unit4教案3

Unit4Astronomy:thescienceofstarsPeriod1Warmingup&Pre-readingTeachingaims:1.Learnthenewwords.2.TalkaboutthescienceofstarsStep1WordsLearnthenewwordsofthisunit.Step2Warmingup&leadin1.TalkaboutsciencesubjectsT:Goodmorning/afternoon,everyone.Whatclassdoyouhavetoday?S1:Maths,English,Chinese,physics,history,andgeology.T:Whatothersubjectsdoyouhaveinschool?S2:puter,chemistry,biology,music,PE,andpolitics.T:Whichisyourfavourite?Why?S3:Myfavouriteoneis…becauseit’sveryinteresting/exciting/instructive/…S4:Ilike…bestbecause…2.TalkaboutuniverseandsolarsystemT:Let’sfollowthisastronomertolearnaboutuniverse.Howdidtheuniverseeintobeing?S1:Afterthe“BigBang”,theuniversecameintobeing.T:Doyouknowthesolarsystemintheuniverse?Whatisitmadeupof?S2:Thesolarsystemcontainseightplasandmanyetsandotherobjects.T:Canyounametheeightplas?S3:TheSun,Mercury,Venus,Earth,Mars,Jupiter,Saturn,Uranus,andNeptune.T:Whichpladoweliveon?Canyoudescribewhatitlookslike?S4:Earth.Itsupportsavarietyoflifeand70%oftheearthiscoveredwithseasoroceans.T:Whydoeslifeonlyexistontheearth?S5:Becausethereisairandwaterontheearth.Step3Pre-readingGetthestudentstodiscussthequestionsonpage25withtheirpartners.Thenaskthestudentstotelltheirstories.Encouragethemtotelldifferentstories,Iftheydon’tknowany,tellthemsome.Readsomestoriestothestudents.Panguseparatestheskyfromtheearth;TheBiblicalAccount;India;Japan;Europe;Letthemdiscussingroups.Step4Homework1.Reviewthewordsofthisunit.Previewthepas真的不掉线吗？？、？？？？？？？？？？？？2.sageof“Reading”.3.Dopage27Ex.3.Unit4Astronomy:thescienceofstarsPeriod2ReadingandprehendingTeachingAims:EnabletheSstosaysomethingaboutastronomyHelpthestudentstoformagoodhabitofreadingCultivatetheSs'awarenessofprotectingtheearth.TeachingImportance:HowtoimprovetheSs'abilitytounderstandhowlifebeganontheearthTeachingMethods:Task--basedmethodTeachingProcedure:Step1.Warmingup1.Freetalk2.ReviewthewordsofUnit4byplayingchessontheblackboard.Step2Leading-in1.Talkaboutsomepictures.2.WatchavideoandthenasktheSstoputthepicturesonthescreenintoarightorder.Step3ReadingTask1SkimmingReadthepassagequicklyandjointhemainideaforeachparagraph.Para.1a)ThearrivalofhumansandtheirimpactontheearthPara.2b)ThedevelopmentofplantsandanimalsontheearthPara.3c)AwidelyacceptedtheoryabouttheformationoftheuniversePara.4d)TheimportanceofwaterforlifePara.5e)TheformationoftheearthTask2Scanning真的不掉线吗？？、？？？？？？？？？？？？Readthepassagecarefullyandthenfillintheblankswithdifferentkindsoflivingthings.Fillintheblankswithdifferentkindsoflivingthings.1________________2____________________3________________4__________5__________6_________7__________8__________9__________SmallplantsinwatershellfishandallsortsoffishgreenplantsonlandinsectsamphibiansforestsreptilesdinosaursmammalsplantsanimalsTask3CarefulReading:Finishthesummaryaccordingtothetext:Afterthe“bigbang”,theearthwasstilljustacloudof_______,it_______loudlywithfireandrock,whichwere_____toproducethe_________,carbondioxideandothergases.Then________grew.Theymultipliedandfilledtheoceansandseaswith_____.Manymillionsofyearslaterthefirst________begantoappearonland.Whentheplantsgrewtoforest,_____appearedforthefirsttime.Theyproducedyounggenerallyby__________.Whendinosaursdisappeared,________becamemoreimportant.Task4PostReadingDiscussingroups.1.Whatproblemshavebeencausedbyhumanstotheearth?2.Howtoprotecttheearthandmakeitabetterplacetoliveon?Step4Homework1.SearchtheInterfortheimformationofthedevelopmentoflife.2.Readthepassagecarefullyandtrytofindoutkeypoints.Period3Reading(2)Teachinggoals:1.Learntheusageofsomedifficultwordsandexpressions.2.Trainthestudents’abilitytoremovethedifficultieswhilereading.Teachingimportantpoints:Trainthestudents’abilitytocooperatewithothers.Step1Revision1.Checkupthehomework.2.Haveaquizofthewords.Step2.Languagepoints1.Itexplodedloudlywithfireandrock,whichwereintimetoproducethewatervapour.Whichleadsnon-restrictiveattributiveclause.intime:soonerorlater;eventuallyIwillseehimintime.Intime(forsth/todosth):notlateShewillbebackintimetopreparedinner.In/outoftime:in/notinthecorrecttime2.Whetherlifewillcontinueontheearthformillionsofyearstoewilldependonwhetherthisproblemcanbesolved.Toe:servesasattributiveSheisthelastpersontodosuchathing.Dependon:somethingmightonlyhappenorbetrueifthecircumstancesarerightforitOursuccessdependsonwhethereveryoneworkshardornot.3.…bylayingeggs.lay-laid-laid-laying放,把......放在......;产卵真的不掉线吗？？、？？？？？？？？？？？？Helaidhisbooksonthedesk.4.givebirthto1)生（孩子）She’sjustgivenbirthtoahealthybabygirl.她刚刚生了个健康的女婴。2)产生Theextraordinaryexperiencegavebirthtohislatestnovel.这段奇特的经历促成了他的最新的一部小说的诞生。5.Theyareputtingtoomuchcarbondioxideintotheatmosphere,whichpreventsheatfromescapingfromtheearthintospace.preventsth./sb.(from)doingsth.制止(防止)某人(某物)做某事Nothingcanpreventthisplanfrombeingcarriedout.6.…theearthmaybeetoohottoliveon.地球可能会因此变得太热而不适合生物的生存。Thequestionistoohardtounderstand.Step3Homework1.RecitePara5ofthispassage.2.DoEx.1and3onpage63.3.Previewthegrammarofthisunit.Period4GrammarTeachingAims:TolearnaboutNounClausesastheSubjectTodiscoverusefulstructures.Step1RevisionCheckuptheho