2017年高一英語人教版必修3教案：Unit4UsingLanguage：Extensivereading+Word版含解析

教學(xué)設(shè)計UsingLanguage：Extensivereading整體設(shè)計教材分析Inthisperiod，theteachingemphasiswillbeputondevelopingstudents'readingabilitybyreadingextensively.Wewilldealwithtwoparts：AVISITTOTHEMOONinUsingLanguageonPages30-31andCAUGHTBYABLACKHOLEinReadingTaskonPage66.Whilereading，getstudentslearningtousesomereadingstrategiessuchasskimming，scanning，andsoon.Astonewwordsandphrases，theteachercanfirstfindthosestudentsfeelmostdifficultandhelpthemtounderstand.That'senoughhere.ThereadingpassageAVISITTOTHEMOONisasciencefictionstorywhichimagineswhatitmightbelikeifanastronautvisitedthemoon.Thepurposeofsciencefictionwritingistocombinefactswithastorytomakestudentsinterestedandexcitedabouttravelinspace.Itisalsotostimulateaweandwonderintothevastnessofspace.Asthisreadingusestheinformationstudentshavegainedfromthelistening，theteachercanfirstasksomestudentstoretellthelisteningtexttoleadinthetopicandthenaskstudentstoreadthepassageanddosomecomprehendingexercises.Whilecheckingtheiranswerswiththewholeclass，dealwithlanguageproblemsstudentscan'tworkoutbythemselves.Thisisanextensivereadinglesson，sotheteachingstepsshouldbesimple.AstothepassageCAUGHTBYABLACKHOLE，itistocontinuetheabovestory.Theastronomersinthestoryvisitaplaceinspace，whichseemsimpossibleforpeopletoreach，the“blackhole”．Itistohelpstudentsimaginewhatitislikeneara“blackhole”．Askstudentstoreadthroughthepassageandtrytoknowmoreaboutastronomyandgravity.Attheendoftheclass，askstudentstoretellthetwopassages.Inordertoarousestudents'interest，theteachercanholdacompetitionamongthem.教學(xué)重點1．Developstudents'readingskillsbyextensivereading.2．Letstudentsreadandunderstandthetwopassages.教學(xué)難點1．Enablestudentstolearntousereadingstrategiessuchasskimming，scanning，andsoon.2．Getstudentstounderstandthesciencefictionstoriesinthisunit.三維目標(biāo)知識目標(biāo)1．Getstudentstolearnsomeusefulnewwordsandexpressionsinthispart：spaceship，pull，float，mass，cheerup，nowthat，breakout2．Getstudentstoreadthesciencefictionstories.能力目標(biāo)1．Developstudents'readingskillsbyextensivereadingandenablethemtolearnhowtousedifferentreadingskillstoreaddifferentreadingmaterials.2．Havestudentslearntousetheusefulnewwordsandexpressionscorrectly.3．Enablestudentstounderstandthepassagesandknowmoreaboutastronomyandgravity.情感目標(biāo)1．Stimulatestudents'interestinastronomyandspacetravel.2．Developstudents'senseofgroupcooperationandteamwork.教學(xué)過程Step1Revision1．Checkthehomeworkexercises.2．Asksomepairsofstudentstocometothefrontandactouttheirdialoguestoreviewtheexpressionsofgivinginstructions.3．HavesomestudentstalkaboutIsaacNewton，AlbertEinsteinandStephenHawkingaswellastheirideasongravity.Step2WarmingupLetstudentsbrainstormthefollowingquestions：Whatcountryfirstsentpeopleintospace?Howmanycountrieshavesucceededinsendingpeopleintospacesofar?Whofirstlandedonthemoon?WhoisthefirstChineseastronauttogointospace?Doyouwanttovisitthemoon?Step3Reading1．AskstudentstoreadthepassageandthendescribethethreewaysinwhichgravitychangedforLiYanpingandhowhisweightchanged.1）WritedownthethreewaysinwhichgravitychangedforLiYanping.ThewaygravitychangedLefttheearthInspaceOnthemoonSuggestedanswers：ThewaygravitychangedLefttheearthThegravitybecameverystrong.InspaceThegravitydisappeared.OnthemoonThegravitybecameverylight.2）Hisweightchangedthreetimes，too.Nowwritethemdown.HowhisweightchangedLefttheearthInspaceOnthemoonSuggestedanswers：HowhisweightchangedLefttheearthHebecameveryheavy.InspaceHehadnoweightandcouldfloataroundlikeafeather.OnthemoonHewasaboutone-sixthofhisweightontheearth.2．Askstudentstoreadthepassagealoudtothetapeandunderlinealltheusefulexpressionsorcollocationsinthepassage.Letstudentsreadthemaloudandcopythemdownintheirexercisebookafterclassashomework.Trytokeeptheminmind.Collocations：beluckyenoughtodo，haveachance，makeatripintospace，explainsth.tosb.，theforceofgravity，beoff，thepulloftheearth'sgravity，fallbacktotheearth，falltotheground，toofarfromtheearth，asif，atall，getcloseto，cheerup，comeon，lessthan，downthesteps，stepforward，twiceasfaras，fallover，abitof，nowthat，afterawhile，getthehangof，breakout，ontheoutsideof，bepushedintoStep4Importantlanguagepoints1．Beforeweleft，LiYanpingexplainedtomethattheforceofgravitywouldchangethreetimesonourjourneyandthatthefirstchangewouldbethemostpowerful.在啟程以前，李彥平向我解釋說，在我們的航行中會有三次引力的改變，而第一次的改變將是最強的。句子中thattheforceofgravitywouldchangethreetimesonourjourneyandthatthefirstchangewouldbethemostpowerful是兩個并列的that引導(dǎo)的賓語從句，作動詞explain的賓語。一個動詞若帶兩個賓語從句，第二個引導(dǎo)詞that一般不省略。例如：Thegirlstoldhim（that）theywereonatraintripacrossCanadaandthattheyhadonlyonedayinMontreal.姑娘們告訴他，她們乘火車來旅游，要橫穿加拿大，在蒙特利爾待一天。Iunderstandnotonly（that）youhavestudiedChinesebutalsothatyouhavewrittenChinesepoetry.我知道，你不僅學(xué)了中文，而且還寫中文詩。2．Icheeredupimmediatelyandfloatedweightlesslyaroundinourspaceshipcabinwatchingtheearthbecomesmallerandthemoonlarger.我立刻感到很高興，由于失重我在太空艙里飄來飄去，我望著（身后的）地球越來越小，而（前方的）月球越來越大。watchingtheearthbecomesmallerandthemoonlarger是現(xiàn)在分詞短語，在句中作狀語。cheer（sb.）up：（causesb.to）becomehappierormorecheerful歡呼；喝彩；感到高興；使高興Tryandcheerupabit；lifeisn'tthatbad!想辦法高興點，生活并不是那么糟！Thecrowdcheeredupwhentheysawtheteamarrive.看到球隊的到來，人群歡呼起來。Hetookhertotheconcerttocheerherup.他帶她去聽音樂會來使她高興。watch…do/doing觀看，注視Wewatchedthesunsettingbehindthetrees.我們看著太陽正在樹后面落下。Everydayastheywatchedtheplantgrow，theirheartsfilledwithhope.每一天當(dāng)他們看到植物生長，他們的心里都充滿了希望。3．“Ohdear，”Icried，“walkingdoesneedabitofpracticenowthatgravityhaschanged.”“天哪，”我大聲說，“重力改變了，看來走路也的確需要練一練了?！眓ow（that）…：becauseofthefact（that）…既然……；由于……Now（that）everybodyishere，wecanbeginthemeeting.既然每個人都到了，我們就可以開始會議。Now（that）youareabigboyyoumustbehavebetter.由于你是一個大男孩，你就必須行為表現(xiàn)得更好。4．Wewatched，amazedasfirebrokeoutontheoutsideofthespaceshipastheearth'sgravityincreased.我們驚奇地看著，隨著地球引力的增加，宇宙飛船的外層燃燒起火。句子中的asfirebrokeoutontheoutsideofthespaceship和astheearth'sgravityincreased均為as引導(dǎo)的狀語從句。amazed是過去分詞，在此處作狀語。Hecameinunnoticed.他神不知鬼不覺地走了進來。Manyheroeslieburiedinthechurchyard.許多英雄埋葬在教堂的墓地里。breakout：（ofviolentevents）startsuddenly（指激烈事件，如戰(zhàn)爭、火災(zāi)、疫情等）突然發(fā)生；爆發(fā)Firebrokeoutduringthenight.夜間突然發(fā)生了火災(zāi)。Warbrokeoutin1939.戰(zhàn)爭爆發(fā)于1939年。Aquarrelbrokeoutsuddenlyatmidnight.在深夜，突然有人吵架。Step5ReadingTaskTurntoPage66.1．Askstudentstoreadthepassageandanswerthetwoquestions.1）Canablackholebeseen？Howdoyouknowit'sablackhole?2）Whathappenedtothespaceshipfromthebeginningtotheend?Suggestedanswers：1）No，itcan'tbeseen.Youcanseethingsdisappearintowhatappearstobeemptyspace.2）Atfirstthelightsonthespaceshipwentoutandthecomputerstoppedworking.Thenthespaceshipjumpedandbegantomovearoundtheedgeoftheoutsideofthehole.Asthespaceshipmovedaroundthehole，itbegantogofasterandfaster.Butthenthespaceshipjumpedagain，itmovedsidewaysfromtheblackhole.Itbegantoincreaseitsspeeduntilitseemedtobegoingasfastaslight.Atlastthespaceshipsloweddownandthecomputerstartedworkingagain.2．Letstudentsreadthepassageagainanddothefollowing：Supposeyouareascientistreadingthispassage.Usethischecklisttodiscoverthenewideasabout“blackholes”．Thenwritethemdownfortheotherscientiststoreadabout.Oldideasabout“blackholes”Wasthiswhatwefound？Newideasabout“blackholes”1．Blackholescannotbeseen.2．Gravitypullsobjectstowardsthem.3．Objectsgoroundoutsidetheedgeofthe“blackhole”．4．Allobjectsmustgointothe“blackhole”whentheyarecaughtbyitsgravity.3．Severalminuteslater，showtheanswersonthescreenandcheckthemwiththewholeclass.Atthesametime，dealwithanydifficultlanguagepointsthatstudentscan'tunderstand.Suggestedanswers：Oldideasabout“blackholes”Wasthiswhatwefound？Newideasabout“blackholes”1．Blackholescannotbeseen.Yes2．Gravitypullsobjectstowardsthem.Yes3．Objectsgoroundoutsidetheedgeofthe“blackhole”．Yes4．Allobjectsmustgointothe“blackhole”whentheyarecaughtbyitsgravity.NoTheycanbethrownfarfromthe“blackhole”bytheenergyinthe“blackhole”.Step6ConsolidationAskstudentstogobacktothetwopassages.Givethemseveralminutestobepreparedtoretellthewholestoryintheirownwords.Thenaskasmanystudentsaspossibletocometothefronttotellthestory.Step7Homework1．FinishofftheWorkbookexercises.2．Learntheusefulnewwordsandexpressionsinthispartbyheart.3．Tellthestorytoyourfriendsorfamily.板書設(shè)計Unit4Astronomy：thescienceofthestarsExtensivereadingAVISITTOTHEMOON1）WritedownthethreewaysinwhichgravitychangedforLiYanping.ThewaygravitychangedLefttheearthThegravitybecameverystrong.InspaceThegravitydisappeared.OnthemoonThegravitybecameverylight.2）Hisweightchangedthreetimes，too.Nowwritethemdown.HowhisweightchangedLefttheearthHebecameveryheavy.InspaceHehadnoweightandcouldfloataroundlikeafeather.OnthemoonHewasaboutone-sixthofhisweightontheearth.備課資料FurtherreadingAstrobiologyandtheOriginsofLifeAstrobiologyisanewfieldthatdiscussestheorigins，thedistributionandthefutureoflifeintheuniverse.TwobreakthroughsofimportancetoastrobiologyareevidenceforthepossibilityoftheexistenceoflifeinthepastonMarsandthediscoveryofplanetsaroundnearbystars.SpeculationandearlyexperimentsontheoriginsoflifefromCharlesDarwin，AlexanderOparin，H.B.S.HaldanecontributedtoabreakthroughexperimentbyStanleyMiller.Millertooknon-livingmaterialthatwasontheearlyEarth—hydrogen，methane，ammonia，andwater—providedanenergysourceandproducedaminoacids.Inthe44yearssinceMiller'sexperiment，scientistssuchasJuanOrowinandTomScheckhaveproducednuclearacidbasesandribenzymesbutnoself-replicatinglifeororganismorcellhasyetbeenproducedinthelaboratory.Whatdoweknowaboutthetimelinefororiginsoflifeontheearth？Earthformedfromtheaccretionofplanetestimatesabout4.6billionyearsago.Currentestimatesarethatittook200millionyears，ortoabout4.4billionyearsago，untiltheEarthhadasolidcrust，hadwaterandwasahabitableenvironmentforlife.Theoldestrocksarenowplacedatabout3.96billionyearsandtheoldestfossilsarefrom3.5billionyears.Fourhundredmillionyearsofgeologicalrecordaremissing.Thiscouldbetheoriginoflifewindow.Theoldestfossilsareabout3.5billionyears；however，inrocksdated3.8billionyears，analysesofisotopesofcarbonsuggestthatcarbonfixationandmaybeevenphotosynthesiswasaroundthen.Sonowwehaveevidenceoflifeat3.8billionyearsago，somerocksat3.96billionandhabitabilitymaybeasfarbackas4.4billion.ThinkoftheprimitiveEarthcrust—heat，volcanicactivity，radioactivity，energyform，water—as