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名词性从句易错题经典

名词性从句易错题经典一、名词性从句1.______ 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。

2.___ surprised me most was ____the girl passed the driver test.A. That; thatB. What; howC. What; thatD. That; why【答案】 C【解析】【分析】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。

【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。

3.________ is known to us all that the old scientist, for ________ life was hard in the past, still works hard in his eighties.A. As; whoseB. It; whoseC. As; whomD. 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引导的限制性定语从句。

4.Has it been announced ______?A. when are the planes to take offB. that are the planes to take offC. where are the planes to take offD. 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.It is a rule in his family that _______ comes home first should cook the dinner.A. anybodyB. whoC. whoeverD. who that【答案】 C【解析】【分析】句意:在他的家里有个规定,就是先到家的人要先做饭。

whoever 有两个词义:1no matter who,在这种用法时引导一个让步状语从句;2anybody that,在这种用法时,它连接一个名词性从句,在本题中它连接的是主语从句。

这里就是第二个用法。

所以选C。

6._______ you don't like him is none of my business.A. WhatB. WhoC. ThatD. Whether【答案】 C【解析】【分析】句意:你不喜欢他,跟我没有什么关系。

you don't like him为主语从句,其内容已经是完整的,所以用that,且引导主语从句的that不能省略。

7.________ the weather will not clear up until next week is bad news for us.A. AsB. IfC. WhetherD. 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。

8.______ is our belief that improvements in health care will lead to a stronger, more prosperous economy.A. WhichB. WhatC. ItD. As【答案】 C【解析】【分析】句意:医疗保健的进步将促进一个更强大、更繁荣的经济,这是我们的信念。

that引导的是主语从句,故空格处应该用it作形式主语,代替真正的that引导的主语从句。

故答案选C。

【点评】考查it的用法,以及主语从句的应用。

9.________ has been proved is that animals and insects have their own languages.A. WhatB. AsC. ItD. That【答案】 A【解析】【分析】句意:已被证明的是动物和昆虫有自己的语言。

根据is判断,此处为主语从句,分析该从句,缺少主语,用what。

选A。

【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._______ makes me feel worried is _______ singing stars are centered on by masses of teenagers today.A. What; whatB. That; thatC. What; thatD. That; what【答案】 C【解析】【分析】句意:让我感到担忧的是,今天的歌星是以青少年为中心的。

分析句子可知,主语从句中的谓语动词makes 缺少主语,主语从句中缺少宾语一般用what,因此选择 what 来引导主语从句;系动词 is 后面的表语从句句意完整,不缺少成分,因此选择 that 引导表语从句。

分析选项可知C项符合题意,故选C。

【点评】考查名词性从句,本题涉及what引导的主语从句和that引导的表语从句的应用。

11._______ is troubling me is ______ I don't understand ________ he saidA. What; that; whatB. What; what; whatC. That; that; whatD. 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.________ 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】【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。

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】【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。

14._____ is known to us all is that China has launched Shenzhou VII spaceship, ____ made the country's first spacewalk successful.A. That; whatB. What; whichC. It; whichD. 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 known to all is that the earth is smaller than the sun.A. AsB. WhatC. ItD. Which【答案】 B【解析】【分析】句意:众所周知,地球比太阳还小。

复合句的主语是一个名词性从句,从句没有引导词和主语,表示“所……的(事)”,故用what引导,其双重作用,故选B。

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