【英语】名词性从句-知识点归纳与练习经典1

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【英语】名词性从句-知识点归纳与练习经典1
一、名词性从句
1. is known to all is that the earth is smaller than the sun.
A. As
B. What
C. It
D. Which
【答案】 B
【解析】【分析】句意:众所周知地球比太阳小。

is known to all 是主语从句,从句中缺少主语,因此用what,选B。

【点评】考查名词性从句,本题涉及what引导的主语从句。

2. 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。

3. is even more important is the earth cooled down, water began to appear on its surface.
A. When; that; when
B. What; whether; as
C. What; that; as
D. lt; whether; as 【答案】 C
【解析】【分析】这题考查从句的用法,第一空填what引导主语从句,在主语从句中what做主语,第二空填that引导表语从句,在表语从句中,as是引导时间状语从句,句意是:甚至更重要的是:随着地球的冷却,水开始出现在表面。

选C。

4.Has it been announced ______?
A. when are the planes to take off
B. that are the planes to take off
C. where are the planes to take off
D. when the planes are to take off
【答案】 D
【解析】【分析】句意: 飞机什么时候起飞已经宣布了吗?此处是when引导的主语从句,且要用陈述句语序,故选D。

【点评】考查名词性从句,it作形式主语,关系副词when引导的从句作真正的主语。

5.____ 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。

6.________ 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。

7.______ amazed the NBA world is ______ Kobe Bryant scored 81 points just in one game.
A. That, what
B. What, that
C. That, that
D. What, what
【答案】 B
【解析】【分析】句意:使NBA世界惊讶的是Kobe Bryant在一场比赛中得了81分。

根据句意可知,句子主语是一个主语从句,引导词即起引导作用又要做从句的一个成分,所以第一空填What;第二空是that引导的表语从句,只起引导作用,故选B。

【点评】考查名词性从句,本题涉及关系代词what引导的主语从句和表语从句的应用。

8.They lost their way in the forest, and ________ made matters worse was that night began to fall.
A. that
B. it
C. what
D. which
【答案】 C
【解析】【分析】句意:他们在森林里迷路了,更糟糕的是天开始黑了。

根据连词and可知,本句需要一个引导主语从句的连接词,该词同时还要能在从句里充当主语。

that不能在句中作成分;it不能引导主语从句;which意为“哪一个”,不符合本句语境。

排除A、B、D三项。

故选C。

【点评】考查名词性从句,本题涉及what引导的主语从句的应用。

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】句意:他们在森林里迷路了,情况更糟糕的是天又黑了。

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。

故选D。

【点评】考查名词性从句,本题涉及what引导的主语从句的应用。

10.Exactly _________ the potato was introduced into Europe is uncertain, but it was probably around 1565.
A. whether
B. when
C. why
D. how
【答案】 B
【解析】【分析】句意:土豆被引进欧洲具体的事件不被确定,但是可能是在1565年左右。

根据时间状语round 1565得知这里是指时间不确定。

故选B。

【点评】考查名词性从句,本题涉及when引导的主语从句。

11._______ is troubling me is ______ I don't understand ________ he said
A. What; that; what
B. What; what; what
C. That; that; what
D. Why; that; which 【答案】 A
【解析】【分析】句意:我烦恼的是我不明白他说的话。

第一空是主语从句,从句中缺主语,要用What;第二空是表语从句,从句不缺成分,所以要填that;第三空是宾语从句,从句中的动词understand缺宾语,要填what。

故选A。

【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的应用。

12.______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。

13.________ 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
【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。

14._____ is known to us all is that China has launched Shenzhou VII spaceship, ____ made the country's first spacewalk successful.
A. That; what
B. What; which
C. It; which
D. As; that
【答案】 B
【解析】【分析】句意:众所周知,中国已经发射了神州7号宇宙飞船,这是中国首次成功的太空行走。

第一空处为主语从句,从句缺少主语,需用what引导;第二空所在句子是个定语从句,先行词为整个主句的内容,从句中缺少主语,需用which引导。

故选B。

【点评】考查名词性从句和定语从句,本题涉及主语从句和非限制性定语从句的应用。

15.________ 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 earth
B. The sun and not the earth
C. Being the sun and not the earth
D. That the sun and not the earth
【答案】 D
【解析】【分析】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。

【点评】考查名词性从句,本题涉及that引导的主语从句。

16.Is this school they visited the other day?
A. that
B. which
C. where
D. the one
【答案】 D
【解析】【分析】句意:这就是几天前他们参观的那间学校吗?根据 Is this school they visited the other day? ,可知主句中缺表语,应用the one指代this school;再根据they visited the other day? ,可知在the one后边紧跟的是that引导的定语从句,that句中做visit的宾语故省略。

故选D。

【点评】考查表语从句和定语从句。

注意关系词that在从句中做宾语时可省略。

17.______ will be in charge of the meeting has not been decided yet.
A. What
B. Which
C. That
D. Who
【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.______ has caused great confusion is ______ he made it without anyone else's help.
A. What; that.
B. What; how.
C. It; how.
D. It; that.
【答案】 B
【解析】【分析】句意:让人极大困惑的是他如何在没有别人帮助的情况下做到这一点的。

表示“让人困惑的事情”用what引导主语从句,表示“如何做到的”用how表方式,引导表语从句。

故选B.
【点评】考查名词性从句,本题涉及what引导的主语从句和how引导的表语从句。

19.It is clever ______ you ______ out the problem.
A. for; to work
B. of; working
C. for; working
D. of; to work
【答案】D
【解析】【分析】it可指代下文内容做形式主语,其主要有两种形式:1、It's + 形容词 + of + sb + to do sth.这个句型,形容词一般为sb的所具有的一种品质性格。

2、It's + 形容词+ for + sb + to do sth.这个句型,形容词不是sb所具备的品质性格。

句意:能算出这道难题,你真是太聪明了。

结合语境可知选D。

【点评】it是人称代词,在句子中可以做形式主语,形式宾语,这是经常考察的内容,平时应注意总结,加强练习.
20.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。

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:我知道他对每件事都充满好奇, 但这是小孩的样子。

要有耐心。

由题意知: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.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.对一切充满好奇是小孩的行为, 故选D。

【点评】表语从句。

22.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。

23.Pay no attention to those who laugh at you. What matters most is ________ you see yourself.
A. what
B. when
C. how
D. which
【答案】 C
【解析】【分析】句意:不要在意那些嘲笑你的人,最重要的是你如何看待你自己。

本题考查表语从句,A.什么;B.当……时候;C.怎样;D.哪一个。

根据句意,翻译成“如何”。

故选C。

【点评】考查how引导的表语从句。

24.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。

25.The school library is ________ we can read many books and magazines.
A. what
B. where
C. when
D. which
【答案】 B
【解析】【分析】句意:学校图书馆是我们能够看书看杂志的地方。

What(什么),where(哪里),when(什么时候)which(哪一个)。

we can read many books and magazines修饰主语,是一个表语从句。

图书馆是一个地方,连接词用where。

故选B。

【点评】考查表语从句的连词。

26.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。

27. doesn't matter you come or not.
A. That; whether
B. It; whether
C. That; if
D. It; if
【答案】 B
【解析】【分析】句意:你来不来无关紧要。

根据句末or not,要用连词whether;有句子结构可知,此处是whether引导主语从句,放在句末,用it作形式主语。

故选B。

【点评】考查连词和代词辨析。

根据句子结构,选择正确的一项。

28. was most important to her, she told me, was her family.
A. It
B. This
C. What
D. As
【答案】 C
【解析】【分析】句意:她告诉我对于她来说最重要的就是她的家庭。

she told me是插入语,因此用what引导主语从句,在句子中作主语,故选C。

【点评】考查what引导主语从句的用法。

29.The place the bridge is supposed to be built should be the cross-river traffic is the heaviest.
A. which; where
B. at which; which
C. at which; where
D. which; in which 【答案】 C
【解析】【分析】句意:桥梁应该建在水上交通最繁忙的地方。

定语从句,代指地方,用where/介词+which,根据the place,可知前面用介词at,表示在……地方,做地点状语,介词提前,因此用at which;根据 the cross-river traffic is the heaviest,可知是对桥所在地点的描述,因此用where,引导表语从句,故选C。

【点评】考查定语从句与表语从句的引导词。

30._______ caused the accident has not been found out yet.
A. What
B. Which
C. The thing
D. That
【答案】 A
【解析】【分析】句意:造成事故的原因还没有查明。

此处为主语从句,从句中缺少主语,应该用what引导,故答案为A。

【点评】考查主语从句。

以及what的含义。

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