2026人教版英语九年级课时详案Unit6教案

单元总览本单元围绕“发明与技术”这一核心主题展开，旨在引导学生了解重要发明的历史、影响及其背后的科学原理，同时学习相关的词汇、句型和语法结构，特别是被动语态的运用。通过听、说、读、写等多种语言实践活动，培养学生的语言综合运用能力、批判性思维能力和创新意识。单元内容贴近学生生活，富有时代气息，能够激发学生对科学技术的兴趣，培养其探究精神和社会责任感。单元教学目标1.知识与技能*理解并能正确运用一般过去时的被动语态。*能听懂关于发明物介绍、历史事件描述的对话或短文。*能就“发明”这一话题进行简单的口头交流，如询问发明时间、发明者、用途等。*能读懂介绍重要发明及其影响的文章，理解大意，获取关键信息。*能写出关于某一发明的简短介绍，包括其基本信息、用途和影响。2.过程与方法*通过图片、视频、实物等多种媒介导入话题，激发学习兴趣。*采用任务型教学法，引导学生在完成任务的过程中主动学习和运用语言。*鼓励学生通过小组合作、讨论、探究等方式进行学习，培养自主学习和合作学习能力。*引导学生运用思维导图等工具梳理知识，构建知识网络。3.情感态度与价值观*了解科学技术对人类生活和社会发展的巨大影响，培养对科学的兴趣。*学习发明家勇于探索、不断创新的精神。*认识到发明创造源于生活，服务于生活，鼓励学生观察生活，培养创新思维。*增强民族自豪感，了解中国对世界文明的贡献。单元教学重难点*重点：*一般过去时的被动语态的构成和用法。*与发明相关的词汇和句型。*理解和谈论发明物的相关信息。*难点：*被动语态中“by+动作执行者”的正确使用。*主动语态与被动语态的转换。*在具体语境中灵活运用被动语态。课时安排（建议5课时）*Period1:SectionA(1a-2d)-引入主题，初步感知被动语态*Period2:SectionA(3a-4c)-深入学习被动语态，阅读训练*Period3:SectionB(1a-2e)-词汇拓展，听力与口语实践，深度阅读*Period4:SectionB(3a-SelfCheck)-写作训练，综合技能运用*Period5:Review&Assessment-单元复习与评价Period1:SectionA(1a-2d)教学目标1.能识别并说出图片中展示的常见发明物的英文名称。2.能运用句型"Whenwasitinvented?Itwasinventedin...Whowasitinventedby?Itwasinventedby..."询问和回答发明物的发明时间和发明者。3.初步感知并理解一般过去时被动语态的构成和意义。4.能听懂关于发明物用途的简短对话。教学重难点*重点：新词汇的学习；询问发明时间和发明者的句型；被动语态的初步感知。*难点：被动语态的结构"was/were+过去分词"。教学准备PPT课件、图片（如电话、电脑、电视、汽车、飞机等发明物）、录音机/多媒体设备。教学过程Step1:Warm-up&Lead-in(5minutes)*T:Goodmorning,class!Howareyoutoday?*Ss:Goodmorning,teacher!We'refine,thankyou.*T:Thesethingsareallveryuseful.Manyofthemaregreatinventions(板书并领读invention/ɪnˈvenʃn/n.发明).Today,wearegoingtotalkaboutsomeimportantinventionsinhistory.(板书Unit6Whenwasitinvented?)Step2:Presentation(15minutes)1.VocabularyLearning(1a):*T:What'sthis?(指着电话图片)*Ss:It'satelephone.*T:Yes,it'satelephone.It'sagreatinvention.(领读telephone/ˈtelɪfəʊn/n.电话)*T:Now,pleasematchtheinventionswiththepicturesin1a.Writethecorrectlettersintheblanks.(给学生2分钟时间完成1a)*Checktheanswerstogether.2.IntroduceKeyStructures:*T:Weknowthesearegreatinventions.Doyouknowwhenthetelephonewasinvented?(板书Whenwasitinvented?)*T:Itwasinventedin1876.(板书Itwasinventedin1876.)(强调wasinvented)*T:Andwhowasitinventedby?(板书Whowasitinventedby?)*T:ItwasinventedbyAlexanderGrahamBell.(板书ItwasinventedbyAlexanderGrahamBell.)(强调by)*带领学生朗读这几个句型，注意语音语调。*用同样的方式介绍电视(inventedin1927,byPhiloFarnsworth)和电灯泡(inventedin1879,byThomasEdison)的信息，让学生进一步感知句型。Step3:Practice(15minutes)*Giveanexample:*A:Whenwasthetelephoneinvented?*B:Itwasinventedin1876.*A:Whowasitinventedby?*B:ItwasinventedbyAlexanderGrahamBell.*Studentspracticefor3-4minutes.Walkaroundtoofferhelp.2.Listening(2a&2b):*T:Wejusttalkedaboutsomeoldinventions.Now,let'slistentoaconversationaboutamorerecentinvention—potatochips.Whatdoyouknowaboutpotatochips?(引导学生简单讨论)*T:First,listenandcircleT(fortrue)orF(forfalse)in2a.*Playtherecordingforthefirsttime.*Checktheanswers.*Playtherecordingforthesecondtime.Step4:Consolidation(7minutes)1.Role-play(2d):*T:Now,let'slookattheconversationin2d.It'sbetweenPaulandRoy,talkingabouttheinventionoftea.*Playtherecordingandaskstudentstofollowalong.Step5:SummaryandHomework(3minutes)1.Summary:*T:Today,welearnedsomenewwordsaboutinventions.Andwelearnedhowtoaskandansweraboutwhenandbywhomaninventionwasinvented.Whatarethekeysentences?(引导学生说出Whenwasitinvented?Itwasinventedin...Whowasitinventedby?Itwasinventedby...)*T:Thisstructureiscalledthepassivevoiceinthesimplepasttense.(简要提及一般过去时的被动语态)2.Homework:*CopythenewwordsandphrasesinSectionA1a-2d.*Make5sentencesusing"Whenwas...invented?Itwasinventedin..."and"Whowas...inventedby?Itwasinventedby...".Youcanchooseinventionswelearnedtodayorothersyouknow.*Readtheconversationin2daloud.板书设计Unit6Whenwasitinvented?Newwords:invention(n.)发明invent(v.)发明telephone(n.)电话television(n.)电视lightbulb(n.)电灯泡radio(n.)收音机bymistake错误地byaccident偶然地Keystructures:A:Whenwasitinvented?B:Itwasinventedin+年份.A:Whowasitinventedby?B:Itwasinventedby+人名.---Period2:SectionA(3a-4c)教学目标1.能理解并运用一般过去时被动语态的肯定句、否定句和疑问句。2.能读懂关于茶叶发明的短文，理解其大意和关键信息。3.能根据短文内容回答相关问题。4.能将主动语态的句子转换为被动语态。教学重难点*重点：一般过去时被动语态的各种句式；阅读技能训练。*难点：主动语态与被动语态的转换；被动语态中动作执行者的省略。教学准备PPT课件、录音机/多媒体设备、主动语态与被动语态转换练习单。教学过程Step1:Warm-up(5minutes)1.Review:*T:Goodmorning,class.Lastlesson,wetalkedaboutsomeinventions.Whocantellmewhenthetelephonewasinvented?(Ss:Itwasinventedin1876.)Whowasitinventedby?(Ss:ItwasinventedbyAlexanderGrahamBell.)*T:Verygood.Now,let'splayaquickgame.I'llshowyousomepicturesofinventions,andyoutellme"Itwasinventedin..."or"Itwasinventedby...".(快速展示图片，如飞机、汽车等，学生抢答)Step2:Pre-reading(5minutes)1.Lead-into3a:*T:Teaisoneofthemostpopulardrinksintheworld.Doyouknowhowteawasinvented?Today,we'llreadapassageabouttheinventionoftea.Step3:While-reading(15minutes)1.Fastreading:*T:Readthepassagequicklyandfindout:Whoistheinventoroftea?(提示学生关注第一段最后一句)*Ss:ShenNong.2.Carefulreading:*Givestudents5minutestoreadandanswer.3.Languagepoints:*引导学生找出文中的被动语态句子：*"Didyouknowthattea,themostpopulardrinkintheworld(afterwater),wasinventedbyaccident?"*"...teawasbroughttoKoreaandJapanduringthe6thand7thcenturies."*简单分析这些句子的结构和意义，强调被动语态在描述客观事实或当动作执行者不明确、不重要时的使用。Step4:GrammarFocus(10minutes)1.Present"GrammarFocus":*T:Let'slookatthesentencesinGrammarFocus.Theyareallinthepassivevoice.(板书passivevoice)*带领学生朗读GrammarFocus中的句子，体会主动与被动的区别。*板书：*肯定句:S+was/were+过去分词(+bysb./sth.)*e.g.,TeawasinventedbyShenNong.*e.g.,Theleaveswereputintothewater.*否定句:S+was/were+not+过去分词(+bysb./sth.)*e.g.,Teawasnotinventedbyaccident.(强调事实时可如此说，但本课课文说的是偶然)*e.g.,Theleaveswerenottakenoutimmediately.*一般疑问句:Was/Were+S+过去分词(+bysb./sth.)?*e.g.,WasteainventedbyShenNong?*e.g.,Weretheleavesputintothewater?*强调be动词的选择(was用于单数主语，were用于复数主语)和过去分词的正确形式。*解释by引出动作的执行者，当执行者不明确或不重要时可以省略。Step5:Practice(12minutes)1.4a:Rewritethesentencesusingthepassivevoice.*T:Now,let'spracticechangingactivesentencesintopassivesentences.Lookat4a.Let'sdothefirstonetogether.*Example:Theysoldthefridgeatalowprice.→Thefridgewassoldatalowprice.2.4b:Fillintheblankswiththecorrectformsoftheverbsinbrackets.*Studentsworkalone,thencheckwithapartner.*Checkanswersasaclass.3.4c:Askyourpartnerquestionsabouttheinventions.*Modelwithastudent:*T:Whatisthesubject?(Ss:Theabacus.)*T:Whenwastheabacusinvented?*S:Itwasinventedinthe6thcenturybytheChinese.*Studentspracticefor3-4minutes.Step6:SummaryandHomework(3minutes)1.Summary:*T:Today,welearnedmoreaboutthepassivevoiceinthesimplepasttense.Rememberthestructure:was/were+pastparticiple.We