高中英语优秀教案Unit 4 Astronomy the science of the stars Period 5 Using language优秀教案 新人教版.docx

高中英语优秀教案Unit 4 Astronomy the science of the stars Period 5 Using language优秀教案 新人教版.docx

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高中英语优秀教案Unit4AstronomythescienceofthestarsPeriod5Usinglanguage优秀教案新人教版

Unit4Astronomy:

thescienceofthestars

Period5　Usinglanguage:

Extensivereading

整体设计

教材分析

Thisisthefifthteachingperiodofthisunit.Asusual,theteachershouldcheckstudents’homeworkandofferchancesforthemtogooverwhattheylearnedinthelastperiodatthebeginningoftheclass.Thenleadinthenewlesson.

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.

教学重点

1.Developstudents’readingskillsbyextensivereading.

2.Letstudentsreadandunderstandthetwopassages.

教学难点

1.Enablestudentstolearntousereadingstrategiessuchasskimming,scanning,andsoon.

2.Getstudentstounderstandthesciencefictionstoriesinthisunit.

三维目标

知识目标

1.Getstudentstolearnsomeusefulnewwordsandexpressionsinthispart:

spaceship,pull,float,mass,cheerup,nowthat,breakout

2.Getstudentstoreadthesciencefictionstories.

能力目标

1.Developstudents’readingskillsbyextensivereadingandenablethemtolearnhowtousedifferentreadingskillstoreaddifferentreadingmaterials.

2.Havestudentslearntousetheusefulnewwordsandexpressionscorrectly.

3.Enablestudentstounderstandthepassagesandknowmoreaboutastronomyandgravity.

情感目标

1.Stimulatestudents’interestinastronomyandspacetravel.

2.Developstudents’senseofgroupcooperationandteamwork.

教学过程

→Step1Revision

1.Checkthehomeworkexercises.

2.Asksomepairsofstudentstocometothefrontandactouttheirdialoguetoreviewtheexpressionsofgivinginstructions.

3.HavesomestudentstalkaboutIsaacNewton,AlbertEinsteinandStephenHawkingaswellastheirideasongravity.

→Step2Warmingup

Letstudentstobrainstormthefollowingquestions:

Whatcountryfirstsentpeopleintospace?

Howmanycountrieshavesucceededinsendingpeopleintospacesofar?

Whofirstlandedonthemoon?

WhoisthefirstChineseastronauttogointospace?

Doyouwanttovisitthemoon?

→Step3Reading

1.AskstudentstoreadthepassageandthendescribethethreewaysinwhichgravitychangedforLiYanpingandhowhisweightchanged.

1）WritedownthethreewaysinwhichgravitychangedforLiYanping.

Thewaygravitychanged

Lefttheearth

Inspace

Onthemoon

Suggestedanswers:

Thewaygravitychanged

Lefttheearth

Thegravitybecameverystrong.

Inspace

Thegravitydisappeared.

Onthemoon

Thegravitybecameverylight.

2）Hisweightchangedthreetimes,too.Nowwritethemdown.

Howhisweightchanged

Lefttheearth

Inspace

Onthemoon

Suggestedanswers:

Howhisweightchanged

Lefttheearth

Hebecameveryheavy.

Inspace

Hehadnoweightandcouldfloataroundlikeafeather.

Onthemoon

Hewasaboutone-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,bepushedinto

→Step4Importantlanguagepoints

1.Beforeweleft,LiYanpingexplainedtomethattheforceofgravitywouldchangethreetimesonourjourneyandthatthefirstchangewouldbethemostpowerful.

在启程以前,李彦平向我解释说,在我们的航行中会有三次引力的改变,而第一次的改变将是最强的。

句子中thattheforceofgravitywouldchangethreetimesonourjourneyandthatthefirstchangewouldbethemostpowerful是两个并列的that引导的宾语从句,作动词explain的宾语。

一个动词若带两个宾语从句,第二个引导词that一般不省略。

例如:

Thegirlstoldhim（that）theywereonatraintripacrossCanadaandthattheyhadonlyonedayinMontreal.

姑娘们告诉他,她们乘火车来旅游,要横穿加拿大,在蒙特利尔待一天。

Iunderstandnotonly（that）youhavestudiedChinesebutalsothatyouhavewrittenChinesepoetry.

我知道,你不仅学了中文,而且还写中文诗。

2.Icheeredupimmediatelyandfloatedweightlesslyaroundinourspaceshipcabinwatchingtheearthbecomesmallerandthemoonlarger.

我立刻感到很高兴,由于失重我在太空舱里飘来飘去,我望着（身后的）地球越来越小,而（前方的）月球越来越大。

watchingtheearthbecomesmallerandthemoonlarger是现在分词短语,在句中作状语。

cheer（sb.）up:

（causesb.to）becomehappierormorecheerful欢呼;喝彩;感到高兴;使高兴

Tryandcheerupabit;lifeisn’tthatbad!

想办法高兴点,生活并不是那么糟！

Thecrowdcheeredupwhentheysawtheteamarrive.

当看到球队的到来,人群欢呼起来。

Hetookhertotheconcerttocheerherup.

他带她去听音乐会来使她高兴。

watch...do/doing观看,注视

Wewatchedthesunsettingbehindthetrees.

我们看着太阳正在树后面落下。

Everydayastheywatchedtheplantgrow,theirheartsfilledwithhope.

每一天当他们看到植物生长,他们的心里都充满了希望。

3.“Ohdear,”Icried,“walkingdoesneedabitofpracticenowthatgravityhaschanged.”

“天哪,”我大声说,“重力改变了,看来走路也的确需要练一练了。

”

now（that）...:

becauseofthefact（that）...既然……;由于……

Now（that）everybodyishere,wecanbeginthemeeting.

既然每个人都到了,我们就可以开始会议。

Now（that）youareabigboyyoumustbehavebetter.

由于你是一个大男孩,你就必须行为表现得更好。

4.Wewatched,amazedasfirebrokeoutontheoutsideofthespaceshipastheearth’sgravityincreased.

我们惊奇地看着,随着地球引力的增加,宇宙飞船的外层燃烧起火。

句子中的asfirebrokeoutontheoutsideofthespaceship和astheearth’sgravityincreased均为as引导的状语从句。

amazed是过去分词,在此处作状语。

Hecameinunnoticed.

他神不知鬼不觉地走了进来。

Manyheroeslieburiedinthechurchyard.

许多英雄埋葬在教堂的墓地里。

breakout:

（ofviolentevents）startsuddenly（指激烈事件,如战争、火灾、疫情等）突然发生;爆发

Firebrokeoutduringthenight.

夜间突然发生了火灾。

Warbrokeoutin1939.

战争爆发于1939年。

Aquarrelbrokeoutsuddenlyatmidnight.

在深夜,突然有人吵架。

→Step5Readingtask

TurntoPage66.

1.Askstudentstoreadthepassageandanswerthetwoquestions.

1）Canablackholebeseen?

Howdoyouknowit’sablackhole?

2）Whathappenedtothespaceshipfromthebeginningtotheend?

Suggestedanswers:

1）No,itcan’tbeseen.Youcanseethingsdisappearintowhatappearstobeemptyspace.

2）Atfirstthelightsonthespaceshipwentoutandthecomputerstoppedworking.Thenthespaceshipjumpedandbegantomovearoundtheedgeoftheoutsideofthehole.

Asthespaceshipmovedaroundthehole,itbegantogofasterandfaster.

Butthenthespaceshipjumpedagain,anditmovedsidewaysfromtheblackhole.Itbegantoincreaseitsspeeduntilitseemedtobegoingasfastaslight.

Atlastthespaceshipsloweddownandthecomputerstartedworkingagain.

2.Letstudentsreadthepassageagainanddothefollowing:

Supposeyouareascientistreadingthispassage.Usethischecklisttodiscoverthenewideasabout“blackholes”.Thenwritethemfortheotherscientiststoreadabout.

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.

Yes

2.Gravitypullsobjectstowardsthem.

Yes

3.Objectsgoroundoutsidetheedgeofthe“blackhole”.

Yes

4.Allobjectsmustgointothe“blackhole”whentheyarecaughtbyitsgravity.

Yes

Theycanbethrownfarfromthe“blackhole”bytheenergyinthe“blackhole”.

→Step6Consolidation

Askstudentstogobacktothetwopassages.Givethemseveralminutestobepreparedtoretellthewholestoryintheirownwords.Thenaskasmanystudentsaspossibletocometothefronttotellthestory.

→Step7Homework

1.FinishofftheWorkbookexercises.

2.Learn