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名词性从句知识点梳理及经典练习(超详细)

名词性从句知识点梳理及经典练习(超详细)一、名词性从句1. ---- Let's send him home. Do you know _________?---- I have no idea.A. where does he liveB. where he livesC. he where livesD. he lives where【答案】 B【解析】【分析】句意:----让我们把他送回家。

你知道他住在哪里吗?----我不知道。

宾语从句就是一个句子作动词或介词的宾语。

宾语从句由特殊疑问句变来就用原来的疑问词作引导。

在宾语从句中只能使用陈述句语序,不能用疑问句语序。

所以选B。

2. is clear to the members of the committee is that the President will not give in to their demands.A. WhoB. ItC. AsD. 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; whenB. What; whether; asC. What; that; asD. 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.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; whetherB. focused; ifC. has focused; whetherD. 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.5.____ he will offer us enough help doesn't matter a lot to our success.A. IfB. WhetherC. BeforeD. How【答案】 B【解析】【分析】句意:他是否提供帮助对于我们的成功没有什么关系。

If不可以引导主语从句,故选B。

【点评】考查名词性从句,本题涉及whether引导的主语从句的应用。

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.________ we may find interesting is that it usually takes more to be polite.A. ThatB. WhatC. WhichD. /【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。

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.________ his failure lies is expected ________ clear to us.A. What… to makeB. How… madeC. Where… to be madeD. 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.11.______ makes the school proud is ______ more than 90% of the students have been admitted to universities.A. what; becauseB. that; becauseC. that; whatD. 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。

12.________ manners are very important in every country is known to all,but the trouble isthat 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。

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