人教版高中英語必修3Unit4thescienceofthestars教案

人教版高中英語必修人教版高中英語必修3《Unit4thescienceofthestars》教案教學(xué)準(zhǔn)備教學(xué)目標(biāo)Teachinggoals教學(xué)目標(biāo)1.Targetlanguage目標(biāo)語言a重點(diǎn)詞匯和短語astronomy,atmosphere,system,violent,solid,explode,carbon,dioxide,oxygen,surface,planet,harmful,development,spread,method,depend,solarsystem,intime,prevent…from,dependonb重點(diǎn)句子1.Whatitwastobecomewasamysteryuntilthedustbegantoslowlycombineintoaballmovingaroundthesun.P252.It’sexplodedloudlywithfireandrock,whichwereintimetoproducethewatervapour,carbondioxide,oxygen,nitrogenandothergases,whichweretomaketheearth’satmosphere.P253.Itallowedtheearthtodissolveharmfulgases,whichhadbecomepartoftheearth’satmosphere,intotheoceansandseas.P254.Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved.P262.Abilitygoals能力目標(biāo)a.EnableSstotalkaboutthescienceofthestars,thedevelopmentoflifeandspacetravelandgravityWheredowecomefrom?Howdidtheuniversebegin?Whyistheuniversethewayitwas?Howwillitend?Howmuchdoyouknowaboutuniverse?Doyouwanttohaveaspacetravel?Doyouknowsomethingaboutgravity?b.Understandthetextandanswerthefollowingquestions:1.Whatwasthereontheearthbeforelifecouldbegin?2.Whydoscientiststhinktherehasneverbeenlifeonthemoon?3.Whydidanimalsfirstappearintheseas?4.Whydidgreenplantshelplifetodevelop?5.Whyweremammalsdifferentfromotheranimals?c.EnabletheSstounderstandthedetailsaboutthepassage,choosingthecorrectansweraccordingtothetextandputtheorderofdevelopmentoflifeintoatimelineandanswerquestions.d.Retellthepassageusingkeysentences.3.Learningabilitygoals學(xué)能目標(biāo)EnableSslearnhowtotalkaboutthebeginningoflifeontheearth.教學(xué)重難點(diǎn)Teachingimportantpoints教學(xué)重點(diǎn)a.Talkaboutthebeginningoflifeontheearth.Whydidanimalsfirstappearintheseas?Whydidgreenplantshelplifetodevelop?b.DiscusstheorderofdevelopmentoflifeTeachingdifficultpoints教學(xué)難點(diǎn)a.Understandthebeginningoflifeontheearth.b.Discussthequestions:Whatwillourfuturebeiftheearthmaybecometoohotforthelivesonit?Whyarehumansthecleverestanimalsontheearth?教學(xué)過程...人教版高中英語必修3《Unit4thescienceofthestars》教案教學(xué)準(zhǔn)備教學(xué)目標(biāo)掌握重點(diǎn)短語教學(xué)重難點(diǎn)學(xué)會(huì)運(yùn)用本課的句型。教學(xué)過程StepIRevision1.Checkretellingofthepassage2.Translatethefollowingsentences.a.你遲早會(huì)成功的.b.我的車與你的不一樣.c.站在門旁邊的那個(gè)人是誰?d.他總是第一個(gè)來,最后一個(gè)走.e.既然你已經(jīng)長(zhǎng)大了,你自己決定吧.Suggestedanswers:a.Youwillsucceedintime.b.Mycarisdifferentfromyours.c.Whoisthepersonstandingbythedoor?d.Heisalwaysthefirsttocomeandthelasttogo.e.Nowthatyouhavegrownupyoucandecideityourself.StepⅡWordstudyThispartisaconsolidationofthewordslearntinthisunit.Askthestudentstodotheexercisesindividually.a.Page28.Firstletstudentsfinishpart1,2b.Checktheanswerswiththewholeclass.c.Givestudents3minutestofinishpart3.d.Letthestudentsreadpart4forawhileandfinishit.e.Checktheanswers.StepⅢPreparationShowsomesentencesontheblackboard.a.Atreehasfallenacrosstheroad.b.Youareastudent.c.Tofindyourwaycanbeaproblem.d.Smokingisbadforyou.e.“Howdoyoudo?”isagreeting.f.Whatshesaidisnotyetknown.g.Thatweshallbelateiscertain.h.It’scertainthatweshallbelate.T:Whatpartdoestheunderlinedpartserveasineachsentence?Orfinditssubjectineachsentence.StepⅣGrammar1.Givethestudentssometimetofindthesentencesinthepassage.Thecollectanswersfromtheclass.2.Showtypicalexamplesofhowtomakeasubjectclause.GuidetheSstofindoutwhatchangeswehavetomakewhenwemakeasentenceorcombinetwosentencesusingsubjectclause.TeachershowstheexampleandSswritedownthesentences.3.Turntopage64,finishtheeightsentencesinexercise2.4.Haveadiscussioninpairs.ThetopicisMydream.Onetalksabouttheproblemsinhisstudyorlife,anothergivessomeadvice.Remindthestudentstousethefollowingstructuresa.Myproblemis…b.Mytroubleis…c.Thequestionis…d.Myadviceis…e.WhatIthinkaboutitis…f.Thefactis…g.Mysuggestionis…【高考鏈接】主語從句一、由what(whatever，whoever)等代詞引導(dǎo)的主語從句。Whattheyareafterismoney.他們追求的是金錢。Whateverwassaidheremustbekeptsecret.這里說的話都應(yīng)當(dāng)保密。二、由連詞that引導(dǎo)的主語從句。其中that一般不可省略，但若用it作形式主語，that從句后置時(shí)，則可省略。為避免頭重腳輕，我們傾向用it開頭，后接be，seem等。如果句子是疑問形式，就只能用帶it的結(jié)構(gòu)。Thatmoneydoesn'tgrowontreesshouldbeobvious.金錢不能從樹上長(zhǎng)出來是顯而易見的。Itisobvious(that)moneydoesn'tgrowontrees.顯而易見，金錢是不能從樹上長(zhǎng)出來的。Hasitbeenannouncedwhentheplanesaretotakeoff?飛機(jī)什么時(shí)候起飛宣布了沒有?注意：1)選用what還是用that引導(dǎo)主語從句要根據(jù)關(guān)聯(lián)詞在從句中是否擔(dān)任成分而定。且what(以及whatever，whoever等)引導(dǎo)的主語從句一般不用it作形式主語。Whathesaidistrue.他說的是真的。(what在其引導(dǎo)的主語從句中作賓語。)ThatChinaisagreatsocialistcountryiswellknown.(=It’swellknownthat…)眾所周知，中國(guó)是一個(gè)偉大的社會(huì)主義國(guó)家。(that在其引導(dǎo)的主語從句中不作任何成分，也無詞義，只起連接作用。)2)it引導(dǎo)的強(qiáng)調(diào)句與it作形式主語的復(fù)合句不可混淆。it引導(dǎo)的強(qiáng)調(diào)句是用來對(duì)句中某一成分加以強(qiáng)調(diào)，其結(jié)構(gòu)為：“Itis(或was)+強(qiáng)調(diào)部分+that(或who)…”強(qiáng)調(diào)句去掉Itis(或was)…that(或who)…框架后，剩余部分為一個(gè)完整的句子。ItwasIthat(who)metMaryinthestreetyesterday.是我昨天在街上遇見了瑪麗。(強(qiáng)調(diào)主語)3)常見的用it作形式主語的復(fù)合句結(jié)構(gòu)：*Itis+形容詞(necessary，strange，important，wonderful，possible，likely，等)+that從句，從句中常用虛擬語氣。ItssaidthatourEnglishteacherwillgoabroadnextweek.據(jù)說我們英語老師下周要去出國(guó)。*It+不及物動(dòng)詞(seems，appears，happens，matters等)+that從句Itseemsthatsheisingreatneedofhelp.看來她急幫忙。4)主語為從句時(shí)，一般要用單數(shù)謂語動(dòng)詞形式;但如果引導(dǎo)的從句作主語、代表復(fù)數(shù)概念(?？蓮谋碚Z上看出)時(shí)，謂語動(dòng)詞則常用復(fù)數(shù)形式：Whatweneediswater.我們需要的是水。Whatweneedareusefulbooks.我們需要的是有用的書。三、由連接代詞或連接副詞(或if,whether)引導(dǎo)的主語從句。Whentheywillcomehasn'tbeenmadepublic.他們什么時(shí)候回來還沒有宣布。WhetherI’llattendthemeetinghasn’tbeendecided.=Ithasn’tbeendecidedwhether(if)I’llattendthemeeting.我是否參加會(huì)議還未決定?！靖呖兼溄印?._____we’llgocampingtomorrowdependsontheweather.A.IfB.WhetherC.ThatD.Where2.______shecouldn'tunderstandwas____fewerandfewerstudentsshowedinterestinherlessons.A.What;whyB.That;whatC.What;becauseD.Why;that3._____leavestheroomlastoughttoturnoffthelight.A.AnyoneB.ThepersonC.WhoeverD.WhoThesewildflowersaresospecialIwoulddo____IcantosavethemA.whateverB.thatC.whichD.whicheverItisprettywellunderstood_____controlstheflowofcarbondioxideinandouttheatmospheretoday.A.thatB.whenC.whatD.how6.___wecan’tgetseemsbetterthan____wehave.A.What;whatB.What;thatC.That;thatD.That;what_______teamwinsonSaturdaywillgothroughtothenationalchampionships.A.NomatterwhatB.NomatterwhichC.WhateverD.Whichever______makesthisshopdifferentisthatitoffersmorepersonalservices.(06遼寧)A.WhatB.WhoC.WhateverD.WhoeverAfterYangLiweisucceededincirclingtheearth,______ourastronautsdesiretodoistowalkinspace.A.whereB.whatC.thatD.how______intheregulationsthatyoushouldnottellotherpeoplethepasswordofyoure-mailaccount.(2005上海)A.WhatisrequiredB.WhatrequiresC.ItisrequiredD.Itrequires【鞏固練習(xí)】1.____studieshardwillpasstheexam.A.WhoeverB.AnystudentC.WhoD.Thosewho2.____theworkersinsistedonwasthatthey____morepay.A.That;mustbegivenB.What;begivenC.Whether;wouldbegivenD.What;shouldgive3.____hewillbesenttoHainaniscertain.A.WhyB.WhetherC.ThatD.How4Youlooksoworried,whathashappened?Itworriesme____I’vehurthim.A.ifB.whichC.whatD.whether5.____hesaidatthemeetingastonishedeverybodypresent.A.WhatB.ThatC.ThefactD.Thematter6.Does____matterifhecan’tfinishthejobontime?A.thisB.thatC.heD.it7.____breaksthelawshouldbepunished.A.AnyoneB.WhoeverC.HeD.Whatever8.____Iacceptthegiftorrefuseitisnoneofyourbusiness.A.IfB.WhetherC.EvenifD.When9.____saidthatwaswrong.A.WhoB.WhoeverC.AnybodyD.Everybody10._____isunknowntousall.A.WheredidhegetitB.WherehegotitC.ThatwherehegotD.Whichhegotit11.____hashelpedtosavethedrowninggirlisworthpraising.A.WhoB.TheoneC.AnyoneD.Whoever12.Itworriedherabit____hershoeswerewornout.A.whileB.thatC.ifD.for13.Ireadaboutitinsomebookorother，doesitmatter____itwas?A.WhereB.whatC.howD.which14.____isafactthatEnglishisbeingacceptedasaninternationallanguageA.ThereB.ThisC.ThatD.It15.Ifound____strangethatshedidn'tshowanyinterestinit.A.thatB.whatC.itD.which【漢譯英】1.澳大利亞出產(chǎn)羊毛。2.父親把零錢放進(jìn)錢包。3.他們敏捷的行動(dòng)阻止了火勢(shì)蔓延。4.你不能永遠(yuǎn)依賴你的雙親。5.我們初次見面到如今已有好多年了?！敬鸢讣敖馕觥俊靖呖兼溄印?.B因謂語動(dòng)詞dependson，說明gocamping這件事尚未確定。主