专题02 主语从句-2021高考英语主语从句专项练习(解析版)
高中英语主语从句用法练习题50题(答案解析)
高中英语主语从句用法练习题50题(答案解析)1. ____ is still unknown whether we can go back to the past through time - traveling.A. ItB. ThatC. WhatD. Which答案解析：A。
在这个句子中，“whether we can go back to the past through time - traveling”是真正的主语从句，为了避免句子头重脚轻，使用it作形式主语，这是it作形式主语的常见用法。
选项B“that”引导主语从句时无实际意义，但在此处不符合句子结构需求。
选项C“what”在主语从句中要充当成分，这里不需要。
选项D“which”表示“哪一个”，不符合句子语境。
2. ____ makes me happy is that I have passed the difficult English exam.A. ItB. ThatC. WhatD. Which答案解析：C。
这里“____ makes me happy”是主语从句，从句中缺少主语，“what”可以在主语从句中充当主语，表示“……的事物”。
选项A“it”作形式主语时，句子结构应为“it + be + 形容词+ that从句”，不符合此句结构。
选项B“that”引导主语从句时在从句中不充当成分，这里从句缺主语，所以不行。
选项D“which”表示在一定范围内的“哪一个”，不适合此语境。
3. ____ is a fact that the earth moves around the sun.A. ItB. ThatC. WhatD. Which答案解析：A。
“that the earth moves around the sun”是真正的主语从句，这里使用it作形式主语，这是典型的it作形式主语的结构，“it + be + 名词+ that从句”。
高中英语主语从句用法练习题50题(答案解析)
高中英语主语从句用法练习题50题(答案解析)1._____ is important for us to protect the environment.A.ThatB.ThisC.ItD.One答案解析：C。
本题考查it 作形式主语的用法。
it 在句中作形式主语，真正的主语是to protect the environment。
A、B、D 选项均不能作形式主语。
2._____ is known to all that the earth is round.A.ThatB.ThisC.ItD.One答案解析：C。
本题考查it 作形式主语的用法。
it 在句中作形式主语，真正的主语是that the earth is round。
A、B、D 选项均不能作形式主语。
3._____ is a pity that he can't come.A.ThatB.ThisC.ItD.One答案解析：C。
本题考查it 作形式主语的用法。
it 在句中作形式主语，真正的主语是that he can't come。
A、B、D 选项均不能作形式主语。
4._____ is necessary to learn English well.A.ThatB.ThisC.ItD.One答案解析：C。
本题考查it 作形式主语的用法。
it 在句中作形式主语，真正的主语是to learn English well。
A、B、D 选项均不能作形式主语。
5._____ is said that he has gone abroad.A.ThatB.ThisC.ItD.One答案解析：C。
本题考查it 作形式主语的用法。
it 在句中作形式主语，真正的主语是that he has gone abroad。
A、B、D 选项均不能作形式主语。
6._____ is reported that a new bridge will be built.A.ThatB.ThisC.ItD.One答案解析：C。
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。
高中英语主语从句练习题题20题答案解析版
高中英语主语从句完形填空题20题答案解析版1**题干**：In our daily lives, we often encounter situations where we need to make decisions. Sometimes it's hard to know what is the right choice. ___1___ we think carefully and consider all the factors, we can usually come to a good decision. Another important aspect is to listen to our inner voice. ___2___ we trust our instincts, we may find that we are more confident in our choices. However, it's also crucial to gather information and seek advice from others. ___3___ we have different perspectives and experiences, we can learn from each other. Moreover, we should not be afraid of making mistakes. ___4___ we learn from our mistakes, we can grow and become better. Finally, we should always keep an open mind and be willing to change our decisions if necessary. ___5___ we are flexible and adaptable, we can better deal with the uncertainties of life.**问题1**：___1___ we think carefully and consider all the factors, we can usually come to a good decision.A. IfB. WhenC. BecauseD. Although**答案**：A。
高中英语主语从句练习题20题含答案解析
高中英语主语从句练习题20题含答案解析1._____ he will come or not is still a question.A.ThatB.WhetherC.WhoD.What答案解析：B。
“Whether...or not”是固定搭配，表示“是否”。
A 选项that 在主语从句中不表示“是否”的意思；C 选项who 表示“谁”，不符合语境；D 选项what 表示“什么”，也不符合题意。
2._____ surprised us most was his attitude.A.ThatB.WhetherC.WhoD.What答案解析：D。
what 在主语从句中充当主语，表示“什么”。
A 选项that 在主语从句中无实际意义，只起连接作用；B 选项whether 表示“是否”；C 选项who 表示“谁”，在这里都不符合语境。
3._____ is known to us all is that the earth is round.A.ThatB.WhetherC.WhoD.What答案解析：A。
“That is known to us all”是固定句式，that 在主语从句中无实际意义，只起连接作用。
B 选项whether 表示“是否”；C 选项who 表示“谁”；D 选项what 表示“什么”，在这里都不合适。
4._____ he has done is very important.A.ThatB.WhetherC.WhoD.What答案解析：D。
what 在主语从句中充当宾语，表示“他所做的事情”。
A 选项that 在主语从句中无实际意义，只起连接作用；B 选项whether 表示“是否”；C 选项who 表示“谁”，在这里都不符合语境。
5._____ will win the game is not clear.A.ThatB.WhetherC.WhoD.What答案解析：C。
根据语境，“谁会赢得比赛还不清楚”，who 在主语从句中充当主语，表示“谁”。
高中英语主语从句专项练习
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。
2021届高考英语二轮专题 语法：主语从句考点的四个要点和练习题(含答案)
2021届高考英语语法：主语从句考点的四个要点和练习题(含答案)一、弄清主语从句有哪些引导词可以用于引导主语从句的词语主要有五类：连词that和whether、连接代词、连接副词、关系代词型what、关系代词型-ever类词——在一个句子中到底该什么样的“引导词”，主要根据句子意思以及句子结构来确定。
如：1. That fashion differs from country to country may reflect the cultural differences from one aspect. 各个国家不同的时尚潮流从一个方面反映了各国之间的文化差异。
2. When the delayed flight will take off depends much on the weather. 那架延误的班机何时起飞在很大程度上取决于天气。
3. What we expect from you is working hard rather than hardly working. 我们期待你的是努力做事，而不是几乎什么都不做。
【分析】第1句用that引导主语从句，that既不充当句子成分，也没有具体的含义；第2句用when引导主语从句，when在主语从句中充当时间状语，表示“何时”；第3句用what引导主语从句，what在主语从句中用作动词expect的宾语，在意思上相当于the thing that。
二、弄清什么情况下使用形式主语为避免头重脚轻，人们通常会将主语从句置于句末，而在主语位置处使用形式主语it。
如：1. It is by no means clear what the president can do to end the strike. 完全不清楚总统要做什么才能结束那场罢工。
2. It remains to be seen whether the newly formed committee’s policy can be put into practice.新形成的委员会的政策能否贯彻落实还有待被观察。
高中英语主语从句练习题20题(答案解析)
高中英语主语从句练习题20题(答案解析)1._____ is known to all that the earth is round.A.ThatB.ItC.AsD.What答案解析：B。
“It is known to all that...”是固定句型，it 作形式主语，真正的主语是that 引导的从句。
A 选项that 不能直接放在句首作形式主语；C 选项as 引导的非限制性定语从句通常放在句首，语义不符；D 选项what 引导主语从句时不能用在这个句型中。
2._____ is important for us to learn English well.A.ThatB.ItC.ThisD.One答案解析：B。
“It is important for sb to do sth”是固定句型，it 作形式主语，真正的主语是动词不定式to learn English well。
A 选项that 无此用法；C 选项this 不能作形式主语；D 选项one 也不能作形式主语。
3._____ seems impossible that he can finish the task in such a short time.A.ThatB.ItC.ThisD.He答案解析：B。
“It seems impossible that...”是固定句型，it 作形式主语，真正的主语是that 引导的从句。
A 选项that 不能作形式主语；C 选项this 不能作形式主语；D 选项he 不是形式主语的正确用法。
4._____ is a pity that you missed the concert.A.ThatB.ItC.ThisD.What答案解析：B。
“It is a pity that...”是固定句型，it 作形式主语，真正的主语是that 引导的从句。
A 选项that 不能作形式主语；C 选项this 不能作形式主语；D 选项what 引导主语从句时不能用在这个句型中。
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主语从句2—高考英语语法练习一次清（一轮复习）1._______ all the teachers believe is ______the hard work of students benefits them a lot.A. What, whichB. Which, thatC. When, thatD. What, that 【答案】 D【解析】句意：老师们认为努力总是有用的。
分析句子结构可知，第一空为主语从句，从句中的believe缺少宾语，所以第一空用what，is后的部分表语从句，从句成分完整，所以第二空用that起连接作用，故选D。
【总结】考查名词性从句，本题涉及what引导的主语从句；以及that引导的表语从句。
2.— _______ made her struggle to become an artist so hard?— ______ she was a woman.A. What; WhatB. That; ThatC. What; ThatD. That; What 【答案】 C【解析】句意：—是什么让她努力成为艺术家变得如此之难？—她是一个女性。
第一空作主语，表示“什么”，故用what，第二空是对what的回答，she was a woman既是一个句子又要作主语，而句子是不能直接作主语的，故在前面加个that，且that无实义，不作成分，故选C。
【总结】考查名词性从句，本题涉及what的应用，以及that引导的主语从句。
3.It is ________ he often breaks the schools rules ________ makes his teacher unsatisfied with him.A. what; thatB. that; whatC. that; thatD. which; that 【答案】 C【解析】意：正是他经常违反校规使老师对他不满意。
分析句子结构可知，第一空为主语从句，从句成分、意思完整，it是形式主语，用that只起连接作用，无实义；第二空为强调句型，其基本结构为：it is+被强调部分+that+其余部分，故选C。
【总结】考查名词性从句和强调句型，本题涉及that引导的主语从句，以及强调句型的结构“it is+被强调部分+that+其余部分”。
4.I was going to pay by cash when it suddenly occurred to me I had left my purse at home.A. whetherB. whatC. thatD. where 【答案】 C【解析】句意：我正要付现金，突然想起我把钱包忘在家里了。
it occurred to sb. t hat…固定句式，“某人突然想起某事”后跟that从句，故选C。
【总结】考查连接词辨析，以及固定句式it occurred to sb. that…。
5.___ surprised me most was ____the girl passed the driver test.A. That; thatB. What; howC. What; thatD. That; why 【答案】 C【解析】句意：最让我吃惊的是那个女孩通过了驾驶考试。
___ surprised me most 是一个主语从句，从句中缺少主语，故填what；____the girl passed the driver test是一个表语从句，句中不缺少成分，故填that。
因此选C。
【总结】考查名词性从句，本题涉及what引导的主语从句和that引导的表语从句。
6.It has been pointed out ________ plays a vital role in driving away one's anxiety is one's sweet childhood memories.A. what thatB. whichC. thatD. that what 【答案】 D【解析】句意：有人指出，驱除焦虑所起着至关重要的作用是童年美好的回忆。
本句时一个主语从句，it作形式主语，真正的主语为that what plays a vital role in driving away one's anxiety is one's sweet childhood memories.，主语从句中又有一个主语从句，且此主语从句中缺少主语，所以用what引导。
故选D。
【总结】考查名词性从句，本题涉及what引导的主语从句。
7.While some behaviors may seem strange to you, remember you consider normal probably seems just as unusual to others.A. it; thatB. what; thatC. that; whatD. which; that 【答案】 C【解析】句意：虽然有些行为对你来说可能很奇怪，但请记住，你认为正常的行为对别人来说可能也不寻常。
第一空为宾语从句，从句结构完整用that起连接作用，第二空为主语从句，从句中consider缺少宾语，应该用what，故选C。
【总结】考查名词性从句，本题涉及that引导的宾语从句和what引导的主语从句。
8.It was he said disappointed me.A. that; whatB. what; thatC. that; whichD. which; that 【答案】 B【解析】句意：正是他说的话让我很失望。
这是一个强调句型,"it is/was that..."是固定搭配,"what he said"是被强调部分, 你可以发现去掉"it was that"后, 句子仍然完整。
"what he said"做主语,主语从句中"said"缺宾语用what补足，故选B。
【总结】考查主语从句的强调形式。
9.We believe you have been devoted to naturally of great necessity.A. that; beingB. all that; beC. that all; areD. what; is 【答案】 D【解析】句意：我们相信你所投入的自然是非常必要的。
分析句子可知，believe后接宾语从句，包含一个主语从句“you have been devoted to ”其中to为介词后接what作宾语，所以连接词为what，故what you have been devoted to 为主语，谓语动词为第三人称单数is。
故选D。
【总结】考查名词性从句和主谓一致，本题涉及what引导的主语从句。
10._____ makes this shop different is that it offers more personal services.A. WhatB. WhoC. WhateverD. Whoever 【答案】 A【解析】句意：这家商店的不同之处在于它提供更多的个人服务。
what引导名词性从句时本身有意义，即表示“什么”或“所……的事物”(="the" thing(s)that)，同时又在从句中充当一定的成分。
whoever引导名词性从句时相当于anyone who或those who。
whatever引导名词性从句时相当于anything that，故选A。
【总结】考查名词性从句，本题涉及what引导的主语从句。
11.He took a trip to Beijing last week and ________ he saw at the Forbidden City impressed him deeply.A. thatB. howC. whatD. which 【答案】 C【解析】句意：上周他到北京旅行了，他在故宫所看到的给他留下了深刻的印象。
分析句子结构可知，连词and后为一个名词性从句，因此应该使用what引导，且what在从句中作主语，故选C。
【总结】考查名词性从句，本题涉及what引导的主语从句。
12.________ is the centre of our planetary system was a difficult concept to grasp in the Middle Ages.A. It's the sun and not the earthB. The sun and not the earthC. Being the sun and not the earthD. That the sun and not the earth【答案】 D【解析】句意：太阳而不是地球是我们行星系统的中心，这在中世纪是一个很难理解的概念。
分析句子可知，整个句子为主系表结构，was为系动词，它之前的都为主语，且主语由句子来充当，句子结构以及句意完整，所以连词代词为that。
故选D。
【总结】考查名词性从句，本题涉及that引导的主语从句。
13._______is known to us all is that Johnson broke his promise ______ he would come to help me as soon as possible.A. It; thatB. What; thatC. As; whichD. What; which 【答案】 B【解析】句意：我们都知道，Johnson违背了他会尽快来帮助我的诺言。
分析句子结构可知，第一空为主语从句，从句中缺少主语，所以用what，第二空为同位语从句，从句结构完整，所以用that解释promise的内容，故选B。
【总结】考查名词性从句，本题涉及主语从句和同位语从句。
14.________ manners are very important in every country is known to all，but the trouble is that different countries have different ideas about ________ good manners are.A. That; whatB. That; thatC. What; thatD. What; what 【答案】 A【解析】句意：众说周知，礼貌在每一个国家中都是非常重要的，但是麻烦是，不同的国家对于什么是良好的礼貌有着不同的认识。