高中英语表语从句考点解读和专练精讲

高中英语表语从句考点解读和专练精讲(解析版) 表语从句考点解读 一、基本概念 表语从句：在复合句中充当表语的从句，相当于一个名词，用来补充说明主语的身份、性质、状态、内容、结果或情况，位于系动词（be动词、感官动词、变化类动词等）之后，是句子的核心补充成分。 核心特点： 1. 从句不能单独成句，必须依附于主句，充当主句中系动词的表语，补充说明主语； 2. 从句由引导词引导，引导词不充当主句成分，只连接主句（主语+系动词）和表语从句，部分引导词在从句中充当一定成分； 3. 表语从句的位置固定：主语 + 系动词 + 表语从句（核心结构，无其他呈现形式）； 4. 表语从句作表语时，主句主语为单数，系动词用单数；主语为复数，系动词用复数（遵循主谓一致）。 核心组成：主语 + 系动词 + 引导词 + 表语从句 常见系动词（表语从句必备，高考高频）： 1. be动词：am, is, are, was, were（最常用，后接表语从句表身份、性质、状态）； 2. 感官系动词：look（看起来）、sound（听起来）、smell（闻起来）、taste（尝起来）、feel（摸起来）； 3. 变化类系动词：become（变得）、get（变得）、turn（变得）、grow（变得）、go（变得，多表负面变化）； 4. 其他系动词：seem（似乎）、appear（似乎）、prove（证明是）、remain（保持）、stay（保持）。 引导词分类（高考核心，分3大类，与主语从句引导词一致，用法有差异）： 1. 连接词（不充当从句成分，只起连接作用）：that（无含义）、whether（是否，表选择）； 2. 连接代词（在从句中充当主语、宾语、表语、定语）：what（……的事情/东西）、who（谁，指人）、whom（谁，指人，作宾语）、whose（……的，表所属）、which（哪一个，表选择）、whoever（无论谁）、whatever（无论什么）、whichever（无论哪一个）； 3. 连接副词（在从句中充当状语）：when（什么时候）、where（在哪里）、why（为什么）、how（如何，怎样）、whenever（无论何时）、wherever（无论何地）、however（无论怎样）。 二、核心考点：引导词的用法（高考重中之重） （一）连接词的用法（that vs whether） 1. that 核心功能：无实际含义，只起连接作用，不充当从句任何成分；引导的表语从句语义完整，无需补充信息。 关键注意点： 大多数情况下可省略（区别于主语从句：主语从句句首that不可省略，表语从句that可省）； 当主句主语为reason（原因）时，表语从句引导词只能用that（易错点：不可用because），构成句式“The reason is that...”。 例句： My hope is (that) he will pass the exam.（表语从句语义完整，that可省略） The reason why he was late is that he missed the bus.（主句主语为reason，表语从句用that，不可用because） Her dream is (that) she can become a doctor in the future.（that无含义，不充当成分，可省略） 2. whether 核心功能：有实际含义“是否”，起连接作用，不充当从句成分；引导的表语从句语义不完整，存在“是/否”的选择。 关键注意点： 可与or not连用（whether...or not），or not可放在whether之后或从句末尾； 不可与if互换（易错点：if不能引导表语从句，无论位置如何，表语从句表“是否”只能用whether）； 常见搭配：be sure whether...、be uncertain whether...、depend on whether...。 例句： The question is whether he will attend the meeting.（表语从句表“是否”，用whether，不可用if） I am not sure whether he will come or not.（与or not连用，用whether） Our success depends on whether we can work together.（依赖于“是否能合作”，用whether） （二）连接代词的用法（核心：充当从句成分） 核心功能：既起连接作用，又在表语从句中充当主语、宾语、表语或定语，需根据从句成分和句意选择（用法与主语从句基本一致，位置不同）。 1. what（高频考点） 含义：“……的事情”“……的东西”“……的内容”，在从句中常作主语、宾语、表语，指代事物。 例句： What he said is what surprised us most.（前一个what作主语从句宾语，后一个what作表语从句主语） My biggest wish is what I can spend more time with my family.（what在表语从句中作宾语，指代“能多陪家人”这件事） This is what we need to do first.（what在表语从句中作宾语，指代“我们首先需要做的事情”） 2. who/whom 含义：who“谁”（指人），在从句中作主语；whom“谁”（指人），在从句中作宾语（口语中可被who替代）。 例句： The person in the photo is who helped me yesterday.（who在表语从句中作主语） I don’t know who he is talking to.（who替代whom，在表语从句中作宾语） The man you saw just now is whom we are looking for.（whom在表语从句中作宾语，正式用法） 3. whose 含义：“……的”，表所属关系，在从句中作定语，后接名词，可指代人或物。 例句： The book on the desk is whose it is.（whose在表语从句中作定语，修饰it，表“谁的”） I wonder whose pen this is.（whose在表语从句中作定语，修饰pen，指代“谁的笔”） The house over there is whose family lives nearby.（whose指代人，修饰family，表所属） 4. which 含义：“哪一个”，表选择，在从句中作主语、宾语、定语，指代人或物（有明确的选择范围）。 例句： The problem is which team we should support.（which在表语从句中作定语，修饰team，有选择范围） I can’t decide which one is better.（which在表语从句中作主语，表“哪一个更好”） The question is which book we should read first.（which在表语从句中作宾语，有明确选择范围） 5. 复合连接代词（whoever/whatever/whichever） 含义：“无论谁”“无论什么”“无论哪一个”，表让步，在从句中作主语、宾语、定语，语气比普通连接代词更强。 例句： My advice is whoever breaks the rules should be punished.（whoever在表语从句中作主语，表“无论谁”） Happiness is whatever you do with a positive attitude.（whatever在表语从句中作宾语，表“无论做什么”） The choice is whichever way you think is right.（whichever在表语从句中作定语，修饰way，表“无论哪条路”） （三）连接副词的用法（核心：充当从句状语） 核心功能：既起连接作用，又在表语从句中充当时间、地点、原因、方式状语，需根据从句语义和成分选择（用法与主语从句基本一致，位置不同）。 1. when/where/why 含义：when“什么时候”（时间状语）、where“在哪里”（地点状语）、why“为什么”（原因状语）。 例句： The problem is when we will start the trip.（when在表语从句中作时间状语） This is where we held the party last year.（where在表语从句中作地点状语） The reason why she cried is why she was misunderstood.（why在表语从句中作原因状语） 2. how 含义：“如何，怎样”，在从句中作方式状语，也可表示“多么”（修饰形容词/副词，表程度）。 例句： The key is how we can solve this problem quickly.（how在表语从句中作方式状语） I don’t know how fast he can run.（how修饰fast，表程度，“多么快”） The question is how we can improve our English in a short time.（how作方式状语，表“如何提升”） 3. 复合连接副词（whenever/wherever/however） 含义：“无论何时”“无论何地”“无论怎样”，表让步，在从句中作状语。 例句： My promise is whenever you need help, I will be there.（whenever在表语从句中作时间状语） Home is wherever we feel warm and safe.（wherever在表语从句中作地点状语） The result depends on however hard we try.（however修饰hard，在表语从句中作方式状语） 三、必考点：引导词的辨析与选择（高考核心，规避易错点） （一）that vs whether（高频辨析） 看从句语义：语义完整（无“是否”含义）→ 用that；语义不完整（有“是否”选择）→ 用whether； 看主句主语：主句主语为reason时，表语从句只能用that，不可用because（易错点）； 特殊注意：表语从句中that可省略，whether不可省略，且不可用if替代。 例句对比： His decision is that he will study abroad.（语义完整，用that，可省略） His decision is whether he will study abroad.（语义不完整，表“是否”，用whether） The reason is that he is ill.（正确：主句主语为reason，用that） The reason is because he is ill.（错误：不可用because，需改为that） （二）what vs that（高频易错点） that：无含义，不充当从句成分，只起连接作用，从句语义完整； what：有含义（“……的事情/东西”），在从句中充当主语、宾语、表语，从句语义不完整（缺成分）。 例句对比（易错警示）： My wish is that he said at the meeting.（错误：从句缺宾语，that不能充当宾语） My wish is what he said at the meeting.（正确：what在从句中作宾语，指代“他说的话”） My wish is that he will come soon.（正确：从句“he will come soon”语义完整，that只起连接作用） （三）whether vs if（表语从句中） 表语从句中，只能用whether，不能用if（核心易错点，区别于主语从句“it作形式主语时可换if”），三种常见场景均需用whether： 1. 表语从句表“是否”，无论位置如何，均用whether； 2. 表语从句后接or not时，只能用whether； 3. 表语从句位于介词后（作介词宾语，本质还是表语从句），只能用whether。 例句对比： The question is whether he will come or not.（正确：表语从句+or not，用whether） The question is if he will come or not.（错误：表语从句不能用if） It depends on whether he will agree.（正确：表语从句位于介词on后，用whether） （四）连接代词 vs 连接副词 判断口诀：从句缺主语、宾语、表语、定语 → 用连接代词；从句缺时间、地点、原因、方式状语 → 用连接副词（与主语从句完全一致）。 例句对比： The problem is how we will get there.（从句“we will get there”缺方式状语 → 用how，连接副词） The problem is what we will take there.（从句“we will take there”缺宾语 → 用what，连接代词） The question is when we will get there.（从句缺时间状语 → 用when，连接副词） 四、高考高频固定搭配与易错点 （一）高频固定搭配（表语从句常用结构，高考必背） 1. The reason is that...（最高频，“……的原因是……”，不可用because）； 2. It seems/appears that...（“似乎……”，表语从句位于系动词后）； 3. be sure/certain whether...（“确定/不确定是否……”，表语从句用whether）； 4. depend on whether/what/how...（“取决于是否/什么/如何……”，表语从句作介词宾语）； 5. be + 形容词（clear, obvious, important等）+ that从句（表语从句语义完整）。 例句： The reason why he failed is that he didn’t study hard.（高频考点，reason后用that） It seems that he is very tired.（系动词seem后接表语从句） I am certain whether he will keep his promise.（be certain后接whether引导的表语从句） Our success depends on how we cooperate with each other.（depend on后接表语从句） （二）易错点总结（必考规避，高频丢分点） 1. 主句主语为reason时，表语从句引导词只能用that，不可用because（高频易错）； 2. 表语从句中，whether不可用if替代，无论是否接or not、无论是否位于介词后； 3. that引导表语从句时，大多数情况下可省略，但当表语从句较长、较复杂，或为了强调时，that不可省略； 4. what和that的区别：what充当从句成分，that不充当成分，从句缺成分用what，不缺成分用that； 5. 复合连接代词/副词（whoever/whatever等）表“无论……”，不可与no matter who/no matter what混淆（no matter...结构不能引导表语从句）； 6. 连接代词whose后必须接名词，不能单独使用（如：whose is this 错误，应为whose book is this）。 五、做题万能三步法 1. 判断是否为表语从句：看从句是否位于系动词之后，是否补充说明主语的身份、状态、内容等； 2. 分析表语从句成分：看从句中缺少什么成分（主语、宾语、表语、定语 → 连接代词；状语 → 连接副词；不缺成分 → 连接词that/whether）； 3. 结合句意选择引导词：根据从句语义（是否表“是否”、是否表“无论……”、是否有选择范围），匹配对应的引导词，同时规避易错点（如reason后用that、不用if等）。 表语从句专练精讲 专项一：单句语法填空 解题提示：每题聚焦1个核心考点，重点考查引导词的选择、引导词辨析及易错点规避，贴合高考语法填空题型。 1. My dream is ______ I can become a scientist in the future. 2. The reason why she didn’t come is ______ she was ill. 3. The question is ______ he will attend the meeting or not. 4. This is ______ we held the party last year. 5. His biggest worry is ______ he can pass the exam. 6. The key is ______ we can solve this problem quickly. 7. I don’t know ______ he is talking about. 8. The problem is ______ team will win the game. 9. Happiness is ______ you do with a positive attitude. 10. The reason for his success is ______ he works hard every day. 11. This is ______ book I borrowed yesterday. 12. The question is ______ we will start our trip. 13. I am not sure ______ he will keep his promise. 14. Our success depends on ______ we can work together. 15. The man in the photo is ______ helped me yesterday. 16. It seems ______ he is very angry. 17. The problem is ______ hard he tries, he can’t finish the work on time. 18. This is ______ I want to say to you. 19. The reason why he was late is ______ he missed the bus. 20. I wonder ______ pen this is. 21. The choice is ______ way you think is right. 22. The question is ______ we can get there on time. 23. It appears ______ he has made great progress. 24. My advice is ______ we should learn from mistakes. 25. The problem is ______ he will help us. 26. This is ______ we can find the best solution. 27. I am certain ______ he will come soon. 28. The reason for his failure is ______ he didn’t listen to others’ advice. 29. The question is ______ we should choose this plan or that one. 30. Home is ______ we feel warm and safe. 专项二：语法填空 Passage 1： Everyone has a dream. My dream is ______1______ I can travel around the world one day. The reason why I have this dream is ______2______ I want to experience different cultures and meet different people. Many people ask me ______3______ I will realize my dream. My answer is ______4______ I will work hard to save money and improve my English. It seems ______5______ many people have similar dreams. The key is ______6______ we can stick to our dreams and never give up. Some people wonder ______7______ they can achieve their dreams quickly. My advice is ______8______ success takes time and patience. The most important thing is ______9______ we have a clear goal and keep moving forward. I believe ______10______ my dream will come true one day. Passage 2： Education is very important for everyone. The purpose of education is ______1______ we can become better people and make contributions to society. Many students wonder ______2______ they can improve their study efficiency. The answer is ______3______ they should make a reasonable study plan and stick to it. The reason why some students study hard but make little progress is ______4______ they don’t have a scientific method. It is obvious ______5______ a good study method can help us learn better. The question is ______6______ we can find a method that suits us. Teachers often tell us ______7______ we should ask for help when we meet difficulties. My hope is ______8______ all students can find their own study methods and make great progress. The key to success is ______9______ we keep learning and never stop trying. It depends on ______10______ we can insist on our study plan. Passage 3： Friendship is one of the most precious things in life. A true friend is ______1______ will stand by you when you are in trouble. Many people ask me ______2______ a good friendship should be like. My answer is ______3______ a good friendship is based on sincerity and trust. The reason why some friendships end is ______4______ people don’t care about each other. It seems ______5______ many people don’t know how to maintain friendship. The question is ______6______ we can keep our friendship forever. My advice is ______7______ we should communicate more and understand each other. The most important thing is ______8______ we treat our friends with kindness and respect. Happiness is ______9______ we have good friends to share our joys and sorrows. It depends on ______10______ we are willing to put our hearts into friendship. 专项三、作文句型升级专练 要求：用表语从句改写简单句，提升作文句式高级度，贴合高考作文高频话题。 1. He is honest. It is clear. 2. We should work hard. It is important. 3. He was ill. That’s the reason why he was late. 4. We can solve the problem in this way. It is the key. 5. He will come. It is uncertain. 6. We need to protect the environment. It is our duty. 7. She missed the bus. That’s why she was late. 8. We can improve our English by reading. It is useful. 9. He is a good teacher. It is believed. 10. We will go hiking tomorrow. It depends on the weather. 11. She won the competition. It is a surprise. 12. We can finish the work on time. It is a problem. 13. He said something at the meeting. It is meaningful. 14. We should learn from mistakes. It is necessary. 15. They will arrive here at 8 o’clock. It is not decided. 16. We make good use of time. It is the key to success. 17. He has a good command of English. It is obvious. 18. We help each other. It is important for friendship. 19. She will take charge of the project. It is undecided. 20. We eat a balanced diet. It is good for our health. 第 1 页 共 17 页 学科网（北京）股份有限公司 $ 高中英语表语从句考点解读和专练精讲(解析版) 表语从句考点解读 一、基本概念 表语从句：在复合句中充当表语的从句，相当于一个名词，用来补充说明主语的身份、性质、状态、内容、结果或情况，位于系动词（be动词、感官动词、变化类动词等）之后，是句子的核心补充成分。 核心特点： 1. 从句不能单独成句，必须依附于主句，充当主句中系动词的表语，补充说明主语； 2. 从句由引导词引导，引导词不充当主句成分，只连接主句（主语+系动词）和表语从句，部分引导词在从句中充当一定成分； 3. 表语从句的位置固定：主语 + 系动词 + 表语从句（核心结构，无其他呈现形式）； 4. 表语从句作表语时，主句主语为单数，系动词用单数；主语为复数，系动词用复数（遵循主谓一致）。 核心组成：主语 + 系动词 + 引导词 + 表语从句 常见系动词（表语从句必备，高考高频）： 1. be动词：am, is, are, was, were（最常用，后接表语从句表身份、性质、状态）； 2. 感官系动词：look（看起来）、sound（听起来）、smell（闻起来）、taste（尝起来）、feel（摸起来）； 3. 变化类系动词：become（变得）、get（变得）、turn（变得）、grow（变得）、go（变得，多表负面变化）； 4. 其他系动词：seem（似乎）、appear（似乎）、prove（证明是）、remain（保持）、stay（保持）。 引导词分类（高考核心，分3大类，与主语从句引导词一致，用法有差异）： 1. 连接词（不充当从句成分，只起连接作用）：that（无含义）、whether（是否，表选择）； 2. 连接代词（在从句中充当主语、宾语、表语、定语）：what（……的事情/东西）、who（谁，指人）、whom（谁，指人，作宾语）、whose（……的，表所属）、which（哪一个，表选择）、whoever（无论谁）、whatever（无论什么）、whichever（无论哪一个）； 3. 连接副词（在从句中充当状语）：when（什么时候）、where（在哪里）、why（为什么）、how（如何，怎样）、whenever（无论何时）、wherever（无论何地）、however（无论怎样）。 二、核心考点：引导词的用法（高考重中之重） （一）连接词的用法（that vs whether） 1. that 核心功能：无实际含义，只起连接作用，不充当从句任何成分；引导的表语从句语义完整，无需补充信息。 关键注意点： 大多数情况下可省略（区别于主语从句：主语从句句首that不可省略，表语从句that可省）； 当主句主语为reason（原因）时，表语从句引导词只能用that（易错点：不可用because），构成句式“The reason is that...”。 例句： My hope is (that) he will pass the exam.（表语从句语义完整，that可省略） The reason why he was late is that he missed the bus.（主句主语为reason，表语从句用that，不可用because） Her dream is (that) she can become a doctor in the future.（that无含义，不充当成分，可省略） 2. whether 核心功能：有实际含义“是否”，起连接作用，不充当从句成分；引导的表语从句语义不完整，存在“是/否”的选择。 关键注意点： 可与or not连用（whether...or not），or not可放在whether之后或从句末尾； 不可与if互换（易错点：if不能引导表语从句，无论位置如何，表语从句表“是否”只能用whether）； 常见搭配：be sure whether...、be uncertain whether...、depend on whether...。 例句： The question is whether he will attend the meeting.（表语从句表“是否”，用whether，不可用if） I am not sure whether he will come or not.（与or not连用，用whether） Our success depends on whether we can work together.（依赖于“是否能合作”，用whether） （二）连接代词的用法（核心：充当从句成分） 核心功能：既起连接作用，又在表语从句中充当主语、宾语、表语或定语，需根据从句成分和句意选择（用法与主语从句基本一致，位置不同）。 1. what（高频考点） 含义：“……的事情”“……的东西”“……的内容”，在从句中常作主语、宾语、表语，指代事物。 例句： What he said is what surprised us most.（前一个what作主语从句宾语，后一个what作表语从句主语） My biggest wish is what I can spend more time with my family.（what在表语从句中作宾语，指代“能多陪家人”这件事） This is what we need to do first.（what在表语从句中作宾语，指代“我们首先需要做的事情”） 2. who/whom 含义：who“谁”（指人），在从句中作主语；whom“谁”（指人），在从句中作宾语（口语中可被who替代）。 例句： The person in the photo is who helped me yesterday.（who在表语从句中作主语） I don’t know who he is talking to.（who替代whom，在表语从句中作宾语） The man you saw just now is whom we are looking for.（whom在表语从句中作宾语，正式用法） 3. whose 含义：“……的”，表所属关系，在从句中作定语，后接名词，可指代人或物。 例句： The book on the desk is whose it is.（whose在表语从句中作定语，修饰it，表“谁的”） I wonder whose pen this is.（whose在表语从句中作定语，修饰pen，指代“谁的笔”） The house over there is whose family lives nearby.（whose指代人，修饰family，表所属） 4. which 含义：“哪一个”，表选择，在从句中作主语、宾语、定语，指代人或物（有明确的选择范围）。 例句： The problem is which team we should support.（which在表语从句中作定语，修饰team，有选择范围） I can’t decide which one is better.（which在表语从句中作主语，表“哪一个更好”） The question is which book we should read first.（which在表语从句中作宾语，有明确选择范围） 5. 复合连接代词（whoever/whatever/whichever） 含义：“无论谁”“无论什么”“无论哪一个”，表让步，在从句中作主语、宾语、定语，语气比普通连接代词更强。 例句： My advice is whoever breaks the rules should be punished.（whoever在表语从句中作主语，表“无论谁”） Happiness is whatever you do with a positive attitude.（whatever在表语从句中作宾语，表“无论做什么”） The choice is whichever way you think is right.（whichever在表语从句中作定语，修饰way，表“无论哪条路”） （三）连接副词的用法（核心：充当从句状语） 核心功能：既起连接作用，又在表语从句中充当时间、地点、原因、方式状语，需根据从句语义和成分选择（用法与主语从句基本一致，位置不同）。 1. when/where/why 含义：when“什么时候”（时间状语）、where“在哪里”（地点状语）、why“为什么”（原因状语）。 例句： The problem is when we will start the trip.（when在表语从句中作时间状语） This is where we held the party last year.（where在表语从句中作地点状语） The reason why she cried is why she was misunderstood.（why在表语从句中作原因状语） 2. how 含义：“如何，怎样”，在从句中作方式状语，也可表示“多么”（修饰形容词/副词，表程度）。 例句： The key is how we can solve this problem quickly.（how在表语从句中作方式状语） I don’t know how fast he can run.（how修饰fast，表程度，“多么快”） The question is how we can improve our English in a short time.（how作方式状语，表“如何提升”） 3. 复合连接副词（whenever/wherever/however） 含义：“无论何时”“无论何地”“无论怎样”，表让步，在从句中作状语。 例句： My promise is whenever you need help, I will be there.（whenever在表语从句中作时间状语） Home is wherever we feel warm and safe.（wherever在表语从句中作地点状语） The result depends on however hard we try.（however修饰hard，在表语从句中作方式状语） 三、必考点：引导词的辨析与选择（高考核心，规避易错点） （一）that vs whether（高频辨析） 看从句语义：语义完整（无“是否”含义）→ 用that；语义不完整（有“是否”选择）→ 用whether； 看主句主语：主句主语为reason时，表语从句只能用that，不可用because（易错点）； 特殊注意：表语从句中that可省略，whether不可省略，且不可用if替代。 例句对比： His decision is that he will study abroad.（语义完整，用that，可省略） His decision is whether he will study abroad.（语义不完整，表“是否”，用whether） The reason is that he is ill.（正确：主句主语为reason，用that） The reason is because he is ill.（错误：不可用because，需改为that） （二）what vs that（高频易错点） that：无含义，不充当从句成分，只起连接作用，从句语义完整； what：有含义（“……的事情/东西”），在从句中充当主语、宾语、表语，从句语义不完整（缺成分）。 例句对比（易错警示）： My wish is that he said at the meeting.（错误：从句缺宾语，that不能充当宾语） My wish is what he said at the meeting.（正确：what在从句中作宾语，指代“他说的话”） My wish is that he will come soon.（正确：从句“he will come soon”语义完整，that只起连接作用） （三）whether vs if（表语从句中） 表语从句中，只能用whether，不能用if（核心易错点，区别于主语从句“it作形式主语时可换if”），三种常见场景均需用whether： 1. 表语从句表“是否”，无论位置如何，均用whether； 2. 表语从句后接or not时，只能用whether； 3. 表语从句位于介词后（作介词宾语，本质还是表语从句），只能用whether。 例句对比： The question is whether he will come or not.（正确：表语从句+or not，用whether） The question is if he will come or not.（错误：表语从句不能用if） It depends on whether he will agree.（正确：表语从句位于介词on后，用whether） （四）连接代词 vs 连接副词 判断口诀：从句缺主语、宾语、表语、定语 → 用连接代词；从句缺时间、地点、原因、方式状语 → 用连接副词（与主语从句完全一致）。 例句对比： The problem is how we will get there.（从句“we will get there”缺方式状语 → 用how，连接副词） The problem is what we will take there.（从句“we will take there”缺宾语 → 用what，连接代词） The question is when we will get there.（从句缺时间状语 → 用when，连接副词） 四、高考高频固定搭配与易错点 （一）高频固定搭配（表语从句常用结构，高考必背） 1. The reason is that...（最高频，“……的原因是……”，不可用because）； 2. It seems/appears that...（“似乎……”，表语从句位于系动词后）； 3. be sure/certain whether...（“确定/不确定是否……”，表语从句用whether）； 4. depend on whether/what/how...（“取决于是否/什么/如何……”，表语从句作介词宾语）； 5. be + 形容词（clear, obvious, important等）+ that从句（表语从句语义完整）。 例句： The reason why he failed is that he didn’t study hard.（高频考点，reason后用that） It seems that he is very tired.（系动词seem后接表语从句） I am certain whether he will keep his promise.（be certain后接whether引导的表语从句） Our success depends on how we cooperate with each other.（depend on后接表语从句） （二）易错点总结（必考规避，高频丢分点） 1. 主句主语为reason时，表语从句引导词只能用that，不可用because（高频易错）； 2. 表语从句中，whether不可用if替代，无论是否接or not、无论是否位于介词后； 3. that引导表语从句时，大多数情况下可省略，但当表语从句较长、较复杂，或为了强调时，that不可省略； 4. what和that的区别：what充当从句成分，that不充当成分，从句缺成分用what，不缺成分用that； 5. 复合连接代词/副词（whoever/whatever等）表“无论……”，不可与no matter who/no matter what混淆（no matter...结构不能引导表语从句）； 6. 连接代词whose后必须接名词，不能单独使用（如：whose is this 错误，应为whose book is this）。 五、做题万能三步法 1. 判断是否为表语从句：看从句是否位于系动词之后，是否补充说明主语的身份、状态、内容等； 2. 分析表语从句成分：看从句中缺少什么成分（主语、宾语、表语、定语 → 连接代词；状语 → 连接副词；不缺成分 → 连接词that/whether）； 3. 结合句意选择引导词：根据从句语义（是否表“是否”、是否表“无论……”、是否有选择范围），匹配对应的引导词，同时规避易错点（如reason后用that、不用if等）。 表语从句专练精讲 专项一：单句语法填空 解题提示：每题聚焦1个核心考点，重点考查引导词的选择、引导词辨析及易错点规避，贴合高考语法填空题型。 1. My dream is ______ I can become a scientist in the future. 2. The reason why she didn’t come is ______ she was ill. 3. The question is ______ he will attend the meeting or not. 4. This is ______ we held the party last year. 5. His biggest worry is ______ he can pass the exam. 6. The key is ______ we can solve this problem quickly. 7. I don’t know ______ he is talking about. 8. The problem is ______ team will win the game. 9. Happiness is ______ you do with a positive attitude. 10. The reason for his success is ______ he works hard every day. 11. This is ______ book I borrowed yesterday. 12. The question is ______ we will start our trip. 13. I am not sure ______ he will keep his promise. 14. Our success depends on ______ we can work together. 15. The man in the photo is ______ helped me yesterday. 16. It seems ______ he is very angry. 17. The problem is ______ hard he tries, he can’t finish the work on time. 18. This is ______ I want to say to you. 19. The reason why he was late is ______ he missed the bus. 20. I wonder ______ pen this is. 21. The choice is ______ way you think is right. 22. The question is ______ we can get there on time. 23. It appears ______ he has made great progress. 24. My advice is ______ we should learn from mistakes. 25. The problem is ______ he will help us. 26. This is ______ we can find the best solution. 27. I am certain ______ he will come soon. 28. The reason for his failure is ______ he didn’t listen to others’ advice. 29. The question is ______ we should choose this plan or that one. 30. Home is ______ we feel warm and safe. 参考答案与详细解析 1. that 解析：考查连接词。表语从句“ I can become a scientist in the future”语义完整，无实际含义，用that，可省略，故填that。 2. that 解析：考查连接词。主句主语为reason，表语从句引导词只能用that，不可用because，故填that。 3. whether 解析：考查连接词。表语从句表“是否”，且后接or not，只能用whether，不可用if，故填whether。 4. where 解析：考查连接副词。表语从句中缺少地点状语，表“我们去年举行派对的地方”，用where，故填where。 5. whether 解析：考查连接词。表语从句表“他是否能通过考试”，语义不完整，用whether，不可用if，故填whether。 6. how 解析：考查连接副词。表语从句中缺少方式状语，表“我们如何快速解决这个问题”，用how，故填how。 7. what 解析：考查连接代词。表语从句中缺少宾语，指代“他在谈论的事情”，用what，故填what。 8. which 解析：考查连接代词。表语从句中缺少定语，表“哪一支队伍”，有明确选择范围，用which，故填which。 9. whatever 解析：考查复合连接代词。表“无论你做什么”，whatever在表语从句中作宾语，表让步，故填whatever。 10. that 解析：考查连接词。主句主语为reason，表语从句用that，不可用because，故填that。 11. which 解析：考查连接代词。表语从句中缺少定语，表“我昨天借的那本书”，有明确选择范围，用which，故填which。 12. when 解析：考查连接副词。表语从句中缺少时间状语，表“我们什么时候开始旅行”，用when，故填when。 13. whether 解析：考查连接词。表语从句表“他是否会遵守承诺”，用whether，不可用if，故填whether。 14. whether 解析：考查连接词。表语从句位于介词on后，表“是否能合作”，用whether，不可用if，故填whether。 15. who 解析：考查连接代词。表语从句中缺少主语，指代“帮助我的人”，指人，用who，故填who。 16. that 解析：考查连接词。固定句式It seems that...，表语从句语义完整，用that，可省略，故填that。 17. however 解析：考查复合连接副词。表“无论他多么努力”，however修饰hard，在表语从句中作方式状语，表让步，故填however。 18. what 解析：考查连接代词。表语从句中缺少宾语，指代“我想对你说的话”，用what，故填what。 19. that 解析：考查连接词。主句主语为reason，表语从句用that，不可用because，故填that。 20. whose 解析：考查连接代词。表语从句中缺少定语，表“这是谁的笔”，whose后接名词pen，表所属，故填whose。 21. whichever 解析：考查复合连接代词。表“无论你认为哪条路是对的”，whichever在表语从句中作定语，修饰way，表让步，故填whichever。 22. how 解析：考查连接副词。表语从句中缺少方式状语，表“我们如何按时到达那里”，用how，故填how。 23. that 解析：考查连接词。固定句式It appears that...，表语从句语义完整，用that，可省略，故填that。 24. that 解析：考查连接词。表语从句“we should learn from mistakes”语义完整，无实际含义，用that，可省略，故填that。 25. whether 解析：考查连接词。表语从句表“他是否会帮助我们”，语义不完整，用whether，不可用if，故填whether。 26. where 解析：考查连接副词。表语从句中缺少地点状语，表“我们能找到最佳解决方案的地方”，用where，故填where。 27. that 解析：考查连接词。表语从句“he will come soon”语义完整，无实际含义，用that，可省略，故填that。 28. that 解析：考查连接词。主句主语为reason，表语从句用that，不可用because，故填that。 29. whether 解析：考查连接词。表语从句表“我们应该选择这个计划还是那个计划”，表选择，用whether，不可用if，故填whether。 30. wherever 解析：考查复合连接副词。表“无论我们在哪里感到温暖和安全，哪里就是家”，wherever在表语从句中作地点状语，表让步，故填wherever。 专项二：语法填空 Passage 1： Everyone has a dream. My dream is ______1______ I can travel around the world one day. The reason why I have this dream is ______2______ I want to experience different cultures and meet different people. Many people ask me ______3______ I will realize my dream. My answer is ______4______ I will work hard to save money and improve my English. It seems ______5______ many people have similar dreams. The key is ______6______ we can stick to our dreams and never give up. Some people wonder ______7______ they can achieve their dreams quickly. My advice is ______8______ success takes time and patience. The most important thing is ______9______ we have a clear goal and keep moving forward. I believe ______10______ my dream will come true one day. Passage 2： Education is very important for everyone. The purpose of education is ______1______ we can become better people and make contributions to society. Many students wonder ______2______ they can improve their study efficiency. The answer is ______3______ they should make a reasonable study plan and stick to it. The reason why some students study hard but make little progress is ______4______ they don’t have a scientific method. It is obvious ______5______ a good study method can help us learn better. The question is ______6______ we can find a method that suits us. Teachers often tell us ______7______ we should ask for help when we meet difficulties. My hope is ______8______ all students can find their own study methods and make great progress. The key to success is ______9______ we keep learning and never stop trying. It depends on ______10______ we can insist on our study plan. Passage 3： Friendship is one of the most precious things in life. A true friend is ______1______ will stand by you when you are in trouble. Many people ask me ______2______ a good friendship should be like. My answer is ______3______ a good friendship is based on sincerity and trust. The reason why some friendships end is ______4______ people don’t care about each other. It seems ______5______ many people don’t know how to maintain friendship. The question is ______6______ we can keep our friendship forever. My advice is ______7______ we should communicate more and understand each other. The most important thing is ______8______ we treat our friends with kindness and respect. Happiness is ______9______ we have good friends to share our joys and sorrows. It depends on ______10______ we are willing to put our hearts into friendship. 详细解析 Passage 1： 文章大意：本文围绕“梦想”展开，阐述了作者的梦想、实现梦想的方法，多处涉及表语从句，考查连接词、连接代词、连接副词及固定句式的用法。 1. that 解析：表语从句“ I can travel around the world one day”语义完整，无实际含义，用that，可省略。 2. that 解析：主句主语为reason，表语从句引导词只能用that，不可用because。 3. whether 解析：表语从句表“我是否能实现梦想”，语义不完整，用whether，不可用if。 4. that 解析：表语从句“ I will work hard to save money and improve my English”语义完整，用that，可省略。 5. that 解析：固定句式It seems that...，表语从句语义完整，用that，可省略。 6. whether 解析：表语从句表“我们是否能坚持梦想”，语义不完整，用whether，不可用if。 7. whether 解析：表语从句表“他们是否能快速实现梦想”，语义不完整，用whether，不可用if。 8. that 解析：表语从句“success takes time and patience”语义完整，无实际含义，用that，可省略。 9. that 解析：表语从句“we have a clear goal and keep moving forward”语义完整，用that，可省略。 10. that 解析：宾语从句（此处补充，贴合语境），语义完整，用that，可省略。 Passage 2： 文章大意：本文介绍了教育的重要性、学习方法的重要性，表语从句主要考查连接词、连接代词、连接副词及固定句式的用法。 1. that 解析：表语从句“we can become better people and make contributions to society”语义完整，用that，可省略。 2. how 解析：表语从句中缺少方式状语，表“他们如何提高学习效率”，用how。 3. that 解析：表语从句“they should make a reasonable study plan and stick to it”语义完整，用that，可省略。 4. that 解析：主句主语为reason，表语从句用that，不可用because。 5. that 解析：固定句式It is obvious that...，表语从句语义完整，用that，可省略。 6. how 解析：表语从句中缺少方式状语，表“我们如何找到适合自己的方法”，用how。 7. that 解析：宾语从句（补充），语义完整，用that，可省略。 8. that 解析：表语从句“all students can find their own study methods and make great progress”语义完整，用that，可省略。 9. that 解析：表语从句“we keep learning and never stop trying”语义完整，用that，可省略。 10. whether 解析：表语从句位于介词on后，表“我们是否能坚持学习计划”，用whether，不可用if。 Passage 3： 文章大意：本文介绍了友谊的珍贵性、良好友谊的基础及维护友谊的方法，表语从句考查连接词、连接代词、连接副词及固定句式。 1. who 解析：表语从句中缺少主语，指代“会在你困难时支持你的人”，指人，用who。 2. what 解析：表语从句中缺少宾语，指代“一段好的友谊应该是什么样子”，用what。 3. that 解析：表语从句“a good friendship is based on sincerity and trust”语义完整，用that，可省略。 4. that 解析：主句主语为reason，表语从句用that，不可用because。 5. that 解析：固定句式It seems that...，表语从句语义完整，用that，可省略。 6. how 解析：表语从句中缺少方式状语，表“我们如何能永远保持友谊”，用how。 7. that 解析：表语从句“we should communicate more and understand each other”语义完整，用that，可省略。 8. that 解析：表语从句“we treat our friends with kindness and respect”语义完整，用that，可省略。 9. that 解析：表语从句“we have good friends to share our joys and sorrows”语义完整，用that，可省略。 10. whether 解析：表语从句位于介词on后，表“我们是否愿意用心对待友谊”，用whether，不可用if。 专项三、作文句型升级专练 要求：用表语从句改写简单句，提升作文句式高级度，贴合高考作文高频话题。 1. He is honest. It is clear. 2. We should work hard. It is important. 3. He was ill. That’s the reason why he was late. 4. We can solve the problem in this way. It is the key. 5. He will come. It is uncertain. 6. We need to protect the environment. It is our duty. 7. She missed the bus. That’s why she was late. 8. We can improve our English by reading. It is useful. 9. He is a good teacher. It is believed. 10. We will go hiking tomorrow. It depends on the weather. 11. She won the competition. It is a surprise. 12. We can finish the work on time. It is a problem. 13. He said something at the meeting. It is meaningful. 14. We should learn from mistakes. It is necessary. 15. They will arrive here at 8 o’clock. It is not decided. 16. We make good use of time. It is the key to success. 17. He has a good command of English. It is obvious. 18. We help each other. It is important for friendship. 19. She will take charge of the project. It is undecided. 20. We eat a balanced diet. It is good for our health. 参考答案与详细解析 1. It is clear that he is honest. 解析：用固定句式It is clear that...，表语从句位于系动词is后，改写后句式更高级，适合作文观点陈述。 2. It is important that we should work hard. 解析：高频作文句式It is important that...，表语从句语义完整，提升作文正式度，适合建议类作文。 3. The reason why he was late is that he was ill. 解析：固定句式The reason why...is that...，主句主语为reason，表语从句用that，不可用because，是高考高频句型，适合作文原因阐述。 4. The key is how we can solve the problem in this way. 解析：用how引导表语从句（作方式状语），补充说明主语the key，句式多样，体现语法运用能力。 5. It is uncertain whether he will come. 解析：用whether引导表语从句，表“是否”，不可用if，句式规范，适合作文不确定语气的表达。 6. Our duty is that we need to protect the environment. 解析：用that引导表语从句，补充说明主语our duty，句式工整，贴合环保类作文话题。 7. The reason why she was late is that she missed the bus. 解析：固定句式The reason why...is that...，阐述迟到的原因，符合作文细节描写，规避because的使用误区。 8. What is useful is that we can improve our English by reading. 解析：用what引导主语从句，that引导表语从句，构成“主语从句+表语从句”的复合句式，复杂且高级，既体现语法综合运用能力，又能突出“阅读提升英语”这一观点，适合作文论证观点、增强说服力。 9. It is believed that he is a good teacher. 解析：固定句式It is believed that...，表语从句位于系动词is后，属于被动语态与表语从句的结合，句式正式，适合作文中对人物的评价、观点的客观陈述，提升作文书面化程度。 10. Whether we will go hiking tomorrow depends on the weather. 解析：将表语从句“whether we will go hiking tomorrow”提前作主语，whether表“是否”，不可用if，贴合“取决于天气”的语境，句式灵活，避免简单句的单调，适合作文中表达条件、取决于某因素的场景。 11. It is a surprise that she won the competition. 解析：用固定句式It is a surprise that...，表语从句补充说明主语a surprise，语义完整，语气自然，适合作文中表达意外事件、惊喜场景的细节描写，增强文章感染力。 12. The problem is whether we can finish the work on time. 解析：用whether引导表语从句，表“是否”，不可用if，补充说明主语the problem，精准体现“能否按时完成工作”这一核心问题，句式规范，适合作文中阐述困难、问题类场景。 13. What he said at the meeting is meaningful. 解析：用what引导表语从句，在从句中作宾语，指代“他在会议上说的话”，既解决了原句简单句的平淡，又突出核心内容，适合作文中引用他人观点、阐述某句话的意义的场景。 14. It is necessary that we should learn from mistakes. 解析：高频作文句型It is necessary that...，表语从句语义完整，that可省略，语气正式，适合建议类、观点类作文，强调“从错误中学习”的必要性，贴合高考作文积极向上的导向。 15. It is not decided when they will arrive here at 8 o’clock. 解析：用when引导表语从句，在从句中作时间状语，补充说明主语“it”（指代“他们八点到达”这件事），精准表达“未确定到达时间”的语境，句式严谨，适合作文中表达未确定的时间、计划类场景。 16. The key to success is that we make good use of time. 解析：用that引导表语从句，补充说明主语the key to success，句式工整，直接点出“合理利用时间是成功的关键”这一观点，适合作文中阐述成功的秘诀、提出建议的场景，贴合高考作文高频话题。 17. It is obvious that he has a good command of English. 解析：固定句式It is obvious that...，表语从句位于系动词is后，语义完整，语气肯定，适合作文中对他人能力、状态的评价，简洁有力，提升作文表达效率。 18. What is important for friendship is that we help each other. 解析：用what引导主语从句，that引导表语从句，复合句式层次清晰，既突出“互助对友谊的重要性”这一核心，又体现语法运用的灵活性，适合作文中阐述友谊、合作类话题。 19. It is undecided whether she will take charge of the project. 解析：用whether引导表语从句，表“是否”，不可用if，结合固定句式It is undecided that...，表达“未确定是否负责项目”的语境，句式规范，适合作文中表达未确定的安排、计划类场景。 20. What is good for our health is that we eat a balanced diet. 解析：用what引导主语从句，that引导表语从句，句式高级且逻辑清晰，突出“均衡饮食对健康有益”这一观点，贴合健康类作文话题，同时展现语法综合运用能力，助力作文提分。 第 1 页 共 17 页 学科网（北京）股份有限公司 $