如果句子是疑问句，则必须用带形式主语it的结构：例如：isittruethatheisthegirl'sfather?他就是那女孩的父亲，就是真的吗？howisitthatyouarelateagain?你怎么又迟到了？3、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鼓励的主语从句轻易坐落于句首，则that无法省略；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则可以省略：例如：thatyoudidn'tgotothetalkwasapity.很惋惜你没回去听到报告。
高中语法主语从句 详解 (4份)
主语从句——Noun clauses as the subject主语从句如果一个句子在复合句中充当一个主语, 那么这个句子就是主语从句。
①That he finished writing the composition in such a short time surprised us all.②What we need are good doctors.③Whom we must study for is a question of great importance.1.主语从句的连接词1).连接词: that, whether①.That he will win is certain.②.Whether he’ll join us in the discussion is of great importance.2).连接代词: who, what, which, whom , whose, whoever, whatever, whichever①.It is clear who is afraid of having a change in land ownership.②.What India needs is a law to make land ownership fairer.3).连接副词: when, where, why, how, how many, how much , how long, how soon, how often①When we’ll start tomorrow will be told soon.②Where we can buy oxen is something we need to find out.③Why he came here is not known.④How we can protect the grain from damp needs to be discussed.【连接词】1. that——That t he earth moves around the sun is well known.2. whether——Whether he will come or not is not known yet.3. who ——Who will be sent there has not been decided.4. what——What you need is more practice.5. which——Which one is the best is not clear.6. when, where ——Where he has gone is a question.7. why, how——Why there is gravity is hard to understand.How he can earn a living in Britain remains a big problem.8. whoever、whatever、whichever可引导主语从句。
【高中英语】高中英语知识点：主语从句
【高中英语】高中英语知识点：主语从句主语从句的概念：如果一个句子在复句中充当主语，那么这个句子就是主语从句。
主语从句通常由下列连词引导：which、if和连接代词what、who、who、who和how、when、where、why和其他副词。
在句子中没有词义，只起到连接作用。
主语从句用法：1.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：他还活着真是个奇迹。
whenwearrivedoesn'tmatter.什么时候到没有关系。
什么是钱。
我们需要钱。
whatiwanttoknowisthis.我想知道的就是这一点。
他们是否支持是个问题。
他们是否会支持我们仍然是个问题。
2、主语从句与形式主语it：有时为了考虑句子的平衡，我们通常在主语从句中使用正式主语，把真正主语从句移到句子的末尾。
有三种情况：(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：（2）对于连接代词（副词）引导的主语从句，可以用形式主语代替主语从句，也可以在句首直接使用主语从句：如：whethertheywouldsupportuswasaproblem.他们是否会支持我们还是一个问题。
他们是否支持我们是个问题。
他们是否会支持我们仍然是个问题。
(3)对关系代词型what引导的主语从句，通常不用形式主语，总是主语从句放在句首：我们需要的是钱。
whatiwanttoknowisthis.我想知道的就是这一点。
（4）如果句子是疑问句，则必须使用带有正式主语的结构：如：isittruethatheisthegirl'sfather?他是那女孩的父亲，是真的吗？你怎么又迟到了？你为什么又迟到了？3、连词that的省略问题：有时引导主语从句的连词可以省略，有时不能省略。
原则是：若that引导的主语从句直接位于句首，则that不能省略；如果受其引导的主语从句位于句末，而正式主语则用在句首，则可以省略：如：thatyoudidn'tgotothetalkwasapity.很遗憾你没去听报告。
高一语法 主语从句
2. _____ made the school proud was ____ more than 90% of the students had been admitted to key universities. （2003上海春） 上海春） 上海春 A. What; because B. What; that C. That; what D. That; because
注意事项
1.主语从句位于句首时必须由连接 主语从句位于句首时必须由连接 词引导。 词引导。 2.主语从句位于句末时引导词 主语从句位于句末时引导词 that可省略。 可省略。 可省略 3.主语从句位于句首时 不能用 主语从句位于句首时,不能用 主语从句位于句首时 不能用if 引导。 引导。 4.主语从句位于句末时 可以用 主语从句位于句末时, 主语从句位于句末时 可以用if 引导。 引导。
4.ቤተ መጻሕፍቲ ባይዱWhat What you need is more practice. 5 Which Which one is the best is not clear. 6 When, where Where he has gone is a question.
7 Why, how Why there is gravity is hard to understand. How he can earn a living in Britain became a big problem.
3. ______ he referred to in his article was unknown to the general reader.（2007 （ 上海） 上海） A. That C. Whether B. What D. Where
高考英语主语从句知识点
高考英语主语从句知识点主语从句是英语语法中的一个重要知识点，也是高考中经常考察的内容之一。
掌握主语从句的使用方法和注意事项，对于提高语法准确性和阅读理解能力都非常有帮助。
本文将介绍主语从句的定义、使用时的注意事项以及一些常见的主语从句的句型。
一、主语从句的定义主语从句是指在一个句子中充当主语的从句。
它通常由连词that, whether或if引导，也可以由关系代词what, who, which,whom等引导。
二、主语从句的使用注意事项1.主语从句的用法多样化，可以表示陈述、疑问、建议、要求等不同的意义。
在使用时需要根据具体语境进行选择。
2.如果主语从句谓语动词是不及物动词，需要用it作形式主语。
例如：It is important that we study hard.3.在表示是否时，通常用whether或if引导主语从句。
例如：Whether you go or not is up to you.4.在表示疑问句时，常用疑问词引导主语从句。
例如：What you said is not clear.5.当主语从句与主句的主语一致时，可以用it作形式主语。
例如：It's a pity that you missed the party.三、常见的主语从句句型1.由that引导的主语从句。
例如：That he is rich is well known.2.由wh-词引导的主语从句。
例如：What she said is true.3.由whether或if引导的主语从句。
例如：Whether he will come to the party remains to be seen.4.由it作形式主语的主语从句。
例如：It doesn't matter whether you come or not.5.句型：It is + adj. + that从句。
例如：It is important that we protect the environment.四、主语从句的练习题1. ______ you have any questions, please feel free to ask. (whether/if)2. ______ he will pass the exam is still unknown. (that)3. ______ are you going to give your presentation? (where)4. ______ I owe you an apology is obvious. (that)5. ______ he is doing now is to prepare for the final exam. (what)答案：1. Whether2. That3. Where4. That5. What通过以上介绍，我们了解了主语从句的定义、使用注意事项以及常见的句型。
高中语法辨析主语从句与表语从句
高中语法辨析主语从句与表语从句在英语语法中，从句是一个重要的概念。
主语从句和表语从句是两种常见的从句类型，在句子中分别作为主语和表语的成分。
本文将对主语从句和表语从句进行辨析，并给出一些实例以帮助读者更好地掌握这两种从句的用法。
一、主语从句主语从句在句子中充当主语的角色，它由连词引导，谓语在从句之后。
常见的引导主语从句的连词有：that, whether, if, who, what, which 等。
下面是一些主语从句的例子：1. Whether he will come to the party is still unknown.是否他会来参加派对还不确定。
2. What she said is completely true.她说的是完全正确的。
3. Who will be responsible for the project remains to be decided.谁将负责这个项目仍有待决定。
从这些例子可以看出，主语从句可以很好地起到句子的主语作用，引导词可以根据具体语境来选择，例如whether用于引导一个陈述性主语从句，what用于引导一个宾语从句等。
二、表语从句表语从句在句子中充当表语的角色，它用来描述或说明主语的身份、特点、状态等。
常见的引导表语从句的连词有：that, whether, if, who, what, which等。
下面是一些表语从句的例子：1. The important thing is that you try your best.重要的是你尽力而为。
2. It doesn't matter who will come with us.谁跟我们一起来并不重要。
3. The question is whether we should continue or not.问题是我们是否应该继续下去。
从这些例子可以看出，表语从句用来对主语进行补充说明，起到强调、解释、评价等作用。
高中英语语法--主语从句复习
主语从句1）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。
主语从句主要有三类：（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.你想获得奖牌看起来是不可能的。
That you are so indifferent bothers me.你如此冷淡使我很烦恼。
That she survived the accident is a miracle.她在事故中幸免于难简直是奇迹。
（2）用连词whether 引导的主语从句:whether有含义(是否),在句中不做成分,不可以省。
例如：Whether she is coming or not doesn’t matter too much.她来不来都无关紧要。
（3）用连接代词引导的主语从句(在由连接代词who, whose, whom, which, what, whoever, whomev er, whichever, whatever引导的名词性从句中，其连接代词在句中起名词性作用，担当一定成分).例如：What you need is more practice.你所需要的是更多的训练。
What I want to know is this. 我想知道的就是这事。
Whatever we do is to serve the people.我们无论做什么都是为人民服务。
（4）用连接副词when, where, why, how引导的名词性从句(其连接副词有含义,在句中作状语。
)eg:Where we should leave it is a problem.When they will come hasn’t been made pubic.他们什么时候来还不知道。
2023年高中英语语法精讲之主语从句详细讲解
2023年高中英语语法精讲之主语从句详细讲解主语从句结构及用法在句子中担当主语的从句就叫做主语从句，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。
通常结构为“引导词 + 主语 + 谓语 + 其他成分"。
一. 概念：在句子中担当主语的从句就叫做主语从句，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。
主语从句使用陈述语序，其通常结构为“引导词 + 主语 + 谓语+ 其他成分", 但当连接代词同时充当从句主语时，其结构为“连接代词 + 谓语 + 其他成分”。
二. 引导词：1. that引导eg. That you are coming to London is the best news I have heard this long time.2. whether引导eg. Whether they would come to conference was a question.3. 连接代词引导: who,whom, whose, what, which, whoever, whomever, whichever, whatevereg. Whoever is top from wins the game when two matched players meet.4. 连接副词引导: therefore, besides, otherwise, however, moreover, still, thus, meanwhileeg. How this happended is not clear to anyone.5. 关系代词型what引导三. 形式主语it:1. 对关系代词型what引导的主语从句，可以使用形式主语。
eg. It is clear enough what he meant.2. 如果句子是疑问句，则必须用带形式主语it的结构.eg. Is it true that all of us need to to conference?主语从句有哪几类如果一个句子在复合句中充当一个主语,那么这个句子就是主语从句。
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6.What I say and think ___ none of your business. A. is B. are C. has D have
-- It’s known to all that the earth is round.
2. That you missed the chance is a pity. -- It is a pity that you missed the chance.
2. 用it 作形式主语的结构
A. It+be+形容词 (obvious, true, natural, surprising, good, wonderful, funny, possible, likely, certain, probable, etc.)+that从句。如：
1. ___ he made an important speech at the meeting was true.
A. That B. Why C. What D. How 2. ___we’ll go camping tomorrow depends on the weather . A If B Whether C That D Where
(2) 连接代词 who, whom, whose, what, which, whoever, whatever, whichever等
What she did is not yet known.
Who will write the poem has not been decided yet. Whatever he did is right.
Subject Clauses 主语从句
1. 主语从句：从句在句中充当主语成分
1). That he will succeed is certain . 2) Whether he will go there is not known . 3) How we can help the twins will be discussed at the meeting.
It is certain that she will do well in her exam.
B. It+be+名词词组 (no wonder, an honour, a good thing, a pity, no surprise, etc.)+that从 句。如： It’s a pity that we can’t go.
C. It+be+过去分词 (said, reported, thought, expected, decided, announced, arranged, etc.)+that从句。如： It is said that Mr. Green has arrived in Beijing. D. It+seem, happen等不及物动词及短语+that从句。如：
It happened that I was out that day. E. It+doesn’t matter (makes no difference, etc.)+连接代词 或连接副词引起的主语从句。如： It doesn’t matter whether she will come or not.
主语从句后置!
为了避免主语冗长,句子头重脚轻,经常用it作 形式主语,主语从句放在后面作真正的主语. 例:
That we shall be late is certain. -- It’s certain that we shall be late. 1. That the earth is round is known to all.
3.___ is known to us all is that America is a developed country____the First World.
a.Which; belong to
c. What; belonging to
b. As, belonged to
d. It; belonging to
1． 引导主语从句的连接词有三类：
(1) 连词that、 whether ：
Whether we go by train or hether he’ll come here isn’t clear. That price will go up is certain.
3) 连接副词 where, when, how, why等。
How this happened is not clear to anyone.
When he will be back depends on the weather. How the pyramids were built is still a mystery.
4. It’s known to us all ___ a form of energy .
A. water is C. is water B. that water is D. that water to
5. It worried her a bit ___ her hair was turning gray. A. whether B. that C. what D. when
改错练习
1.Where shall we spend the holiday isn’t decided. we shall 2.You have made a mistake is a fact. That you have
3.That is certain that we can win.
It is 4.No matter who leaves the room last ought to turn off the lights. Whoever 5.If the policemen will come is not certain. whether
4. 主语从句需注意的问题
导。 2.主语从句中用陈述语序
注 意：
1.“if” 不能引导主语从句，应有“whether”引 3.主语从句的 “that” 一般不能省。
4.“what”引导主语从句时，谓语动词：
1）常与其后的名词作表语一致 2）根据句子的语
境而定。
1.What you left are only several old books. 2.What you said is of great importance. 3.Whether he’ll come here is not clear.