Unit 5 Section A 3a-3d（第2课时）课件2026-2027学年人教版九年级英语上册

Unit5PowerofideasWhatdocreativeideasbringabout?SectionA(3a-3d)ThinkingQualityLearningAbilityCulturalAwarenessLanguageAbilityLearningObjectivesExtractkeyinfoaboutinventionsusingwh-questionsandpassivevoiceinpasttense.Appreciatehowinventionsconnecttheworldandunderstandtheirroleinhumanprogress.Completeafactchartanduseittodescribeaninvention’shistoryandimpact.Analyzehowtheradiochangedtheworldandevaluatewhatmakesaninventionuseful.Iftherewerean“InventionHallofFame”,whichinventiondoyouthinkshouldbeinit?Why?Whatcanyouseefromthepicture?伽利尔摩・马可尼GuglielmoMarconi/ɡʊˈljɛlmoʊmɑːrˈkoʊni/theearliestwirelesstelegraph最早的无线电报机Readtheconversation.WhatdoesPeterthinkisthemostusefulinventionofalltime?3aFuXing:Whatdoyouthinkisthemostusefulinventionofalltime,Peter?Peter:Ithastobetheradio.FuXing:Theradio?Why?Peter:Beforetheradiowasinvented,informationtravelledveryslowly.Theworldwasmademuchsmallerbytheradio.Suddenly,newscouldbespreadaroundtheworldinseconds.FuXing:Right.Whowastheinventor?Peter:AnItalianinventorcalledGuglielmoMarconi.Hedevelopedtheideainthe1890s.In1901,aradiomessagewassentacrosstheAtlanticOceanforthefirsttime.FuXing:Wow!Thatwasquiteadistanceatthattime.Peter:Yeah.Andbecauseoftheradio,someotherimportantinventionsweredevelopedaswell.FuXing:Likethetelevision?Peter:That'sright.Italsohadabigeffectonmusic.Theradiomadeitmucheasierforpeopletoenjoymusicfromartistsaroundtheworld.havetobe+名词

必须是/成为...Whatdoes“radio”refertohere?VSReadagainandcompletethechart.3bradioFuXing:Whatdoyouthinkisthemostusefulinventionofalltime,Peter?Peter:Ithastobetheradio.FuXing:Theradio?Why?Peter:Beforetheradiowasinvented,informationtravelledveryslowly.Theworldwasmademuchsmallerbytheradio.Suddenly,newscouldbespreadaroundtheworldinseconds.FuXing:Right.Whowastheinventor?Peter:AnItalianinventorcalledGuglielmoMarconi.Hedevelopedtheideainthe1890s.In1901,aradiomessagewassentacrosstheAtlanticOceanforthefirsttime.FuXing:Wow!Thatwasquiteadistanceatthattime.Peter:Yeah.Andbecauseoftheradio,someotherimportantinventionsweredevelopedaswell.FuXing:Likethetelevision?Peter:That'sright.Italsohadabigeffectonmusic.Theradiomadeitmucheasierforpeopletoenjoymusicfromartistsaroundtheworld.Who’stheinventor?FuXing:Whatdoyouthinkisthemostusefulinventionofalltime,Peter?Peter:Ithastobetheradio.FuXing:Theradio?Why?Peter:Beforetheradiowasinvented,informationtravelledveryslowly.Theworldwasmademuchsmallerbytheradio.Suddenly,newscouldbespreadaroundtheworldinseconds.FuXing:Right.Whowastheinventor?Peter:AnItalianinventorcalledGuglielmoMarconi.Hedevelopedtheideainthe1890s.In1901,aradiomessagewassentacrosstheAtlanticOceanforthefirsttime.FuXing:Wow!Thatwasquiteadistanceatthattime.Peter:Yeah.Andbecauseoftheradio,someotherimportantinventionsweredevelopedaswell.FuXing:Likethetelevision?Peter:That'sright.Italsohadabigeffectonmusic.Theradiomadeitmucheasierforpeopletoenjoymusicfromartistsaroundtheworld.Whenwasitinvented?FuXing:Whatdoyouthinkisthemostusefulinventionofalltime,Peter?Peter:Ithastobetheradio.FuXing:Theradio?Why?Peter:Beforetheradiowasinvented,informationtravelledveryslowly.Theworldwasmademuchsmallerbytheradio.Suddenly,newscouldbespreadaroundtheworldinseconds.FuXing:Right.Whowastheinventor?Peter:AnItalianinventorcalledGuglielmoMarconi.Hedevelopedtheideainthe1890s.In1901,aradiomessagewassentacrosstheAtlanticOceanforthefirsttime.FuXing:Wow!Thatwasquiteadistanceatthattime.Peter:Yeah.Andbecauseoftheradio,someotherimportantinventionsweredevelopedaswell.FuXing:Likethetelevision?Peter:That'sright.Italsohadabigeffectonmusic.Theradiomadeitmucheasierforpeopletoenjoymusicfromartistsaroundtheworld.Howdiditchangetheworld?①②③④Readagainandcompletethechart.3bradioAnItaliancalledGuglielmoMarconi.Developedtheideainthe1890s;firstradiomessageacrosstheAtlanticin1901madetheworldmuchsmallerspreadnewsinsecondsledtootherinventionslikeTVhadabigeffectonmusicRetellthetext!Theinventionistheradio.Itwasinventedby...,anItalianinventor.Theideawasdevelopedinthe...In...,thefirstradiomessagewassentacross...Itchangedtheworldbecause...Listentotheconversationandpayattentiontohowthekeyinformationisstressed.Thenrole-playtheconversation.3cFuXing:Whatdoyouthinkisthemostusefulinventionofalltime,Peter?Peter:Ithastobetheradio.FuXing:Theradio?Why?Peter:Beforetheradiowasinvented,informationtravelledveryslowly.Theworldwasmademuchsmallerbytheradio.Suddenly,newscouldbespreadaroundtheworldinseconds.FuXing:Right.Whowastheinventor?Peter:AnItalianinventorcalledGuglielmoMarconi.Hedevelopedtheideainthe1890s.In1901,aradiomessagewassentacrosstheAtlanticOceanforthefirsttime.FuXing:Wow!Thatwasquiteadistanceatthattime.Peter:Yeah.Andbecauseoftheradio,someotherimportantinventionsweredevelopedaswell.FuXing:Likethetelevision?Peter:That'sright.Italsohadabigeffectonmusic.Theradiomadeitmucheasierforpeopletoenjoymusicfromartistsaroundtheworld.Howtotalkaboutaninvention?FuXing:Whatdoyouthinkisthemostusefulinventionofalltime,Peter?Peter:Ithastobetheradio.FuXing:Theradio?Why?Peter:Beforetheradiowasinvented,informationtravelledveryslowly.Theworldwasmademuchsmallerbytheradio.Suddenly,newscouldbespreadaroundtheworldinseconds.FuXing:Right.Whowastheinventor?Peter:AnItalianinventorcalledGuglielmoMarconi.Hedevelopedtheideainthe1890s.In1901,aradiomessagewassentacrosstheAtlanticOceanforthefirsttime.FuXing:Wow!Thatwasquiteadistanceatthattime.Peter:Yeah.Andbecauseoftheradio,someotherimportantinventionsweredevelopedaswell.FuXing:Likethetelevision?Peter:That'sright.Italsohadabigeffectonmusic.Theradiomadeitmucheasierforpeopletoenjoymusicfromartistsaroundtheworld.invention(what)effect(why/how)inventor(who)inventedtime(when)effect(why/how)FourElementsofDescribinganInvention:What+Who+When+How(effect)Chooseanotherinventionyouthinkisthemostimportantandmakeamindmapaboutit.Thendescribeittoapartner.3dIthink...isthemostusefulinvention.Itwasinventedby...Itwasinventedin...Itchangedtheworldbecause...FourElementsofDescribinganInvention:What+Who+When+How(effect)influenced1..Italsohadabigeffectonmusic..effect/ɪˈfekt/n.效果；作用；影响haveaneffecton对……产生影响；takeeffect生效；comeintoeffect开始实施相关词形：affectv.影响；使改变（动词）effectiveadj.有效的；起作用的effectivelyadv.有效地；实际上effectivenessn.有效性；效用单词核心区别effect侧重事物带来的客观结果、实际效果，名词；固定搭配haveaneffectoninfluence侧重潜移默化、长期的思想/性格层面的熏陶、感化，可作名词/动词impact侧重冲击力强、巨大深远的重大冲击、强烈影响，程度比effect更强辨析：effect,influence和impact一、选用方框中的短语填空（每个限用一次）

wasinventedwasspreadwassenthadabigeffectondevelopedtheidea1.Theradio____________________inthe1890sbyGuglielmoMarconi.

2.Beforetheradio,news____________________veryslowly.

3.In1901,aradiomessage____________________acrosstheAtlanticOceanforthefirsttime.

4.Theradio____________________musicbecauseitmadeiteasiertoenjoysongsfromaroundtheworld.

5.Marconi____________________ofusingradiowavesforcommunication.

wasinventedwasspreadwassenthadabigeffectondevelopedtheidea二.单项填空(

)1.Thefirstairplane______bytheWrightbrothersin1903,whichopenedtheeraofhumanflight.A.inventsB.

invented

C.

isinvented

D.

wasinvented(

)2.Themathcompetitionwasverydifficult,b