滬教牛津版八年級英語上冊課件Unit 4 period 2

教學課件

英語八年級上冊滬教牛津版Module2ScienceandtechnologyUnit4InventionsPeriod2Period2

Reading(II)學習目標：1理解和運用短語intheearly19thcentury,beableto,acrosstheworld,allow…todo…,keepintouchwith等。2

能利用所給提示（如圖片、關鍵詞等）描述一件發明。3

能通過圖表理清文章結構，歸納文章大意。4

深入了解偉大發明如何改變人類的生活。RevisionWhatinventionsaredescribedinthefollowingsentences?Wecanuseittocommunicatewithpeopleoverlongdistances.Wecanmakephonecallswithitanytime,anywhere.3Itisperhapsoneofthemostpracticalinventionsinthe20thcentury.Nowpeopleuseitforbothworkandplay.telephone/mobilephonemobilephonecomputerlift4Afteritsinvention,wenolongerneededtousethestairs.airplane/aircraftairconditionertheunderground5Itcoolsorwarmsroomstomakethemmorecomfortableforpeopletostayin.6Passengerswhousethisfortransportationnolongerneedtoworryabouttrafficjams.7TheWrightbrothersinventedthefirstmachine-poweredmodelofit.Whatinventionsaredescribedinthefollowingsentences?InventorTimeofinventionLifeafteritsinventionExamples:ThewheelReadthefirstpartofthearticleandcompletethetable.Don’tknow.Afewthousandyearsago.Travellingbecamefasterandmorecomfortable.carriagestrainscarsWhileyoureadInventorTimeofinventionLifeafteritsinventionPeoplecan____________________________________.

Peoplecan_____________________________________________________________.Thetelephoneoverlongdistancesspeaktoeachothermobilephoneskeepintouchwitheachotheranytime,anywherewithReadthesecondpartofthearticleandcompletethetable.AlexanderGrahamBell.In1876.Readthethirdpartofthearticleandanswerthesequestions.Thelightbulb1Whatdidpeopleusetoseeatnightbeforetheinventionofthelightbulb?Peopleusedoillamps,gaslampsorcandles.2Whathaslifebeenlikeaftertheinventionofthelightbulb?Peoplecandoasmanythingsintheeveningsastheycaninthedaytime.ThewheelThewheelisperhapsthegreatestinventioninhistory.Afteritsinvention,travellingbecamefasterandmorecomfortable.Afewthousandyearsago,peoplestartedtousewheelsoncarriages.Intheearly19thcentury,thefirsttrainsbegantocarrypassengers.Atthestartofthe20thcentury,carsbecamepopular.Withoutthewheel,wewouldnothavetheseinventions.GreatinventionsGreatinventionschangetheworld.Theyhelppeopleliveabetterlife.Thefollowingarethreeofthemostimportantinventionsinhistory.ThetelephoneAlexanderGrahamBellinventedoneofthefirstpracticaltelephonesin1876.Sincethen,peoplehavebeenabletospeaktoeachotheroverlongdistances.Todaymillionsofpeopleacrosstheworldownmobilephones.Theyallowpeopleto

keepintouchwitheachotheranytime,anywhere.ThelightbulbThomasEdisondevelopedthefirstpracticallightbulbin1879.Beforetheinventionofthelightbulb,peoplehadtouseoillamps,gaslampsorcandlestoseeatnight.Withlightbulbs,peoplecandoasmanythingsintheeveningsastheycaninthedaytime.Canyouimaginelivingwithoutthem?D1Readthearticleonpage51andcompletethetablebelow.fasterandmorecomfortableAlexanderGrahamBellspeaktoeachotheroverlongdistancesThomasEdisondoasmanythingsintheeveningsComprehensionHowdidpeopleseeatnightbeforetheinventionofthelightbulb?WhichofthethreethingswasinventedfirstD2Readthearticleagainandanswerthequestionsbelowincompletesentences.Thewheelwasinventedfirst.Theyallowpeopletokeepintouchwitheachotheranytime,anywhere.Theyhadtouseoillamps,gaslampsorcandlestoseeatnight.Whatinventionsdidthewheelmakepossible?HowdomobilephoneshelppeoplekeepintouchwitheachotherItmadetheinventionsofcarriages,trainsandcarspossible.1946,ENIAC,thefirstcomputer1981,IBM,thefirstPCNow,laptops,tabletsThecomputerTalkabouttheinventionofthecomputerusingtheinformationbelow.TalkaboutthecomputerThecomputerisperhapsthegreatestinventionofthe20thcentury.In…,…Afteritsinvention,…Sincethen,…Beforetheinventionof…,…With…,people…Today,…Canyouimaginelifewithoutcomputers?Usefulwords/express