最新高中英语语法主语从句讲解及练习11.24
主语从句讲解及练习
主语从句讲解及练习主语从句（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。
高中英语语法主语从句讲解及练习11.24
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。
2023年高中英语语法精讲,主语从句详细讲解
2023年高中英语语法精讲—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?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。
高中英语公开课主语从句讲解练习及解析
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
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。
主语从句讲解和练习
主语从句一、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/不可以省。
That 引导主语从句通常用it 作形式主语。
例如：That you will win the medal seems unlikely.That she survived the accident is a miracle.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不能在开头，只能用whether。
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.（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：What you need is more practice.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. ）（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。
主语从句详细讲解及综合练习
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。
史上最全的主语从句讲解及其练习
主语从句一、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/不可以省。
That 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/不可以省。
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。
高考英语专项复习：主语从句讲解及练习(附答案)
主语从句讲解及练习主语从句一、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, 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.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）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。
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, 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：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。
主语从句超全讲解加练习
It is reported that 据报道)20 people were *___________________( killed in the accident. It is suggested that 建议)we should eat *______________________( more vegetable and do more exercise.
What many scientists believe is that the earth is round … Who will take part in the meeting has not been decided. Whoever breaks the law will be punished.
4.(______ Who can join in the sport meet) is decided by the teach 5.(________ Whether it will rain or not) is not clear.
Conclusion: 主语从句作主语时，谓语动词一般用单数形式。
1. That he will refuse this piece of advice is impossible. It is impossible that he will refuse this piece _______________________________________ of advice. _______________________________________
C That
D Where
3. It
worried her a bit ___ her hair was turning gray. B. that
最新主语从句超全讲解加练习
effective.
3) It +不及物动词+从句
It happened that...
主语从句超全讲解加练习
主语从句：
做主语用的名词性从句，因其在复合句中做主语， 又称主语从句，引导主语从句的有连词that ， whether， 连接代词who ，what ，which， 连 接副词when，where， how， why等。
1）从属连词：that， whether等. that 引导主语从句只起引导作用，本身无实 际意义，在主语从句中不充当任何成分，但 不能省略。
4) It + be +过去分词+从句
It is said that...
据说……
It is known to all that... 众所周知……
It is reported that... 据报道……
It is believed that...据信……;人们相信……
ห้องสมุดไป่ตู้
It is suggested that + (should）do... 建议……
killed in the accident.
*__It__is__s_u_g_g__e_s_t_e_d__th_a__t __(建议)we should eat
more vegetable and do more exercise.
2.连接代词who ，what ，which, whatever, whichever, whoever (Who, whom, which, what可
史上最全的主语从句讲解及其练习
主语从句一、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/不可以省。
That 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/不可以省注意：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 '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.例女口Whatever we do is to serve the people.注： whatever / whoever 的功用。
要注意和 whatever, whatever = anything that; whoever = anyone whowhoever引导的让步状语从句的区别。
女口： 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。
主语从句超全讲解加练习
主语从句的规律：
例2. He will not come to the meeting this evening is true. 正：That he will not come to the meeting this evening is true.
规律二、连词that 在从句中无实际意义， 但不能省略。
5.
B was to return to school.
A.That really interested him B.What really interested him C.Which really interested him D.That interest him really 6. C makes mistakes must correct them. A.What B.That C.Whoever D.Whatever 7. A your men have been on my land without permission. A.It seems that B.There seems to be C.That seems D.It seems for 8.It has always puzzled me B the old man lied a red silk ribbon on the young tree.
C That
D Where
3. It
worried her a bit ___ her hair was turning gray. B. that
D. when
A.whether
C. what
4.What I say and think ___ none of your business. A. is B. are C. has D have
高中英语公开课主语从句讲解练习及答案
主语从句一、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/不可以省。
That 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/不可以省。
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。
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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 BBDCB2)19-24 BBADBA。