Unit 3 单元语法：that 和 if、whether引导的宾语从句（精讲课件）2026-2027学年九年级英语上册单元核心知识精讲精练（新教材人教版）

该初中英语课件聚焦九年级Unit 3 Smart Learning语法专项，系统梳理that和if/whether引导的宾语从句，通过定义解析、规则归纳、对比表格及记忆口诀，串联引导词选用、陈述语序、时态呼应等核心要点，构建完整知识网络。 其亮点在于采用“基础巩固-综合应用-情境拓展”分层练习设计，如完形填空融入华罗庚自学故事，留言板任务结合太阳系行星争议，培养学生语言运用能力与逻辑分析思维，助力教师精准把握学情，提升复习效率。

新人教版/英语/九年级 语 法 专 项 Unit 3 Smart Learning 人教版新教材 语法点 Unit 1 The Changing World 一般过去时与现在完成时的区别 used to 的用法 Unit 2 Inspiring People It is/was + adj. (+ for/of sb) + to do sth. It is/was … that 从句 Unit 3 Smart Learning that 和 if/whether 引导的宾语从句 Unit 4 Our Memory 特殊疑问词引导的宾语从句 Unit 5 Power of Ideas 一般现在时和一般过去时的被动语态 Unit 6 Beyond Earth 一般将来时的被动语态 Unit 7 Feel the Rhythm 关系从句 Unit 8 More Than a Game 主谓一致 2 CONTENT 目录 that 和 if/whether 引导的宾语从句 1 2 3 课后练习 拓展练习 01 that 和 if/whether 引导的宾语从句 that 和 if/whether 引导的宾语从句 宾语从句是用一个完整句子，充当主句动词 / 介词的宾语，放在主句后面，构成 “主句 + 引导词 + 宾语从句” 复合句。宾语从句一律使用陈述句语序（主语在前，谓语在后），不能用疑问语序。三大必考维度引导词、语序、时态。本单元重点为that 和 if/whether 引导的宾语从句。 I think (that) Zhang Qian is a great pioneer. 我认为张骞是一位伟大的开拓者。 I wonder if/whether he will finish his difficult task. 我想知道他是否会完成这项艰巨的任务。 They asked whether the great man would come back home or not. 他们问这位伟人是否会回家。 5 that 和 if/whether 引导的宾语从句 that 引导的宾语从句 ①由陈述句转变而来，that 只起连接作用，本身无词义，不在从句充当句子成分。 ②省略规则：口语、书面简单句中that 经常可以省略；如果有多个并列宾语从句，第一个 that 可省，后面的 that不能省略。 ③常用主句动词：think, say, believe, hope, know, realize, find 等。 I think (that) online learning is very helpful. 我认为线上学习十分有帮助。 She said that she would finish her online course on time. 她说她会按时完成线上课程。 that 可以省略；从句online learning is very helpful是完整陈述句，作主句 think 的宾语。 主句为过去时 said，从句时态随之变为过去将来时；此处 that 保留。 6 that 和 if/whether 引导的宾语从句 that 引导的宾语从句 易错点 1：否定转移 主句动词为 think /believe/suppose，主语是第一人称 (I/we)，从句否定含义要转移到主句，从句用肯定句。 × I think that he isn’t good at smart‑learning. ✓ I don’t think (that) he is good at smart‑learning. 我认为他并不擅长智慧学习。 × I believe that he won’t keep his promise. ✓ I don’t believe (that) he will keep his promise. 我认为他不会信守承诺。 × We suppose that the task is not easy. ✓ We don’t suppose (that) the task is easy. 我们认为这项任务并不容易。 7 that 和 if/whether 引导的宾语从句 that 引导的宾语从句 易错点 2：不能省略 that 的场景 ① 并列多个宾语从句，第二个从句的 that 不可丢 He says (that) he likes online study and that it saves much time. 他说他喜欢线上学习，而且这很节省时间。 ② 主句与从句间隔较远时，that 不省略，避免句意混乱。 We believe, after reading lots of historical stories, that great people’s spirits can always encourage us in our daily life. 在读过许多历史故事之后，我们相信伟人的精神总能在日常生活中激励我们。 She thought, from what she had seen, that hard‑work would finally bring success. 根据所见所闻，她认为努力终会带来成功。 主句 She thought 和宾语从句被插入语 from what she had seen 隔开，中间插入成分把主从句拉开距离，that 必须保留。 主句 We believe 和后面宾语从句被插入语 after reading lots of historical stories 隔开，距离较远，that 不能省略 第一个宾语从句的 that 可以省略；用 and 并列连接第二个宾语从句时，第二个 that 必须写出来，不能省略，以此清晰提示后面是另一层宾语从句，防止句子结构混淆。 8 that 和 if/whether 引导的宾语从句 that 引导的宾语从句 时态规则（宾语从句通用） ①主句一般现在时，从句根据实际语境选用任意时态。 I know (that) he has learned smart‑learning skills. 我知道他已经学会智慧学习技巧。 ②主句一般过去时，从句必须使用对应过去类时态（一般过去、过去进行、过去将来、过去完成）。 He told me (that) he studied online last year. 他告诉我他去年进行线上学习。 ③特例：从句是客观真理、客观事实，永远用一般现在时，不受主句过去时态影响。 Our teacher told us (that) practice makes perfect. 老师告诉我们熟能生巧。 9 that 和 if/whether 引导的宾语从句 If/whether 引导的宾语从句 ①由一般疑问句（Yes/No 问句）改造而来，翻译成 “是否”，if、whether 大多数情况可以互换。 ②从句必须改成陈述句语序：主语 + 谓语，禁止助动词提前。 ③常用主句动词：wonder, ask, know, find out, want to know 等。 I wonder if/whether online classes are fit for me. 我想知道网课是否适合我。 Could you tell me if/whether he has improved his learning skills? 你能告诉我他是否已经提升了学习技能吗？ 原一般疑问句：Are online classes fit for me? →改为陈述语序online classes are fit for me 宾语从句必须使用陈述句语序：主语he置于谓语has improved之前，不能写成 if/whether has he improved…。 10 that 和 if/whether 引导的宾语从句 If/whether 引导的宾语从句-只能用 whether，不能用if的场景 ①后面紧跟 or not，只能用 whether ✓ I don’t know whether he will join the online club or not. × I don’t know if he will join the online club or not. 我不知道他是否会参加线上学习社团。 ②放在介词后面作宾语，只用 whether ✓ It depends on whether we have enough free time. × It depends on if we have enough free time. 这取决于我们是否拥有足够空闲时间。 11 that 和 if/whether 引导的宾语从句 If/whether 引导的宾语从句-只能用 whether，不能用if的场景 ③后面接动词不定式 to do，只用 whether ✓ She hasn’t decided whether to take the smart‑learning course. × She hasn’t decided if to take the smart‑learning course. 她还没有决定是否选这门智慧学习课程。 ④并列选择，与 or 连用，只用 whether I’m thinking whether I should study online or read books. 我正在思考我应该线上学习还是看书。 We are discussing whether we should take the hard task or give it up. 我们正在讨论我们是应当接受这项艰巨任务还是放弃它。 12 that 和 if/whether 引导的宾语从句 if 有两个身份: ① 宾语从句中：if = whether，译为是否; ② 条件状语从句中：if 译为如果，此时绝对不能替换成 whether。 ①if 引导宾语从句（是否） I don’t know if he will join the after‑school course. 我不知道他是否会参加这门课后课程。 Please tell me if you have finished your project. 请告诉我你是否已经完成你的项目。 if = whether，可互换；属于宾语从句。 if = whether，可互换。 13 that 和 if/whether 引导的宾语从句 if 有两个身份: ① 宾语从句中：if = whether，译为是否; ② 条件状语从句中：if 译为如果，此时绝对不能替换成 whether。 ② if 引导条件状语从句（如果），不可用 whether 替换 If he joins the course, he will make great progress. 如果他参加这门课程，他将会取得很大进步。 You will learn a lot if you keep reading traditional‑culture stories. 如果你坚持阅读传统文化故事，你会学到很多。 条件状语从句，表假设；不能写成 Whether he joins the course… 条件状语从句，表假设 14 that 和 if/whether 引导的宾语从句 that VS if/whether 对比总结 引导词 来源 含义 是否可省略 核心特征 that 陈述句 无词义 大多可省略 转述陈述事实、观点 if/whether 一般疑问句 是否 不可省略 表达疑问、不确定 例句对照: I hope that smart learning can help me a lot. 我希望智慧学习能帮到我很多。（陈述观点，that 从句） I wonder whether/if smart learning can help me a lot. 我想知道智慧学习是否能帮到我很多。（疑问，if/whether 从句） 15 that 和 if/whether 引导的宾语从句 宾语从句三要素，引导词、语序、时态要记牢； 陈述句用 that 连，that 省掉也常见； 一般疑问变宾从，if/whether “是否” 来接班； 从句必用陈述序，主过从过是主线； 客观真理永现一，whether 特殊记四点。 口 诀 16 that 和 if/whether 引导的宾语从句 易 错 提 醒 错：Could you tell me if is he good at online study? 对：Could you tell me if he is good at online study? （从句必须陈述语序，主语放 be 动词前面） 不要混淆：It is +adj. +that（形式主语）≠ that 引导宾语从句。 I find that online learning is useful.（宾语从句，find 的宾语） It is useful that we use smart learning.（形式主语，that 从句是真正主语） I think that hard‑work brings success.（宾语从句，think 的宾语） It is true that hard‑work brings success.（形式主语，that 从句做真正主语） 17 02 课后练习 课后练习 ①我相信阅读对学习很重要。 ②我认为最好的方法就是做数学题。 ③彼得发现他可以把物理和现实生活中的事物联系起来。 ④我想知道你能否帮我。 ⑤我想知道你课下是否读英语书。 语法要点解析 ① that 引导宾语从句：前三句由 that 引导，that 无实际词义，可以省略。 结构：主语 + believe/think/find + (that) + 陈述句（宾语从句） 从句一律陈述语序：主语在前，谓语在后。 ②if /whether 引导宾语从句：后两句 if / whether 译为是否，不可以省略；由一般疑问句转变而来。结构：主语 + wonder / want to know + if/whether + 陈述句（宾语从句） ③从句语序统一规则：全部宾语从句都是陈述语序，不能写成疑问语序。 × I wonder if could you help me. ✓ I wonder if you could help me. ④时态：主句为一般现在时（believe /think/find /wonder/want to know），宾语从句根据实际语义选用时态。 课后练习 whether whether/if whether/if that that 1. Jim doesn’t know whether he can take part in the research project or not. 翻译：吉姆不知道他是否能够参加这个研究项目。 考点：后面出现 or not，只能用 whether，不能用 if。 2. My parents think that they need to be stricter about my studies. 翻译：我父母认为他们需要对我的学习更加严格。 考点：think 后接陈述事实的宾语从句，用 that；that 此处可以省略。 3. Ms Gao understands that some students need more time to improve. 翻译：高老师明白一些学生需要更多时间去提升。 考点：understand 后接陈述句宾语从句，用 that；that 可以省略。 4. Terry wonders whether / if it will be easy to study courses on AI. 翻译：特里想知道学习人工智能课程会不会很容易。 考点：wonder 表示 “想知道”，表达 “是否”，if、whether 二者可以互换。 5. Could you tell me whether / if this sentence is correct in English? 翻译：你能告诉我这个英语句子是否正确吗？ 考点：Could you tell me … 委婉问句，表 “是否”，if、whether 均可互换。 20 课后练习 Ｃ Ｄ Ｂ Ａ E 中文翻译 青年时期，华罗庚为了养家离开了高中。但他热爱数 学，不愿放弃。他想知道是否还有继续学习的途径。最后，他决定通过研读数学书籍来自学。后来华罗庚向年轻学习者介绍了一套读书学习方法。他建议学习者要认真阅读、记笔记，然后总结要点。他曾说：“一本书刚开始厚重难懂，当你理解加深之后，它就变薄了。” 作为一名积极的学习者，无论生活和学习遇到什么困难，华罗庚始终保持乐观。很难相信这样一位天才在校考试也曾失利，但这确是事实。他说学习存在诸多挑战，循序渐进十分重要。 03 拓展练习 拓展练习 单项选择 1．She wondered ________ he would come on time. A．that B．if C．what D．which 2．He thinks ________ maths is very interesting. A．that B．if C．whether D．what 3．I believe ________ hard work leads to success. A．that B．if C．what D．which 4．My teacher told me ________ I should practise more. A．that B．if C．whether D．which 5．—I wondered ________ Lucy would come to our party tonight. —She sent me a message just now—she said she would be here on time. A．when B．if C．what D．where 拓展练习 6．I’m feeling so blue. I really wonder ________. A．who can I ask for help B．how I dealt with these problems C．if I am the only one to feel this way D．that I can do with these problems 7．—Will you buy this tie? —I have no idea. I don’t know ________ the color matches his new shirt or not. A．whether B．that C．why D．if 8．—What did our teacher say just now? —He asked ________. A．if we need help or not B．whether we had any questions C．which questions we can’t understand D．that we could finish homework on time 9．—What’s wrong with the dog? —We’re sure ________ something is wrong with it, but we doubt ________ the disease can kill it. A．if; whether B．that; that C．whether; if D．that; whether 拓展练习 10．—I never doubt ________ she can do it well. —Neither do I. I just doubt ________ she is willing to do this. A．whether: that B．that: if C．if: whether D．that: that 11．— That old man looks weak these days. — Yes. We’re sure ________ something is wrong with him and we doubt ________ the disease can be cured. A．/; whether B．that; that C．whether; if D．if; whether 12．—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 13．—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 拓展练习 14．I don’t doubt ________ he can do the job well,  but I doubt ________ he can fi nish it on time. A．if; that B．that; whether C．whether; if D．that; that 15．—What’s wrong with your uncle? —We’re sure ________ something is wrong with him, but we doubt ________ the disease can kill him. A．if; whether B．that; that C．whether; if D．that; whether 16．—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 17．—Would you like to go climbing tomorrow? —I'd like to, but I am not sure I will finish my work by then or not. A．if B．whether C．that D．which 拓展练习 用that/whether/if填空 1．I don’t know he has already handed in his homework to the teacher. 2．The headmaster told us our school will hold a culture festival next month. 3．They are discussing they should change the time of the English competition. 4．Do you know we will go to the mountain for a trip this weekend or not? 5．He said with confidence he could work out all the problems in the exam. 6．I haven’ t figured out we will go to the bookstore to buy review materials this Sunday. 7．My tutor reminded me I must finish the grammar exercises before the next tutoring session. 8．The students are debating they should hold a self-review meeting before the final exam. 9．It’s obvious regular practice is the key to mastering English grammar well. 10．He wants to confirm the extra review class will be held on Saturday morning or not.   if/whether that whether if/whether if/whether that that if/whether that whether 27 拓展练习 用that/if/whether完成留言 MESSAGE BOARD Hello,   I went to your museum today. You missed Pluto in the model of the solar system. There were only eight planets in it. I don’t know _______________this is a mistake. Dear Daniel,   In the past, people thought _______________ there were nine planets. However, questions were raised about _______________Pluto was a planet. In 2006, scientists agreed _______________ a true planet:   1. moves around the sun   2. is round (or nearly round)   3. can clear things in its way   Pluto doesn’t meet the third point. Therefore, we now believe _______________ there are eight true planets in the solar system. That’s why Pluto isn’t part of the model. Please let me know __________ you need more information. whether/if that that whether/if whether that 28 新人教版/英语/九年级 THE END Unit 3 Smart Learning null 98248.305 eng - iTunNORM 000000D8 000000DE 00000875 00000854 00016AC1 0001501F 00007E86 0000741A 00011939 00010E4E� eng - iTunSMPB 00000000 00000210 00000916 000000000042115A 00000000 003BD65E 00000000 00000000 00000000 00000000 00000000 00000000� $