名词性从句知识点总结经典1

一、名词性从句

1．_______is known to us all is that Johnson broke his promise ______ he would come to help me as soon as possible.

A. It; that B. What; that C. As; which D. What; which 【答案】 B

【解析】【分析】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。 【点评】考查名词性从句，本题涉及主语从句和同位语从句。

2．While some behaviors may seem strange to you, remember you consider normal probably seems just as unusual to others.

A. it; that B. what; that C. that; what D. which; that 【答案】 C

【解析】【分析】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。

【点评】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。

3． is clear to the members of the committee is that the President will not give in to their demands.

A. Who B. It C. As D. What 【答案】 D

【解析】【分析】句意：委员会成员清楚的是，总统不会向他们的要求让步。that the President will not give in to their demands.这个句子作表语； is clear to the members of the committee这是主语从句，这里缺少主语从句的连接词，并且连接词在句中作主语，it是代词，不是了；连接词，故排除B；as作主语时，是在定语从句中，故排除C；who指人，根据表语指的事情，不是人，故排除A；what在主语从句中可以作主语或宾语，指事，符合句意，故选D。

【点评】考查名词性从句，本题涉及what引导的主语从句。

4．________ is known to us all that the old scientist, for ________ life was hard in the past, still works hard in his eighties.

A. As; whose B. It; whose C. As; whom D. It; whom 【答案】 D

【解析】【分析】句意：我们都知道，那位老科学家，过去生活很艰苦，到了八十多岁还在努力工作。第一空it is known to us all that…是个固定句型，意为“众所周知…”；第二空为介词+关系代词引导的定语从句，先行词the old scientist指人，作介词for的宾语，只能用

whom，故选D。

【点评】考查名词性从句和定语从句，本题涉及固定句式it is known to us all that…和whom引导的性定语从句。

5．In the past decade, our education system too much on grades. However, grades have a direct connection with future success is still a question.

A. focused; whether B. focused; if C. has focused; whether D. has focused; if 【答案】 C

【解析】【分析】考查时态和主语从句。根据In the past decade,在最近的几十年里，可知句子用现在完成时态，our education system是句子的主语，单数形式，所以第一空填has focused；第二空是主语从句做主语，if是否，不能引导主语从句，所以第二空填whether。故选C。

【点评】主语从句主要有三类：

1）（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。（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。注意：if不能引导主语从句。

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.你所需要的是更多的训练。

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.

6．--- made her ashamed of herself? --- the lowest mark in her class.

A. What; Because she got B. Was it what; Getting C. What was it that; That she got D. What was it that; Get 【答案】 C

【解析】【分析】句意：——是什么让她对她自己感到羞愧？——是她获得了她班上的最低分让她惭愧。A中的what是句子的主语，但是because引导的从句不作主语，是原因状语从句，故排除；B的第一空是错误形式，故排除；C、D两项的第一个选项是一样的，说明第一个题干是一个强调句型，特殊疑问句下的强调句型，有what引导；第二个空是对what的回答，因为what是上一句的主语，That she got the lowest mark in her class是从句，可以作主语；而D项的get是动词原形，不能作主语，故答案为C。

【点评】考查强调句型的使用和对特殊疑问句的回答，注意问什么回答什么，也就是说疑问词what是句子的主语，回答的内容也需要在句子中能作主语。

7．Located between the 16th and the 18th floor, ______ I call my “home” is more like a “bird's nest”.

A. which B. that C. what D. where 【答案】 C

【解析】【分析】考查主语从句。What引导主语从句______ I call my “home”且 What在从句中充当call的宾语。故选C。

8．____ made me more unhappy was ___ the boy asked my friend to be his girlfriend and she agreed.

A. What; that B. That ; that C. What; whether D. It; that 【答案】 A

【解析】【分析】句意：让我更不高兴的是那个男孩要求我的朋友做他的女友，她同意了。第一空填what,它一方面在句子中引导主语从句,另一方面又在主语从句中作主语；第二空用that引导表语从句且从句中不缺成分,表示对前面情况的说明。故选A。 【点评】考查了名词性从句，本题涉及what引导的主语从句以及that引导的表语从句。

9．They lost their way in the forest, and ___ made matters worse was that night began to fall.

A. it B. which C. that D. what 【答案】 D

【解析】【分析】本题中含有一个主语从句what made matters worse，其中的what引导起这个主语从句，同时在主语从句中做主语。AC两项不能引导主语从句，which在引导名词性从句的时候总是含有疑问的语义，而本句中并没有疑问的语义。句意：他们在森林里迷路了，情况更糟糕的是天又黑了。故D正确。

10．________ the weather will not clear up until next week is bad news for us. A. As B. If C. Whether D. That 【答案】 D

【解析】【分析】考查主语从句。句意：直到下周天气才放晴，这对我们来说是坏消息。此处是that引导的主语从句，that无实义，只其引导作用，故答案为D。

【点评】主语从句属于名词性从句，在名词性从句中，that无实义，只起连接作用，不做句子成分；if/whether起连接作用，不做句子成分，有实义“是否”。做题时注意看从句是否少成分。

11．________ we may find interesting is that it usually takes more to be polite.

A. That B. What C. Which D. / 【答案】 B

【解析】【分析】句意：我们可能会发现有趣的是通常需要更多的礼貌。此处是主语从句做主语，从句没有引导词，缺少宾语，故答案为B。

【点评】考查名词性从句，本题涉及what引导的主语从句的应用。

12．________ his failure lies is expected ________ clear to us.

A. What… to make B. How… made C. Where… to be made D. Why… making 【答案】C

【解析】【分析】句意：他的失败之处有可能被我们弄清楚。分析句子可知，主语从句中的lie为不及物动词，所以主句中缺少状语，因此填where。expect sth.to do.固定短语，“期望某事发生”，sth. be expected to do.意为”某事有可能发生“。make sth. clear to sb为固定搭配，意为“向某人阐明某事，使某人弄清某事”。本句中make的宾语是where his failure lies是被弄清楚，要用动词不定式的被动形式。因此选C。

【点评】考查名词性从句及固定搭配，本题涉及主语从句和固定短语expect sth.to do.

13．______excited Jenny most was ______ she finally succeeded in ______seemed to be the most difficult exam to him.

A. That; that; which B. What; that; what C. That; because; that D. What; because; which 【答案】 B

【解析】【分析】句意：珍妮最兴奋的是对他来说似乎是最困难的考试，她终于成功了。 ______excited Jenny most是主语从句，从句中缺少主语，因此用关系代词what ； _____ she finally succeeded in ...是表语从句，从句中不缺少成分，因此用引导词that； ______seemed to be the most difficult exam to him. 是宾语从句，从句中缺少主语，因此用关系代词what ， 故选B。

【点评】考查名词性从句，本题涉及主语从句，表语从句和宾语从句。

14．It was he said disappointed me.

A. that; what B. what; that C. that; which D. which; that 【答案】 B

【解析】【分析】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。 【点评】考查主语从句的强调形式。

15．________ 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; what B. That; that C. What; that D. What; what 【答案】 A

【解析】【分析】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。逗号前有两个谓语动词，一个是are，一个是is known，故是两句话，需填连词连接这两句话，根据句意可知，前面是主语从句，故填that，此处的that，只起连接作用不作任何成分。about是介词，其后是个句子故应填连词把这两句话连接起来，所缺词作are的表语，故填what。因此选A。 【点评】考查名词性从句，本题涉及that引导的主语从句和what引导的宾语从句。

16．I never doubt .

A. whether this song is worth listening to B. if this song is worth listening C. that this song is worth listening D. that this song is worth listening to 【答案】 D

【解析】【分析】句意：我从来没有怀疑这首歌值得去听。根据句子结构分析，本句是宾语从句，根据主句I never doubt，可知从句是陈述句，故排除A 和B，又因为listen to为固定搭配，故选D。

【点评】考查宾语从句。注意识记宾语从句的用法。

17．______ will be in charge of the meeting has not been decided yet.

A. What B. Which C. That D. Who 【答案】 D

【解析】【分析】句意：谁将负责这次会议还没有决定。______ will be in charge of the meeting是一个主语从句，从句中缺少主语，指人，故选D。 【点评】考查名词性从句，本题涉及who引导的主语从句。

18．It was never clear ________ the man hadn't reported the accident sooner.

A. that B. how C. when D. why 【答案】 D

【解析】【分析】句意：这名男子没有早点报告这次事故的原因根本没有搞清楚。It在句中是形式主语，真正的主语是why引导的主语从句。故选D。 【点评】考查名词性从句，本题涉及why引导的主语从句。

19．We believe ________ you have been devoted to ________ naturally of great necessity. A. that; being B. all that; be C. that all; are D. what; is 【答案】 D

【解析】【分析】句意：我们相信你所投入的当然是非常必要的。分析句子可知，believe后接宾语从句，宾语从句中you have been devoted to缺少宾语，表示事物故用what；what you have been devoted to为主语，从句作主语，谓语动词用单数，故选D。

【点评】考查名词性从句和主谓一致，本题涉及what引导的主语从句和一般现在时。

20．Franklin told them all to be in Britain again.

A. how happy was he B. how happy he was C. how was he happy D. how he happy was 【答案】 B

【解析】【分析】句意：富兰克林告诉他们所有人他再一次来到英国是多么的开心。该句中有一个宾语从句做told的宾语，“他有多么开心”，这里是感叹句做的宾语，感叹词how+形容词+主语+谓语。故选B。

21．I know he's been curious about everything, but that's . Be patient!

A. what do kids like B. what kids like C. what are kids like D. what kids are like 【答案】 D

【解析】【分析】句意:我知道他对一切充满好奇，但那是小孩的样子。耐心点儿。That's后跟的是一个表语从句，从句要用陈述句语序，所以A,C错了B. what kids like那是孩子喜欢的东西，D. what kids are like那是小孩的样子.对一切充满好奇是小孩的行为，故选D like，动词，表示喜欢，有时态变化形式;be like表示像，like是介词，like没有词形变化。这是中考的常考点。

22．—What are you looking for? —My keys. I can't remember ___________.

A. where did I put them B. what I put them C. where I put them D. what did I put them 【答案】 C

【解析】【分析】题意：--你正在找什么？--我的钥匙。我不记得我放在什么地方了。考查宾语从句。特殊疑问句做宾语从句应用陈述语序：特殊疑问词+主语+谓语+其他。where 什么地方，故选C。

【点评】考查学生对特殊疑问句做宾语从句的熟练应用

23．Don't wait for people to be friendly, show them a friendly person you are.

A. what B. how C. when D. where

【答案】 A

【解析】【分析】句意：不要等到人们表现友好，要向他们展示你有多么友好。感叹句式：What+a+adj+n+主语+谓语。故选A。

【点评】考查感叹句用作宾语从句。

24．It that everyone to laugh．

A. seems，loves B. seem，love C. seems，love D. seem，loves 【答案】 A

【解析】【分析】句意：好像每个人都喜欢笑。 It seems that...好像，似乎，that引导的主语从句，it为形式主语；love to do sth.喜欢做... 根据句意故选A 。

【点评】此题考查了seem的句型搭配 ,涉及到形式主语；love的短语搭配，动词不定式短语作宾语。

25．— Doctor, it seems ______ you like to work with animals. — Yes, we should________ animals as our friends.

A. that; regard B. what; be regarded C. that; be regarded D. what; regard 【答案】 A

【解析】【分析】句意：—医生，看起来你喜欢和动物一起工作。—是的。我们应该把动物看做我们的朋友。It seems + that从句，其中it 是形式主语，that引导主语从句。Regard---as---（把------看做------）。故选A。

【点评】此题考查主语从句和固定搭配regard---as---。

26．You have spent too much time playing computer games.That's________ your eyes hurt. A. why B. how C. what D. when 【答案】 A

【解析】【分析】句意：你已经花了太多的时间玩电脑游戏。那就是为什么你眼睛疼。why：为什么，why your eyes hurt做is的表语，how：怎样，what：什么，when：什么时候，故选A。

【点评】考查表语从句。根据语境选出恰当的连接词。

27．It is still unknown how AI（人工智能）_______the way of our life as well as the world. A. change B. changed C. will change D. was changing 【答案】C

【解析】【分析】句意：人工智能将会怎么改变我们的生活方式和整个世界仍旧不为人所知。It是形式主语，真正的主语是后面how引导的从句，为主语从句。主句是一般现在时态，人工智能改变世界是没有发生的事情，用一般将来时态，其结构是will + 动词原形，

故选C。

【点评】考查主语从句的时态。注意主句是现在时或者将来时，从句用任何需要的时态。

28．That is _____we were late last time.

A. that B. when C. why D. what 【答案】 C

【解析】【分析】句意：这就是上次我们为什么迟到的原因。A.没有实际意义；B.当......时候；C.为什么；D.什么。为什么迟到，用why，引导名词性从句，做表语，故选C。 【点评】考查表语从句连接词用法，注意理解句意。

29．The question new measures should be taken to control the terrible air pollution is puzzles scientists a lot.

A. that; what B. which; that C. what; what D. that; that 【答案】 C

【解析】【分析】句意为：应该采取什么样的新措施来控制空气污染的问题，是让科学家非常困惑的事情。第一空根据主语question，可知措施并不明确，应该指“什么样的new measures”，关系词应用what；第二空，be动词is后的表语从句缺少主语，应用关系词what，故选C。

【点评】考查同位语从句。注意that引导同住语从句时，在句中不做成分，也没有词义。

30．______ makes the school proud is ______ more than 90% of the students have been admitted to universities.

A. what; because B. that; because C. that; what D. what; that 【答案】 D

【解析】【分析】句意：让学校骄傲的是，超过90%的学生被重点大学所录取。第一空主语从句中缺少主语，指代事情，故用what;第二空为表语从句，且从句中不缺少成分，故填关系词that。故选D。

【点评】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。