Unit 3 Smart Learning Section A (4a-4c)课件2026-2027学年人教版英语九年级上册

该初中英语课件聚焦that、if与whether引导的宾语从句，涵盖结构、陈述语序、时态呼应规则及引导词区别。课堂通过4a-4c例句让学生圈连接词、划从句，先归纳that的省略与常用动词，再对比if/whether的用法差异，搭建从具体到抽象的学习支架。 其亮点是结合“Smart Learning”主题，以华罗庚自学故事为语境渗透文化意识，通过发现式学习引导学生自主观察总结规律，提升思维品质。练习含填空、段落补全等，既巩固语法又培养学习能力，助力学生在真实交际中用语法，教师可直接使用分层任务提升教学效率。

Section A (4a-4c) Unit 3 Smart Learning 01 Teaching Objectives 语言能力：学生能够在"Smart Learning"主题语境中观察、理解和归纳 that、if 与 whether 引导的宾语从句的结构与功能，掌握宾语从句的语序（陈述语序）及主从句时态呼应规则；能正确区分 that 与 if/whether 的使用条件，在口语和书面表达中准确运用宾语从句转述他人观点、询问信息，完成与学习话题相关的语言交际任务。 思维品质：学生通过比较 that 引导陈述内容与 if/whether 引导疑问内容的差异，分析 if 与 whether 在用法上的联系与区别，培养观察、比较与归纳的逻辑思维能力；在判断从句引导词、梳理语序和时态规则的过程中发展批判性思维，能举一反三地分析和解决语法运用中的实际问题，形成条理清晰的语言推理习惯。 学习能力：学生借助语法发现式学习活动，自主观察例句、总结规律并迁移运用，提升自主归纳与举一反三的学习能力；能将宾语从句的学习与单元"Smart Learning"主题结合，运用所学语法描述和分享学习策略，养成在真实语境中学语法、用语法的良好习惯，逐步增强自我监控与策略调整的意识。 文化意识：学生通过运用宾语从句转述和讨论他人的学习方法与学习态度，体会开放交流、善于借鉴他人经验的积极学习文化；认识到不同文化背景下学习方式和学习观念的多样性，尊重并包容差异，树立乐于分享、主动求知的终身学习意识，增强跨文化沟通中理性表达与理解他人的能力。 02 Teaching Points 教学重点：掌握 that、if 与 whether 引导的宾语从句的基本结构，理解并运用宾语从句的陈述语序和主从句时态呼应规则；能根据主句与从句的逻辑关系正确选择引导词，在"Smart Learning"语境中运用宾语从句完成转述、询问与表达等语言实践活动。 教学难点：准确区分 if 与 whether 的使用条件（如 whether 可与 or not 连用、可接不定式，而 if 不可以），并能根据语境恰当选择；在复杂语境中灵活处理宾语从句的时态呼应（尤其是主句为过去时的情况），做到表达准确、得体、连贯，形成对宾语从句独立而有逻辑的运用能力。 03 Section A (4a-4c) I believe (that) reading is important for learning. I think (that) the best way is to do maths problems. Peter finds (that) he can connect physics with something in real life. I wonder if/whether you could help me. I want to know if/whether you read English books outside class. Read the sentences. Circle the connecting words and underline the object clauses. that引导的宾语从句 一、基本概念 宾语从句就是在复合句中作宾语的从句。由 that 引导的宾语从句，是初中最基础的宾语从句类型，that 仅起连接作用，无实际词义，不充当句子成分。 二、基本结构 句型公式：主句 + that + 完整陈述句 主句主语 + 谓语动词 + (that) + 主语 + 谓语 + 其他 例句：I think (that) you are an active learner. 我认为你是一名主动学习者。 She says (that) English is interesting. 她说英语很有趣。 三、核心用法 1. that 的省略规则 that引导的宾语从句 （1）在绝大多数情况下，that 可以省略，口语、简单句中常直接去掉。 （2）以下情况 that 一般不省略： 从句位于句首时 That he would come was true. 他会来这件事是真的。 主句谓语后接多个并列的宾语从句时，第一个 that 可省，后面的 that 不可省。 He says (that) he likes English and that he practices every day. 他说他喜欢英语，并且每天都练习。 主句与从句之间有插入语隔开时，that 不省略。 2. 常用主句谓语动词 后面常接 that 宾语从句的动词：think, believe, say, tell, know, hope, hear, find, guess 等。 that引导的宾语从句 例句：I hope (that) I can learn English well. 我希望我能学好英语。 We know (that) practice makes perfect. 我们知道熟能生巧。 3. 两大必考规则：语序 + 时态 （1）语序规则：从句必须用陈述语序 陈述语序：主语在前，谓语在后，绝对不能用疑问语序。 ✅ I think (that) he is right.（正确） ❌ I think (that) is he right.（错误） （2）时态呼应规则（主从句时态一致） 主句为一般现在时 → 从句时态根据实际语境任意选择（一般现在 / 过去 / 将来均可） that引导的宾语从句 He says (that) he learned English before. 他说他以前学过英语。（从句一般过去时） 主句为一般过去时 → 从句时态统一变为对应的过去时态（时态倒退） She said (that) she liked reading. 她说她喜欢阅读。（一般现在时 → 一般过去时） 特殊特例：从句讲述客观真理、自然现象、永恒事实 无论主句是什么时态，从句一律用一般现在时。 The teacher told us (that) the earth goes around the sun. 老师告诉我们地球绕着太阳转。（客观真理，用一般现在时） 四、否定转移 当主句主语为 I / We，谓语动词是 think, believe, suppose 时，若从句表达否定含义，否定词 not 要转移到主句上，从句用肯定形式。 that引导的宾语从句 原句：我认为他不会来。 ✅ I don't think (that) he will come.（正确，否定转移） ❌ I think (that) he won't come.（错误） I don't believe (that) you are wrong. 我认为你没错。 五、易混点与易错点辨析 1. that 引导的宾语从句 vs 定语从句中的 that 宾语从句中：that 无词义，不充当成分，多数可省略；从句本身是完整句子。 定语从句中：that 指代先行词，在从句中充当主语 / 宾语，作宾语时可省，作主语不可省。 例：宾语从句：I know that he likes music.（that 无成分，可省） that引导的宾语从句 定语从句：The music that he likes is popular.（that 指代 music，在从句中作 likes 的宾语，可省） 2. that 与 if/whether 引导的宾语从句的区别 that 引导的从句是陈述事实，无疑问含义； if/whether 引导的从句表示不确定、疑问，意为 “是否”。 例句： I hope that you can come.（陈述愿望，无疑问） I don't know if/whether you can come.（表示不确定，有疑问） Exercise. 一、判断下列句子中 that 是否可以省略，能省略的打 “√”，不能省略的打 “×” 1. He says that he will help us. 2. I think that she is right and that she will win. 3. We believe, as we all know, that hard work leads to success. 二、用正确的时态和语序完成句子 1. The teacher told us that the moon ______ (go) around the earth. 2. She said that she ______ (visit) the Great Wall last year. 3. I know that ______ (he / be) a good student. goes visited he is if / whether引导的宾语从句 一、基本含义与用法 if 和 whether 引导宾语从句时，意思均为“是否”，用来表达说话人心中的疑问、不确定。二者在多数普通句式里可以互换。这类从句同样要遵循陈述语序，整体放在主句谓语动词之后作宾语。 基本结构：主句 + if/whether + 陈述语序的从句。 例句：I don't know if he will come. 我不知道他是否会来。 She asks whether you like music. 她问你是否喜欢音乐。 二、核心句式规则 1. 语序要求 无论主句是陈述句还是疑问句，if/whether 引导的宾语从句一律使用主语 + 谓语的陈 if / whether引导的宾语从句 述语序，绝对不能用疑问语序。 错误：Do you know if is he at home? 正确：Do you know if he is at home? 2. 时态呼应 时态规则和 that 引导的宾语从句完全一致。 （1）主句为一般现在时、一般将来时，从句时态根据实际场景灵活变化。 I wonder whether she went to school yesterday. 我想知道她昨天有没有去上学。 （2）主句为一般过去时，从句通常改为对应的过去类时态。 He asked if they would play basketball. 他问他们是否要去打篮球。 （3）若从句内容是客观真理、常识，从句始终用一般现在时，不受主句时态影响。 if / whether引导的宾语从句 三、if 和 whether 的用法区别 大部分情况两者通用，但以下只能用 whether，不能用 if： （1）从句前面有介词时，只用 whether。 I'm thinking about whether we can take a break. 我在考虑我们能不能休息一下。 （2）从句后紧跟 or not 时，常用 whether。 I don't know whether he will come or not. 我不知道他会不会来。 （3）与不定式 to do 连用时，只用 whether。 She doesn't know whether to leave now. 她不知道现在该不该离开。 （4）引导的宾语从句置于句首时，只用 whether。 Whether he agrees, I can't tell. 我说不准他是否同意。 if / whether引导的宾语从句 （5）补充：当句子中有选择含义、出现 or 连接选项时，一般也优先使用 whether。 I don't know whether you like tea or coffee. 四、常见搭配动词 常后接 if/whether 宾语从句的动词有：know, ask, wonder, find out, decide, doubt 等。 Please find out if the train is on time. 请查一下火车是否准点。 五、易混区分：宾语从句的 if 和 条件状语从句的 if if 引导宾语从句：译为是否，表疑问，时态按宾语从句规则变化。 I don't know if it will rain tomorrow. 我不知道明天是否会下雨。 if 引导条件状语从句：译为如果，表假设，遵循主将从现原则。 If it rains tomorrow, we will stay at home. 如果明天下雨，我们就待在家里。 Exercise. I don't know ___________ he will come to our English party. She asks ___________ you have finished your homework. We are wondering ___________ to take part in the speech competition. Could you tell me ___________ it will rain tomorrow or not? He didn't know ___________ his friend liked this new learning method. It all depends on ___________ we can get enough time to practice. I want to know ___________ your brother enjoys reading English stories. They haven't decided ___________ they will go abroad for study. if / whether if / whether if / whether if / whether if / whether whether whether whether Complete the sentences with that or whether / if. 1. Jim doesn't know _________ he can take part in the research project or not. 2. My parents think _________ they need to be stricter about my studies. 3. Ms Gao understands _________ some students need more time to improve. 4. Terry wonders _________ it will be easy to study courses on AI. 5. Could you tell me _________ this sentence is correct in English? whether that that whether/if whether/if Complete the passage with the correct sentence parts. Then discuss whether you would like to try the learning method suggested. As a youth, Hua Luogeng left high school to support his family. However, he loved maths and did not want to give up. _____ there was a way to continue learning. Finally, he decided to teach himself _____. Hua Luogeng later introduced a reading and learning method to young learners. _____ learners should read and take notes very carefully, and then summarize the key points. A. by studying maths books B. He suggested that C. He wondered whether D. learning had many challenges E. It is hard to believe C A B Complete the passage with the correct sentence parts. Then discuss whether you would like to try the learning method suggested. He once said, “A book starts heavy and thick but becomes thinner as you understand it better.” As an active learner, Hua Luogeng stayed positive no matter what difficulties he met in his life and studies. _____ that such a talent also failed exams in school, but that was true for him. He said that _____ and it was important to take things step by step. A. by studying maths books B. He suggested that C. He wondered whether D. learning had many challenges E. It is hard to believe D E Complete the passage with the correct sentence parts. Then discuss whether you would like to try the learning method suggested. I am willing to try this learning method. Taking careful notes, summarizing key points, and learning step by step can help me understand complex content more easily and avoid frustration from rushing. This works well for all subjects and keeps me steady even when facing setbacks. Think and Share. Why does Hua Luogeng say a thick book will become thinner as you understand it better? Because when you read carefully, take notes, and summarize key points, you filter out unimportant details and grasp the core ideas. What once felt thick and confusing becomes simple and clear in your mind, as you turn the book's content into knowledge you truly understand. Knowledge Expansion. 华罗庚（1910—1985），江苏常州金坛人，祖籍江苏丹阳，著名数学家。他是多国科学院院士，曾任中国科学院数学与系统科学研究院原所长、全国政协副主席等职。 华罗庚早年毕业后进入清华大学工作，曾赴英国剑桥大学访问学习，先后任教于清华大学、美国多所知名高校。1950年，他毅然放弃国外优厚待遇回国，途中写下《致中国全体留美学生的公开信》，归国后主持清华数学系工作，牵头建设国内数学研究体系，长期投身我国数学科研与教育事业。 他深耕解析数论、矩阵几何学等多个数学领域，攻克多项国际数学难题，改良诸多经典研究成果。其创立的华氏定理、华氏不等式、华—王方法等成果，被国际数学界认可并以其姓氏命名，极大提升了中国数学的国际地位。 04 Vocabulary correct adj.正确的，恰当的，合适的；v.改正，纠正，修正 correctly (adv.) 正确地；恰当地 incorrect (adj.) 不正确的；错误的 incorrectly (adv.) 错误地 correction (n.) 改正；修正；批改 易混辨析：correct /right （adj. 表“正确的”，二者多数情况可互换，细微区别） correct 侧重符合规则、标准、事实，多用于学习、答题、语法、计算等正式场景。 right 日常通用词，使用范围更广，还可表示 “合适的、对的”，口语更常用。 易混辨析：correct /fix/repair （v. 表“修正、修理”） correct：专指纠正文字、答案、错误、发音、观点等抽象内容。 fix / repair：指修理物品、机器、家具等实物。 易混辨析：correct / revise correct：侧重改错、订正（把错误改成正确）。 revise：侧重复习；温习（功课、知识点），也可表示 “修改文稿”。 method n.方法，办法，条理，秩序 a method of/for (doing) sth. 做某事的方法 methodically adv. 有条理地；有条不紊地 易混辨析：method /way method：侧重系统、规范、经过总结的正式方法，多指学习、工作、科研等成套办法，搭配：method of/for doing sth. way：通用词，使用范围最广，泛指任意方式、手段、途径，可指具体或抽象做法，搭配：way to do / way of doing sth. 易混辨析：method / means means：侧重手段、工具、媒介，常指为达成目标借助的事物 / 途径，单复数同形，固定搭配 by means of（借助；依靠）。 method：侧重做事的步骤、流程、思路。 suggest v.建议，提议，暗示，表明 suggest sth. 建议某事 suggest doing sth. 建议做某事 suggest (that) 从句 建议……：从句常用(should) + 动词原形，should 可省略。 suggest to sb. sth. /suggest sth. to sb. 向某人建议某事 suggestion /səˈdʒestʃən/ n. 建议；提议 suggestive adj. 暗示的；启发的 易混辨析：suggest vs advise（都可表示 “建议”） suggest：主语直接提出想法，无 suggest sb. to do 结构 advise：侧重劝说、劝告，常用advise sb. to do sth. 劝说某人做某事，也可接 advise doing /advise (that) 从句 易混辨析：suggestion vs advice（均为名词 “建议”） suggestion：可数名词，一条建议 a suggestion，多条建议 suggestions advice：不可数名词，不能加 s；表达 “一条建议” 用 a piece of advice 05 Homework Review the grammar learned in this class. Preview the text for the next class. See you in the next class! $