最新名词性从句培优训练(1)

最新 名词性从句培优训练(附解析)（word）(1)一、名词性从句1．________ is the centre of our planetary system was a difficult concept to grasp in the Middle Ages. A. It's the sun and not the earthB. The sun and not the earthC. Being the sun and not the earthD. That the sun and not the earth【答案】 D 【解析】【分析】句意：太阳而不是地球是我们行星系统的中心，这在中世纪是一个很难理解的概念。分析句子可知，整个句子为主系表结构，was 为系动词，它之前的都为主语，且主语由句子来充当，句子结构以及句意完整，所以连词代词为 that。故选 D。 【点评】考查名词性从句，本题涉及 that 引导的主语从句。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 ． 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。4．________ is known to us all that the old scientist, for ________ life was hard in t...