九年级英语上册Unit4AmazingScienceTopic1WhenwasitinventedSectionD课件仁爱版.pptx

Unit4AmazingScienceTopic1Whenwasitinvented?,SectionD,Whatsitusedfor?Itsusedforlisteningtomusic.Whatsitmadeof?Itsmadeofplastic.Wherewasitinvented?ItwasinventedinKorea.Whenwasitinvented?Itwasinventedin1998.,Whatsitusedfor?Itsusedforcommunicatingeasily.Whatsitmadeof?Itsmadeofplasticandmetal.Wherewasitinvented?ItwasinventedinAmerica.Whenwasitinvented?Itwasinventedin1973.,Whatmethoddidyouusetofindyourlostcellphone?,GPSislikeaman-madestar.Wecanuseitatanytime,inanyplaceandinanyweathertofindoutourposition.Theearlyexplorersusedthestarsaslandmarkstoknowwheretheywereandinwhichdirectiontheyweregoing.Thismethodworkedwellatnightaslongastheweatherwasgood.Butitdidntworksowellduringtherestofthetime.,LetsusetheGPS.,n.探险者，勘探者,1.Howdidtheearlyexplorersknowwheretheywere?Theyfoundoutwheretheywerebyusingstars.2.Whatsthedisadvantageofusingthestarsasguidingmarks?Itsdisadvantageisthatitdidntworkwellwhentheweatherwasbadandthestarscouldnotbeseen.3.WhatisaGPS?Isitusefultouse?Itislikeaman-madestar.Wecanuseitatanytime,inanyplaceandinanyweathertofindoutourposition.Itisveryuseful.4.WhatdoyouthinktheGPSwillbeusedforinthefuture?,ReadthepassageanddiscussthequestionsonPage88.,Keywords,exploreexplorer,markfindout,indirectionworkwell,aslongastherestofthetimesolve,like,use,theshapeofgreatinvention,n.标示，记号，符号v.做记号，做标记,Retellit!,根据首字母提示，完成短文。ThankstoGPS,wecanexactlyknoww_wearenow.GPSislikeaman-made“star”.Itcanbeu_inanyplaceandanyweatherconditiontofindoutourp_.Inthepast,theearlyexplorershadtousestarsinthes_totellthemwheretheywere,however,thismethoddidntworkwellwhentheweatherwasbad.SoGPSisagreatinventionthatcanhelphumanstobettere_ourplanets.,here,osition,sed,ky,xplore,Exercise,Grammar,PassiveVoice(),TheradiowasinventedbyGuglielmoMarconiin1895.,Whenwasthedigitalcameradeveloped?Wherewasitdeveloped?Whatisarocketusedfor?,Itwasdevelopedinthe1970s.ItwasdevelopedinJapan.Itisusedforsendingsatellitesorspaceshipsintospace.,Functions,Passivevoicewas/were+done()1.Abigsupermarket_inourcitylastyear.A.isbuiltB.werebuiltC.wasbuilt()2.Couldyoutellmewhotheradio_by?A.inventsB.inventedC.wasinvented()3.Manytreesandflowers_inourschoollastyear.Theymadeourschoolmorebeautiful.A.haveplantedB.wereplantedC.planted()4.Thechildren_swimlastmonthandtheycanswimverywellnow.A.aretaughtB.weretaughtC.weretaughtto()5.Itissaidthatpotatochips_bymistakeaboutonehundredyearsago.A.wereinventedB.inventedC.areinvented,C,B,C,A,C,Grammarexercise,1.Youarelate,allthetickets_(sell)outanhourago.2.Thistypeofcellphone_(make)inShenzhen.3.I_(notinvite)toyesterdaysparty.4._thosemachines_(check)thismorning?5.Manytreesandflowers_(plant)inourschoollastyear,andtheymadeourschoolabeautifulgarden.,weresold,weremade,were/was+v.的过去分词,Exercises,wasntinvited,Were,checked,wereplanted,1.PeopleuseradiostolearnEnglishinthepast._2.Jackwillshowmethephoto._3.TheyhaveraisedmuchmoneyfortheProjectHope._4.IoftenhearMarysingEnglishsongsathome._5.Wemustntthrowlitterabout._6.PeoplecanvisitplanetslikeMars._,RadioswereusedtolearnEnglishinthepast.,Thephotowillbeshowntome.,MuchmoneyhasbeenraisedfortheProjectHope.,MaryisoftenheardtosingEnglishsongsathome.,Littermustntbethrownabout.,PlanetslikeMarscanbevisited.,ChangethefollowingsentencesintoPassiveVoice.,()1.Hurryup,you_onthephone.A.WantedB.waswantedC.arewanted()2.Somestories_thechildrenbytheteachereveryday.A.istoldforB.aretoldforC.aretoldto()3._thathehasstudiedabroadforfiveyears.A.ItissaidB.ItsaysC.Thatissaid()4.Thewindow_fiveminutesago.A.iscleanedB.wascleanedC.canbecleaned()5.Thechildren_bytheteachersatschool.A.takecareofB.aretakencareC.aretakencareof,C,C,A,B,C,Choosethebestanswer.,()6.Ihavenoideawhat_whileIwasasleep.A.happenedB.washappenedC.happens()7.Insomecountries,tea_beforemeals.A.isservingB.isservedC.served()8.Thiskindofbooks_well.A.doesntsellB.isntsellingC.arentsold.()9.I_tenminutestodecidewhichsentencewasrightbytheteacher.A.gaveB.wasgivenC.wasgiving()10.Teachers_ineverypartoftheworld.A.areneedingB.areneededC.willneed,A,B,A,B,B,Practicemakesperfect.,Project(1),ThisisKangkangsinvention.Lookattheinformationandthepicture.Whatdoyouthinkofit?Discusswithyourpartners.,2.Designyourowninvention.Drawapictureofitandwritedowntheinformationaboutit.,Project（2）DescribingYourInvention,3.Showthepictureofyourinventionanddescribeittotheclass.4.Discussingroupstodecidewhichisthemostuseful/interesting/funnyinvention.,WeLearn:1.Somewords:mark,explorer2.Somephrases:findout,in,direction,aslongas,workwell,therestofthetime,beusedto,theshapeof3.Somesentences:Thismethodworkedwellatnightaslongastheweatherwasgoodandthestarscouldbeseen.Wecan:1.Usethepassivevoiceofthesimplepasttensemoreproperly.2.Talkab