【文档说明】Unit4__Topic1__SectionD__精品课件-九年级上册英语【仁爱版】.ppt，共(19)页，839.500 KB，由小喜鸽上传

转载请保留链接：https://www.ichengzhen.cn/view-104633.html

以下为本文档部分文字说明：

Unit4AmazingScienceTopic1Whenwasitinvented?SectionD•What’situsedfor?•It’susedforlisteningtomusic.•What’sitmadeof?•It’smadeofplastic

.•Wherewasitinvented?•ItwasinventedinKorea.•Whenwasitinvented?•Itwasinventedin1998.•What’situsedfor?•It’susedforcommunicatingeasily.•Wh

at’sitmadeof?•It’smadeofplasticandmetal.•Wherewasitinvented?•ItwasinventedinAmerica.•Whenwasitinvented?•Itwasinventedin1973.What

methoddidyouusetofindyourlostcellphone?•GPSislikeaman-madestar.Wecanuseitatanytime,inanyplaceandinanyweathertofin

doutourposition.Theearlyexplorersusedthestarsaslandmarkstoknowwheretheywereandinwhichdirectiontheyweregoing.Thismethodw

orkedwellatnightaslongastheweatherwasgood.Butitdidn’tworksowellduringtherestofthetime.Let’susetheGPS.n.探险者，勘探者•1.Howdidtheearlyexplorersknoww

heretheywere?•Theyfoundoutwheretheywerebyusingstars.•2.What’sthedisadvantageofusingthestarsasguidingmarks?•Itsdisadva

ntageisthatitdidn’tworkwellwhentheweatherwasbadandthestarscouldnotbeseen.•3.WhatisaGPS?Isitusefultouse?•Itislikeaman-madestar.Wecanus

eitatanytime,inanyplaceandinanyweathertofindoutourposition.Itisveryuseful.•4.WhatdoyouthinktheGPSwillbeusedforin

thefuture?•…ReadthepassageanddiscussthequestionsonPage88.Keywords•explore•explorer,mark•findout,in…direction•workwell,aslon

gas•therestofthetime•solve,like,use,theshapeof•greatinventionn.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.GPS

islikeaman-made“star”.Itcanbeu____inanyplaceandanyweatherconditiontofindoutourp________.Inthepast,theearlyexplorershadtousestarsinthes_

___totellthemwheretheywere,however,thismethoddidn’tworkwellwhentheweatherwasbad.SoGPSisagreatinventionthatcan

helphumanstobettere________ourplanets.hereositionsedkyxploreGrammarPassiveVoice(Ⅱ)TheradiowasinventedbyGuglielmoMarconiin1895.Whenwasthedigitalcam

eradeveloped?Wherewasitdeveloped?Whatisarocketusedfor?Itwasdevelopedinthe1970s.ItwasdevelopedinJapan.Itisusedforsendingsatellitesorspaceshipsinto

space.FunctionsIwishIcouldgointospacesomeday.Ihopeyourdreamwillcometrue.It’ssaidthatheinventedmorethantwothousandt

hingsduringhislife.Inventingisinterestingandexcitingandeveryonecanbeaninventor.Passivevoicewas/were+done()1.Abigsupermarket__

___inourcitylastyear.A.isbuiltB.werebuiltC.wasbuilt()2.Couldyoutellmewhotheradio____by?A.inventsB.inventedC.wasinvente

d()3.Manytreesandflowers_____inourschoollastyear.Theymadeourschoolmorebeautiful.A.haveplantedB.wereplantedC.planted()4.T

hechildren____swimlastmonthandtheycanswimverywellnow.A.aretaughtB.weretaughtC.weretaughtto()5.Itissa

idthatpotatochips_____bymistakeaboutonehundredyearsago.A.wereinventedB.inventedC.areinventedCBCACGrammarexercis

e1.Youarelate,allthetickets__________(sell)outanhourago.2.Thistypeofcellphone____________(make)inShenzhen.3.I_________________(notinvite)toyester

day’sparty.4.________thosemachines__________(check)thismorning?5.Manytreesandflowers______________(plant)inourschoollastyear,andtheyma

deourschoolabeautifulgarden.weresoldweremadewere/was+v.的过去分词wasn’tinvitedWerecheckedwereplanted1.PeopleuseradiostolearnEnglishint

hepast._____________________________________________2.Jackwillshowmethephoto.______________________________________________

3.TheyhaveraisedmuchmoneyfortheProjectHope.______________________________________________4.IoftenhearMarysingEnglish

songsathome._______________________________________________5.Wemustn’tthrowlitterabout._____________

___________________________________6.PeoplecanvisitplanetslikeMars._________________________________________________Radi

oswereusedtolearnEnglishinthepast.Thephotowillbeshowntome.MuchmoneyhasbeenraisedfortheProjectHope.MaryisoftenheardtosingEngli

shsongsathome.Littermustn’tbethrownabout.PlanetslikeMarscanbevisited.ChangethefollowingsentencesintoPassiveVoice.()1.Hurryup,you____onthephone

.A.WantedB.waswantedC.arewanted()2.Somestories_____thechildrenbytheteachereveryday.A.istoldforB.aretoldforC.aretoldto()3._____that

hehasstudiedabroadforfiveyears.A.ItissaidB.ItsaysC.Thatissaid()4.Thewindow____fiveminutesago.A.iscleanedB.wasclean

edC.canbecleaned()5.Thechildren______bytheteachersatschool.A.takecareofB.aretakencareC.aretakencareofCCABCChoosethebestanswer.()6.Ihaven

oideawhat______whileIwasasleep.A.happenedB.washappenedC.happens()7.Insomecountries,tea_____beforemeals.A.isservingB

.isservedC.served()8.Thiskindofbooks______well.A.doesn’tsellB.isn’tsellingC.aren’tsold.()9.I______tenminutestode

cidewhichsentencewasrightbytheteacher.A.gaveB.wasgivenC.wasgiving()10.Teachers______ineverypartoftheworld.A.areneedingB.ar

eneededC.willneedABABBProject(1)ThisisKangkang’sinvention.Lookattheinformationandthepicture.Whatdoyouthi

nkofit?Discusswithyourpartners.Name:Plar(plan-car)Inventor:KangkangYear:2014Use:Bothflyinganddriving2.Designyourowninvention.

Drawapictureofitandwritedowntheinformationaboutit.Name:____________Inventor:___________Year:_____________Use:______________Project（2）Des

cribingYourInvention3.Showthepictureofyourinventionanddescribeittotheclass.4.Discussingroupstodecidewhichisthemostuseful/interesting/funnyinvent

ion.WeLearn:1.Somewords:mark,explorer2.Somephrases:findout,in…,direction,aslongas,workwell,therestofthetime,beuse

dto,theshapeof3.Somesentences:Thismethodworkedwellatnightaslongastheweatherwasgoodandthestarscouldbese

en.Wecan:1.Usethepassivevoiceofthesimplepasttensemoreproperly.2.TalkaboutnewtechnologyGPS.3.Developeourimaginationandcreativitybydesigningourowninven

tions.•Read1a.•Memorizetheusefulexpressionsandkeysentencesthatwelearninthistopic.•FinishSectionDinyour

workbook.•PreviewSectionAofTopic2.