（英语） 初中英语名词性从句试题(有答案和解析)含解析
一、初中英语名词性从句
1．_______ caud 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。
2．It has been pointed out ________ plays a vital role in driving away one's anxiety is one's sweet childhood memories.
A. what that B. which C. that D. 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。
3．___ surprid me most was ____the girl pasd the driver test.
A. That; that B. What; how C. What; that D. 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。 ___ surprid me most 是一个主语从句，从句中缺少主语，故填what； ____the girl pasd 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。
4． 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。
5．Some people believe _______ has happened before or is happening now will repeat itlf in the future.
A. whatever B. whenever C. wherever D. no matter what
【答案】 A
【解析】【分析】句意：一些人认为之前发生的或现在正在发生的任何事情在将来都会重复发生。Whatever has happened before or is happening now是一个主语从句，whatever既引导起这个主语从句，也在句中做主语。BC项都属于副词的性质，都不能做主语，通常只能做状语；no matter what只能用来引导状语从句，故选A。
【点评】考查名词性从句，本题涉及"特殊疑问词+ever"引导的主语从句。
6． 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。
7．—Tell me something about your adventure in the rainforest, plea.
— We lost our way in the forest and ___ made matters wor was ___ night began to fall.
A. what; that B. it; that C. it; becau D. what; becau
【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。
8．________ 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。
9．______ 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。
10．They lost their way in the forest, and ________ made matters wor 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。
11．________ has been proved is that animals and incts have their own languages.
