Unit 6 Section A（1a-1c）课件2024-2025学年人教版九年级英语

Unit6Whenwasitinvented?SectionA1a~1cLearningaims1’(1).Learnsomenewwordsandphrases.(2).Learnthegrammar:thePassivevoice(pasttense).(3).Talkabouttheinventions.单词学习：根据音标学单词。(语音测试)[hiːl][skuːp][,ɪlek'trɪsɪtɪ][staɪl]['pra:dʒekt]heeln.鞋跟，足跟scoopn.勺，铲子electricityn.电，电能stylen.样式；款式projectn.项目，工程instyle流行outofstyle/date过时electric[ɪ'lektrɪk]adj.电的；电动的即时演练：1.Thisdressis___thisyear,andIreallywanttogetone.A.indangerB.introubleC.instyleD.outofstyle2.

—Ihearyourgrandpahasanoldcupinyourhome.

—Yes.It____drinkingtealongagoandmygrandpa_______drinkteawithitwhenhewasyoung.A．wasusedto;wasusedtoB．usedfor;usedtoC.wasusedfor;wasusedtoD．wasusedfor;usedtoCDWhataretheFourGreatInventionsinancientChina?LeadinChinesefourgreatancientinventionscompassgunpowderprintingpapermakingModerninventionscalculator→n.v.发明Inventor发明者Invention发明

The

many

allhislife.inventorinventedinventions

inventThetelephonewasinventedbyBell.Bellinvented

thetelephoneThecarwasinventedbyKarlBenzKarlBenzinventedthecar.ThetelevisionwasinventedbyBairdBairdinventedthetelevision.12341aNumberthem[1-4](1=first,4=last).1bListenandmatchtheinventionswiththeyears.-------1876--------1885--------1927--------1971dacbPracticethesentences.Pictured:Thetelephonewasinventedineighteenseventy-six(1876).Picturea:Carswereinventedineighteeneighty-five(1885).Picturec:TheTVwasinventedaroundnineteentwenty-seven(1927).Pictureb:Thepersonalcomputerswereinventedinnineteenseventy-one(1971).Listenandfill.Alice:Wasyourlifeverydifficultwhenyouwereakid?Grandma:Oh,notreally.Why?Alice:Well,youdidn’thavemoderninventionslikea

,right?Grandma:Ofcoursewedid!HowolddoyouthinkIam?Thetelephonewasin1876.Youneedtotakeahistoryclass,Alice!Alice:Haha!Howabout

?Theyweren’tinventedyet,werethey?Grandma:Yes,theywere.Carswereinventedin1885.Myfamilyhadacar.telephonecarsAlice:Well,didyouhaveaTV?Grandma:No,wecouldn’t

one.Theywereexpensiveinthosedays.TheTVwasinventedaround1927,Ithink.Alice:Well,Iknowthatyoudidn’thavea

becausewelearnedinschoolthatpersonalcomputerswereinventedin1971.Grandma:You’reright.ButIhaveonenow!affordcomputerA:Whenwasthe_______invented?B:Ithinkitwasinventedin______.Pairwork(1c:)1885187619271971KarlBenz

inventedthecar.______wasinvented

by_______.ThecarKarlBenz观察与思考：Edison

invented

thelightbulb.Thelightbulbwasinvented

byEdison.Bell

invented

thetelephone.___________wasinvented

by___.ThetelephoneBellThepassivevoice.被动语态被动语态的构成:be动词+(及物动词的)过去分词

一般现在时一般过去时am(is,are)+donewas(were)+done{Thecarwasinventedin1885.Thepassivevoice.被动语态主动语态变被动语态的结构图:Bellinventedthetelephonein1876.ThetelephonewasinventedbyBellin1876.主语谓语动词过去时宾语时间状语主语谓语动词的过去分词宾语时间状语学生讨论，教师点拨6'观察句子，总结一般过去时的被动语态结构：（1）Thetelephonewasinventedin1876.（2）Thetelephonewasnotinventedin1876.

（3）Wasthetelephoneinventedin1876?（4）eg:Whenwasthetelephoneinvented?

肯定句：主语+was/were+及物动词过去分词+(by...)否定句：主语+was/were+not+及物动词过去分词

+(by...)一般疑问句：Be(Was/Were)+主语+及物动词过去分词+（by...）特殊疑问句：特殊疑问词+was/were+主语+及物动词过去分词(+by...)?学以致用完成下列句子：1Ithinkthecomputer_________(invent)beforetheTV.2Theglassis_____(break).It________(break)bylittleTomthismorning.3Mikewasn,tathomeyesterday.He________(ask)tohelpwithJenny,sEnglishwasinventedbrokenwasbrokenwasasked【辨析】invent，discover,find,create

教师点拨：1.invent(v.)发明；创造invent

指发明创造出自然界本来不存在的东西，如工具、方法、手段、汽车、电器、合成材料等。Bell

inventedthetelephone.贝尔发明了电话。Smith

invented

anewteachingmethod.史密斯发明了一种新的教学方法。2.discover是“发现”的意思，是指发现原来就有而一直没被发现，如发现电、煤、石油等矿藏及新星、星系或科学真理等。Recentlytheyhavediscoveredacomet.最近他们发现了一颗彗星。3.find的意思是“寻找”，强调找的结果，并不指发现。I'vetriedtofindanothercopybutcouldn'tfindone.我试图再找一本，但没能弄到。4.create指有目的地把原材料制成新产品，也指创造出原来不存在的或与众不同的事物。Mancreateshimself.人类创造了自己。Anovelistcreatescharactersandaplot.小说家塑造人物并设计情节。根据语境提示，用invent,discover，find或create的适当形式填空，完成句子。1.When_____thestreamengine（蒸汽机）_________?2.Ican’t____mybike,I’mlookingforit.3.Scientistsarenowtryingto________ifthisispossible.4.Doyouknowwho_________theplane？5.He________quiteanumberofwonderfulcharactersinhisplay.即时演练：.was

invented

finddiscoverinventedcreated1.Anewlibrary_____inourschoollastyear.A.isbuilt

B.wasbuiltC.builtD.build2.

These