Unit 5 Looking into nature 宾语从句专项提优练习-2025-2026学年外研版八年级下册英语

**基本信息** 以“概念-规则-应用”为逻辑链，系统构建宾语从句方法体系，通过分层训练提升语言应用能力与逻辑思维。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |定义与结构|2例|用完整句子作宾语的从句，主句为主谓宾结构|从基础概念切入，通过例句具象化“从句作宾语”本质| |that引导|2例|无词义连接词，陈述句用，口语可省，搭配think等动词|由连接词功能延伸至使用场景，建立“引导词-句式”对应关系| |否定前移|2例|第一人称+think等动词时，从句否定移至主句|针对特殊语法现象，明确适用条件与转换规则| |if/whether引导|2例+5种区分情况|表“是否”，5种情况只用whether（介词后等）|对比辨析易混点，构建“通用-特殊”使用框架| |综合练习|50题|通过填空、单选、句型转换强化引导词选择与否定前移|覆盖中考高频题型，实现理论到解题能力的迁移|

外研版八年级下册英语（新教材）Unit 5 Looking into nature 宾语从句专项提优练习 一、什么是宾语从句 定义: 在主句中充当宾语的从句，就叫宾语从句。 简单理解：用一个完整句子，来作另一个句子的宾语。 主句结构：主语 + 谓语动词 + 宾语（从句） 1. I know you are right. 我知道你是对的。画线部分是宾语从句 2. She says she likes English. 她说她喜欢英语。画线部分是宾语从句 二、由that引导的宾语从句 1. that 含义：无实际词义，只起连接作用。 2. 用法：从句是陈述句时，用that引导。 3. 省略规则：口语/日常句中that常省略；正式书面语、从句较长时一般不省。 He thinks (that) it is easy. 他认为这很简单。（that可省） I believe (that) she will come. 我相信她会来。 常见搭配动词：think, believe, say, know, hope, find 等。 三、宾语从句的否定前移 规则:主句主语为第一人称(I/we)，谓语动词是 think, believe, suppose, expect 时： 从句的否定，要移到主句上（否定前移），从句用肯定形式。 正确例句 1. 我认为他不对。 ❌ I think he isn't right. ✅ I don't think he is right. 2. 我们相信她不会迟到。 ✅ We don't believe she will be late. 注意 主句主语不是I/we，不用否定前移： He thinks I am not wrong.（正确） 四、if / whether 引导宾语从句（表“是否”） 从句是一般疑问句，改为宾语从句时，用 if / whether 引导，语序变回陈述语序。 含义：是否，二者大部分情况可互换。 1. Do you know if/whether he is at home? 你知道他是否在家吗？ 2. I wonder if/whether she likes music. 我想知道她是否喜欢音乐。 if 和 whether 必须区分的5种情况（只用whether，不用if） 1. 从句前面有介词时 I'm thinking whether we can go.（介词后只用whether） 2. 与 or not 连用（尤其or not紧跟其后） I don't know whether he will come or not. 3. 放在不定式 to do 前 She doesn't know whether to leave. 4. 引导主语从句、表语从句（不在宾语从句范畴，了解即可） 5. 正式书面文体，优先用 whether 宾语从句专项练习 一、用that/ whether/if 填空。 1. I know ______ he is a good student. 2. She doesn’t know ______ her mother will come back or not. 3. We believe ______ they will win the game. 4. Could you tell me ______ the train leaves at 8:00? 5. I wonder ______ he can pass the exam. 6. He says ______ he will help us with our English. 7. I’m thinking about ______ we should go there by bus. 8. She hasn’t decided ______ to take part in the party. 9. Do you know ______ the meeting will start on time? 10. We all know ______ the sun rises in the east. 11. He doesn’t know ______ his father will buy him a new bike. 12. I hope ______ you can have a good time here. 13. The teacher asked ______ we had finished our homework. 14. She is worried about ______ she can finish the work on time. 15. I don’t care ______ you like me or not. 二、单项选择题。 ( )1. I believe ______ he will come to the party tomorrow. A. that B. if C. whether D. what ( )2. She doesn’t know ______ her brother will come back or not. A. if B. whether C. that D. when ( )3. I ______ think he ______ right. A. don’t; is B. do; isn’t C. don’t; isn’t D. do; is ( )4. We wonder ______ we should wait for him here. A. that B. whether C. what D. how ( )5. He says ______ he will visit his grandparents this weekend. A. / B. if C. whether D. why ( )6. I’m thinking about ______ we can go to the park this afternoon. A. if B. whether C. that D. how ( )7. I don’t expect they ______ finish the difficult work today. A. won’t B. don’t C. will D. can’t ( )8. Could you tell me ______ the library opens every day? A. that B. if C. whether D. both B and C ( )9. She hasn’t decided ______ to go to Shanghai with her friends. A. if B. whether C. that D. what ( )10. We all know ______ the earth goes around the sun. A. whether B. if C. that D. / ( )11. The teacher told us ______ light travels faster than sound. A. if B. whether C. that D. what ( )12. I don’t know ______ he will come to the meeting or not. A. if B. whether C. that D. when ( )13. He ______ think I ______ wrong. A. doesn’t; am B. does; am not C. doesn’t; am not D. does; am ( )14. She asked me ______ I had seen her keys anywhere. A. that B. whether C. what D. where ( )15. We hope ______ you can join us in the game. A. that B. if C. whether D. when ( )16. I’m not sure ______ he will be free this Sunday. A. that B. whether C. what D. which ( )17. He thinks ______ it is easy to learn English well. A. that B. if C. whether D. what ( )18. They are talking about ______ they will hold a sports meeting next week. A. if B. whether C. that D. what ( )19. She doesn’t know ______ to say at the meeting. A. if B. whether C. what D. how ( )20. I believe ______ you will make great progress if you work hard. A. that B. if C. whether D. when 三、把下面句子改成宾语从句。 1. He is honest. I think. → I think ______ ______ ______ honest. 2. She will come to the party. I believe. → I believe ______ ______ ______ come to the party. 3. Will they go to the zoo? We wonder. → We wonder ______ ______ ______ go to the zoo. 4. Is he at home? Could you tell me? → Could you tell me ______ ______ ______ at home? 5. The sun is bigger than the moon. The teacher told us. → The teacher told us ______ the sun ______ bigger than the moon. 6. He won’t pass the exam. I think.（改为否定前移） → I ______ ______ he ______ pass the exam. 7. Will she accept the gift? I don’t know. → I don’t know ______ ______ ______ accept the gift. 8. They are having a meeting. He says. → He says ______ ______ ______ having a meeting. 9. Can he finish the work on time? We are not sure. → We are not sure ______ ______ ______ finish the work on time. 10. She will not be late. We suppose.（改为否定前移） → We ______ ______ she ______ be late. 11. Does he like playing basketball? I want to know. → I want to know ______ ______ ______ playing basketball. 12. The earth goes around the sun. Everyone knows. → Everyone knows ______ the earth ______ around the sun. 13. Should we go by train? They are talking about. → They are talking about ______ ______ ______ go by train. 14. He will not join us. I expect.（改为否定前移） → I ______ ______ he ______ join us. 15. Is there a bank near here? Can you tell me? → Can you tell me ______ ______ ______ a bank near here? 学科网（北京）股份有限公司 $ 一、用that/whether/if填空（15小题）答案与解析 1. that 解析：从句为陈述句，用that引导，that无实义，仅起连接作用。 2. whether 解析：后有or not，固定搭配whether...or not，只能用whether。 3. that 解析：从句为陈述句，用that引导。 4. if/whether 解析：表“是否”，动词后无特殊限制，if和whether可互换。 5. if/whether 解析：wonder（想知道）后接表疑问的从句，用if/whether。 6. that 解析：从句为陈述句，that可省略。 7. whether 解析：介词about后只能用whether，不能用if。 8. whether 解析：不定式to do前，只能用whether，构成whether to do结构。 9. if/whether 解析：表“是否”，无特殊限制，if和whether通用。 10. that 解析：从句为客观真理（太阳东升），用that引导。 11. if/whether 解析：表“是否”，动词后通用if/whether。 12. that 解析：hope后接陈述句从句，用that引导。 13. if/whether 解析：ask后接表疑问的从句，用if/whether。 14. whether 解析：介词about后只能用whether。 15. whether 解析：后有or not，只能用whether。 二、单项选择题（20小题）答案与解析 1. A. that 解析：从句为陈述句，用that引导。 2. B. whether 解析：后有or not，只能用whether。 3. A. don’t; is 解析：主句主语I+think，从句否定前移，主句否定、从句肯定。 4. B. whether 解析：wonder后表“是否”，用whether。 5. A. / 解析：陈述句从句，that可省略。 6. B. whether 解析：介词about后只能用whether。 7. C. will 解析：expect+第一人称，否定前移，主句已否定，从句用肯定。 8. D. both B and C 解析：无特殊限制，if和whether均可表“是否”。 9. B. whether 解析：不定式to do前，只能用whether。 10. C. that 解析：客观真理，用that引导。 11. C. that 解析：客观真理（光比声快），用that引导。 12. B. whether 解析：后有or not，只能用whether。 13. A. doesn’t; am 解析：主句主语非I/we，不用否定前移，从句直接否定。 14. B. whether 解析：ask后表“是否”，用whether。 15. A. that 解析：hope后陈述句从句，用that引导。 16. B. whether 解析：not sure后表“是否”，用whether。 17. A. that 解析：think后陈述句从句，用that引导。 18. B. whether 解析：介词about后只能用whether。 19. C. what 解析：say后缺宾语，用what（什么）引导，非if/whether。 20. A. that 解析：陈述句从句，用that引导。 三、把下面句子改成宾语从句（15小题）答案与解析 1. that he is 解析：陈述句变宾语从句，用that引导，语序不变。 2. that she will 解析：陈述句变宾语从句，that引导，时态不变。 3. if/whether they will 解析：一般疑问句变宾语从句，用if/whether，陈述语序，保留将来时。 4. if/whether he is 解析：一般疑问句变宾语从句，if/whether引导，陈述语序。 5. that; is 解析：客观真理，that引导，从句时态不变（一般现在时）。 6. don’t think; will 解析：I+think，否定前移，主句否定，从句肯定。 7. if/whether she will 解析：一般疑问句变宾语从句，if/whether引导，陈述语序。 8. that they are 解析：陈述句变宾语从句，that引导，时态不变（现在进行时）。 9. if/whether he can 解析：一般疑问句变宾语从句，if/whether引导，情态动词不变。 10. don’t suppose; will 解析：We+suppose，否定前移，主句否定，从句肯定。 11. if/whether he likes 解析：一般疑问句变宾语从句，if/whether引导，主语三单，谓语likes。 12. that; goes 解析：客观真理，that引导，从句一般现在时，主语三单，谓语goes。 13. whether we should 解析：介词about后，只能用whether，陈述语序。 14. don’t expect; will 解析：I+expect，否定前移，主句否定，从句肯定。 15. if/whether there is 解析：一般疑问句变宾语从句，if/whether引导，there be句型陈述语序。 学科网（北京）股份有限公司 $