（英语）英语名词性从句练习题20篇一、初中英语名词性从句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． 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．_______ are playing an important part is well known to us all.A. That whoB. Those whoC. Who thatD. Who【答案】 D【解析】【分析】考查主语从句。
句意：谁起着重要作用，这是众所周知的。
主语从句缺少引导词，从句缺少主语，故选D。
4．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。
5．______ amazed the NBA world is ______ Kobe Bryant scored 81 points just in one game.A. That, whatB. What, thatC. That, thatD. 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。
6．______ 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。
7．They lost their way in the forest, and ________ made matters worse was that night began to fall.A. thatB. itC. whatD. 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。
8．________ 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。
9．Exactly _________ the potato was introduced into Europe is uncertain, but it was probably around 1565.A. whetherB. whenC. whyD. 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。
10．_______ 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。
11．______excited Jenny most was ______ she finally succeeded in ______seemed to be the most difficult exam to him.A. That; that; whichB. What; that; whatC. That; because; thatD. 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。
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．It was he said disappointed me.A. that; whatB. what; thatC. that; whichD. 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． 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小。