Unit_4_Astronomy_the_science_of_the_stars公开课课件 ppt
高中英语 Unit 4 Astronomy the science of the stars
Unit 4 Astronomy：the science of the stars 【美文阅读】关于大地起源的神话有许多许多，你了解多少呢？The sky and the earth were at first one blurred entity(混沌整体) like an egg. Then Pangu was born into it. The separation of the sky and the earth took eighteen thousand years. The yang which was light and pure rose to become the sky，and the yin which was heavy and murky(黑暗的)sank to form the earth. Between them was Pangu, who went through nine changes every day, his wisdom greater than that of the sky and his ability greater than that of the earth. Every day the sky rose ten feet higher, the earth became ten feet thicker, and Pangu grew ten feet taller. Another eighteen thousand years passed, and there was an extremely high sky, an extremely thick earth, and an extremelytall Pangu. After Pangu died, his head turned into the Five Sacred Mountains(Mount Tai, Mount Heng, Mount Hua, Mount Heng, Mount Song), his eyes turned into the moon and the sun, his blood changed into water in river and sea, his hair into grass. In all, the universe and Pangu combine in one.【诱思导学】1．Do you agree on the forming of the universe？Give your reasons.________________________________________________________________________________________________________________________________________________2．What kind of people is Pangu in your eyes?________________________________________________________________________________________________________________________________________________【答案】 1.No，I don't agree.Because the scientists have already found out how the universe formed.2．I think Pangu is very great and determined.He is a hero.Period ⅠPreviewing(教师用书独具)●教学目标本课时主要是通过学生对学案所给出的内容的学习，了解本课文中所出现的词汇，初步了解课文以及相关的背景知识，就下一堂课对课文的全面理解起到一个铺垫作用。
人教版高中英语必修三Unit4Astronomy：thescienceofthestars课文知识点解析
Unit 4 Astronomy：the science of the stars 课文知识点解析Warming UpDiscuss in pairs which science subjects are part of medicine,biochemistry,geophysics or astronomy.分组讨论哪些科学科目是医学，生物化学，地理学或天文学的一部分。
in pairs=two at a time=in twos一次两个，两个一组e.g.Shoes and slippers are sold in pairs.鞋子都是论双卖的。
注意：in+数词/名词（数词/名词以复数形式）e.g.in threes and fours 三三两两的in groups 成群的思维拓展in在这里表示：以……数量/形式、形状等。
e.g.Tourists queue in thousands to see the tomb. 游客数以千计排着队看陵墓。
Reading1.The problem was that the earth became violent because it was not clearwhether the solid shape was to last or not.这一问题变得越来越不确定，因为这一球体形状是否能够维持尚未明朗。
(1)violent adj. 猛烈的；激烈的；强暴的a violent language 激烈的语言a violent storm 猛烈的风暴a violent 猛攻思维拓展violence n.［U］1.暴力，强暴2.猛烈，剧烈，强烈(2)whether...or not... “是……还是……”在这里是主语从句,它还可以引导宾语从句、表语从句、同位语从句和状语从句。
e.g.I don’t know whether he will agree with me.（宾语）我不知道他是否同意我的观点。
Unit4Astronomy：thescienceofthestars
Unit 4 Astronomy: the science of the starsUnit 4 Astronomy: the science of the stars话题：1. Science of the stars2. The development of life3. Space travel and gravity功能：How to give instructions重点单词：astronomy n. 天文学system n.系统theory n. 理论religion n. 宗教atom n. 原子globe n. 球体；地球仪；地球unlike prep. 不同biology n. 生物satellite n. 卫星spaceship n.宇宙飞船atmosphere n. 大气层；气氛publish v. 出版；公开；发表violent adj.猛烈的；激烈的；强烈的fundamental adj. 基本的multiply v. 增加；乘thus adv. 因此climate n. 气候carbon n. 碳solid n. 固体 adj. 固体的，坚固的oxygen n. 氧气chain n. 链子；surface n. 表面dioxide n. 二氧化碳puzzle n. 谜；难题vt. 使迷惑harmful adj. 有害的；伤害的exist v. 存在gravity n. 地心引力；重力pull v. 拉；拖crash v. 碰撞；坠落float v. 漂浮；n. 漂浮物mass n. 团；块；质量重点短语：carbon dioxide 二氧化碳solar system 太阳系in time 及时；总有一天；总会prevent…..from防止cheer up 感到高兴；感到振奋now that 既然break out 爆发in one’s turn 轮到某人；接着watch out 密切注视；当心；block out 挡住（光线）重点语法：Noun Clauses as the subject（主语从句）知识梳理一．重点词汇精讲:1. globe n. 球体；地球仪；地球① The teacher asked all the students to have a globe each. 老师要求所有的学生每人都有一个地球仪。
高一英语Unit 4 Astronomy- the science of the stars(教学方
( 英语教案 )学校：_________________________年级：_________________________教师：_________________________教案设计 / 精品文档 / 文字可改高一英语Unit 4 Astronomy: the science of the stars(教Learning English is conducive to making friends, chatting or working together with foreigners, and learning English is very useful for traveling abroad.高一英语Unit 4 Astronomy: the science of the stars(教学方案)unit 4 astronomy: the science of the starsgrammarteaching goals1 target languagea重点词汇和短语suffer, settle , realize , worry about , have got to, tie upb重点句子：he was very disappointed.what it was to become was a mystery.to save money, you must use as few words as possible.c. practise talking about problems in study or lifemy problem is… the difficulty is… my trouble is…the question is… my advice is… what i think about it is…the fact is… my suggestion is…2 ability goalslearn to use noun clauses as the subject..3 learning ability goalslet ss learn how to use noun clauses as the subjectteaching important pointsthe use of noun clauses as the subjectteaching difficult pointshow to teach the ss to learn to use noun clauses as the subjectteaching methodslearn grammar through practiceteaching aidscomputerteaching proceduresstep 1 revision1.check retelling of the passage.the explosion of the earth produced water vapor, which turned into water when the earth cooled down. water allowed the earth to dissolve harmful gases into the oceans and seas. that made it possible for life to begin to develop. the arrival of small plants encouraged the development of early shellfish and all sorts of fish. many millions of years later the first green plants began to appear on land. later land animals appeared. some were insects. others, called amphibians, were able to live on land as well as in the sea. when the plants grew into forests, reptiles appeared for the first time. later, dinosaurs developed. they became the most important animals on the earth for millions of years. after they disappeared,mammals became more important. they were the last group of animals and they were different because they produced their young from within their bodies. small clever animals, with hands and feet, appeared and spread all over the earth. as time went by, they covered the earth and have become the most important animals on the planet.2.translate the following sentences.1.你迟早会成功的。
Unit 4 Astronomy the science of the stars4
预习导学
课堂讲义
预习导学
Unit 4
Astronomy: the science of the stars
Ⅱ.Phrases： 1．cheer up 感到高兴；感到振奋 2．now that 既然 3．get the hang of 熟悉；掌握；理解
Astronomy: the science of the stars
2．I cheered up immediately and floated weightlessly around
in our spaceship cabin watching the earth become smaller
and the moon larger. 我立刻感到高兴起来，由于失重我在太空舱里飘来飘去， 我望着地球越来越小，而月球越来越大。
预习导学
课堂讲义
课堂讲义
[归纳拓展]
Unit 4
Astronomy: the science of the stars
cheer up 感到高兴；感到振奋
cheer sb up 使某人高兴/振奋
cheer sb on (比赛中以喝彩声鼓励某人；为某人加油 cheerful adj.快乐的；高兴的；兴高采烈的 Cheers！ (用于祝酒干杯)
D．Not mentioned in the text.
答案 A
预习导学
课堂讲义
预习导学
Unit 4
Astronomy: the science of the stars
高中英语 unit 4 Astronomy：the science of the stars课件 新
路漫漫其修远兮 吾将上下而求索
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Astronomy：the science of the stars
Unit 4
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话题导入
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Astronomy is the oldest science known to man. Thousands of years ago man looked at the stars and wondered about the heavens. But man was limited by what he could see with his eyes alone.
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Each new tool added to the files of astronomy; it helped man reach out into space. Until there were telescopes(望远镜), man knew little about the moon. They did not know that the planet called Saturn(土星(tǔxīng))has rings around it. Their sight was so limited that they could not see all the planets. In the early 1700s, people thought there were only six planets.
The Greeks studied astronomy over 2,000 years ago. They could see the size, color, and brightness of stars. They could see their places in the sky. They watched the stars move as the seasons changed. But the Greeks had no tools to help them study the starry heavens.
《Unit4+Astronomy：the+science+of+the+stars
Pluto Neptune
Uranu
Earth
sun
Mercury Mars
5. The names of eight planets.
1) 水星 2) 金星 3) 地球 4) 火星 5) 木星 6) 土星 7) 天王星 8) 海王星
• • • • • • • • Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune
par3 The importance of water for life.
Water allowed the earth to dissolve harmful gases and acids into the oceans and seas.
Why is water important?
Which of the following is true? A There is also water on Mars today. B At first the importance of water was very obvious C Water is based on the development of life D The water in the oceans and seas can break down harmful things
Stage 1: The development of the earth (1) After the Big Bang, what was the earth like? and after that ? a cloud of dust a solid globe
(2) What happened when the earth explored? what were they in time to produced?
Unit 4 Astronomy- the science of the stars
Unit 4 Astronomy: the science of thestarsUnit4Astronomy:thescienceofthestars单元要览类别课程标准要求掌握的项目话题Scienceofthestars;thedevelopmentoflife;spacetravela ndgravity词汇]astronomyn.天文学existvi.存在;生存systemn.系统;体系;制度thusadv.因此;于是religionn.宗教;宗教信仰dioxiden.二氧化物theoryn.学说;理论biologyn.生物学atomn.原子biologistn.生物学家billionpron.&n.&adj.（英）万亿;（美）十亿puzzlen.迷;难题vt.&vi.（使）迷惑;（使）为难globen.球体;地球仪;地球gravityn.万有引力;重力violentadj.猛烈的;激烈的;强暴的floatvt.&vi.（使）浮动;（使）漂浮n.漂浮物carbonn.碳gentleadj.温和的;文雅的atmospheren.大气层;气氛physicistn.物理学家unlikeprep.不同;不像climaten.气候fundamentaladj.基本的;基础的crashvt.&vi.碰撞;坠落harmfuladj.有害的spaceshipn.宇宙飞船acidn.酸pulln.&vt.拉;拖;牵引力chainn.链子;连锁;锁链satelliten.卫星;人造卫星multiplyvt.&vi.乘;增加massn.质量;团;块;大量oxygenn.氧exhaustvt.用尽;耗尽短语solarsystem太阳系blockout挡住（光线）intime及时;终于cheerup感到高兴;感到振奋layeggs下蛋nowthat 既然givebirthto产生;分娩breakout突发;爆发inone’sturn轮到某人;接着watchout密切注视;当心;提防carbondioxide二氧化碳prevent...from阻止;制止重要句型1.whatitwastobecomewasuncertainuntilbetween4.5and3. 8billionyearsagowhenthedustsettledintoasolidglobe.2 .Theearthbecamesoviolentthatitwasnotclearwhetherthe shapewouldlastornot.3.whatisevenmoreimportantisthat astheearthcooleddown,waterbegantoappearonitssurface .4.Itwasnotimmediatelyobviousthatwaterwastobefundam entaltothedevelopmentoflife.\[itis/was+adj.+that\]5 .Sowhetherlifewillcontinueontheearthformillionsofye arstocomewilldependonwhetherthisproblemcanbesolved.功能Instructions:Pleasepayattentionto... Pleasecheckthat.... youneed...Don’tforgetto...makesurethat.... watchoutfor...you’dbetter...youmust/mustn’t...Pleaselookat...语法Nounclausesasthesubjectwhatitwastobecomewasuncertai n......itwasnotclearwhetherthesolidshapewastolastor not.教学重点1.Getstudentstolearnaboutthedevelopmentoftheearthan dmakingaspacetrip.2.Havestudentslearnsomeusefulneww ordsandexpressionsandletthemlearneffectivewaystorem emberEnglishvocabulary.3.Enablestudentstousetheexpr essionsofinstructionscorrectlyindailylife.4.Letstud entslearnthenewgrammaritem:nounclausesasthesubject.5.Developstudents’listening,speaking,readingandwritingabilities.教学难点1.Enablestudentstomastertheuseofnounclausesasthesub ject.2.Letstudentslearntowriteashortarticletoshowth eirproblemsandthewaystoovercomethem.3.Developstuden ts’integrativeskills.课时安排Periodsneeded:7Period1warmingupandreadingPeriod2Lea rningaboutlanguage:ImportantlanguagepointsPeriod3Le arningaboutlanguage:GrammarPeriod4Usinglanguage:Lis teningandspeakingPeriod5Usinglanguage:ExtensivereadingPeriod6Usinglanguage:SpeakingandwritingPeriod7Re vision:SummingupandlearningtipPeriod1 warmingupandreading整体设计教材分析Thisisthefirstteachingperiodofthisunit.Atthebeginni ngoftheclass,theteachercanleadinthetopicoftheunitby havingafreetalkwithstudentsaboutsomefamousscientist sandwhattheyhavediscovered.ThenturntowarmingUp.Itisintendedtohavestudentsthinkaboutandthendiscusst hesetwogroupsofquestions:1.Inoursolarsystemeightpla netscirclearoundthesun.whatarethey?canyoumatchthena meswiththeplanets?2.whatinterestsyouinastronomy?Doy ouknowanyquestionsthatastronomersareinterestedin?Pr e-readingistoremindstudentsthattheoriginoflifeonthe earthisaquestionthatinterestsastronomersandeachreli gionandculturehasitsownideasabouthowlifebeganonthee arth.Theteachershouldaskstudentswhattheyknowaboutth eseandthenletthempredictwhatkindofinformationwillbe introducedinthenextpartReading.Thereadingpassagetit ledHowLIFEBEGANoNTHEEARTHprovidesstudentsabriefintr oductiononhowtheuniversedevelopedandhowlifebeganont heearth.Itprovidesascientificbackgroundtoanyinvestigationintospaceanditisfactual.Studentsareencouraged topreviewthetextandfindouttheusefulnewwords,express ionsandstructuresthemselves.Theyshouldtrytoworkoutt hemeaningsofthenewwordsthroughthecontext.Thenifnece ssary,theycanlookthemupinthedictionaryorturntothete acherforhelp.Alsoencouragethemtolookatthepicturesan dreadthetitletoguesswhatthetextmightbeabout.Thenlet themskimforthegeneralidea,andscanforfurtherundersta nding.Inordernottoletthemfeelmuchdifficult,theteach ershoulddealwithanylanguageproblemswhiletheyareread ing.Afterreading,studentsarerequiredtodothefiveexercise sinthecomprehendingtoseehowmuchtheyhaveunderstoodth ereadingpassage.Theteachercanfirstletthemworkinpair soringroupstofindtheanswerscooperatively,andthenche cktheiranswerswiththewholeclass.Toconsolidatethecon tentsofthereadingpassage,studentsshouldberequiredto retellthepassage.Inordertoarousethestudents’interest,theteachercanholdacompetition.教学重点1.Letstudentsreadthepassageandlearnaboutthedevelopm entoftheearth.2.Getstudentstolearndifferentreadingskills,especiallythereadingabilityofunderstandingimp liedmeaningoftheauthor.教学难点1.Enablestudentstounderstandthepassageandknowaboutt hedevelopmentoftheearth.2.Letstudentslearnhowtoused ifferentreadingskillsfordifferentreadingpurposes.三维目标知识目标1.Getstudentstolearntheusefulnewwordsandexpressions inthispart:astronomy,system,religion,theory,atom,bi llion,globe,violent,carbon,atmosphere,unlike,fundam ental,harmful,acid,chain,multiply,oxygen,exist,thus ,dioxide,puzzle,solarsystem,intime,layeggs,givebirt hto,inone’sturn,carbondioxide,prevent...from2.Letstudentslear naboutthedevelopmentoftheearth.能力目标1.Developstudents’readingabilityandletthemlearndifferentreadingskills .2.Enablestudentstoknowaboutthedevelopmentoftheeart h.情感目标 1.Trainstudents’interestinscienceandstimulatetheirloveforastronomy.2.Developstudents’senseofcooperativelearning.教学过程设计方案（一）→Step1PresentationHaveafreetalkwithstudents.1.Letstudentsbrainstormthefollowingquestions:whoareourances tors?Doyouknowwhatitwaslikebeforelifeappearedonthee arth?Doyouknowhowlifebeganontheearth?Doyouwanttoget moreinformation?2.Tellstudents:Todaywewilllearnsome thingabouthowlifebeganontheearth.TurntoPage25.Let’scometowarmingUpfirst.→Step2warmingupLetstudentsthinkaboutthefollowingques tionsandthendiscussthemwiththeirpartners.1.Inoursol arsystemeightplanetscirclearoundthesun.whatarethey? canyoumatchthenameswiththeplanets?VenusEarthmarsmer curyjupiterNeptuneSaturn2.whatinterestsyouinastrono my?Doyouknowanyquestionsthatastronomersareintereste din?→Step3Pre-reading1.Getstudentstodiscussthequestionsw iththeirpartners.1)Theoriginoflifeonearthisaquestio nthatinterestsastronomers.whatdoyouknowaboutit?2)Ea chreligionandculturehasitsownideasabouthowlifebegan onearth.whatdoyouknowaboutthem?2.Letthemtelltheirst ories.Encouragethemtotelldifferentstories.Iftheydon’tknowany,tellthemsome,forexample,Panguseparatedthes kyfromtheearth,Panguturnedintoamyriadofthings,Nuwam ademen,andsoon.3.Askthemtoreadthetitleandlookatthepictures.Predictwhatthereadingwillbeabout.→Step4Reading1.FastreadingGetstudentstoreadthepassag equicklyandthenwritedownthemainideaforeachparagraph andthewholepassageinthefollowingchart.HowLIFEBEGANo NTHEEARTHParagraph1Paragraph2Paragraph3Paragraph4Paragraph5Thepassage Letstudentslookthroughthechartandthenreadthetextsil ently.Threeminuteslater,checktheanswerswiththewhole class.2.IntensivereadingAllowstudentstoreadthepassa gecarefullythistimetogettheimportantdetails,andthen finishthefollowing:1)Puttheorderofdevelopmentoflife intoatimeline.Insectsandamphibiansappeared.Dinosaur sappeared.Theearthbecameasolidball.Smallplantsgrowo nthewater.Reptilesappeared.Plantsbegintogrowondryla nd.Theearthwasacloudofdust.waterappearedontheearth. Shellfishandotherfishappeared.Theuniversebeganwitha “BigBang”.cleveranimalswithhandsandfeetappeared.m ammalsappeared.2)choosethebestanswertoeachquestionaccordingtothetext.whatisimportantforthebeginningofl ife?A.Thewaterontheearth.B.Theearth’satmosphere.c.Theformofforests.D.Dissolvingharmfulg ases.whichofthefollowingappearedontheearthfirst?A.I nsects.B.Reptiles.c.Amphibians.D.Shellfishandfish.w hichofthefollowingstatementsistrue?A.waterstillexis tsonmars.B.Theearth’satmosphereismadeupofoxygenandnitrogen.c.Theearthha ddissolvedtheharmfulatmosphereintotheoceansandseas.D.Plantsprovideoxygentotheearth.whatisthepassagemai nlyabout?A.Theappearanceanddevelopmentoflifeontheea rth.B.Thebirthoftheearth.c.whydinosaursdiedout.D.Th efactthathumanbeingscausedglobalwarming.Suggestedan swers:A D D A3.ReadinganddiscussionReadthetextathirdtimeandthen workinpairstodiscussthefollowingquestions.1)whywast heearthdifferentfromtheotherplanets?2)whydidtheplan tsgrowbeforetheanimalscame?3)whyisitwrongtoshowfilm swithdinosaursandpeopletogether?4)Thereusedtobenine planetsinthesolarsystem.Recentlyscientistshavedecid edthatoneofthemcannolongerbeconsideredaplanet.Doyou knowthenameofthatplanet?Doyouknowwhytheyremovedit?5)whatproblemiscausedbyhumanbeings?--教育资源门户，提供试卷、教案、、论文、素材及各类教学资源下载，还有大量而丰富的教学相关资讯！"type="#_x0000_t75">s.)4.ExplanationHelpstudentsana lyzesomedifficult,longandcomplexsentencesandguessth emeaningofsomenewwords.Encouragethemtotrytodealwith thelanguagepointsinthecontext.Discussthefollowingim portantsentencesandphrasesinthepassage.1)whatitwast obecomewasuncertainuntilbetween4.5and3.8billionyear sagowhenthedustsettledintoasolidglobe.2)Theearthbec amesoviolentthatitwasnotclearwhethertheshapewouldla stornot.3)Theywereintimetoproducecarbon,nitrogen,wa tervaporandothergases,whichweretomaketheearth’satmosphere.4)Sowhetherlifewillcontinueontheearthfo rmillionsofyearstocomewilldependonwhetherthisproble mcanbesolved.Suggestedexplanations:1)whatleadsanoun clauseasthesubjectandwhenleadsanattributiveclause.2 )Here“whethertheshapewouldlastornot”isanounclauseasthesubject.3)Here “whichweretomaketheearth’satmosphere”isanon-restrictiveattributiveclause.intime:1)sooner orlater;eventually2)intime:notlateIwillseehimintime.Shewillbebackintimetopreparedinner.4)Inthissentenc e,therearetwoclausesledbywhether.Thefirstoneisanoun clauseasthesubjectandthesecondastheobject.tocome:se rvesasattributiveSheisthelastpersontodosuchathing.d ependon:somethingmightonlyhappenorbetrueifthecircum stancesarerightforitoursuccessdependsonwhetherevery oneworkshardornot.5.ReadingaloudandunderliningAskst udentstoreadthepassagealoudtothetapeandletthempayat tentiontothepronunciationofeachnewwordandthepausesw ithineachsentence.Tellthemtopickoutalltheusefulexpr essionsorcollocationsfromthepassagewhilereadingandc opythemtothenotebooksafterclassashomework.collocati ons:ontheearth,accordingto,acloudofdust,so...that,w hether...ornot,intime,watervapor,cooldown,onone’ssurface,allow...todo...,achainreaction,millionsof, onthesurfaceof,beableto,aswellas,bydoing....,layegg s,bedifferentfrom,givebirthto,spreadallovertheearth ,inone’sturn,prevent...from,asaresultof,too...to...,depend on→Step5DiscussionAfterreadingthepassage,letstudentsdi scussthefollowingquestions.1.whydoyouthinkthathumansarethecleverestanimalsontheearth?2.Doyoubelievetha tthereislifeonotherplanets?whyorwhynot?3.Doyouthink itispossiblethatonedaypeoplewillmovetheirhousestoot herplanets?→Step6consolidationAskstudentstoretellthepassagewith thehelpofthefollowing.acloudofdust→asolidball→presenceofwater→smallplantsgrowonthewater→shellfishandotherfishappear→plantsbegintogrowondryland→insectsandamphibiansappear→retilesappear→dinosaursappear→mammalsappear→Step7Homework1.Learntheusefulnewwordsandexpressions inthispartbyheart.2.Readthereadingpassageagainandtr ytotalkabouthowlifebeganontheearthinyourownwords.设计方案（二）→Step1LeadinginthetopicShowstudentsapictureaboutsola rsystem.Letthemmatchthenameswiththeplanets.→Step2warmingupEachreligionandculturehasitsownideasabouttheorigino flifeontheearth.Letstudentstelldifferentstoriesthat theyknow.→Step3Predictingbylookinganddiscussing1.Lookatthepic turesandtitleofthereadingpassageanddiscussinpairswh atthepassagemightbeabout.2.Twoorthreestudentswillgi vetheiropinions.3.Letthemreadthepassagequicklytosee iftheyareright.→Step4Reading1.Givestudents3minutes,andaskthemtoskim thepassagetogetthegeneralideaforeachparagraphandthe passage.2.Givestudents5minutestoreadthepassagecaref ully,andthenanswerthefollowingquestions.1)whatwasth ereontheearthbeforelifebegan?2)whydoscientiststhink therehasneverbeenlifeonthemoon?3)whydidanimalsfirst appearinthesea?4)whydogreenplantshelplifetodevelop?5)whyweremammalsdifferentfromotheranimals?3.Givestu dents4minutestoreadthepassageathirdtime.Encourageth emtotrytodealwiththelanguagepointsinthecontext.Give themsomeexplanationsifnecessary.4.Listeningandreadi ngaloudLetstudentslistentothetape.Remindthemtopayat tentiontothepronunciationofeachnewwordandthepausesw ithineachsentence.Thenaskthemtoreadthetextaloudtoth etape.→Step5ExtensionLetstudentsthinkaboutanddiscussthefol lowingquestions.1.Doyoubelievethatthereislifeonotherplanets?whyorwhynot?2.Doyouthinkitispossiblethaton edaypeoplewillmovetheirhousestootherplanets?→Step6closingdown1.Havestudentsgetpreparedin3minutes orsoandthenaskthemtoretellhowlifebeganontheearth.2. Askasmanystudentsaspossibletohaveatryinfrontofthecl ass.→Step8Homework1.Gooverthetextandtrytolearnalltheusef ulwordsandexpressionsinthispartbyheart.2.Finishthee xercisesincomprehendingonPage27.板书设计Unit4 Astronomy:thescienceofthestarswarmingupandreadingHo wLIFEBEGANoNTHEEARTHParagraph1Paragraph2Paragraph3Paragraph4Paragraph5Thepassage活动与探究Supposeyouareanexpertwhostudiesastronomy.youareinvi tedtogiveaspeechtotheschoolstudentsaboutthedevelopm entoflifeonEarthDay.ReadthepassageHowLIFEBEGANoNTHE EARTHagainandgotothelibraryorsurftheInternettofindm oreinformationandbereadytopresentyourspeechtotheclass.youmaybeginlikethis:Goodmorning/afternoon.Iamgre atlyhonoredtobeheretogiveyouaspeechaboutthedevelopm entoflife.。
Unit-4-Astronomy-the-science-of-the-stars
st night we had a discussion, which became more and more _v_io_l_e_n_t_. Finally we reached an agreement that we will never use violence whatever happens.(violent)
太阳系
14．carbon dioxide
二氧化碳
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Ⅱ.高频词汇(汉译英)
1． system n．
系统；体系；制度
2． religion n.
宗教；宗教信仰
3． theory n.
学说；理论
4． violent adj. 5． atmosphere n.
猛烈的；激烈的；强暴的 大气层；气氛
6． unlike prep.
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4．cheer up 感到高兴；感到振奋；(使)高兴；(使)振奋
(1)cheer sb. up cheer sb. on
(2)Cheers!
使某人振作起来 (比赛中)为某人喝彩；为某人加油 [口语](用于祝酒)干杯！
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5．puzzle n．谜；难题；(游戏的)猜谜 vt.& vi.(使)迷惑；(使)为难
8. pull n．& vt. 9. multiply vi.& vt.
拉(力)；拖；牵引力 乘；增加
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拓展单词用活
[记全记牢]
1.religion n．宗教；宗教信仰→ religious adj.宗教的 2.theory n．学说；理论→theoretical adj.理论的；理论性的 3.violent adj.猛烈的；激烈的；强暴的→ violence n．暴
高中英语 Unit4《Astronomy：the science of the stars》Lear
Unit 4 Astronomy：the science of the stars Learning about Language
Put these words into the more suitable one of the two boxes.
Ex. 3 P28
energetic violent gentle patient angry cruel terrible calm relaxing shocked harmful kind friendly jealous
4.“what”引导主语从句时，谓语动词： 1）常与其后作表语的名词一致 2）根据句子的语境而定。
5. 主语从句需注意的问题
2.主语从句中用陈述语序。
1.Where shall we spend the holiday isn’t decided.
2.Your have made a mistake is a fact.
B
B
A
B
C
B
7. _____ we need more practice is obvious. A. What B. That C. When D. / 8. _______ they can solve the question is still unknown. A. If B. Which C. Whether D. What 9. _____ he said at the meeting astonished everybody. A. Why B. What C. That D. Who
Grammar
What part does the underlined part serve as in each sentence? A tree has fallen across the road. You are a student. To find your way can be a problem. Smoking is bad for you.
人教版英语Unit4 Astronomy：the science of the_stars(人教版必修3.
► 归纳拓展 pull away pull back pull down pull in pull out pull through (汽车等)开走 撤回 拆毁；摧毁 (车辆)进站停靠，靠边停靠 驶出；退出 康复；痊愈
[英文典例] ①He pulled the chair away from the desk. 他把椅子从桌边拖开。 ②We waved as the train pulled out of the station. 火车驶出车站时我们挥手告别。 ③The police car signalled to us to pull in . 警车发出信号，要我们驶向路边停靠。
解析：考查主语从句。that引导主语从句，在从句中不作成 分；what引导主语从句时充当句子成分；if不能引导主语从句位于 句首；whether是否，不合题意。由语意可知 C项正确。 答案：C
第一板块 词汇精讲
1． exist vi.存在；生存 [ 回 归 课 本 P 26]They laid eggs too and existed on the ear th for more than 140 million year s. 它们也生蛋，在地球上存在了 14000 多万年。
► 归纳拓展 (1)puzzle over/about sth. puzzle sth.out a puzzle to sb. (2)puzzled adj. puzzling adj. 苦苦思索；仔细琢磨„„ 琢磨出„„的答案 某人不懂 迷惑不解的(常用来修饰人) 令人迷惑不解的(常用来修 饰事物)
[英文典例] ①Poverty still exists in this country. 贫穷在这个国家依然存在。 ②They are paid hardly enough to exist on . 他们收入微薄，几乎无法维持生活。 ③There exists a lake on the top of the mountain. 山顶上有一个湖。 ④Pakistan after the war. 巴基斯坦在战后就以一个独立的国家存在了。
英语：Unit 4《Astronomy the science of the stars》教案-Reading 2(新人教版必修3)
Unit 4 Astronomy: the science of the starsTeaching goals 教学目标1 Target language目标语言a. 重点词汇和短语force, gradually, float, mass, cheer up, now that, break outb.重点句子：When we get closer to the moon, we shall feel its gravity pulling us but it will not be as strong a pull as the earth’s. P30Walking does need a bit of practice now that gravity has changed. P31We watched, amazed as fire broke out on the outside of the spaceship the earth’s gravity increased. P312 Ability goals 能力目标a Discuss the three ways in which gravity changed on the moon. and some information about black holes.b. Discuss the questions about the passage:How did gravity change on the moon?What does a black hole look like?What will happen if an object is near the black hole?Teach the Ss to read passages with feeling.3 Learning ability goals 学能目标Enable the Ss to get to know about gravity and black holes.Teaching important points教学重点Talk about gravity and black holes.Teaching difficult points教学难点a. Discuss the answers to the questionsb. Teach the Ss to read the passage with feeling, paying attention to pronunciation and intonation. Teaching methods教学方法a. Fast readingb. Dealing with comprehension questionsc. DiscussionTeaching aids教具准备A projector, a computer, a recorderTeaching procedures & ways教学过程与方式Step I RevisionCheck homeworkT: Last class we have learned different ideas about gravity, what quality an astronaut should have and some equipment on a spacesuit. Now answer the question: What needs to be an astronaut? S: An astronaut should have good health, excellent degree, many years’ training, right height and weight. They also should be calm, firm, patient, mature and hard-working. They must be able to adapt to the harshness of life in space.Step II Reading (Page30)1.Ask the students to read the passage quickly and fill in the form. Then check the answer.T: In last lesson, we have learned some information about gravity. Today we’ll know gravity in details.2.Listen to the tape and imitate he tape. Then practice reading aloud the dialogue with feeling.3.Ask two or three pairs of Ss to read the passage with feeling.Step III Reading Task (Page66)This reading passage is about black holes.. After the first reading, let the Ss answer some questions. Show the questions on the screen. Then, let them talk about the form on page 67 after reading the text again.T: Last time we’ve learnt something about black holes in Listening. Do you remember Stephen Hawking’s idea about it?S: He thinks that black holes can both eat and spit objects out.T: Very good. Now we’ll read the passage about black holes. Turn to Page66, read it quickly and try to find the answers to the questions.Questions: 1.Can a black hole be seen? How do you know it’s a black hole?2.What happened to the spaceship from the beginning to the end?Check the answer with the whole class.Answers: 1.No, it can’t be seen. You can see things disappear into what appears to be an empty space.2.At first the lights on the spaceship went out and the computer stopped working.Then the spaceship jumped and began to move around the edge of the outside of thehole.As the spaceship moved around the hole, it began to go faster and faster.But then the spaceship jumped again, and it moved sideways from the black hole.It began to increase its speed until it seemed to be going as fast as light.At last the spaceship slowed down and the computer started working again.T: Now talk about the form on Page 67 with your partners.(A few minutes later,)T: All right.We’ll talk about the answers.Ask several students to answer them one by one, and then show suggested answers.Suggested answers:Step IV Extra-readingHere is a supplementary reading material on the screen, a passage about black holes. Read it carefully and then do some comprehension exercises with their partners.T: Till now, we have learned two passages about gravity and black holes. Here is a supplementary reading material on the screen. Read it carefully and prepare to do some reading comprehension exercises with your partners.Questions: 1.What’s a black hole?2.Why is it called black hole?3.What is called the singularity?4.What is called the event horizon?What is a Black Hole?A black hole is what remains when a massive star dies.If you have read How Stars Work, then you know that a star is a huge, amazing fusion reactor. Because stars are so massive and made out of gas, there is an intense gravitational field that is always trying to collapse the star. The fusion reactions happening in the core are like a giant fusion bomb that is trying to explode the star. The balance between the gravitational forces and the explosive forces is what defines the size of the star.As the star dies, the nuclear fusion reactions stop because the fuel for these reactions gets burned up. At the same time, the star's gravity pulls material inward and compresses the core. As the core compresses, it heats up and eventually creates a supernova explosion in which the material and radiation blasts out into space. What remains is the highly compressed, and extremely massive core.The core's gravity is so strong that even light cannot escape. This object is now a black hole and literally disappears from view. Because the core's gravity is so strong, the core sinks through the fabric of space-time , creating a hole in space-time -- this is why the object is called a black hole. The core becomes the central part of the black hole called the singularity. The opening of the hole is called the event horizon. You can think of the event horizon as the mouth of the black hole. Once something passes the event horizon, it is gone for good. Once inside the event horizon, all "events" (points in space-time) stop, and nothing (even light) can escape. The radius of the event horizon is called the Schwarzschild radius,named after astronomer Karl Schwarzschild, whose work led to the theory of black holes. Suggested answers:1. A black hole is what remains when a massive star dies.2. Because the core's gravity is so strong, the core sinks through the fabric of space-time , creating ahole in space-time -- this is why the object is called a black hole.3.The core becomes the central part of the black hole called the singularity.4.The opening of the hole is called the event horizon. Step V HomeworkCollect passages about gravity. Prepare for speakingHistoryThe concept of an object from which light could not escape (e.g., black hole) was originally proposed by Pierre Simon Laplace in 1795. Using Newton's Theory of Gravity , Laplace calculated that if an object were compressed into a small enough radius, then the escape velocity of that object would be faster than the speed of light.Photo courtesy NASAArtist concept of a black hole: The arrows show the paths of objects in and around the opening of the blackhole.。
高中英语 Unit 4 Astronomy the science of the stars(第3课
2016-2017学年高中英语Unit 4 Astronomy the science of the stars（第3课时）试题（含解析）新人教版必修3编辑整理：尊敬的读者朋友们：这里是精品文档编辑中心，本文档内容是由我和我的同事精心编辑整理后发布的，发布之前我们对文中内容进行仔细校对，但是难免会有疏漏的地方，但是任然希望（2016-2017学年高中英语Unit 4 Astronomy the science of the stars（第3课时）试题（含解析）新人教版必修3）的内容能够给您的工作和学习带来便利。
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Unit 4 Astronomy: the science of the stars（3）Period 3 Grammar：主语从句一、主语从句的概念与连接词作主语的从句叫主语从句，它是名词性从句之一。
引导主语从句的连接词有：1。
从属连词that，whether。
☛That they were true sisters was clear from the facial resemblance between them。
很明显，她们的确是亲姐妹，她们的脸型很相似.☛Whether he’ll come here isn't clear。
他是否会来这里还不清楚。
2. 连接代词who, whom， whose， what， which， whoever， whatever, whichever。
☛What she did is not yet known。
她干了什么尚不清楚.☛Whoever comes is welcome。
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Astronomy is the scientific study of the universe and the heaven bodies (such as the sun, the moon, and stars), gas, and dust within it.
astronomer
solar system
• eight planets • many comets • other objects
What are the English names of the eight planets that circle our sun?
金星 Venus
火星 Mars
2. What has happened after that? Atoms began to form and combine to create stars and other bodies.
A Big Bang
atom
stars
Reading for information: Para 2
For several million years after the" Big Bang"...
Stage2 The development of life
Reading for information: Para 4-5 Make a timeline of the development of life:
ertremely small plants appears in water
Shellfish and all sorts of fish
between 4.5 and 3.8years ago
a cloud of dust
a solid globe
it exploded with fire and rock
What's even more important?
... mThaekeeatrhteh cooled down and water began to appear on its
Day 1: God spoke and separated light from darkness creating Day and Night
Day 2: God spoke and separated the water creating sky and ocean Day 3: God spoke and created dry land Day 4: God spoke and created the sun, moon and stars Day 5: God spoke and created living creatures in the air and sea Day 6: God spoke and created the land animals and man Day 7: God rested and blessed this day calling it Holy
Stage 1 : The development of the earth (para 1—3)
Stage 2 : The development of life (para 4—5)
Reading for information: Para 1
1. What is the widely accepted theory? "A Big Bang" that threw matter in all directions.
Reading for information: Para 4-5
1.Who are the small clever animals with hands and feet? Human Beings
2. Are they taking care of the earth well? Why?
Because they are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space.
green plants began to grow on land
dinosaur
reptiles appeared
forests
land animals: insects&hibians
the rise of mammals
small clever animals with hands and feet
The earth became too hot to live on
1. Retell the passage according to the form.
2. Suppose you were the earth, what would you advise humans to do? Write a letter to the human being.
水星 地球 Mercury Earth
木星
Jupiter
天王星 土星 Uranus Saturn
海王星 Neptune
Pre-reading
2. Each religion and culture has its own ideas about how life began on earth. What do you know? In China, we all know that Pangu separates the sky fand created the sun, moon and stars
Day 5: God spoke and created living creatures in the air and sea
Day 6: God spoke and created the land animals and man
esuarrtfhac'se.
atmosphere
other water nitrogen carbon
gases vapour
dioxide
Reading for information: Para 3
Water appeared on the _e_a_r_th___, besides that, water had also appeared on other planets like_M_a_r_s_, but it had _d_is_a_p_p_e_a_re_d_ later.
What a role the water played in the development of life? The presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. This produce a chain reaction which made it possible for life to develop
Pangu separates the sky from the earth
The Goddess Nuwa mended the heaven and created human beings from the clay(粘土).
God created the world in seven days:
Day 7: God rested and blessed this day calling it Holy
How Life Began on the Earth
Reading for structure:
This text can mainly divided into two stages: