名词性从句专项练习题及答案一、初中英语名词性从句1．_________ 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。

【点评】考查名词性从句，本题涉及what引导的主语从句。

2． 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。

3．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。

4．--- made her ashamed of herself?--- the lowest mark in her class.A. What; Because she gotB. Was it what; GettingC. What was it that; That she gotD. 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。

5．____ made me more unhappy was ___ the boy asked my friend to be his girlfriend and she agreed.A. What; thatB. That ; thatC. What; whetherD. 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．—Tell me something about your adventure in the rainforest, please.— We lost our way in the forest and ___ made matters worse was ___ night began to fall.A. what; thatB. it; thatC. it; becauseD. what; because【答案】 A【解析】【分析】考查名词性从句的连接词。

第一空what作主语从句的主语；第二空为表语从句的that。

7．They lost their way in the forest, and ___ made matters worse was that night began to fall.A. itB. whichC. thatD. 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。

8．_______ 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。

9．It has been pointed out ________ plays a vital role in driving away one's anxiety is one'ssweet childhood memories.A. what thatB. whichC. thatD. that what【答案】 D【解析】【分析】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。

【点评】考查名词性从句，本题涉及what引导的主语从句。

10．_______ caused the accident has not been found out yet.A. WhatB. WhichC. The thingD. 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。

11．I found _______ convenient to shop on line at home.A. it'sB. thatC. itD. that was【答案】 C【解析】【分析】句意：我发现在家网购和方便。

固定句式：主+find+it+adj+to do，主语发现做某事是……的，故选C。

【点评】考查it做形式宾语，熟练掌握固定句式：主+find+it+adj+to do。

12．______ 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。

13．It was never clear ________ the man hadn't reported the accident sooner.A. thatB. howC. whenD. 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。

14．I wonder .A. how will you celebrate ThanksgivingB. that the Water Festival is really fun.C. what do people eat on the Mid-Autumn FestivalD. whether you will make resolution on New Year's Day【答案】 D【解析】【分析】句意：我想知道你是否将在新年做决定。

A. how will you celebrate Thanksgiving你要怎样庆祝感恩节；B. that the Water Festival is really fun. 泼水节真的有趣；C. what do people eat on the Mid-Autumn Festival中秋节人们叫什么？D. whether you will make resolution on New Year's Day你是否会在新年做决定。

Wonder后跟的是宾语从句，宾语从句要用陈述语序。

A，C错了。

Wonder：对……感到疑惑，想知道，后常跟一个含有“疑问”意义的宾语从句，B错。

故选D。

15．You will never guess ________.A. who am I waiting forB. what has happenedC. how can she help meD. where did I go【答案】 B【解析】【分析】句意：你永远不会猜到发生了什么事。

宾语从句用陈述句语序，故A、C、D错，happen的主语是所发生的事情，其结构是：sth happen to sb，所以what has happened中what指事，是主语，句子是陈述句语序。

故选B。

16．Don't wait for people to be friendly, show them a friendly person you are.A. whatB. howC. whenD. 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。