高中英语语法主语从句讲解及练习
高中英语从句类型讲解与训练
从句的分类六大从句的概念主语从句用作主语.That the earth is round is true.宾语从句用作宾语。
Do you know where he lives?表语从句用作表语.My opinion is that you should not go alone.同位语从句用于解释说明前面的名词,与先行词同位或等同的从句叫作同位语从句。
其关联词多为that。
The fact that the earth is round is true.（that从句用于解释说明the fact）定语从句相当于一个形容词，用于修饰前面的名词。
定语从句一般皆放在被它所修饰的名（代）词之后，这种名（代）词就叫作先行词（Antecedent）。
引导定语从句的关联词为关系代词和关系副词。
关系代词在定语从句中可用作主语、宾语、定语等；关系副词在定语从句中用作状语。
The student who answered the question was John.状语从句相当于一个副词，修饰主句中的动词, 形容词和副词, 通常有从属连词引导, 按其意义和作用可分为时间, 地点, 条件, 原因, 让步, 目的, 结果, 方式, 比较.等When it rains, I usually go to school by bus.If he comes tomorrow, you will see him.You must speak louder so that /in order that you can be heard by all.Since /As the weather is so bad, we have to delay our journey.定语从句在句中做定语，修饰一个名词或代词，被修饰的名词, 词组或代词即先行词。
定语从句通常出现在先行词之后，由关系词（关系代词或关系副词）引出。
1、关系代词引导的定语从句关系代词所代替的先行词是人或物的名词或代词，并在从句中充当主语、宾语、定语等成分。
高一英语主语从句试题答案及解析
高一英语主语从句试题答案及解析1. is known to us all is that the 2012 Olympic Games will take place in London.A．It B．What C．As D．Which【答案】B【解析】通过分析句子结构，可知这个句子中包含一个主语从句和一个表语从句。
引导词在主语从句中作主语，且表示什么的含义，故用What。
【考点】主语从句的考查点评：在句子中起主语作用的从句叫做主语从句。
解答这类题，首先要确定从句是什么从句，然后依据相应的语法规则答题。
主语从句中引导词的确定，要看它在主语从句中作什么成分，有没有什么实际意义。
2.we’ll have our sports meet this week the weather.A．If; depend on B．Whether; depend onC．If; depends on D．Whether; depends on【答案】D【解析】考察主语从句。
本句指的whether引导是主语从句whether we’ll have our sports meet this week，if不能引导主语从句。
当单个的主语从句做主语的时候，谓语动词使用单数形式。
句意：这个星期我们是否要举行运动会取决于天气。
故D正确。
【考点】考察主语从句点评：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。
解答这类题目，关键在于分析清楚句子结构。
通过判断引导词在从句中所作的成分及意义，来选择正确的引导词。
连接主语从句的从属连词主要有that, if, whether，和疑问词（what how where when ...)。
that引导表示陈述句的主语从句，if和whether，whether...or not引导表示“是否”，引导一般疑问句。
连接代词主要有who,whom,whose,what,whoever,whomever,whosever,whatever,whichever等。
高中英语主语从句练习及答案
英语练习: 主语从句Ⅰ. 用适当的连接词填空1.They lost their way in the forest and ______made matters worse was ______nightbegan to fall.what, that and连接两个分句，and后面的分句中含有一个主语从句和一个表语从句；主语从句中缺主语，what made matters worse “使事情更糟糕的是…”，后面的night began to fall意义完整，作表语，不需要有意义的引导词，所以填that。
2. There is no doubt, in my opinion, that _________matters is not the quantity, but the quality of the products.There is no doubt that…. “毫无疑问…”，in my opinion 是插入语，that引导的是一个同位语从句。
that同位语从句中又含有一个主语从句:_____matters, matter 是谓语动词，指“有关系，要紧，重要”，其前无主语，所以填what。
3. It doesn’t interest me _______you succeed or not.It是形式主语，替代后面的主语从句。
由or not可知该空填whether。
4. _______the astronaut ate his food in space is _______we want to know.How, what（如果你懂得来龙去脉，可以不看下面的文字）一定要懂得句子作一个成分如主语或宾语时，一定有一个引导词+陈述句，而这个引导词的选择取决于意义和句子成分。
还有一点关键的，不少同学不会断句，根本不知道哪里是从句。
如果一眼看不出来，先找动词，动词要不前面有名词或代词，要不后面有名词或代词，如果是不及物动词，后面就没有宾语。
高中英语2025届高考语法复习名词性从句知识讲解练习
高考英语语法复习名词性从句讲解练习名词性从句是指在复合句中起名词作用的句子，功能相当于名词词组。
名词性从句在复合句中能作主语、宾语、表语、同位语等，根据在句中的语法功能可分为主语从句、宾语从句、表语从句和同位语从句。
一、主语从句【定义】在复合句中，作主语的句子称为主语从句。
【常见的连接词】（连接词在句中不能省略）that, whether, who, what, whatever, whoever, where, when, why, how等。
【用法】连接词 that 引导That we should learn English well is very important.主语从句中 we should learn English well句子完整，不缺成分，用that引导，that 不能省连接词whether，if 引导whether 引导的主语从句可放句首，也可放句中，表“是否”if 引导的主语从句只能引导动词后的宾语Whether I will go or not depend on the weather.It remains to be seen whether / if they can finish the task in time.2.连接代词what, who, which, whose, whatever, whichever，whoever等引导What matters most is your attitude.3.连接副词when，where，why，how等引导How he made it is still unknown.4.it作形式主语为了避免句子头重脚轻，通常把形式主语it放在句首，真正的主语放在句子后面。
常见句型：(1) It is + n.+ that + 句子It is +（a pity / a shame / a fact …）+ that ...(2) It is + adj.+ that + 句子It is +（true / clear / important …）+ that ...(3) It is + 过去分词 + that + 句子It is+ said / announced / expected / believed / hoped… + that ...(4) It seems /appears / happens / turned out that + 句子(5) It hit sb./occurred to sb.that + 句子二、宾语从句【定义】在复合句中，作宾语的句子称为宾语从句。
主语从句超全讲解加练习
主语从句的规律 ：
例4. That whether he will help others is a fact.
正：That he will help others is a fact.
规律四、主语从句中的连词不能重叠使用.
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主语从句的规律 ： 例5. When he will come are a puzzle. 正：When he will come is a puzzle.
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3连接副词when,where, how, why等.
Why they suddenly disappeared still remains a mystery. When they will leave is not decided. Where she is from is unknown. How we will paint the house has not been decided.
规律五、含主语从句的主句谓语动词多用 单数第三人称形式.
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主语从句的规律 ：
1. What he needs is that book.
2. What he needs are some books.
规律六、what 引导的主语从句,可根据 表语决定主句动词的单复数形式.
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注意: 由that 引导的主语从句有时为了使句
子结构平衡, 避免 头重脚轻, 常用 it 作形式主语,
而把从句放在后面. 例如:
1. That he will refuse this piece of advice is impossible. __I_t _is__im__p_o_s_s_i_b_le__th_a_t_h__e_w_i_ll_r_e_f_u_s_e_t_h_i_s_p_i_e_c_e __o_f_a_d_v_i_c_e_._____________________________
高中英语高考复习主语从句翻译练习(附参考答案和知识讲解)
高考英语主语从句翻译练习班级_考号姓名总分1.据估计，上海每年春节要接待几百万游客。
(It)2.还不知道是什么原因造成这次森林火灾。
(cause)3.你要一个人完成那项任务似乎很困难。
(seem)4.无论他为他的父母做什么，都会让他们很开心。
(top)5.据报道，很多大学生想毕业后自己创业。
(report)6.我突然想到我忘记通知他们考试的时间了。
(occur》7.这个课程的创新之处在于它很大程度上尊重了小学生的学习(What)8.据说每天喝适量的葡萄酒可以使人保持年轻。
(stay)9.他从没想到两家公司都会给他工作机会，但是他不知道该如何选择，因为它们都是行业内的翘楚。
(occur)10.随着社会竞争日益加剧,青年人掌握至少两门语言是十分必要的。
(It)11.将来过怎样的生活取决于你自己。
(be up to)12.这个游戏的独特之处在于它让孩子学会如何应对现实生活中的问题。
(What)13.建议该实验在低温下操作。
(suggest)14.任何能够采用新方法解决这道技术难题的人,都将受到奖赏。
(Whoever)15.让这所学校自豪的是超过90%的学生都被重点大学录取。
(What)16.人们普遍认为在公共场合大声说话是不文明行为,应该避免。
(It)17.我从未想到那些偏远山区的孩子们生活条件如此艰苦。
(occur)18.随着科技的发展，电脑是否会取代传统的教学方式成为了当下最热的话题之一。
(substitute)19.因为蓝色是天空和海洋的颜色,所以蓝色自然常和冷静,可靠和喜爱平静生活联系在一起。
(natural)20.但凡家境殷实的单身汉，必然想娶妻成家，这是举世公认的道理。
(It)附：参考答案1.It is estimated that Shanghai receives millions of visitors every Spring Festival.2.What caused the forest fire is still unknown.3.It seems very difficult that you are to complete the task alone.4.Whatever he does for his parents makes them feel on top of the world.5.It is reported that many college students want to start their own business after graduation.6.It suddenly occurred to me that I had forgotten to inform them of the time for the exam.7.What is original in this course is that it respects pupils， study habits to a great extent.8.It is said that drinking a proper amount of wine every day can help one to stay young.9.It never occurred to him that the two companies would both give him a job offer, but he didn，t know which to choose, because both of them belong to the top of the industry.10.It is necessary for the young to master at least two languages with the social competition getting increasingly fiercer11.It's up to you what kind of life you will lead in the future12.What makes this game peculiar lies in that it teaches kids how to handle the problems in real life.13.It is suggested that the experiment should be made under a low temperature.14.Whoever can adopt a new approach to solving the technical problem will/shall be awarded.15.What made the school proud was more than 90% of the students had been admitted to key universities.16.It is generally believed/ considered/ thought that talking loudly in public is uncivilized and should be avoided17.It never occurred to me that the living conditions of the children should be so hard in the remote mountainous areas18.With the advancement of technology, whether computers will substitute for traditional teaching means has become one of the hottest topics nowadays.19.Since blue is the colour of the sky and the sea, it is only natural that it should often be associated with calmness, reliability and preference for a peaceful life.20.It is a truth universally acknowledged that a single man in possession of a good fortune must be in want of a wife.附：知识讲解主语从句就是从句作句子主语,一般放在句首，即主句谓语动词之前。
高中从句练习题及讲解及解析
高中从句练习题及讲解及解析### 高中从句练习题及讲解#### 练习题1. 名词性从句：请将下列句子翻译成英文，并指出其中的名词性从句。
- 他决定去旅行，这让他的父母非常高兴。
2. 定语从句：找出下列句子中的定语从句，并说明它修饰的先行词。
- 那个在图书馆工作的女孩是我的同学。
3. 状语从句：将下列中文句子翻译成英文，并指出其中的状语从句。
- 只要天气好，我们就去野餐。
4. 虚拟语气：请将下列句子翻译成英文，并解释虚拟语气的使用。
- 如果我有时间，我会去学习新的技能。
5. 强调句：将下列句子翻译成英文，并指出强调的部分。
- 正是他，而不是别人，完成了这项艰巨的任务。
#### 讲解1. 名词性从句：名词性从句可以充当主语、宾语、表语或同位语。
在第1题中，"他决定去旅行"是主语从句，"这让他的父母非常高兴"是表语从句。
2. 定语从句：定语从句用来修饰名词或代词，通常由关系代词或关系副词引导。
在第2题中，"那个在图书馆工作的女孩"是先行词，"在图书馆工作"是定语从句。
3. 状语从句：状语从句用来修饰动词、形容词或其他副词，表示时间、原因、条件等。
在第3题中，"只要天气好"是条件状语从句。
4. 虚拟语气：虚拟语气用来表达假想、愿望或不太可能发生的情况。
在第4题中，"如果我有时间"是一个条件状语从句，表示一个假想的条件。
5. 强调句：强调句通过倒装、某些特定结构或某些词的使用来突出句子中的某个部分。
在第5题中，"正是"用来强调"他"。
#### 解析1. 名词性从句：He decided to travel, which made his parents very happy. "He decided to travel" 是主语从句，"which madehis parents very happy" 是表语从句。
高考英语一轮复习：主语从句知识点和语法填空练习题(含答案解析)
高考英语一轮复习：主语从句知识点和语法填空练习题定义：在复合句中，当从句在主句中起相当于名词的作用时，这类从句就叫名词性从句。
功能：和名词一样，名词性从句通常在主句中作主语、宾语或表语。
引导词：1..连词 that \whether\if2.连接代词 what\which \whose\who3.连接副词 when\where\how\why如：1) He said that his friend’s name was Johnson.（宾语从句）2) I wonder if\whether she will be able to come.（宾语从句）3) Do you know what lightning is? （宾语从句）4) What he told me astonished me .(主语从句)5) Can you tell me whose book it is?（宾语从句）6) I forgot when and where I first metDick. （宾语从句）7) Will you please tell me how I can get to the station ? （宾语从句）8) Mother asked him why he had stayed out so late. （宾语从句）9) The question is that he can’t drive acar.（表语从句）10) The idea that we may go fishing tomorrow makes all of us excited.（同位语从句）一．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. 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。
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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.It is important that a student learn English well.It’s clear that they badly need help.It is likely that a hurricane will arrive soon.知识拓展：在“It is necessary / important/surprising/strange/unthinkable/unbelievable/incredible+that 从句”这类主语从句结构中，从句中谓语动词常用“（should）＋动词原形”，形式，即要用虚拟语气,should 可省略。
例如：It is necessary that a college student (should ) master one or two foreign languages. 大学生掌握一两门外语是有必要的。
It is strange that you (should) trust Jane.很奇怪你竟然相信简。
另外，需要注意的是，it作形式主语代替主语从句时，要注意和as引导的定语从句的区别。
试比较：It was reported that the US was under the terrorist attack.As was reported, the US was under the terrorist attack.（2）常见用it作形式主语的复合句结构2. It +系动词+名词+ that从句如：It is a fact that…事实是……It is good news that ………是好消息It is a question that ………是个问题It is common knowledge that ………是常识类似的名词还有：a pity；a wonder；a good thing；no wonder；surprise等。
例如：It is a mystery to me how it all happened.It is common knowledge that the whale is not a fish.It is no surprise that Bob should have won the game.It’s a pity that you missed the film.3. It +be +动词的过去分词+that从句如:It is said that …据说……It is reported that …据报道……It has been proved that …已证明……It must be proved that…必须指出……类似的过去分词还有：known; estimated; expected; believed; thought; hoped; noted; discussed; required; decided; suggested; demanded; made clear; found out,etc.例如：It is thought that he is the best player.It is estimated that the vase is 2000 years old.It has not been made clear when the new road is to be opened to traffic.It is said that he was killed in the earthquake.4.It+特殊词+that从句。
如：It seems （happened / appears / doesn’t matter / makes no difference / occurred …）that …如：It seems that they will win the game.It makes no difference whether he will attend the meeting or not.It does not matter if I missed my train.It happened that I saw him yesterday.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。
注意：引导主语从句，不能用if，只能用whether。
例如：Whether you like him or not is none of my business.Whether we will hold a party in the open air tomorrow depends on the weather. Whether she is coming or not doesn’t matter too much.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, whomever, 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.What I want to know is this.Whatever we do is to serve the people.注：whatever / whoever的功用whatever, whoever在主语从句中不含疑问意义。
它引导主语从句，并在从句中作主语、宾语、表语等。
whatever = anything that; whoever = anyone who。
要注意和whatever, whoever引导的让步状语从句的区别。
如：Whoever breaks the law should be punished. （主语从句）（＝Anyone who breaks the law should be punished. ）Whoever breaks the law, he should be punished. （让步状语从句）（＝No matter who breaks the law, he should be punished. ）4）用连接副词引导的主语从句用连接副词when, where, why, how, whenever, wherever, however等引导的主语从句从句(其连接副词有含义,在句中作状语。
)例如:Where we should leave it is a problem.When they will come hasn’t been made pubic.温馨提示：如果主语从句是由连接代词what, whatever, whoever等引导的，表示的是一个具体的东西或人时，这样的主语从句不能用it作形式主语。
What is worth doing is worth doing well.Whatever was said here has left us much too think.Whoever comes will be welcome.1）随堂练习1. It doesn’t matter _________ you turn right or left at the crossing---both roads leadto the park.A. whetherB. howC. ifD. when2. It suddenly occurred to him ________ he had left his keys in the office.A. whetherB. whereC. whichD. that3. ---- We’ve only got this small bookcase. Will that do?---- No, _________ I am looking for is something much bigger and stronger.A. whoB. thatC. whatD. which4. It doesn’t matter ________ you pay by cash or credit card in this store.A. howB. whetherC. whatD. why5. ________ the polluting factory will be removed from the city is, in fact, ________ the citizens are glad to see.A. That; asB. As; whatC. That; whatD. What; that6. I don’t say I am against Jackie’s plan. But the problem is ___________he does from the serious disease soon.A. what thatB. that whatC. whether whatD. what whether7. “When ________ leave for Japan?”“When _______ leave for Japan is kept secret.”A. they will; will theyB. will they; they willC. they will; they willD. will they; will they8. They lost their way in the forest, and _________ made matters worse was that night began to fall.A. itB. whichC. thatD. what9. It has come to my notice ________ some of you have missed to do anything well.A. whatB. whichC. thatD. when10. _______ we are doing has never been done before.A. ThatB. WhatC. WhichD. Whether2）家庭作业：1. _____ as much as one-fifth of all timber harvested is not used.A. The estimateB. The estimatedC. They are estimatedD. It is estimated that2. _____ some mammals came to live in the sea is not known.A. WhichB. SinceC. AlthoughD. How3. _____ we have achieved is attributed to the guidance of our parents.A. WhoeverB. WhateverC. HoweverD. That4. _____ wealthy does not necessarily mean that a man is greedy.A. For the reason that he isB. Just because he isC. The reason of beingD. That he is5. Although ___ happened in this developed country sounds like science fiction, it c ould occurelsewhere in the world.A. whichB. whatC. howD. it6. _____ she had forgotten to take her notebook.A. That occurred to herB. She occurred thatC. To her that occurredD. It occurred to her that7. I am sure that _____ she said is wrong.A. whichB. allC. thisD. what8. We lost our way in the forest, and ____ made matters worse was that it was getting dark.A. thatB. whichC. itD. what9. _____ or not is still uncertain.A. He’s comingB. If he is comingC. That comingD. Whether he’s coming10. It’s _____ he’ll be able to come.A. doubt whetherB. doubtfulC. doubt itD. doubtful whether11. ______ he is at work in the heart of the big city or at home in the quiet suburb, Di ck’s life is tied to machines.A. WhetherB. TillC. IfD. Unless12. _____ he saw both surprised and frightened him.A. ThatB. WhenC. WhatD. Which13. _____ is warm sunshine.A. What do we all need.B. What all we needC. What we needD. What we all need14. _____ is a pity that he should feel so upset.A. WhatB. ThatC. HeD. It15. _____ a spoonful of soil can tell us so much about the structure and early history of the moon.A. RemarkableB. Quite remarkablyC. It is remarkable thatD. It is remarkable fact that16. _____ you nominate will be elected.A. WhoB. WhomC. WhomeverD. That’s17. _____ book you borrow must be returned within a week.A. WhatB. WhichC. WhicheverD. That’s18. _____ of us gets home first starts cooking.A. WhoB. WhichC. WhicheverD. Anyone19. It’s known to us all ___ a form of energy .A. water isB. that water isC. is waterD. that water to20. It worried her a bit ___ her hair was turning gray.A. whetherB. thatC. whatD. when21.What I say and think ___ none of your business.A. isB. areC. has D have22.___ is known to us all that America is a developed country .A WhichB AsC WhatD It23. ___we’ll go camping tomorrow depends on the weather .A IfB WhetherC ThatD Where24.___ he made an important speech at the meeting was true.A. ThatB. WhyC. WhatD. How答案：1）1-5 ADCBC 6-10 BBDCB 2)19-24 BBADBA。