主语从句讲解及练习
主语从句强调句讲解练习
主语从句1．定义：用作主语的从句叫做主语从句。
2．引导主语从句的关联词有三类：(1)从属连词that、whether。
如：如：That they were in truth sisters was clear from the facial resemblance between them.很明显，她们确是亲姐妹，她们的脸型很相似。
Whether he’ll come here isn’t clear. 他是否会来这里还不清楚。
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。
由whether及其他连词引导的主语从句放在句首，句后都可。
If只能放在句中。
(2) （特殊疑问词）连接代词who, whom, whose, what, which, whoever, whatever, whichever如：___which_______watch was lost is unknown._____what_____she did is not yet known. 她干了什么尚不清楚。
__which________side will win is not clear.Whoever comes is welcome. 不论谁来都欢迎。
(3) （特殊疑问词）连接副词where, when, how, why，wherever，whenever，however。
___________ he did it remains a mystery.When they will start is not known yet.How this happened is not clear to anyone. 这事怎样发生的，谁也不清楚Wherever you are is my home ---- my only home.你所在的任何地方就是我的家----我唯一的家。
理解中的主语从句和表语从句练习题及
理解中的主语从句和表语从句练习题及解答主语从句和表语从句是英语语法中重要的从句结构，它们在句子中起到了关键的作用。
本文将为您提供一些关于主语从句和表语从句的练习题及解析，帮助您进一步理解和掌握这两种从句。
练习题一：主语从句1. _________ is important to stay hydrated during hot summer days.A. HowB. WhenC. ThatD. It2. _________ she told me was a complete surprise.A. WhatB. WhoC. WhenD. Where3. _________ will attend the meeting is not yet confirmed.A. ThatB. WhatC. HowD. Who4. _________ the book is not easy to understand.A. WhetherB. ThatC. WhatD. When5. _________ we need is more time to complete the project.A. WhyB. WhatC. WhenD. How练习题二：表语从句1. My biggest fear is _________.A. that I will fail the examB. when the exam will startC. how difficult the exam isD. why I need to take the exam2. The truth is _________ most people are not aware of the consequences.A. whenB. whereC. whatD. why3. Our goal is _________ a sustainable future for generations to come.A. whyB. howC. whatD. when4. The problem is _________ we don't have enough resources.A. howB. whyC. whenD. where5. His belief is _________ hard work and dedication are key to success.A. whatB. thatC. whenD. where解析：练习题一：主语从句1. D. It。
主语从句讲解及练习
主语从句讲解及练习什么是主语从句？主语从句是由一个从句充当主语的句子结构，它由连接词引导，用来说明主语的内容或者起到引入主题的作用。
主语从句的引导词一般情况下，主语从句由以下连接词引导：- that- whether/if- who/whom- which- what- whatever- whoever- whichever主语从句的用法主语从句在句子中承担主语的角色，可以帮助我们表达某个动作、状态、事件或者事实的主题。
下面是一些常见的用法示例：1. 表达事实或真理：例如：That he is innocent is beyond doubt.（他的无辜是毫无疑问的。
）2. 表达感觉或观点：例如：What he said is very interesting.（他说的话很有趣。
）3. 引导宾语从句：例如：I believe that he will succeed.（我相信他会成功。
）主语从句的位置一般情况下，主语从句位于句首或者句中，具体位置取决于句子的结构和语境。
主语从句的练题请根据下面的句子，填写合适的主语从句：1. __________ you did yesterday surprised everyone.（你昨天做的事让大家都吃惊。
）2. __________ will happen remains unknown.（将会发生什么还不确定。
）3. __________ is important to study hard.（努力研究是很重要的。
）5. __________ we need is more time.（我们所需要的是更多的时间。
）参考答案：1. What2. What3. It4. Whether/if5. What以上是对主语从句的讲解及练习，希望对你的学习有所帮助。
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。
名词性从句学案(语法精讲-主语从句、宾语从句、表语从句、同位语从句)+经典习题(含答案)
名词性从句名词性从句〔主语、表语、宾语、同位语从句〕（一）主语从句1．定义：用作主语的从句叫做主语从句。
2．构成：关联词+简单句3．引导主语从句的关联词有三类：(1) 附属连词that。
如：That they were in truth sisters was clear from the facial resemblance between them.很明显，她们确是亲姐妹，她们的脸型很相似。
(2) 附属连词whether。
如：Whether he’ll come here isn’t clear. 他是否会来这里还不清楚。
(3) 连接代词who, whom, whose, what, which, whoever, whatever, whichever连接副词where, when, how, why。
如：What she did is not yet known. 她干了什么尚不清楚。
解释：1．主语从句能用it作形式上的主语。
常以it作形式主语的句型有：A. It+be+形容词(obvious, true, natural, surprising, good, wonderful, funny, possible, likely, certain, probable, etc.)+that从句。
如：It is certain that she will do well in her exam. 毫无疑问她考试成绩会很好。
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. 很遗憾我们不能去。
C.It+seem, happen等不及物动词及短语+that从句。
如：It seems that Alice is not coming to the party at all. Alice似乎不来参加晚会。
主语从句表语从句学案和专项练习
Subject Clause and Predicative ClauseⅠ. 主语从句(Subject Clause)一定义：__________________________________________________.1. He is right .2. What he said is right .二.主语从句引导词1.主语从句的引导词与宾语从句一样。
〔但不用if 〔是否〕，只能用whether(是否)〕1) that 2) whether3) what , which ,who, whom, whose, whatever , whichever.....4) where , when , why, how, wherever, whenever .....5) how many , what color, how far等。
2. 引导主语从句的关联词除起连接句子的作用，绝大多数关联词在主从中要充当一定的句子成分。
3. 主语从句的语序是：关联词+S+V三. 主语从句引导词的用法:1. that 的用法：that 引导句意完整, 意义明确不缺成分的述句；无词义，在主从中不充当句子成分，不能省略。
仿照例子改写句子改成相应的主语从句Model: There is life on another planet (在另外的星球上)〔that 引导的主从〕 It is almost impossible.→That there is life on another planetis almost impossible(主从) s v.1). The scientist will give us a lecture ne*t week. It is true. →2). You don’t like him. It is none of my business.(不关我的事) →3).Her hair was turning gray(灰色). It worried her bit.→4). He told her everything. It is probable.→5). He sings so well. It is no surprise.→2. whether 的用法: whether引导的主从不缺句子成分，句意不完整，表达一种不确定，不明确的概念；whether当"是否"讲，在主从中不充当句子成分。
主语从句讲解加练习(1)
4.(__W__h_o_ can join in the sport meet) is decided by the teacher. 5.(W__h_e_t_h_e_r_ it will rain or not) is not clear.
It is a pity/shame that... 遗憾的是…… It is a surprise that…令人惊奇的是… It is a fact that… …是事实 It is common knowledge that… …是常识
*__It_i_s_a__p_i_ty__th_a_t__(很遗憾)we lost the match.
Unit4 Grammar
Noun clauses as the subject
名词性从句
主语
Find the subjects in the following sentences.
1. A tree has fallen across the road. 2. You are a student. 3. To find your way can be a problem. 4. Smoking is harmful to you. 5. What she said is not yet known. 6. That we shall be late is certain. 7. It’s certain that we shall be late.
最新主语从句详细讲解及综合练习资料
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。
高考语法 名词性从句之主语从句与表语从句 讲解及练习(附答案)
名词性从句1 主语从句：在复合句中充当主语成分的句⼦子叫主语从句 1.1 主语从句的引导词 1.2 主语从句的形式Conlusion 1:主语从句作主语时，谓语动词一般用单数（第三人称）形式。
Conlusion 2:连词That在句中无实际意义，不能省略。
Conlusion 3:whether引导的主语从句可放在句首，但if不能。
Conlusion 4:主语从句中连词that/whether等不能重复使用。
Conlusion 5:what引导的主语从句，可根据表语决定主句的单复数形式。
Conlusion 6:为了平衡句子结构，主语从句大多可改写为it形式主语形式。
从属连词连接副词连接代词引导词that,whether,if when, why, where, how, whenever, wherever, however what, who, whom, which, whatever,whoever, whomever, whichever形式说明⽰示例that 引导的主语从句置于句⾸首、that 在主语从句中不做任何成分、不可省略他要来看望我们，这使我们很⾼高兴。
形式评语it代替主语从句It + is/was + adj. +从句对于学⽣生来说很明显的是，他们要为未来做好准备。
“It is/was + necessary/important/surprising/strange/unbelievable/obvious…+从句”结构中，从句谓语动词用“should+动词原形”，should可以省略It + is/was + 名词 +从句我们的希望是，我们都能通过考试。
It + is/was + V-ed +从句据宣布，该计划已经顺利通过。
“It is/was + suggested/advised/ordered/insisted/required/demanded…+从句”结构中，从句谓语动词用“should+动词原形”，should可以省略It + is/was + 特殊动词 +从句(happen,occur,seem,appear…)你似乎不同意这个计划。
主语从句 讲解与练习
C.It+be+过去分词 (said, reported, thought, expected, announced, arranged, etc.) +that从句 It is said that Mr. Green has arrived in Beijing.
D.It+(seems, happens, appears等不及物动词及短 语)+that从句 It happened that I was out that day. It seems that she is not in a good mood.
E.It+(doesn’t matter, makes no difference,etc)+ 连接代词或连接副词引导的 主语从句 It doesn’t matter whether she will come or not.
ቤተ መጻሕፍቲ ባይዱ
主语从句与强调句的区别
1). 在主语从句中，把It be … that 去掉之后，句子成分不完整；在 强调句中，则是个完整的句子； 2). 主语从句多种引导词；强调句 的引导词只有：that, who。
What you said is of great importance. How he was successful is still a puzzle.
3.主语从句置于句首时，必 须由连接词引导，不能省略 这些连接词；但是如果用it 作形式主语，主语从句后置 时，则从属连词that可以省 略。 That he is a hero is known by everyone.
Subject Clauses 主语从句
A tree has fallen across the road.
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# 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。
主语从句详解及练习_附答案
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。
高中英语主语从句用法练习题40题含答案解析
高中英语主语从句用法练习题40题含答案解析1._____ he will come to the party is still uncertain.A.ThatB.WhetherC.WhatD.Who答案解析：B。
“Whether he will come to the party”是主语从句，在这个句子中“whether”表示“是否”，整个主语从句的意思是“他是否会来参加聚会”。
“that”引导主语从句时在从句中不充当任何成分，只起连接作用，且没有实际意义，此句中意思不符。
“what”在主语从句中要充当成分，此句不缺成分。
“who”在主语从句中表示“谁”，此句不是问谁会来参加聚会。
2._____ she won the first prize surprised all of us.A.ThatB.WhetherC.WhatD.When答案解析：A。
“That she won the first prize”是主语从句，“that”在从句中不充当任何成分，只起连接作用，此句中“她赢得一等奖这件事让我们所有人都很惊讶”，用“that”符合语法规则。
“whether”表示“是否”，不符合句意。
“what”在主语从句中要充当成分，此句不缺成分。
“when”表示“什么时候”，不符合句意。
3._____ is important is that we should study hard.A.ThatB.WhetherC.WhatD.Who答案解析：C。
“What is important”是主语从句，“what”在从句中充当主语，表示“重要的事情”。
“that”在主语从句中不充当成分，此句缺主语。
“whether”表示“是否”，不符合句意。
“who”表示“谁”，不符合句意。
4._____ he said at the meeting was very important.A.ThatB.WhetherC.WhatD.Who答案解析：C。
主语从句讲解和练习题
主语从句讲解和练习题公司内部编号：（GOOD-TMMT-MMUT-UUPTY-UUYY-DTTI-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。
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。
主语从句超全练习试题和答案解析
主语从句练习题[即学即用]I. 用适当的词填空，使句子意思完整。
1. ______ he didn’t attend the meeting yesterday wasn’t quite clear.2. The Foreign Minister said, “It is our hope ______ the two sides will work towards peace.”3. ______ team will win the match is still unknown.4. ______ comes to the party will receive a present.5. ______ Mary has left is still a question.6. It’s reported ______ three people were killed in the accident and five were hurt badly.7. ______ he solved the problem successfully interested all of us.8. We usually think ______ we can’t get seems better than what we have.9. It is a fact ______ English is being accepted as an international language.10. ______ is to be sent there to solve the problem hasn’t been decided. II. 下列各句中均有一处错误，请改正。
1. That the old man’s son wanted to know was where the gold had been hidden.2. It is reported when China has successfully sent Shenzhou VI spaceship into space.3. If he can finish his task on time is of great importance.4. Whether the 2008 Olympic Games will be held in Beijing excited the whole nation.5. After Yang Liwei succeeded in circling the earth, which our astronauts desire to do is walk in space.6. Whatever leaves the room last ought to turn off the lights.7. Why they will solve the serious problem today has not been decided.8. When will win the English competition is still a problem.9. How our spring sports meet will be held or not this week is not known yet.10. It’s strange when he should have gone away without telling us. GRAMMAR主语从句学习指导[寻规找矩] 请观察下列句子，注意主语从句的用法。
名词性从句学案(语法精讲-主语从句、宾语从句、表语从句、同位语从句)+经典习题(含答案)
名词性从句名词性从句（主语、表语、宾语、同位语从句）（一）主语从句1．定义：用作主语的从句叫做主语从句。
2．2．构成：关联词+简单句3．3．引导主语从句的关联词有三类：4．(1)从属连词that。
如：Thattheywereintruthsisterswasclearfromthefacialresemblancebetweenthem.(2)(3)解释：1+thatIt’ItdoesnF.当G.2．注意连接代词whoever,whatever,whichever等引导主语从句的含义Whoevercomeswillbewelcome.(whoever=thepersonwho)来的人将受到欢迎。
（二）表语从句1．定义：用作表语的从句叫做表语从句。
2．构成：关联词+简单句3．引导表语从句的关联词的种类：(1)从属连词that。
如：ThetroubleisthatIhavelosthisaddress.麻烦是我把他的地址丢了。
(2)从属连词whether,as,asif。
如：Helookedjustashehadlookedtenyearsbefore.他看起来还与十年前一样。
注：从属连词if一般不用来引导表语从句，但asif却可引导表语从句能跟表语从句的谓语动词一般为系动词be,seem,look等。
如：Itlookedasifitwasgoingtorain.看起来天要下雨了。
(3)连接代词who,whom,whose,what,which,whoever,whatever,whichever连接副词where,when,how,why。
如：Thequestionishowhedidit.问题是他是如何做此事的。
解释：1．连词because可引导表语从句。
如：2注意：1．what●例：2．when●例：●例：3．that●例：●例：4．●（三）宾语从句1．定义：用作宾语的从句叫宾语从句。
2．构成：关联词+简单句3．引导宾语从句的关联词有三类：(1)从属连词that。
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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?Very pretty, run quickly, was born in 19924. 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）连接词的选用1. that和what的选用that和what都可引导主语从句。
what除起连接作用外，还在名词性从句中充当某些成分，可作从句的主语、宾语或表语。
而that在名词性从句中不充当任何成分，无词义，只起连接词作用。
如：What he wants is a book. 他想要的是一本书。
That light travels in straight lines is known to all.众所周知，光线沿直线运行。
2. if和whether的选用引导主语从句，不能用if，只能用whether。
如：Whether we will hold a party in the open air tomorrow depends on the weather.我们明天是否在户外开晚会要看天气而定。
3. 其它连接代词和副词的选用根据主语从句的具体意义，正确的选择who, which, when, where, why, how 等连接词，这些连接词既有疑问含义，又起连接作用，同时在从句中充当各种成分。
如：When we shall hold our sports meet is not decided. 我们何时举行运动会还没有决定。
Who broke the glass yesterday is not clear. 还不清楚昨天谁打破了玻璃。
Which car you will choose to buy makes no difference. 你决定买哪一辆车都不会有任何区别。
4. 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. ）5. it构成的主语从句（1）由连词that引导的主语从句，在大多数情况下会放到句子的后面，而用代词it作形式主语。
如：It is well-known that the earth moves around the sun. 众所周知，地球围绕太阳转。
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. （主语从句，有that，无逗号）As was reported, the US was under the terrorist attack.（定语从句，无that，有逗号）上两句意为“据报道，美国遭到恐怖分子的袭击”。
（2）常见用it作形式主语的复合句结构It is a fact （a good idea / a pity / a shame / no wonder / good news…）that…如：It’s a pity that you missed the film.你没有看那部电影真是太遗憾了。
It is necessary （clear / true / strange/ important /wonderful / possible / likely…）that…需要注意的是，这类主语从句中，谓语动词很多为“（should）＋动词原形”，即要用虚拟语气。
如：It is necessary that you （should）master the computer.你很有必要掌握电脑。
It is important that a student learn English well.学生学好英语很重要。
It’s clear that they badly need help.很明显，他们急需援助。
It is likely that a hurricane will arrive soon.飓风很可能马上就要到达了。
It is reported （well-known / hoped / thought / expected /said /believed/decided /suggested /ordered…）that…如：It is said that he was killed in the earthquake. 据说他在地震中丧生了。
It seems （happened / appears / doesn’t matter / makes no difference / …）that …如：It seems that they will win the game.看起来他们好像会赢得这场比赛。
It makes no difference whether he will attend the meeting or not.他是否会参加会议都无关紧要。
巩固练习1._________you have done might do harm to other people.2. ________ leaves the room last ought to turn off the lights.3. ________ the Games will be held in Beijing is not known.4. It worried her a bit _______ her hair was turning grey.5. ________ you don’t like him is none of my business.6. _________ he said at the meeting astonished everybody present.7. _________ is a fact that English is accepted as an international language.8. ________we can’t get seems better than _______ we have.9. _________ we’ll go camping tomorrow depends on the weather.10. ________ caused the accident is still a complete mystery.11. _______ has helped to save the drowning girl is worth praising.12. makes this shop different is that it offers morepersonal services.13.____ matters most in learning English is enough practice.14. ______ he referred to in his article was unknown to the general reader.15. parents say and do has a life-long effect on their children.16. _____ is known to us all is that the 2008 Olympic Games will take place in Beijing.17. ______ was most important to her, she told me, was her family.18. It is obvious to the students ______ they should get well prepared for their future.。