名词性从句单句语法填空练习题-2026届高三英语一轮复习

名词性从句单句语法填空练习题 解题提示：解题时先分析主句结构，确定从句类型，再根据从句中缺失成分选择引导词。 总则：如果从句“主谓宾”缺主语或宾语，用what或who； 若果从句“主系表”缺主语或表语，用what或who； 如果从句不缺“主谓宾”或“主系表”，则根据句子的意义和逻辑选择连接词。 that：在名词性从句中常作纯连接词，无实义，在宾语从句中有时可省略，但在主语、表语从句及表示强调、正式文体中通常保留。 whether/if：表示“是否”，引导主语从句、表语从句或介词后的宾语从句时，通常用whether；在宾语从句中两者常可互换，但若有or not或 to do，只能用whether。 疑问词（what, who, how, when, where, why等）：在从句中充当特定成分（主语、宾语、状语等），且有实际词义。 判断从句类型： 宾语从句：动词或介词后。 主语从句：位于句首作主语，或用it作形式主语。 表语从句：位于系动词（如is, was, remains等）之后。 Instructions: Fill in the blanks with appropriate conjunctions (that, whether, if, what, who, whom, whose, which, when, where, why, how, how many/much/long/often, etc.) . 1. Many scientists now believe ______ the key to solving the climate crisis lies in developing renewable energy sources on a global scale. 2. The headmaster announced at the assembly ______ the school would invest in a new library with digital resources for all students. 3. What really surprised the research team was ______ the ancient artifact remained perfectly preserved under such harsh conditions. 4. Whether we can complete the project on time depends largely on ______ the suppliers deliver the materials as promised. 5. In her graduation speech, she emphasized ______ every student should pursue their passion with courage and perseverance. 6. The detective’s primary concern at that moment was ______ the suspect had disappeared without leaving any trace behind. 7. ______ the famous author will attend the book fair in person remains uncertain due to her tight schedule. 8. After months of investigation, the committee finally revealed ______ the financial irregularities had occurred within the department. 9. My parents always taught me ______ honesty and hard work are the foundations of a meaningful and successful life. 10. The most valuable lesson I learned from the workshop is ______ effective communication requires both speaking and listening skills. 11. ______ caused the sudden power outage in the entire district is still under investigation by the engineering team. 12. The tour guide explained to the visitors ______ the historic castle had been built in the 15th century by a famous king. 13. Her greatest achievement in life, she often says, is ______ she helped hundreds of underprivileged children gain access to education. 14. ______ the international conference will be held next year has not been decided by the organizing committee. 15. The study clearly demonstrates ______ regular physical exercise can significantly improve mental health and cognitive function. 16. What puzzled the archaeologists most was ______ the ancient civilization had managed to construct such precise structures without modern tools. 17. We must consider carefully ______ we should allocate the limited resources to support the most urgent community projects. 18. ______ the young pianist won the international competition impressed everyone who knew his humble beginnings. 19. The contract explicitly states ______ all parties involved must maintain confidentiality about the project details. 20. The central question of the debate was ______ the government should prioritize economic growth or environmental protection. 21. Do you have any idea ______ often we need to update the software to ensure the security of our computer systems? 22. ______ he managed to solve the complex mathematical problem in just ten minutes amazed his teachers and classmates alike. 23. The principle behind the new policy is ______ every employee should have equal opportunities for professional development. 24. We have received reliable information ______ the company plans to launch a revolutionary product in the coming months. 25. The teacher’s main advice was ______ we should review the key concepts regularly instead of cramming before exams. 26. ______ the ancient manuscript was discovered in a remote village has provided new insights into medieval literature. 27. The manager inquired ______ the client had expressed any specific requirements for the upcoming advertising campaign. 28. The most challenging aspect of the expedition was ______ the team had to cross the treacherous mountain pass in severe weather. 29. Recent research suggests ______ learning a second language can delay the onset of agerelated cognitive decline. 30. ______ the famous artist drew inspiration from for his masterpiece is a topic of much discussion among art historians. 31. The agreement guarantees ______ all participants will receive a certificate upon completion of the training program. 32. His excuse for being late was ______ the public transportation system had experienced unexpected delays during rush hour. 33. ______ the new regulations will affect small businesses is a matter of great concern to local entrepreneurs. 34. The historian presented compelling evidence ______ the battle had taken place several miles north of the previously assumed location. 35. The core idea of the theory is ______ human behavior is influenced by a combination of genetic and environmental factors. 36. We need to determine ______ the proposed solution is feasible within the given time frame and budget constraints. 37. ______ the negotiations between the two countries will lead to a peaceful resolution remains to be seen in the coming weeks. 38. The instructions clearly indicate ______ users must set up a strong password to protect their personal information online. 39. The mystery surrounding the old mansion was ______ its former owner had vanished without a trace decades ago. 40. ______ the team should adopt a traditional or innovative approach for the marketing strategy is still under discussion. 41. Studies have confirmed ______ adequate sleep is essential for memory consolidation and overall brain health. 42. The real problem, in my opinion, is ______ many people do not have access to basic healthcare services in rural areas. 43. The witness could not recall ______ exactly the suspect was wearing at the time of the incident near the city center. 44. ______ the ancient language was deciphered by linguists has opened up a new window into understanding early human history. 45. The teacher emphasized in class ______ students must cite all their sources properly to avoid plagiarism in their research papers. 46. The crucial point in her argument was ______ economic policies should always consider their social impact on vulnerable groups. 47. No one could explain ______ the rare species of birds had suddenly migrated to this region during the winter season. 48. ______ the committee members finally agreed on after hours of heated debate was a compromise that satisfied no one completely. 49. The results of the survey indicate ______ a majority of citizens support the development of more public parks in the urban area. 50. Her initial assumption was ______ the technical issue could be resolved easily, but it turned out to be extremely complicated. 51. We must find out ______ the seminar on artificial intelligence will be held so that we can make necessary travel arrangements. 52. ______ some cultures develop complex rituals around daily activities continues to fascinate anthropologists around the world. 53. The report highlights ______ air pollution levels have exceeded safety limits in most major cities across the continent. 54. The key to success in this field is ______ you constantly update your skills to keep pace with technological advancements. 55. The director did not disclose ______ the filming of the sequel would begin, citing uncertainties in the production schedule. 56. ______ the young scientist achieved a breakthrough in renewable energy technology has brought hope for a sustainable future. 57. The rule states clearly ______ any participant who violates the code of conduct will be disqualified from the competition immediately. 58. The most remarkable aspect of the story is ______ the hero overcame seemingly insurmountable odds to achieve his goal. 59. Experts are debating ______ the current educational system adequately prepares students for the challenges of the 21st century. 60. ______ the treasure was hidden for centuries deep in the forest has inspired countless adventurers to search for it. 名词性从句单句语法填空练习题答案及详细解析 1. 答案：that 解析：主句谓语动词“believe”后接宾语从句，从句“the key to solving the climate crisis lies in...（解决气候危机的关键在于全球范围内发展可再生能源）”主谓宾结构完整，且无疑问含义，故用that引导，that在宾语从句中无实义，可省略但此处保留更正式。 2. 答案：that 解析：“announced”后为宾语从句，从句“the school would invest in...（学校将为所有学生投资建设带数字资源的新图书馆）”成分完整、语义明确，无疑问语气，用that引导宾语从句。 3. 答案：how/why 解析：主句系动词“was”后是表语从句，从句“the ancient artifact remained perfectly preserved...（这件古代文物在如此恶劣的条件下仍保存完好）”主谓结构完整，结合句意，需表达“如何/为什么保存完好”，故用how（表方式）或why（表原因）。 4. 答案：whether 解析：介词“on”后接宾语从句，从句“the suppliers deliver the materials as promised（供应商按承诺交付材料）”成分完整，且主句表达“能否按时完成项目取决于供应商是否按约交货”，介词后的“是否”需用whether，不能用if。 5. 答案：that 解析：“emphasized”后为宾语从句，从句“every student should pursue their passion...（每个学生都应勇敢且持之以恒地追求热爱）”成分完整、语义陈述，无疑问含义，用that引导。 6. 答案：why/how 解析：系动词“was”后是表语从句，从句“the suspect had disappeared without leaving any trace（嫌疑人毫无踪迹地消失了）”成分完整，结合句意需表达“为什么/如何消失”，故用why（表原因）或how（表方式）。 7. 答案：Whether 解析：句首为主语从句，从句“the famous author will attend the book fair...（这位著名作家会亲自参加书展）”成分完整，且句尾“remains uncertain（仍不确定）”表明从句表“是否参加”，主语从句表“是否”用whether，不能用if，且句首首字母大写。 8. 答案：where/how/why 解析：“revealed”后为宾语从句，从句“the financial irregularities had occurred...（财务违规行为在部门内发生）”成分完整，结合句意可表达“在哪里/如何/为什么发生”，故用where（表地点）、how（表方式）或why（表原因）。 9. 答案：that 解析：“taught me”后接宾语从句，从句“honesty and hard work are the foundations...（诚实和勤奋是有意义且成功人生的基础）”成分完整、语义为陈述观点，无疑问，用that引导。 10. 答案：that 解析：系动词“is”后是表语从句，从句“effective communication requires both speaking and listening skills（有效沟通需要听说双向能力）”成分完整、语义为总结教训，无疑问，用that引导。 11. 答案：What 解析：句首为主语从句，从句缺主语（“______ caused the sudden power outage”中“caused”前无主语），且指代事物（导致停电的东西），故用what引导主语从句，句首首字母大写。 12. 答案：that 解析：“explained to the visitors”后接宾语从句，从句“the historic castle had been built...（这座历史城堡是15世纪一位名王所建）”成分完整、语义为陈述事实，无疑问，用that引导。 13. 答案：that/how 解析：系动词“is”后是表语从句，从句“she helped hundreds of underprivileged children...（她帮助数百名贫困儿童获得教育机会）”成分完整，若表单纯陈述用that；若强调“如何帮助”则用how，两者均符合句意。 14. 答案：Where/When 解析：句首为主语从句，从句“the international conference will be held next year（国际会议明年举办）”成分完整，结合句意可表达“在哪里/何时举办”，故用Where（表地点）或When（表时间），句首首字母大写。 15. 答案：that 解析：“demonstrates”后为宾语从句，从句“regular physical exercise can significantly improve...（规律运动能显著改善心理健康和认知功能）”成分完整、语义为展示研究结论，无疑问，用that引导。 16. 答案：how 解析：系动词“was”后是表语从句，从句“the ancient civilization had managed to construct...（古文明在无现代工具的情况下建造如此精准的建筑）”成分完整，结合句意需表达“如何建造”，故用how引导。 17. 答案：where/how/whether 解析：“consider carefully”后接宾语从句，从句“we should allocate the limited resources...（我们应分配有限资源支持最紧急的社区项目）”成分完整，结合句意可表达“在哪里/如何/是否分配”，故用where（表分配对象）、how（表分配方式）或whether（表是否分配）。 18. 答案：That 解析：句首为主语从句，从句“the young pianist won the international competition（这位年轻钢琴家赢得国际比赛）”成分完整，且语义为强调事实，用that引导主语从句（that无实义但不可省略），句首首字母大写。 19. 答案：that 解析：“states”后为宾语从句，从句“all parties involved must maintain confidentiality...（所有相关方必须对项目细节保密）”成分完整、语义为合同条款，无疑问，用that引导。 20. 答案：whether 解析：系动词“was”后是表语从句，从句“the government should prioritize economic growth or environmental protection（政府应优先经济增长还是环境保护）”为选择疑问句，表“是否（选其一）”，用whether引导。 21. 答案：how 解析：“any idea”后接同位语从句（补充说明idea的内容），从句缺状语（“______ often we need to update”表“更新频率”），需用how构成“how often（多久一次）”，故填how。 22. 答案：How/That 解析：句首为主语从句，若强调“如何在十分钟内解出难题”，从句成分完整，用How；若单纯陈述“他十分钟解出难题”这一事实，从句成分完整，用That，两者均符合语境。 23. 答案：that 解析：系动词“is”后是表语从句，从句“every employee should have equal opportunities...（每位员工都应有平等的职业发展机会）”成分完整、语义为政策原则，无疑问，用that引导。 24. 答案：that 解析：“information”后接同位语从句（补充说明信息内容），从句“the company plans to launch a revolutionary product...（公司计划未来数月推出革命性产品）”成分完整、语义为信息内容，无疑问，用that引导。 25. 答案：that 解析：系动词“was”后是表语从句，从句“we should review the key concepts regularly...（我们应定期复习核心知识点而非考前突击）”成分完整、语义为老师建议，无疑问，用that引导。 26. 答案：That/Where 解析：句首为主语从句，若单纯陈述“古代手稿在偏远村庄被发现”这一事实，从句成分完整，用That；若强调“在哪里被发现”，则用Where，两者均符合句意。 27. 答案：whether/if 解析：“inquired”后为宾语从句，从句“the client had expressed any specific requirements...（客户是否对即将到来的广告活动提出具体要求）”表“是否”，宾语从句中whether和if可互换，故两者均可。 28. 答案：that/how 解析：系动词“was”后是表语从句，从句“the team had to cross the treacherous mountain pass...（团队必须在恶劣天气下穿越危险山口）”成分完整，若表单纯陈述用that；若强调“如何穿越”则用how，均符合语境。 29. 答案：that 解析：“suggests”后为宾语从句，从句“learning a second language can delay the onset...（学习第二语言能延缓与年龄相关的认知衰退）”成分完整、语义为研究结论，无疑问，用that引导（此处suggest表“表明”，非“建议”，故不用should）。 30. 答案：What/Where/Who 解析：句首为主语从句，从句缺宾语（“drew inspiration from”后缺宾语），结合句意，若指“什么事物”用What，指“哪里”用Where，指“谁”用Who，均符合语境。 31. 答案：that 解析：“guarantees”后为宾语从句，从句“all participants will receive a certificate...（所有参与者培训完成后将获得证书）”成分完整、语义为协议承诺，无疑问，用that引导。 32. 答案：that 解析：系动词“was”后是表语从句，从句“the public transportation system had experienced unexpected delays...（公共交通在高峰时段出现意外延误）”成分完整、语义为迟到借口，无疑问，用that引导。 33. 答案：How/Whether 解析：句首为主语从句，从句“the new regulations will affect small businesses（新规将影响小企业）”成分完整，若表“如何影响”用How，若表“是否会影响”用Whether，均符合句意。 34. 答案：that 解析：“evidence”后接同位语从句（补充说明证据内容），从句“the battle had taken place several miles north...（这场战役发生在之前推测地点以北数英里处）”成分完整、语义为证据内容，无疑问，用that引导。 35. 答案：that 解析：系动词“is”后是表语从句，从句“human behavior is influenced by a combination of genetic and environmental factors（人类行为受基因和环境共同影响）”成分完整、语义为理论核心观点，无疑问，用that引导。 36. 答案：whether/how 解析：“determine”后为宾语从句，从句“the proposed solution is feasible...（提议的解决方案在给定时间和预算内是否可行）”成分完整，若表“是否可行”用whether，若表“如何可行”用how，均符合语境。 37. 答案：Whether 解析：句首为主语从句，从句“the negotiations between the two countries will lead to a peaceful resolution（两国谈判将达成和平解决方案）”成分完整，且句尾“remains to be seen（有待观察）”表不确定性，需表“是否能达成”，故用Whether，句首首字母大写。 38. 答案：that 解析：“indicate”后为宾语从句，从句“users must set up a strong password...（用户必须设置强密码保护线上个人信息）”成分完整、语义为使用说明，无疑问，用that引导。 39. 答案：that/why 解析：系动词“was”后是表语从句，从句“its former owner had vanished without a trace...（其前主人数十年前毫无踪迹地消失）”成分完整，若表单纯陈述用that；若强调“为什么消失”则用why，均符合句意。 40. 答案：Whether 解析：句首为主语从句，从句“the team should adopt a traditional or innovative approach...（团队应采用传统还是创新营销策略）”为选择疑问句，表“是否（选其一）”，用Whether引导，句首首字母大写。 41. 答案：that 解析：“confirmed”后为宾语从句，从句“adequate sleep is essential for memory consolidation...（充足睡眠对记忆巩固和整体大脑健康至关重要）”成分完整、语义为研究结论，无疑问，用that引导。 42. 答案：that/why 解析：系动词“is”后是表语从句，从句“many people do not have access to basic healthcare services...（农村地区许多人无法获得基础医疗服务）”成分完整，若表单纯陈述用that；若强调“为什么无法获得”则用why，均符合语境。 43. 答案：what 解析：“recall”后为宾语从句，从句缺宾语（“______ exactly the suspect was wearing”中“wearing”后缺宾语），且指代事物（嫌疑人穿的衣服），故用what引导。 44. 答案：How/That 解析：句首为主语从句，若强调“如何破译古代语言”，从句成分完整，用How；若单纯陈述“语言被破译”这一事实，从句成分完整，用That，两者均符合句意。 45. 答案：that 解析：“emphasized in class”后接宾语从句，从句“students must cite all their sources properly...（学生必须正确引用所有来源以避免论文抄袭）”成分完整、语义为老师强调的要求，无疑问，用that引导。 46. 答案：that 解析：系动词“was”后是表语从句，从句“economic policies should always consider their social impact...（经济政策应始终考虑对弱势群体的社会影响）”成分完整、语义为论点核心，无疑问，用that引导。 47. 答案：why/how 解析：“explain”后为宾语从句，从句“the rare species of birds had suddenly migrated...（珍稀鸟类冬季突然迁徙至此区域）”成分完整，结合句意可表达“为什么/如何迁徙”，故用why（表原因）或how（表方式）。 48. 答案：What 解析：句首为主语从句，从句缺宾语（“______ the committee members finally agreed on”中“agreed on”后缺宾语），且指代事物（委员会达成的内容），故用what引导，句首首字母大写。 49. 答案：that 解析：“indicate”后为宾语从句，从句“a majority of citizens support the development of more public parks...（多数市民支持在市区建更多公园）”成分完整、语义为调查结果，无疑问，用that引导。 50. 答案：that 解析：系动词“was”后是表语从句，从句“the technical issue could be resolved easily...（技术问题能轻松解决）”成分完整、语义为初始假设，无疑问，用that引导。 51. 答案：where/when 解析：“find out”后为宾语从句，从句“the seminar on artificial intelligence will be held（人工智能研讨会将举办）”成分完整，结合句意可表达“在哪里/何时举办”，故用where（表地点）或when（表时间）。 52. 答案：Why/How 解析：句首为主语从句，从句“some cultures develop complex rituals...（一些文化围绕日常活动形成复杂仪式）”成分完整，结合句意可表达“为什么/如何形成”，故用Why（表原因）或How（表方式），句首首字母大写。 53. 答案：that 解析：“highlights”后为宾语从句，从句“air pollution levels have exceeded safety limits...（该大陆多数大城市空气污染超标）”成分完整、语义为报告重点，无疑问，用that引导。 54. 答案：that/how 解析：系动词“is”后是表语从句，从句“you constantly update your skills...（你持续更新技能以跟上技术发展）”成分完整，若表单纯陈述用that；若强调“如何更新”则用how，均符合句意。 55. 答案：when/where 解析：“disclose”后为宾语从句，从句“the filming of the sequel would begin（续集拍摄将启动）”成分完整，结合句意“因制作日程不确定未透露”，可表达“何时/何地启动”，故用when（表时间）或where（表地点）。 56. 答案：That/How 解析：句首为主语从句，若单纯陈述“年轻科学家在可再生能源领域取得突破”这一事实，从句成分完整，用That；若强调“如何取得突破”，则用How，两者均符合语境。 57. 答案：that 解析：“states clearly”后为宾语从句，从句“any participant who violates the code of conduct will be disqualified...（任何违反行为准则的参与者将立即被取消资格）”成分完整、语义为规则内容，无疑问，用that引导。 58. 答案：that/how 解析：系动词“is”后是表语从句，从句“the hero overcame seemingly insurmountable odds...（英雄克服看似不可逾越的困难实现目标）”成分完整，若表单纯陈述用that；若强调“如何克服”则用how，均符合句意。 59. 答案：whether/how 解析：“debating”后为宾语从句，从句“the current educational system adequately prepares students...（现行教育体系是否能让学生应对21世纪挑战）”成分完整，若表“是否能做到”用whether，若表“如何做到”用how，均符合语境。 60. 答案：Where/How 解析：句首为主语从句，从句“the treasure was hidden for centuries...（宝藏在森林深处埋藏数百年）”成分完整，结合句意可表达“在哪里/如何埋藏”，故用Where（表地点）或How（表方式），句首首字母大写。 1 学科网（北京）股份有限公司 $