20252025年名词性从句知识点

2025-2025 年名词性从句知识点(大全)(1)一、名词性从句1 ． is known to all is that the earth is smaller than the sun. A. As B. What C. It D. Which【答案】 B 【解析】【分析】句意：众所周知地球比太阳小。 is known to all 是主语从句，从句中缺少主语，因此用 what，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 known to us all is that China has launched Shenzhou VII spaceship, ____ made the country's first spacewalk successful. A. That; what B. What; which C. It; which D. As; that【答案】 B 【解析】【分析】句意：众所周知，中国已经发射了神州 7 号宇宙飞船，这是中国首次成功的太空行走。第一空处为主语从句，从句缺少主语，需用 what 引导；第二空所在句子是个定语从句，先行词为整个主句的内容，从句中缺少主语，需用 which 引导。故选 B。 【点评】考查名词性从句和定语从句，本题涉及主语从句和非限制性定语从句的应用。3 ． While some behaviors may seem strange to you, remember you consider normal probably seems just as unusual to others. A. it; that B. what; that C. that; what D. which; that【答案】 C 【解析】【分析】句意：虽然有些行为对你来说可能很奇怪，但请记住，你认为正常的行为对别人来说可能也不寻常。第一空为宾语从句，从句结构完整用 that 起连接作用，第二空为主语从句，从句中 consider 缺少宾语，应该用 what，故选 C。 【点评】考查名词性从句，本题涉及 that 引导的宾语从句和 what 引导的主语从句。4．________ is known to us all that the old scientist, for ________ life was hard in the past, still works hard in his eighties. A. As; whose B. It; whose C. As; whom D. It; whom【答案】 D 【解析】【分析】句意：我们都知道，那位老科学家，过去生活很艰苦，到了八十多岁还在努力工作。第一空 it is known to us all that…是个固定句型，意为“众所周知…”；第二空为介词+关系代词引导的定语从句，先行词 the old scientist 指人，作介词 for 的宾语，只能用 whom，故选 D。 【点评】考查名词性从句和定语从句，本题涉及固定句式 i...