高中英语新人教版必修3 Unit4 Astronomy ：the science of starsVIP免费

Unit4Astronomy:thescienceofstarsTeachingaims:1.Talkaboutthescienceofstars2.PractisegivinginstructionsLearntousenounclausesasthesubjectLearntowriteanessaytoshowyourproblemsandthewaytoovercomethem.Vocabulary:astronomy,atmosphere,violent,explode,surface,disappointed,gradually,cheer,mass,harmful,presence,intime,prevent…from…dependon,nowthat,getthehangof,breakoutThefirstperiodIntensivereadingStepⅠPresentationT:Hello,everyone!TodaywewillcometoUnit4,Astronomy.BeforethatIhaveaquestion:wheredowecomefrom?Orwecansay:Whoareourancestors?S1:Monkeys!S2:BeijingRenwholivedmanyyearsago.S3:dinosaurs…T:Verygood!Doyouknowwhatitwaslikebeforelifeappearedonearth?S4:Fullofwater…Bs:Idon’tknow.T:Doyouwanttogetmoreinformation?Ss:Yes,wedo.T:Todaywewilllearnsomethingabouthowlifebeganonearth.Turntopage25.Let’scometoWarmingupfirst.StepⅡWarmingupReadthethreequestions,whilethestudentslistenandfollow.Givethestudentsseveralminutestodiscussthequestions.Collectanswersfromtheclass.Checkanswerswhilediscussing.StepⅢPre-reading用心爱心专心116号编辑Getthestudentstodiscussthequestionsonpage25withtheirpartners.Thenaskthestudentstotelltheirstories.Encouragethemtotelldifferentstories,Iftheydon’tknowany,tellthemsome.T:Nowdiscussthesequestionswithyourpartners.ThenIwillasksomeofyoutotellusyourstories.Areyouclear?Ss:Yes.Doyouknoweachreligionorculturehasitsownideasaboutthebeginningoftheuniverse?Giveanexampleifyouknow.Doyouknowwhatascientificideais?Readsomestoriestothestudents.Panguseparatestheskyfromtheearth;TheBiblicalAccount;India;Japan;Europe;…StepⅣReadingScanningGetthestudentstoreadthepassagequicklyandaccuratelyandmeanwhilehelpthestudentstoformagoodhabitofreading.Givethestudentsacoupleofminutestolookthrouththewholepassage.Tellthemtoreadsilentlyandthenasksomedetailedquestionsaboutthetext.Encouragethemtoexpresstheirideas.T:Wearegoingtolearnapassageabouthowlifebeganontheearth.Nowreadthetextquicklyandthenanswermyquestions.Whatwasthereontheearthbeforelifebegan?Whydoscientistthinktherehasneverbeenlifeonthemoon?Whydoanimalsfirstappearinthesea?Whydogreenplantshelplifetodevelop?Whyweremammalsdifferentfromotheranimals?Discusstheanswerswiththewholeclass.SkimmingInthispart,studentswillreadthetextagainandfinishpart1,2,3T:Nowskimthepassagefasttofinishpart1,2,3,4Thenwewillchecktheanswerstogether.Keytopart1:DBIGEHACFJ用心爱心专心116号编辑Discusstherestwiththestudents.StepⅤListeningListentothetapeforthestudentstofollowandhavefurtherunderstandingofthepassage.T:Readafterthetape,thenanswermesomequestionswithyourbookclosed.Howdidwatercomeintobeingontheearth?Whyiswaterimportantonearth?StepⅥLanguagepointsT:Turntopage25.Let’slookatthesentences:Itexplodedloudlywithfireandrock,whichwereintimetoproducethewatervapour.Whichleadsnon-restrictiveattributiveclause.intime:soonerorlater;eventuallyIwillseehimintime.Intime(forsth/todosth):notlateShewillbebackintimetopreparedinner.In/outoftime:in/notinthecorrecttimeTheaudienceclappedintimetothemusic.Nobodyknewthatitwasgoingtobedifferentfromotherplanetsgoingaroundthesun.Bedifferentfrom:notlikesomeoneorsomethingelseinoneormorewaysCitylifeisquitedifferentfromcountrylife.Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved.Tocome:servesasattributiveSheisthelastpersontodosuchathing.Dependon:somethingmightonlyhappenorbetrueifthecircumstancesarerightf...