Unit 3 Smart Learning 单元语法精讲精练（that、if 和whether 引导的宾语从句）（含解析） 2026-2027 学年人教版（新教材）九年级上册英语

**基本信息** 初中英语人教版九年级上册Unit 3同步练，聚焦that/if/whether引导的宾语从句，通过选择与填空分层设计，覆盖基础用法到综合应用，助力新授课语言能力培养与思维品质提升。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |基础层|引导词基础用法（that省略、if/whether互换）|单项选择1-10题，以情境对话考查基础判断| |进阶层|时态匹配、语序规则|单项选择11-20题，含if多义辨析与主从时态呼应| |综合层|否定转移、真理时态等难点|单项选择21-25题及填空，结合复杂语境与动词形式转换|

人教版(新教材)九年级上册Unit 3 Smart Learning 单元核心语法精讲精练 核心语法:that / if / whether 引导的宾语从句 知识点1 核心语法讲解 1. 定义: 用完整句子充当主句中动词、介词后的宾语,由 that / if / whether 连接主句与从句,用来表达观点、事实、疑问。 2. 基础公式:主句 + 引导词 + 宾语从句(从句必须用陈述语序) 示例拆分: 主句:We know 宾语从句:good study habits help us make progress 完整句:We know (that) good study habits help us make progress. 翻译:我们知道良好的学习习惯能帮助我们取得进步。 知识点2 that 引导陈述事实类宾语从句 1. 基础用法 that 无实际中文词义,仅起连接作用;在 think、know、believe、say 等动词后常可省略。 例句:We know (that) good study habits help us make progress. 翻译:我们知道良好的学习习惯能帮助我们取得进步。 2. 必考:that 不能省略 的3种固定场景 (1)并列多个宾语从句:仅第一个 that 可省,后续从句 that 必须保留 例句:I know (that) reading helps us, that writing improves our skills. 翻译:我知道阅读对我们有益,写作能提升我们的能力。 (2)it 作形式宾语(初中重难点) 固定句型:主语 + think /find/consider + it + 形容词 + that 从句 解析:it 代替后方长从句,避免句子头重脚轻,此处 that 不可省略。 例句:Some students consider it important that they review lessons every day. 翻译:有些学生认为每日复习功课十分重要。 (3)从句主语为 this /that,或被 this /that 修饰 例句:I believe that this helps us remember knowledge. 翻译:我相信这能帮我们巩固知识。 3. 课内拓展考点:否定转移(单元必考) (1) 适用条件:主句主语为 I / We,主句动词为 think / believe (2) 规则:从句否定含义必须前移至主句,从句使用肯定句式 正确:I don’t think that memorizing words is hard. 错误:I think that memorizing words isn’t hard. 译文:我认为背单词并不难。 知识点3 if、whether 表“是否”引导宾语从句 1. 基础通用规则 if、whether 词义相同,均译为“是否”,自带疑问语气,引导从句时不可省略;置于及物动词后引导宾语从句,二者可互换。 2. 中考必考:4种场景只能用whether,绝对不能用if 限定场景 语法规则 宾语从句放句首 表“是否”前置从句,仅能用whether 搭配or not whether可和or not分写/紧连;if不可紧邻or not 后接to do不定式 固定搭配whether to do,无if to do结构 置于介词后作宾语 on/about等介词后表“是否”,只能用whether 3. 重难点易混辨析:if 的两层词义区分 从句类型 if含义 是否可换whether 时态要求 宾语从句 是否 动词后可互换 可根据时间使用将来时 条件状语从句 如果 不可替换 从句只用一般现在表将来 知识点4 宾语从句统一硬性规则1:语序(全从句通用) 1. 核心黄金法则 无论主句是陈述句、一般疑问句,宾语从句一律使用陈述语序(主语在前,谓语在后,主谓不倒装)。 2. 分类示例 (1) 主句为陈述句 She thinks that he is a good student. 她觉得他是一名好学生。 从句结构:主语 he + 系动词 is(标准陈述语序) (2) 主句为一般疑问句 Do you know where he lives? 你知道他住在哪里吗? 错误句式:Do you know where does he live?(疑问倒装语序,考试扣分) 知识点5 宾语从句统一硬性规则2:时态匹配(全从句通用) 记忆口诀:主现从不限,主过从倒退,真理永一现 时态规则分类 主句时态特征 从句时态要求+细化转换规则 主现从不限 主句为一般现在时 / 含can/may/must等情态动词 本质:说话人站在现在发表看法 主句是现在类时态,从句不受约束,从句本身该用什么时态就用什么时态: 1. 将来时间 一般将来时 2. 过去时间 一般过去时 主过从必过 主句谓语动词为一般过去时(高频词:said, told, thought, asked) 本质:说话人站在过去回顾内容 主句是过去时,从句时态整体倒退一档,初中必考3组转换: 1. 一般现在时 一般过去时 2. 现在进行时 过去进行时 3. 一般将来时 过去将来时 真理永一现 从句内容是客观真理、科学常识、谚语 不受主句时态限制,永远用一般现在时,是「主过从必过」的唯一例外 考点精练 一、单项选择(共25小题) 从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。 ( )1.— The match is so exciting. The opposite team is really strong. — You’re right. But I am sure _ our team will win! A.if B.that C.whether D.why ( )2.—Do you believe _ house prices will drop in the following month? —It’s hard to say. The public are still not sure _ the government has made up its mind to do so. A.if; that B.whether; if C.that; that D.that; whether ( )3.We _ Tom _ honest boy. A.think, isn’t a B.think, isn’t an C.don’t think, is a D.don’t think, is an ( )4.—What’s wrong with your uncle? —We are sure _ something is wrong with him, but we doubt _ the disease will kill him. A.if, whether B.that, that C.whether, if D.that, whether ( )5.— It is raining these days! — Yes. I doubt _ the sports meeting can be held on time or not. A.why B.that C.whether D.if ( )6.The Chinese football team don’t know _ or not they will win the match. However, they will try their best. A.what B.whether C.when D.which ( )7.—Have you planned your National Day holiday? —No, I haven't, I'm not sure _ to visit my parents. A.that B.whether C.if D.why ( )8.It depends on _ he can solve the problem correctly. A.if B.whether C.that D.why ( )9.She is uncertain about _ she can get a good job even though she's a top student in her school. A.if B.that C.whether D./ ( )10.He hasn’t decided _ to stay in Beijing or go back home. A.if B.whether C.when D.where ( )11.I don’t know _ Jack will come and join us. _ he comes, I’ll call you. A.if; If B.if; Whether C.whether; That D.that; Whether ( )12.—Let’s go fishing if it _ fine this weekend. —But nobody knows if it _. A.is, will rain B.will be, rains C.will be, will rain D.is, rains ( )13.—People seldom doubt (怀疑) _ green can give us energy. —I agree. But nobody is sure _ it is the most suitable for him. A.whether, if B.that, whether C.that, that D.if, that ( )14.—Mike wants to know if _ a picnic tomorrow. —Yes. But if it _, we will do something else instead. A.you have; will rain B.you will have; will rain C.you will have; rains D.will you have; rains ( )15.I don’t care _ you said to me. I won’t listen to you anyway. A.that it was what B.what it was what C.that it was that D.what it was that ( )16.—I've prepared a surprise party for Lucy.But I'm not sure_. —Of course she will.She likes parties. A.what she will like B.what will she like C.whether she will like it D.whether will she like it ( )17.She said she _ that my parents worked long hours every day. A.know B.knowing C.knows D.knew ( )18.Paul said that _ a new computer last Friday. A.he will buy B.he bought C.will he buy D.did he buy ( )19.Andy asked whether _ after he finished his task. A.can he go to the cinema B.he can go to the cinema C.he could go to the cinema D.could he go to the cinema ( )20.Peter asked me if _ to Beijing to watch the game by plane. A.could we go B.we could go C.can we go D.we can go ( )21.Just now my mom asked me if I _ shopping with her. If I _ need to work, I will go with her tomorrow. A.go; won’t B.will go; won’t C.would go; don’t D.would go; will ( )22.The boy _ his hand and asked if the sun _ in the east every day. A.rose, rises B.raised, raised C.raised, rises D.rises, raised ( )23.He said that light _ much faster than sound. A.travelled B.have travelled C.travels D.will travel ( )24.—What did the geography teacher say, Jim? —He told us that the earth _ around once every 24 hours, which makes a day. A.is turning B.turned C.turns D.will turn ( )25.I _ believe their son _ come to visit me. A.don’t;will B./;doesn’t C.didn’t;will D./;didn’t 二、用所给单词的适当形式填空(共20小题) 1.I asked Ms Jones whether she _ (have) any other good ideas. 2.The boy asked whether we _ (can) predict an earthquake exactly. 3.He asked me if I _ (know) the new teacher’s name. 4.Andy said he _ (give) me two days off if I could complete this project in time. 5.I don’t know if he _ (come) to the party tomorrow. 6.When I was young, my grandpa told me that the earth _ (move) around the sun. 7.My grandpa told me that practice _ (make) perfect. 8.My teacher always says that English _ (be) a helpful subject. 9.Nancy is not sure whether she _ (shut) all the windows just now. 10.The boy asks whether there _ (be) little clean water for people to drink in the future. 11.Do you know if he _ (see) the film before? 12.The Physics teacher told us that water _ (change) into ice at the temperature of 0 . 13.The teacher told us that the moon _ light itself. (not give) 14.My mother promised that she _ (buy) me a new phone as my birthday gift. 15.The director said that the film _ (basic) on the things of everyday life. 16.He _ that he would help me whenever I was in trouble. (promise) 17.He asked me if I _ (go) fishing that afternoon. 18.I didn’t think that these posters _ (stick) together just a moment. 19.Are you sure that the Smiths _ (take) a trip to Hong Kong next month? 20.It is said that a girl named Jones _ (kill) in the accident. 第 1 页 共 4 页 学科网(北京)股份有限公司 $ 答案解析 一、单项选择（25道） 1. 答案：B。解析：主句I am sure后接陈述事实的宾语从句，引导词用that，无实义可省略；if/whether表“是否”，why表原因，均不符合“确信我们队会赢”的肯定陈述语境。 2. 答案：D。解析：第一空believe后接完整陈述句，用that；第二空not sure表不确定，意为“不确定政府是否下定决心”，用whether/if，只有D匹配结构。 3. 答案：D。解析：主句主语we+动词think，遵循否定转移，否定词放主句don’t think；honest元音音素开头，用an，故选don’t think, is an。 4. 答案：D。解析：第一空sure后接肯定事实从句，用that；第二空doubt怀疑，表“怀疑疾病是否会夺走他生命”，用whether/if。 5. 答案：C。解析：固定搭配whether…or not，if不能直接紧跟or not，why/that无“是否”含义，只能选whether。 6. 答案：B。解析：后文出现or not，只能用whether构成whether…or not，what/when/which语义不匹配“是否能赢比赛”。 7. 答案：B。解析：空格后接to do不定式，固定结构whether to do，不存在if to do搭配，that/why语义不符。 8. 答案：B。解析：空前是介词on，介词后表“是否”只能用whether，if不能放在介词后，that/why语义错误。 9. 答案：C。解析：空前介词about，介词后表是否只用whether；if不可置于介词后，that无“是否”含义，从句引导词不能省略。 10. 答案：B。解析：后接to do不定式to stay，只能用whether构成whether to do，if无此用法，when/where疑问词语义不通。 11. 答案：A。解析：第一空know后宾语从句，if/whether均可表“是否杰克会来”；第二空置于句首引导条件状语从句，if译为“如果”，whether不能引导条件状语从句。 12. 答案：A。解析：第一句if引导条件状语从句，遵循“主将从现”，用is；第二句know后宾语从句，this weekend为将来时间，用will rain。 13. 答案：B。解析：seldom doubt几乎不怀疑，后接确定事实用that；第二空not sure不确定，表“是否适合他”用whether/if。 14. 答案：C。解析：第一空know后宾语从句tomorrow表将来，陈述语序you will have；第二空if引导条件状语从句，主将从现，用rains。 15. 答案：D。解析：宾语从句内含强调句型it was…that；care后缺宾语，用what作said的宾语，结构为I don’t care what it was that you said。 16. 答案：C。解析：后文答句she will，说明从句含义“她是否会喜欢派对”，用whether；宾语从句必须陈述语序，排除B、D；what语义不符。 17. 答案：D。解析：主句said为一般过去时，遵循“主过从倒退”，从句一般现在时know倒退为一般过去时knew。 18. 答案：B。解析：主句said过去时，last Friday过去时间，从句用一般过去时；宾语从句陈述语序，排除倒装C、D，will buy为将来时不符合时态倒退规则。 19. 答案：C。解析：主句asked过去时，can倒退为could；宾语从句陈述语序（主语he在前），排除A、D倒装，B时态未倒退。 20. 答案：B。解析：主句asked过去时，can变could；陈述语序we could go，排除A、C倒装，Dcan未变过去式。 21. 答案：C。解析：第一空主句asked过去时，will go倒退为would go；第二空if引导条件状语从句，主将从现，主语I，用don’t。 22. 答案：C。解析：第一空举手为及物动词raise，过去式raised；第二空从句是客观真理“太阳东升”，不受主句过去时态影响，用一般现在时rises。rise不及物，不能接hand。 23. 答案：C。解析：“光比声音传播快”是客观真理，主句said为过去时，从句仍用一般现在时travels。 24. 答案：C。解析：“地球24小时自转一圈”属于地理客观真理，主句told过去时，从句不变，用一般现在时turns。 25. 答案：A。解析：主语I+believe，否定转移，否定词放主句don’t；从句表将来动作用will。 二、用所给单词的适当形式填空（20道） 1. 答案：had。解析：主句asked一般过去时，主过从倒退，have变为过去式had。 2. 答案：could。解析：主句asked过去时，情态动词can倒退为过去式could。 3. 答案：knew。解析：主句asked过去时，know改为一般过去时knew。 4. 答案：would give。解析：主句said为过去时，if引导将来含义，will give倒退为过去将来时would give。 5. 答案：will come。解析：主句don’t know一般现在时（主现从不限），tomorrow将来时间，用一般将来时will come。 6. 答案：moves。解析：“地球绕太阳转”客观真理，主句was young过去时，从句永久一般现在时，主语earth三单moves。 7. 答案：makes。解析：Practice makes perfect熟能生巧，固定谚语，永远一般现在时，practice单数用makes。 8. 答案：is。解析：主句says一般现在时，从句陈述客观事实，English单数系动词用is。 9. 答案：shut。解析：主句is not sure现在时，just now刚刚为过去时间，shut过去式同原形shut。 10. 答案：will be。解析：in the future将来时间，主句asks现在时，从句用一般将来时will be。 11. 答案：has seen。解析：before是现在完成时标志，主句do you know现在时，从句用现在完成时has seen。 12. 答案：changes。解析：0℃水结冰是客观科学常识，主句told过去时，从句用一般现在时，water三单changes。 13. 答案：doesn’t give。解析：“月亮自身不发光”客观真理，一般现在时否定；moon单数，助动词does+not，动词原形give。 14. 答案：would buy。解析：主句promised过去时，承诺的动作是将来，will buy倒退为过去将来时would buy。 15. 答案：is based。解析：film和base是被动关系（电影基于日常故事），客观陈述用一般现在时被动；basic形容词变形为动词base，被动be based on。 16. 答案：promised。解析：后文宾语从句he would help为过去将来时，主句时态对应一般过去时promised。 17. 答案：would go。解析：主句asked过去时，that afternoon为当天将来动作，will go倒退为would go。 18. 答案：were stuck。解析：主句didn’t think过去时，posters复数，posters和stick粘贴是被动关系，一般过去时被动were stuck。 19. 答案：will take。解析：主句Are you sure现在时，next month下月将来，从句用一般将来时will take。 20. 答案：was killed。解析：事故中女孩遇害，发生在过去；girl单数，人与kill被动，一般过去时被动was killed。 学科网（北京）股份有限公司 $