高中英语语法：主语从句的考点分析与专项训练

高中英语语法之名词性从句在句子中起名词作用的句子叫名词性从句(Noun Clauses）。

名词性从句的功能相当于名词词组,它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词性从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。

一、主语从句33.some people regard as a drawback is seen as a plus by many others.A.WhetherB.WhatC.ThatD.How考点:本题考查主语从句。

句意：一些人眼中的缺点是别人眼中的优点。

解析：从句中缺宾语，只能用B.what来引导. C.中的That引导主语从句不做成分。

1．—How about camping this weekend,just for a change?—OK,you want.A．whichever B．however C．whatever D．whoever答案：C考点：本题考查引导词。

解析：句意：“这个周末野营怎么样，来点新鲜的？”“好啊，按你的意思吧！”根据语境分析出后者支持前面的提出的观点。

9．It is uncertain side effect the medicine will bring about,although about two thousand patients have taken it.A．that B．what C．how D．whether答案：B考点：本题考查主语从句的引导词。

解析：根据句意：尽管大约有两千名病人服用过这种药物，但是，它会带来什么样的副作用还不确定。

side effect意思是“副作用”，还原主语从句中的主干是the medicine will bring about ______side effect。

故选择what，形容词“什么样的”，起修饰作用。

【精讲精练】主语从句是一个重要的语法点，主语从句是中学阶段的重点语法项目,也是高考的热点之一。

高中英语主语从句专项练习标题：高中英语主语从句专项练习一、主语从句概述主语从句是在句子中起主语作用的从句，是英语语法中的重要内容之一。

掌握好主语从句的用法和规则对于理解英语句子的结构和意义至关重要。

二、主语从句类型1、That引导的主语从句：例如，That you are coming to England is great news.2、Whether引导的主语从句：例如，Whether they agree or not remains to be seen.3、疑问词引导的主语从句：例如，How this happened is not clear.4、名词性从句简化形式的主语从句：例如，It is a pity that you should have missed the lecture.三、主语从句练习1、（） + that从句A. 祈使句B. 感叹句C. 陈述句D. 疑问句答案：C. 陈述句解析：主语从句需要用一个完整的句子作为主语，因此只有陈述句符合要求。

2、主语从句的语序通常是（）A. 疑问式B. 感叹式C. 陈述式D. 祈使式答案：C. 陈述式解析：主语从句的语序通常是陈述式，即主语在前，谓语在后。

3、下列句子中，不是主语从句的是（）A. When he will come is not known.B. What he wants is a book.C. Whether they will come or not depends on the weather.D. You are what you wear. 答案：D. You are what you wear. 解析：D项是一个名词性从句的简化形式，而不是真正的主语从句。

四、主语从句注意事项1、主语从句的时态规则：主语从句的时态要与主句的时态保持一致。

2、主语从句的语气规则：使用虚拟语气的情况，如It is necessary that...，常用于描述感情、态度等。

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。

主语从句讲解及练习语从句主语从句(Subject Clause)定义:在复合句中充当主语的句子叫做主语从句.第一部分：常规主语从句，即句子在复合句中充当一个主语主语从句的时态：不受主句的时态影响和限制。

（1）That he finished writing the composition in such a short time surprised us all.（2）Whether we will go for an outing tomorrow remains unknown.（3）Who will be our monitor hasn't been decided yet.（4）Whom we must study for is a question of great importance.（5）What caused the accident remains unknown.（6）Whatever you did is right.（7）Whose watch was lost is unknown.（8）What we need is time.（9）What we need are good doctors.小结:（1)引导主语从句连词有that,whether,who,what,whatever 等（2)连词位于句首不能省略（3)主语从句大多数情况下视为三单,但也有例外,如例9 第二部分：为了防止句子头重脚轻，通常把形式主语it 放在主语位置，真正主语搁置于句末（1）It is certain that he will win the match.（2）It is true that he has made a very important discovery in chemistry.（3）It is very likely that they will hold a meeting.（4）It is strange that he should do that.（5）It is important that we all should attend the meeting.（6）It is strange that the man should have stuck to his silly ideas.（7）It is a pity that we won't be able to go to the south to spend our summer vacation.（8）It is still a mystery what caused the accident.（9）It is said that he has gone to shanghai.(=He is said to have gone to shanghai)（10）It is known to all that the gun powder was first invented by the Chinese.（11）It is suggested that the work should be done with great care.（12）It seems that he has seen the film.(=He seems to have seen the film)（13）It happened that the two cheats were there. (=The two cheats happened to be there)小结:（1)以that 引出的主语从句,常以形式主语it引导. It is +形容词/名词/某些动词ed + that 从句.（2) 在有些that从句中要用虚拟语气(should+do/should+have done)例句4,5,6,11.主语从句与宾语从句两者的用法和在句中的作用是不同的，下面从它们的各自用法，介绍：）~一．主语从句主语从句定义: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。

高中主语从句练习题及讲解答案# 高中主语从句练习题及讲解答案## 练习题1. 题目一：尽管他很年轻，但他已经是一位成功的企业家了。

- 例句：_________ he is very young, he has already becomea successful entrepreneur.2. 题目二：无论你什么时候来，我都会在这里等你。

- 例句：_________ you come, I will be here waiting for you.3. 题目三：他相信他能通过这次考试，这让他的父母感到非常高兴。

- 例句：He believes that he can pass the exam, which makes his parents very happy.4. 题目四：我们不知道他是否已经完成了作业。

- 例句：We don't know _________ he has finished his homework or not.5. 题目五：她害怕黑暗，这是众所周知的。

- 例句：She is afraid of the dark, which is _________.## 讲解主语从句是作为动词或介词的宾语的从句，它通常位于句首。

主语从句可以由连接词that, if, whether等引导。

- that引导的主语从句：用来陈述一个事实，通常可以省略。

- if/whether引导的主语从句：用来表达“是否”，通常不能省略。

## 答案1. 答案一： Although/Though _________ he is very young, hehas already become a successful entrepreneur.- 讲解：这里使用了“Although”或“Though”来引导让步状语从句，表示尽管他年轻，但他已经成功。

2. 答案二： Whenever _________ you come, I will be herewaiting for you.- 讲解：“Whenever”引导主语从句，表示无论何时你来。

高考专项练习之主语从句1. ________it says is ________ it fights it，and that is not the same thing at all．（）A. All what；thatB. That；thatC. That；whatD. What；that2. But______ theygrow they make sure that what is left in the ground after harvesting______ a natural fertilizer for the next year's crop．（）A. whatever； becomeB. whichever； becomeC. whatever； beco mesD. whichever； becomes3. ________ worries me is the way he keeps changing his mind．（）A. ThisB. ThatC. WhatD. It4. ____ is obviously right is to give all children equal opportunities to develop their special gifts．（）A. WhichB. WhatC. ThatD. It5. ____makes this shop different is that it offers more personal services．（）A. WhatB. WhoC. WhateverD. Whoever6. After Yang Liwei succeeded in circling the earth，_____ our astronauts desire to do is walk in space．（）A. whereB. whatC. thatD. how7. ________ she couldn't understand was ________ fewer and fewer students showed interest in her lessons．（）A. What； whyB. That； whatC. What； becauseD. Why； that8. ____caused the accident is still a complete mystery．（）A. WhatB. ThatC. HowD. Where9. _____he said _____ to hurt you．（）A. That； didn't meanB. Which； meantC. What； didn't meanD. As； meant10. _____________ he said at the meeting astonished everybody present．（）A. WhatB. ThatC. The factD. The matter11. ______ you don't like him is none of my business．（）A. WhatB. WhoC. ThatD. Whether12. _____________ leaves the room last ought to turn off the lights．（）A. AnyoneB. The personC. WhoeverD. Who13. It has been proved_____eating vegetables in childhood helps to protect you against serious illnesses in later life．（）A. ifB. becauseC. whenD. that14. ________wants to stay in a hotel has to pay their own way．（）A. AnyoneB. The oneC. WhoeverD. Who15. ________ is known to us all is that the 2016Olympic Games will take place in Rio de Janeiro．（）A. ItB. WhatC. AsD. Which16. _________ we can't get seems better than __________ we have．（）A. What，whatB. What，thatC. That，thatD. That，what17. ________ we'll go camping tomorrow depends on the weather．（）A. IfB. WhetherC. ThatD. Where18. ________ made the school proud was________ more than 90% of the students had been admitted to key universi ties．（）A. What； becauseB. What； thatC. That； whatD. That； because19. ____________has helped to save the drowning girl is worth praising．（）A. WhoB. WhoeverC. AnyoneD. The one20. ______ the ancient Egyptians built the pyramids puzzled people for centuries．（）A. WhetherB. WhatC. HowD. Where21. ______ anyone should want to kill her was unbelievable．（）A. WhetherB. ThatC. WhatD. If22. ________ we need are better laws to protect the environment．（）A. WhichB. ThatC. WhatD. How23. __________they need __________ something to make them healthy and strong．（）A. What； areB. That； areC. All； isD. All which； is24. ___________has helped to save the drowning girl is worth praising．（）A. WhoB. The oneC. AnyoneD. Whoever25. It is becoming a threat to the Chinese language and culture _____ some people can't write Chinese characters pro perly．（）A. whichB. thatC. whetherD. how26. It is still unclear _____ the man didn't speak the truth．．（）A. thatB. howC. whenD. why27. _________ was determined at the meeting is that the government will develop a new educational system．（）A. WhatB. HowC. WhenD. That28. It came as a great surprise to the public ______ some state leaders'cellphones might have beenmonitored by America's National Security Agency．（）A. thatB. whetherC. whatD. which29. is where he gets all his money from．（）A. What I can't understand itB. That I can't understand itC. What I can't understandD. Which I can't understand30. ________ impressed me was the boy's ability to deal with this kind of trouble．（）A. ThatB. WhoC. WhetherD. What31. It is natural _____ children are curious about the world around them．（）A. thatB. whetherC. whatD. how32. It's better to understand _____ you don't understand when you read a story．（）A. howB. whetherC. whatD. that33. ________ surprised us most was _______ he hadn't been outdoors for 20 years．（）A. That； thatB. That； whatC. What； thatD. It； that34. Didn't it occur to you ______ we could have solved the problem in an easier way？（）A. thatB. whetherC. howD. why35. ______ surprised me most was that we had met each other here before．（）A. ThatB. ItC. WhichD. What36. ______ shocked the world was that North Korea carried out its nuclear bomb test again．（）A. WhichB. WhateverC. WhatD. That37. It is obvious to the students ______ they should get well prepared for their future．（）A. asB. whichC. whetherD. that38. ________ you can succeed in the end will mainly depend on _________ you do and _________ you do it．（）A. If； what； whyB. Whether； what； howC. Whether； how； whyD. That； whether； how39. It remains to be seen_______ the newly formed committee's policy can be put into practice．（）A. thatB. whichC. whatD. whether40. ____ made me more unhappy was ___ the boy asked my friend to be his girlfriend and she agreed．（）A. What； thatB. That； thatC. What； whetherD. It； that41. ____ he will offer us enough help doesn't matter a lot to our success．（）A. IfB. WhetherC. BeforeD. How42. ______ he is remembered for is his humorous style when he is talking．（）A. WhereB. ThatC. WhatD. How43. ______ you said at the meeting is good for the company．（）A. WhenB. HowC. ThatD. What44. is willing to volunteer in the 2022 Beijing Winter Olympics is welcome to join us．（）A. WhateverB. WhoeverC. WheneverD. Wherever45. _____the author of the book intends to express is not the loneliness of beingtrapped on a deserted island but the faith in overcoming any problem ahead．（）A. ThatB. HowC. WhatD. Why46. you choose to live there are always going to be disadvantages．（）A. WhateverB. WhereverC. WhicheverD. Whoever47. __________ Tom didn't pass the exam made his parents very upset．（）A. WhichB. WhatC. ThatD. When48. fashion differs from country to country may reflect the cultural differences from one aspect．（）A. WhatB. ThatC. ThisD. Which49. In today's China，_____ breaks the law is to be punished．（）A. wheneverB. whateverC. whereverD. whoever50. In today's China，_____ breaks the law is to be punished．（）A. wheneverB. whateverC. whereverD. whoever【答案】1. D2. C3. C4. B5. A6. B7. A8. A9. C 10. A11. C 12. C 13. D 14. C 15.B16. A 17. B 18. B 19. B 20.C21. B 22. C 23. C 24. D 25.B26. D 27. A 28. A 29. C 30.D31. A 32. C 33. C 34. A 35.D36. C 37. D 38. B 39. D 40.A41. B 42. C 43. D 44. B 45.C46. B 47. C 48. B 49. D 50.D【解析】1.答案D．分析句子结构可知，"and"连接两个并列的句子，前句中的谓语动词为"is"，"________it says"为主语从句，主语从句中动词"says"后缺少宾语，又不指人，因此需用疑问代词"what"引导；"what it says=all （that）it says"；"________ it fights it"为表语从句，表语从句中意思已完整，且不缺少成分，因此用连接词"that"引导；因此D项符合语境，故选D．它所说的就是它（这款牙膏）能对付它（口臭），然而这根本不是一码事．本题考查名词性从句．解答此类题目首先要读懂句意和分析句子结构，其次判断是名词性从句中的哪一种从句，然后再分析从句中的成分，如果从句中缺成分且不指代人时一般用what．2.答案：C．根据句意可知第一空whatever=no matter what表示"无论什么"，引导让步状语从句，whichever 也可以引导让步状语从句，但是前面需要有一定的范围．第二空，主语是what引导的名词性从句，所以谓语动词用单数形式．故选C．但是无论他们种什么，他们都确保收获后留在地面的东西可以成为第二年庄稼的天然的肥料．本题考查whatever引导让步状语从句的用法，和whichever的区别；第二空考查主谓一致，注意分析句子结构，判断是主语从句．3.答案：C 考查主语从句．分析句子可知____worries me为主语从句，从句中缺少主语，所以用what来引导，且what在从句中作主语．that引导主语从句不做成分；It 和this不是名词性从句的引导词，所以答案选C．使我担心的是他不断改变主意的方式．本句是一个主语从句，解题时要分析句子的结构判断是什么从句，然后根据不同从句的解题技巧选出不正确的答案．主语从句属于名词性从句中的一种，也是学生们需要掌握的一种基本的英语句型，引导名词性从句的连接词选择是考试的重点，学会分析从句的句子成分是解决名词性从句的解题关键．4.答案：B．分析句子成分结构可知，____ is obviously right是从句作主语，is to give…是系表结构．主语从句中，is right是从句系表结构，所以从句缺主语．which引导主语从句时，意为"哪一个？"，语意不符，排除A．引导主语从句时，that是连词，不作任何成分，排除C．若选D，则本题为it is obviously right is to give…，此时，第二个is是多余的．句子需要变成it is obviously right to give…时，语法结构才正确，故排除D．what引导主语从句是代词，作从句主语、宾语、表语和定语等，一般表示"…的事情"．故本题选B．给所有孩子们平等的机会来发展他们独特的才能很明显是争取的事情．本题考查名词性从句引导词，解答词类题目，关键要划分从句的成分，确定引导词所作的成分，若是从句缺主语宾语等，一般用连接代词what，which，who，whom和whose等．若从句不缺主语宾语时，一般用连接副词when，where，why和how，或者使用连词that，whether和if．5.答案：A 考查主语从句．分析句子可知____makes this shop different 是主语从句，从句中缺少主语，根据句意：使这个商店与众不同的是它提供更多的个人服务．所以答案选A．B，C 指人；C任何的东西，意义不符合句意．使这个商店与众不同的是它提供更多的个人服务．本句是一个主语从句，解题时要分析句子的结构判断是什么从句，然后根据不同从句的解题技巧选出不正确的答案．主语从句属于名词性从句中的一种，也是学生们需要掌握的一种基本的英语句型，引导名词性从句的连接词选择是考试的重点，学会分析从句的句子成分是解决名词性从句的解题关键．6.答案：B 分析句子结构可知，空处是引导主语从句，从句缺少宾语，用what引导．故选B．在杨利伟成功绕地球飞行后，我们的宇航员渴望的是在太空行走．名词性从句缺少主宾表或定语用what．7.答案是A．考查名词性从句，分析句子结构"________ she couldn't understand"是一个主语从句，从句中缺少understand的宾语，所以用what引导，what做从句的宾语；fewer and fewer students showed interest in her lessons是一个表语从句，根据句意：她不能理解的是为什么越来越少的学生对她的课表现出兴趣，所以用why来引导．故答案选A．她不能理解的是为什么越来越少的学生对她的课表现出兴趣．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语，那么就找到了解题的路子．名词性从句的解题可以从分析从句的句子结构开始，看从句是否缺少主语、宾语、表语、定语等句子成分．然后具体问题具体分析．8.答案：A分析句式可知，"____caused the accident"是主语从句，在从句里缺少主语，所以用what引导．how和where 在句子里做状语，不符合．that引导主语从句不做成分，故答案选A．什么造成这起事故依然是个谜．考生须掌握名词性从句的特征，注意分析句子结构并在具体语境中灵活使用．9.答案C 考查主语从句．分析句子可知___he said是主语从句，从句中缺少主语，所以用what来引导；mean to do是固定短语"有意做某事"．句意：他说的话无意伤害你．故答案选C．他说的话无意伤害你．本句是一个主语从句，解题时要分析句子的结构判断是什么从句，然后根据不同从句的解题技巧选出不正确的答案．主语从句属于名词性从句中的一种，也是学生们需要掌握的一种基本的英语句型，引导名词性从句的连接词选择是考试的重点，学会分析从句的句子成分是解决名词性从句的解题关键．10.答案A 考查主语从句．本句是一个主语从句，he said缺少宾语，所以用what来引导；that不能在名词性从句中做成分；所以答案选A．他在会上的发言令在场的所有人吃惊．本句是一个主语从句，解题时要分析句子的结构判断是什么从句，然后根据不同从句的解题技巧选出不正确的答案．主语从句属于名词性从句中的一种，也是学生们需要掌握的一种基本的英语句型，引导名词性从句的连接词选择是考试的重点，学会分析从句的句子成分是解决名词性从句的解题关键．11.C 考查名词性从句．分析句子可知这是一个主语从句you don't like him，从句中不缺少句子成分，所以用that来引导，what，who，引导主语从句，连接词在从句中都要做成分；whether引导意思是"是否"，所答案选C．你不喜欢他和我无关．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语，12.答案C 考查名词性从句，连接代词whoever可以引导名词性从句，并在从句中作主语，相当于any person who 或the person who，意为"一切…的人"．而anyone和the person均非连词，不能引导从句，who leaves the room last意为"某个最后离开房间的人"，与题意不符，如果要选anyone或the person，都必须在它们后面再加上引导定语从句的关系代词who．如果要选who就体现不出"无论谁"的含义了，故答案选C．无论谁最后一个离开房间都应该关掉灯．本句是一个名词性从句，解题时要分析句子的结构判断是什么从句，然后根据不同从句的解题技巧选出不正确的答案．同位语从句属于名词性从句中的一种，也是学生们需要掌握的一种基本的英语句型，引导名词性从句的连接词选择是考试的重点，学会分析从句的句子成分是解决名词性从句的解题关键．13.答案：D．考查it的用法．题干中it是形式主语，真正的主语是后面的主语从句，根据意思可知该从句不缺少任何成分，故选that，if是否，because表原因，when当从句中缺少时间状语时才可用．据证实，儿童时期吃蔬菜能够帮助保护你在人生的后期抵抗疾病．本题考查it的用法．在主语从句中，当主语从句很长时，为了避免头重脚轻，故将主语从句放到句子的后面，主语就有it代替作形式主语．14.答案：C 由句子结构可以看出该句子属于复合句：因为有两个谓语动词wants和has．所以应该存在一连词来连接句子．可以是who 和whoever，从句意来看，要表达无论是谁，最佳答案只能是whoever，也就是说即引导主语句子还要充当从句的主语．无论谁想住在旅馆都必须按自己的方式付钱．了解句意，分析句子结构，同时分析从句中的句子成分，结合句意，做出正确的选择．15.答案：B根据句式结构可知，________ is known to us all 是主语从句，在从句中缺少主语，所以用引导词what，意思是众所周知．如果选A，则改为It is known to us all that the 2016Olympic…如果选C，As is known to us all，the 2016Olympic…众所周知，2016奥运会将在里约举行．考生需对主语从句的用法以及特点掌握并在具体语境中使用．16.答案：A分析句式可知，_________ we can't get 是主语从句，从句中get缺少宾语，故用what；__________ we have从句中也缺少宾语，用what，故答案为A．我们得不到的似乎比我们有的更好．考查在答题时首先要分析句子的结构，弄清从句中缺少什么成分，再接合语法知识选择正确答案17.答案是B．本题考查主语从句中的引导词；题干中depends on前为主语从句，if通常不引导主语从句放在句首，排除A；根据句意，我们"是否"去野营取决于天气，whether（是否），可以引导名词性从句，故选B；that 在名词性从句中不担任成分，无意义，故排除C；从句中不缺地点状语，排除D．我们明天是否去野营取决于天气．名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．18.答案为B．本题考查名词性从句中引导词的运用．what在名词性从句中可做主语、宾语、表语或定语，表示"所、什么"；that在名词性从句中不担任成分，无意义，除宾语从句外，that不可省略；题干中was前面的主语从句中缺少主语，故第一空选what；was后面的表语从句从意思到成分都是完整的，故第二空用that，答案是B．使这所学校感到骄傲的是超过90%的学生都被重点大学录取了．名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．19.答案：B，whoever"无论谁"强调任意性，相当于anyone who，who含有疑问的意思，例如：who will come is not known．谁要来还不知道．考查主语从句，句意：无论谁帮助救了这个溺水的女孩都值得表扬．who和whoever引导主语从句：who说的是"谁"，whoever说的是"无论谁"相当于anyone who．20.答案：C．根据句意可知让人们困惑的事情是古埃及人是怎么建筑金字塔的，用how引导主语从句，whether 是否，不符合句意；what什么，在主语从句中作主宾表，where哪里，意思不符．故选C．几个世纪以来，古埃及人是怎么建筑金字塔的让人们很困惑．本题考查主语从句，从句意和句子成分分析有助于答题．21. 答案：B．根据句意和结构可知这句话使用主语从句，从句成分和意思都是完整的，用that引导，that不作成分，不能省略，whether是否，意思不符，what应该在主语从句中作主宾表，if不能引导主语从句，故选B．任何人都竟然都想杀了她这是令人难以置信的．本题考查主语从句，首先从句意和句子成分分析这是主语从句，然后再分析主语从句内容判断是否缺成分，缺少什么成分，这样有助于答题．22.答案C．通过分析可知本题是一个主语从句，从句中谓语动词为need，后面缺少宾语，因此要用连接代词，排除B、D；which意为"哪一个"，意思与语境不符；what意思为"…东西，事情"．我们所需要的是一些保护环境的更好的法律．本题考查主语从句．主语从句题是高考常考的内容，注重考查考生对主语从句的理解和分析，要求考生平时注意分析句子成分，做题时还要结合所学语法知识进行判断，做出正确的选择．23.C 考查从句．分析句子可知all 是先行词they need 是定语从句，all在从句中做宾语，所以省略了that；all是主句的主语，根据句意：他们所需要的只是使他们健康强壮的东西．所以谓语动词用单数形式，故答案选C．如果第一个空用what引导主语从句正确，但是第二空要用单数形式，所以不能选A．D选项中all做先行词不能用which来引导．他们所需要的只是使他们健康强壮的东西．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语，24.答案：D考查名词性从句．句意：无论是谁，挽救这个溺水女孩，都值得赞扬．_____has helped to save the drowning girl 是一个主语从句 whoever相当于一个先行词加一个关系代词．whoever=anyone who．whoever 引导主语从句，A选项是疑问句，B C 选项缺少关系代词，故答案选D．无论是谁，挽救这个溺水女孩，都值得赞扬．本句是一个主语从句，解题时要分析句子的结构判断是什么从句，然后根据不同从句的解题技巧选出不正确的答案．主语从句属于名词性从句中的一种，也是学生们需要掌握的一种基本的英语句型，引导名词性从句的连接词选择是考试的重点，学会分析从句的句子成分是解决名词性从句的解题关键．25.答案是B．考查名词性从句，分析题干可知it 是形式主语，真正的主语是some people can't write Chinese characters properly，此句中不缺少主语或者宾语，所以关系词选that．一些人不能正确地写出汉字正成为中国语言和文化的一个威胁．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语26.答案：D．根据It is still unclear说明it 是形式主语，而真正主语 the man didn't speak the truth可知句子不完整，这个男人为什么不说出真相，缺原因状语，故选D．仍然不清楚这个男人为什么不说出真相．本题考查主语从句的连接词，在充分分析it 形式主语的基础上再结合语义便能选出正确答案，同时要注意与it is clear that句型不要混淆．27.答案：A．根据is that the government will develop a new educational system可知前面是主语从句，主语从句中缺主语，再结合句意，在会议上什么被决定了，故选A在会议上被决定的是，政府将开发新的教育系统．本题考查主语从句，在在充分分析句型基础上，同时了解句意的基础上便不难选出此题答案．28.答案是A．考查名词性从句，主语是一个句子some state leaders'cellphones might have been monitored by America's National Security Agency．分析此句不缺少主语和宾语用that来引导，it 是形式主语，所以答案选A．一些国家领导人的手机可能已经被美国的国家安全局监视令公众惊讶．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语29.答案是C．本题考查主语从句；动词is前为主语从句，从句表达"疑问"，而that引导名词性从句不表示疑问，排除B；A项宾语重复：what在从句中做宾语，而it也在从句中做宾语，故排除A；which 在名词性从句中表示选择，本题无选择的含义，排除D；what在从句中做understand的宾语，故选C；我不能理解的是他从哪里得来的这些钱．名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．30.答案：D．根据was the boy's ability to deal with this kind of trouble可知前面是主语从句，主语从句中缺 impressed的主语，再结合句意，给我留下深刻印象的是这个男孩处理这类麻烦的能力，故选D给我留下深刻印象的是这个男孩处理这类麻烦的能力．本题考查主语从句，在在充分分析句型基础上，同时了解句意的基础上便不难选出此题答案．31.答案是A．考查名词性从句，本句的主语是句子children are curious about the world around them，句中不缺少主语或者宾语用that引导，it是形式主语，所以答案选A．孩子们对于周围的世界感到好奇是很自然的．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语32.答案：C．根It's better说明it 是形式主语，而真正主语 to understand _____ you don't understand 可知句子不完整，理解你不理解的东西，缺understand 的宾语成分，故选C．当你读一个故事的时候，你最好去理解好你不理解的东西本题考查宾语从句的连接词，在充分分析it 形式主语的基础上再结合语义便能选出正确答案，33.C 考查名词性从句．分析句子可知________ surprised us most 是主语从句，从句中缺少主语，所以用what来引导；he hadn't been outdoors for 20 years是表语从句，从句中不缺成分，所以用that引导，故答案选C．最使我们惊讶的是他已经20年没出门了．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语，34.答案：A本句中it是形式主语，真正的主语应该是后面的主语从句，从句中不缺少任何成分，也没有疑问，所以用连接词that，故本题选择A．难道你没有想起我们本可以更简单地解决这个问题？在考查名词性从句时，要分析从句的各个成分，然后根据是否缺少成分，确定适当的连接词．35.答案D．分析句子结构可知，整个句子的谓语动词是"was"，表语为"that we had met each other here before"，"______ surprised me most"为主语，从句中动词"surprised"前缺少主语，不指人，因此应用"What"引导主语从句，该句可以作为一个固定句型记忆"What surprised me most was that+从句"，故选D．最让我感到惊讶的是我们之前已经相互见过面的．本题考查名词性从句．解答此类题目首先要读懂句意和分析句子结构，判断是哪一种从句，然后分析从句中的成分，如果从句中不缺主宾表等成分，则应根据句意来锁定连接词．36.C 考查名词性从句．分析句子可知______ shocked the world 在句中做was的主语，是一个主语从句，在这个主语从句中shocked是谓语动词缺少主语，所以用what来引导，what在主语从句中做主语．在名词性从句中，which是指在某个范围中的"哪一个"；whatever"任何的…"that在句中不做成分；故答案选C．令世界震惊的是朝鲜再次进行了核试验．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语，37.答案：D．考查名词性从句中的主语从句用法．此处要分析句子结构，看出it为形式主语，代替they should get well prepared for their future，并且本句意思完整，不缺成分，所以用that来引导；故选D．很明显，对于学生来说他们应该为自己的未来做好充分的准备．本题考查名词性从句，要会分析句子的成分，并且掌握that的用法．38.答案是B．本题考查名词性从句中的引导词．depend on前面的主语从句中缺少引导词，if通常不引导主语从句，故排除A；that在名词性从句中不担任成分，无意义；题干中需要表示"是否"，故排除D；第二空是介词on后面的宾语从句；从句中缺少的是do的宾语；how为副词，不做宾语，排除C；what在名词性从句中可做主语、宾语、表语或定语，表示"所、什么"；故第二空用what；第三空后面是on后面的并列的宾语从句，表示"如何"做这件事，故答案是B．你最终能否成功主要取决于你做了什么以及如何做的．。

高三主语从句练习题1. 主语从句的定义及用法主语从句是指在句子中担任主语成分的从句。

它通常由连接词引导，常见的连接词有：that, whether, if, who, whom, which, what, when, where, why等。

主语从句的主要作用是代替或引导句子的主语，使句子表达更加清晰和准确。

2. 主语从句的句型转换主语从句的句型转换主要包括将主语从句变为强调句、感叹句和倒装句。

下面是一些转换的例子：例1：That he didn't attend the meeting is a great surprise.（原句）It is a great surprise that he didn't attend the meeting.（强调句）例2：Who will win the game is still uncertain.（原句）What a surprise it is that who will win the game is still uncertain!（感叹句）例3：What I want is to travel around the world.（原句）To travel around the world is what I want.（倒装句）3. 主语从句的练习题下面是一些高三主语从句的练习题，供同学们进行练习：练习题1：_______________ is not yet clear whether the school will be closed due to the snowstorm.A. ThatB. ItC. ThisD. What练习题2：_______________ is important to learn a foreign language well in today's globalized world.A. ThatB. ItC. WhatD. If练习题3：_______________ will solve the problem remains unknown.A. WhenB. WhatC. WhoD. How练习题4：_______________ he said was completely true.A. ThatB. WhatC. WhoD. Which练习题5：_______________ makes the sun rise in the east and set in the west?A. WhatB. WhoC. WhenD. Why练习题6：_______________ they will come to the party is still uncertain.A. IfB. WhetherC. HowD. When练习题7：_______________ she can't come to the meeting is a pity.A. WhatB. ThatC. WhetherD. If练习题8：_______________ goes wrong, don't hesitate to call me.A. WhoeverB. WhateverC. WheneverD. However练习题9：_______________ is so kind of you to help me with my homework.A. ItB. ThatC. WhatD. How练习题10：_______________ will happen remains to be seen.A. ThatB. ItC. WhatD. If4. 练习题答案练习题1：B. It练习题2：B. It练习题3：B. What练习题4：A. That练习题5：A. What练习题6：B. Whether练习题7：A. What练习题8：B. Whatever练习题9：A. It练习题10：B. It5. 总结通过做以上的高三主语从句练习题，我们可以进一步掌握主语从句的用法和句型转换。

主语从句精讲及巩固提升练习概念：从句在整个主句中作主语，因此被称为主语从句。

主语从句隶属名词性从句。

引导词：主语从句引导词分为三类: 连词 that /whether连接代词what / who /whom/which连接副词 when / where/ why /how①连词:that whetherthat：不同于其它的连词，它不充当句子的成分，无意义，不可以省略。

从句句置于句首时，that绝对不可以省略。

（区别于宾语从句）eg. That price will go up is certain.That he finished writing the composition in such a short time surprised us all.Whether “是否”（区别于宾语从句中的if/whether）eg. Whether we go by train or by boat makes no difference.Whether he’ll come here isn’t clear.②连接代词: what who whom whichwhat当what引导主语从句作主语时，指物，谓语动词一般用第三人称单数，下面这个句型例外。

eg. What we need is more time and money.What we need are many more books.who/whom当who引导主语从句作主语时，指代某人。

在从句中作主语不能省略。

翻译是不能把它译成疑问句。

eg. Who will write the poem has not been decided yet.Who will go is not important.③连接副词: where when how whyWhere 表“地点” eg. Where to meet him is still not decided yet.When 表“时间” eg. When he will be back depends on the weather.Why 表“原因” eg. Why he did it remains a mystery.How 表“方式”eg. How the pyramids were built is still a mystery.专项练习（一）1. _______ she couldn't understand was fewer students showed interest in her lessons.A. What... whyB. That. . . whatC. What.. . becauseD.Why.. . thatA. whileB. thatC. ifD. foratmosphere today.A. thatB. whenC. whatD.how4. ______ man first made use of electricity is not exactly known.A. WhenB. IfC. ThatD.What5. _______ we will have a meeting hasn't been decided yet.A. IfB. ThatC. WhatD.WhetherA. That... thatB. What... whatC. Whatever.. . thatD.As... as7. ______ leaves last turns off the light.A. WhoB. WhoeverC. No matter whoD.Whomever8. ______ wins the prize may get the car.A. WhoB. WhomC. WhomeverD.Whoever9. ______ a pity that I didn't see you last week.A. That'sB. What'sC. It'sD.There's10. _______ she will come is certain.A. ThatB. WhatC. /D.WhetherA. If... doB. That... doC. That... doesD.If... does12. ______ has questions can ask the teacher after class.A. WhoB. WhoeverC. AnybodyD.One13. is one of the most useful and fascinating divisions of human knowledge is widely accepted.A. Where chemistryB. That chemistryC. What chemistryD. ChemistryA. whyB. thatC. whetherD.how15.Does _________ matter if he can't finish the job on time?A. thisB. thatC. heD. itA. That... producingB. That... produceC. This... producingD. This... produces17.After Yang Liwei succeeded in circling the earth, our astronauts desire to do is to walk in space.A. whereB. whatC. thatD.how18.It is doubtful________ he knows it or not.A. thatB. ifC. whatD.whether19. _______ caused the accident is still a complete mystery.A. WhatB. ThatC. HowD.Where20. _______ they will hold a sports meeting next week hasn't been decided yet.A. IfB. ThatC. WhatD.Whether21.It doesn't matter________ will take charge of the work.A. whoB. whoeverC. whomD.whomever22._______ is worth doing at all is worth doing well.A. ThatB. WhichC. WhateverD.ItA. What... isB. Whether. .. areC. That... isD.If... is24. _______ some mammals came to live in the sea is not known.A. ThatB. SinceC. AlthoughD.HowA. That... whether... /B. What... if... thatC. That... if... whatD. What. .. whether... /Keys: 1-5 ABCAD 6-10 BBDCA 11-15 CBBBD16-20 BBDAD 21-25 ACCDD专项练习（二）【翻译】1. 新政策会给我们带来好处还是危害还得拭目以待。

高二年级语法要点剖析（李翌洋）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, why1. 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：（1）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。

注意：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。

主语从句一、概念：在复合句中起主语作用的从句叫主语从句。

（一）连接词从属连词：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；例：What he said is true.That you don’t like him is none of my business.Whether the football game will be played depends on the weather.主语从句的时态：不受主句的时态影响和限制。

（1）______ he finished writing the composition in such a short time ______(惊讶) us all.（2）______we will go for an outing tomorrow ______（remains，remained）unknown.（3）______ will be our monitor ______(be) decided yet.（4）______we must study for ______ (be) a question of great importance.（5）______ caused the accident ______（remains，remained）unknown.（6）______ you did ______ (be)right.（7）______ watch ______(be) lost is unknown.（8）______we need ______(be) time.（9）______ we need ______(be) good doctors.小结:（1)主语从句的时态：不受主句的时态影响和限制。

高考英语主语从句定义：用作主语的从句叫主语从句，它是名词性从句之一。

主语从句的时态：不受主句的时态影响和限制。

引导主语从句的连接词有：从属连词:that,whether；连接代词:who(whoever),whom,whose,what(whatever)和which(whichever)；连接副词:when,where,how和why。

连接词：1.从属连词：that，whether1）that引导主语从句只起引导作用，在主语从句中不充当任何成分，that本身无实际意义，但不能省略。

2）whether意为“是否”，放在句首句末皆可。

由whether引导的名词从句做主语，表语，介词宾语，同位语时！不可用if代替。

a.That price will go up is certain.b.Whether they would support us was a problem.他们是否会支持我们还是一个问题。

2.连接代词who，what，which,whatever,whichever,whoever(Who,whom,which,what可以和ever构成合成词，和what一样引导从句，ever起到强调作用。

此类主语从句不能用形式主语it引导，它们在句子中担任成分，不能省略，语序为陈述语序，既有疑问含义,又起连接作用,同时在从句中充当各种成分。

Which side will win is not clear.Whoever breaks the law will be punished.Whatever he did is right.Who killed the scientist remains a question.1）What和that引导的主语从句的区别：that只起引导作用，不充当任何成分，没有意思。

What不仅起引导作用，还要充当一定成分(主语、宾语或表语)，意思是：“什么”。

What we need is money.That he will come is certain.2）whatever/whoever的用法（~ever=no matter~---让步状语从句中）whatever/whoever可以引导主语从句,并在句中作主语、宾语、表语等,不含疑问意义。

高中英语公开课主语从句讲解练习及解析一、主语从句的连词分三类（1）从属连词引导的主语从句（that whether if）that引导的主语从句:引导词that无含义/在句中不做成分/不能够省。

Th at 引导主语从句通常用it 作形式主语。

That she survived the accident is a miracle.whether有含义(是否)/在句中不做成分/不能够省。

注意：引导主语从句，不能用if不能在开头，只能用whether。

Whether she is coming or not doesn’t matter too much.（2）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Whatever we do is to serve the people.注：whatever / whoever的功用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. ）（3）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。

)例如:Where we should leave it is a problem.When they will come hasn’t been made pubic.三、it 作形式主语的主语从句有时为了考虑句子平稳，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。

高中英语公开课主语从句讲解练习及答案一、主语从句的连词分三类〔1〕附属连词引导的主语从句〔that whether if〕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。

That 引导主语从句通常用it 作方式主语。

That she survived the accident is a miracle.whether有含义(能否)/在句中不做成分/不可以省。

留意：引导主语从句，不能用if不能在扫尾，只能用whether。

Whether she is coming or not doesn’t matter too much.〔2〕用衔接代词引导的主语从句在由衔接代词who, whose, whom, which, what, whoever, whomever, whichever, whatever引导的名词性从句中，其衔接代词在句中起名词性作用，担当一定成分.例如Whatever we do is to serve the people.注：whatever / whoever的功用whatever = anything that; whoever = anyone who。

要留意和whatever, whoever 引导的退让状语从句的区别。

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. 〔退让状语从句〕〔＝No matter who breaks the law, he should be punished. 〕〔3〕用衔接副词when, where, why, how引导的名词性从句(其衔接副词有含义,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.三、it 作方式主语的主语从句有时为了思索句子平衡，通常在主语从句处运用方式主语it，而将真正的主语从句移至句末。