一轮复习必修三第四单元 Astronomy.pptx

Astronomy:thescienceofthestars,Module3Unit4Revision,Unit4Astronomy:thescienceofthestarsrevision,Section1-TopicWriting你接受了一项写作任务，要为英语校报写一篇有关UFO的文章。请根据以下信息，简要介绍UFO。,Unit4Astronomy:thescienceofthestars,外星人alien,精彩美文UFO,whichisshortforUnidentifiedFlyingObject,haslongbeenregardedasoneofthetop10unsolvedmysteriesintheworld.ThefirstUFOsightingwasreportedtohavehappenedinAmericain1878.Sincethen,numeroussightingshavebeenreportedallovertheworld,manyofwhichturnedouttobefalse.,Unit4Astronomy:thescienceofthestars,SomepeoplethinkUFOsarespaceshipsfromotherplanets,othersbelievethattheyrejustakindofnaturalphenomenonandstillothersguesstheyrealiens.NowaboutonethirdofthecountriesintheworldaredoingresearchonUFOs,aboutwhichmanybooksandjournalshavebeenpublished,andinsomeuniversitiescoursesareevensetuptostudyUFOs.,Unit4Astronomy:thescienceofthestars,名师点睛1文章体裁：说明文。2行文逻辑：介绍UFO人们的看法研究状况。3词汇短语：运用了较高级的词汇和短语。如：beshortfor(是的简称)，beregardedas(被认为是)，turnout(结果)，setup(建立，成立)等。4句式句法：运用了多样化的句式结构。如：定语从句：whichisshortforUnidentifiedFlyingObject,manyofwhichturnedouttobefalse,aboutwhichmanybooksandjournalshavebeenpublished；宾语从句：thattheyrejustakindofnaturalphenomenonandstillothersguesstheyrealiens等。,Unit4Astronomy:thescienceofthestars,SectonII-VocabularyUsage1Notlongagoav_earthquakeoccurredoffthecoastofIndonesia.2Computerhackershavebrokendownsecuritys_，raisingquestionsaboutthesafetyofinformation.3Saltd_inwaterandbecomespartofit.4Hespentthewholeafternoonp_weedsinthegarden.5Wheneverrecession(衰退)strikes,itsetsoffachainr_intheinternationalmoneymarkets.,iolent,ystem,eaction,ulling,基础自主检测,issolves,Unit4Astronomy:thescienceofthestars,6Thereisafriendly_(气氛)ofhelpingeachotherwithdifficultiesinstudyinourclass.7Therearemany_(理论)abouttheoriginoflife.8Herschoolreportshowsthatsheisweakinmathsand_(生物学)9Hewasinterestedin_(天文学)andalwaysstayedupatnighttowatchthestars.106_(乘)by5is30.,theories,atmosphere,biology,astronomy,multiplied,Unit4Astronomy:thescienceofthestars,.短语检测1Istayeduplatelastnight,sotodayIcant_(振作)2_(既然)youhavegrownup,youshouldnotdependonyourparents.3_(当心)thecarswhenyoucrossthestreet.4Thisnewcountry_(成立，存在)in1951.5Weputacurtainacrossthewindowto_(挡住)thesunlight.,cheerup,Nowthat,Watchoutfor,blockout,cameintoexistence,Unit4Astronomy:thescienceofthestars,6Pressthebuttonwhenthelightgoesonyouwillsoon_(掌握)it.7Peopletrytoavoidpublictransportationdelaysbyusingtheirowncars，andthis_(反过来)createsfurtherproblems.8Hehas_(大量)letterstoanswerandhastoworkfrommorningtonight.9Theaudienceclappedtheirhands_(合拍，及时)tothemusic.10Somepeoplefeeleasyandcomfortabletobeservedbyothersbutwhentheyareaskedtoserveothers_(轮到他们),theyareunwillingorevenhatetodoso.,getthehangof,inturn,massesof,intheirturn,intime,Unit4Astronomy:thescienceofthestars,基础自主检测,Unit4Astronomy:thescienceofthestarsSection3-TextRevisionTask1-Listenforthemainidea,TaskTwo-.课文回顾Differentreligionsandcultureshavetheirownideasabouthowtheuniversecameinto1._.Accordingtoa2._(wide)acceptedt_,theuniversebeganwitha“BigBang”_3._(explode)loudlywithfireandrockandthrewmatterinalldirections.Severalbillionyearsafterthat,thedust4._(settle)intoasolidglobe,theearth,wherethe5._(continue)presenceofwatermakeslifepossible.Lifedevelopedfrom6._plantstocomplicatedmammals,movingfromwatertoland.Atlast,mammalssawanewspecies7._(appear),human,whichspreadalloverthe,being/existence,Unit4Astronomy:thescienceofthestars,widely,exploded,settled,continued,simple,appearing,earth.Togetherwiththeircivilization,aseriesofproblemshave8._(arise),makingtheearthfarfromaparadise.9._lifewillsurviveontheearthformillionsofyears10._(come)willdependonwhethertheproblemscanbesolved.,arisen,tocome,Unit4Astronomy:thescienceofthestars,Whether,D.Awidelyacceptedtheoryabouttheformationoftheuniverse,C.Theformation(形成）oftheearth,A.Theimportanceofwaterforlife,B.Thedevelopmentofplantsandanimalsontheearth,E.Thearrivalofhumansandtheirimpactontheearth,Task2-Glanceandfindthemainideaofeachparagraph,(2)Writedownthemainideaforeachparagraphandanalyse(分析）itsstructure（结构）.,TaskThree-佳句再现1Theearthbecame_itwasnotclearwhethertheshapewouldlastornot.地球变得激烈动荡，不知道这个形状是否会继续保持下去。2Thisproducedachainreaction,_forlifetodevelop.这引起了连锁反应，为生命的发展提供了可能。3ButwhenItriedtostepforward,IfoundIwascarried_ontheearthandfellover.但当我努力向前迈步的时候，我发觉我被送出去很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。,soviolentthat,whichmadeitpossible,Unit4Astronomy:thescienceofthestars,twiceasfaras,4So_ontheearthformillionsofyearstocomewilldependon_所以，在未来的数百万年中，生命能否在地球上延续取决于这个问题能否得到解决。5Asaresultofthisevent,agreatdustcloudformedinthesky_.由于这一事件，天空中形成一大团尘埃，遮住了阳光。,whetherlifewillcontinue,blockingoutthesunlight,Unit4Astronomy:thescienceofthestars,whetherthisproblemcanbesolved,单词点睛1harmfuladj.有害的；伤害的(causingorcapableofcausingharm)(1)beharmfulto对有害(2)dosbharm/doharmtosb伤害某人Thereis(no)harmin(sbs)doingsth(某人)做某事有(无)害处(3)harmn&vt.损伤；伤害harmlessadj.无害的,Unit4Astronomy:thescienceofthestarsTaskFour-Languagepoints,【活学活用】(1)2015江苏卷阅读BEvenwhenthemachinesarerecycledandtheharmfulmetalsremoved,therecyclingprocessofteniscarriedoutinpoorcountries甚至当这些机械装置被回收，有害的金属被去除，这些回收过程经常是在贫穷国家进行的(2)Yoursmokingcanbeharmful_thehealthofyourchildren.你吸烟会危害到你的孩子的健康。,to,Unit4Astronomy:thescienceofthestars,(3)Itneveroccurredtohimthathiscarelessnesscoulddo_tohimself.他从未想到他的粗心会对自己造成如此巨大的伤害。(4)Hehasgotintothebadhabitofreadingonthebed,_hiseyesight.他已养成了在床上看书的坏习惯，这习惯对他的视力有害。,suchgreatharm,返回目录,whichisharmfulto/doesharmto,Unit4Astronomy:thescienceofthestars,2existvi.存在；生存(1)existonsth(liveonsth)靠某物生存existin存在于之中existas作为而存在，以形态存在Thereexists有/存在(2)existencen.存在inexistence现存的；现有的comeintoexistence产生；存在bringintoexistence使发生；使产生；使成立温馨提示exist没有被动语态，也不能用于进行时态。,Unit4Astronomy:thescienceofthestars,【活学活用】(1)2015重庆卷阅读EWorksofthistype,hebelieved,spoketodeepandunvaryingfeaturesofhumannatureandcouldcontinuetoexistovercenturies.他认为，这种类型的作品跟人性深层的不变的特性对话，能继续存在好几个世纪。(2)Nooneknowswhensuchacustomfirst_.没有人知道这种风俗是什么时候开始有的。,Unit4Astronomy:thescienceofthestars,cameintoexistence/being,(3)Fromthestartingpointtodestination,_alongdistance.从起点到终点有很长一段距离。(4)Whenyoufeelthatsomeoneisthreateningyour_，youfightbacktosaveyourself.当你感觉有人威胁到你的生存时，你会反击以拯救自己。,Unit4Astronomy:thescienceofthestars,thereexists,existence,3preventv阻止；制止prevent/stop/keepfromdoingsth阻止做某事protectfrom保护不受侵袭；挡住；防御keepdoingsth使一直做某事,Unit4Astronomy:thescienceofthestars,温馨提示(1)在主动语态中，stop/preventfromdoingsth中可省去from，而keepfromdoingsth中的from不可省略；在被动语态中，这三个搭配中的from均不可省略。(2)在protectfrom结构中，from后接能带来伤害或损害之物。,Unit4Astronomy:thescienceofthestars,【活学活用】(1)2015全国卷阅读七选五Asalways，youshouldstretchatleasttenminutesbeforeeachruntopreventinjuries.像往常一样，在每次开跑之前，你应该伸展四肢至少十分钟，以避免受伤。(2)Iamverysorrythatapreviousengagementpreventsme_yourkindinvitation.很抱歉，因为我早已有约会所以不能接受你好意的邀请。,(from)accepting,Unit4Astronomy:thescienceofthestars,(3)Everypossiblemeansshouldbetakentopreventtheriverfrom_.应该采取各种可能的措施来防止这条河流受到污染。(4)Unlesswegetmorefundingwell_finishingourexperimentalprogramme.除非我们得到更多的经费，否则我们将无法完成实验项目。,beingpolluted,bepreventedfrom,Unit4Astronomy:thescienceofthestars,puzzlen.谜；难题vt.&vi.(使)迷惑；(使)为难(1)beinapuzzle不知如何是好beinapuzzleabout对迷惑不解(2)puzzleover/about苦苦思索；仔细琢磨(3)puzzledadj.迷惑的；不解的puzzlingadj.令人迷惑的bepuzzledby被迷惑,Unit4Astronomy:thescienceofthestars,温馨提示puzzled意为“迷惑的，不解的”，往往用于指人或人的表情、脸色、声音等；puzzling意为“令人迷惑的，让人不解的”，往往指物。,Unit4Astronomy:thescienceofthestars,【活学活用】(1)2015四川卷阅读EPeoplehavelongpuzzledoverhowtheEgyptiansmovedsuchhugerocks.人们很长时间以来一直困惑，古埃及人是如何移动如此巨大的石块的。(2)Thereportersaswellassomecriticsremained_bytheelectionresults.一些批评家和记者们仍然对这次大选的结果困惑不解。,Unit4Astronomy:thescienceofthestars,puzzled,(3)_mostwasthattheycouldnotfindthecauseofthedisease.最使医生们困惑的是他们无法查出病因。(4)Howtheydiscovereditstillremains_他们是如何发现它的仍是个谜。,Unit4Astronomy:thescienceofthestars,Whatpuzzledthedoctors,apuzzle,pulln.&vt.拉(力)；拖；牵引力pullback拉回来；缩回；使后退pulldown拉下(窗帘等)；拆毁；拆掉(房屋等)pullout拔出；(列车等)驶出，出站；脱离pullin(列车等)驶进，到站；(船)靠岸pulltogether齐心协力；通力合作pullthrough(使)渡过危机/难关；康复pullup把往上拽,Unit4Astronomy:thescienceofthestars,【活学活用】(1)2014新课标全国卷完形ItwasimpossibleforJoetoclimbbackorforSimontopullhimup.乔爬回来或者西蒙把他拽上来都不太可能。(2)Everyonewasveryconcernedwhetherhewouldpull_ornot.每个人都很担心他是否能够挺过去。(3)Theyweresodeeplyinvolvedinthematterthattheyfoundithardtopull_.他们在那个问题上陷得太深，以至于难以自拔。(4)Itiseasiertopull_thantobuildup.败事容易成事难。,through,Unit4Astronomy:thescienceofthestars,out,down,单词及时练用适当的词或所给词的适当形式填空1Whatmakesme_(puzzle)iswhyheleftthecountrywithouttellinganyone.2His_(present)atthemeetingtookusabackforhewassupposedtobeonabusinesstourthen.3Animal_(extinct)isatacriticalpointthaturgentactionshouldbetakentoprotectsomespeciesfromdyingout.4Themedicationhelpsto_(less)yourpainandreducesufferings.,Unit4Astronomy:thescienceofthestars,puzzled,lessen,presence,extinction,5Thelongtalk_(exhaust)mystrengthandpatience.Eventually,Iburstout.6Shestronglyobjectedtomymothersmarriage.Surprisingly,mymothersreaction_itwasrathercalm.7Theconstitution,unlikeotherformsoflaws,isfundamentalto_(keep)oursocialsystemworkingproperly.8Thegovernmenthastoclosethosesmallfactoriestopreventthewateroftheriver_(pollute)9Thereisalotofrubbish_(float)onthesurfaceoftheriver.,Unit4Astronomy:thescienceofthestars,exhausted,keeping,to,beingpolluted,floating,10Thespacemenhavealreadygotaccustomedtoitthattheywillfly_(weightless)inspace.,Unit4Astronomy:thescienceofthestars,weightlessly,短语储存1intime(soonerorlater)迟早；(eventually)最后；(earlyorsoonenough)及时ontime准时allthetime一直，始终atonetime曾经，一度atatime每次，逐一fromtimetotime有时，偶尔innotime立刻，马上timeandtimeagain一次又一次，一再,Unit4Astronomy:thescienceofthestars,温馨提示intime后可接forsth/todosth的形式，意为“做某事及时/来得及”。,Unit4Astronomy:thescienceofthestars,【活学活用】(1)2015四川卷阅读CInvestingintimeforparentingandraisingrelationshipsismoneywellspent.及时地在为人父母和养育关系上投入的钱是值得花的。(2)用time的相关短语填空Ifyoukeepon,youllsucceed_Thecarcametoastopjust_topreventanaccident._，halfthelandontheearthssurfacewascoveredbytheforest.Wellhavehadtheleakfixed_,Unit4Astronomy:thescienceofthestars,intime,intime,Atonetime,innotime,2cheerup高兴起来；振作精神(1)cheersbup使某人振作起来cheersbon(比赛中)以喝彩声鼓励；为某人加油cheerfor为而欢呼(2)Cheers!口语(用于祝酒)干杯！wordsofcheer鼓励的话,Unit4Astronomy:thescienceofthestars,【活学活用】(1)2014福建卷阅读ASowewentovertotheflowersellerandaskedherifwecouldbuyaflowerfortheladytocheerherup.因此，我们去了卖花人那里，问她我们能否为那位女士买朵花让她振作起来。(2)Iftheywinthefinaltonight,theteamaregoingtotouraroundthecity_bytheirenthusiasticsupporters.如果他们赢了今晚的决赛，队员们将会巡游全城，接受热心支持者的欢呼。,Unit4Astronomy:thescienceofthestars,tobecheered,5Doctorssaymanydiseasescanbe_spreadingbywashingourhands.6Excuseme,sir?Wouldyoumindmovingalittlebittotheleft?Youare_myviewofthescreen.7Wehavetoclosely_anymovementsoftheenemytroopsalongthebordersothatwewontbeattackedwithoutwarning.8Iwasabouttoknockonthedoorwhenitwasopened_,preventedfrom,Unit4Astronomy:thescienceofthestars,blockingout,watchoutfor,fromwithin,.深度演练用与break的相关短语填空1Quarrelsoften_(爆发)betweenthewifeandhusbandbuttheybothwishtotakemeasurestopreventthemfromlivinghappily.2Shallwe_(中断)ourdiscussionandhavesometeaorcoffee，please?3Becarefulwhenyouopenanunknowndocument.Itmightcontainthedeadlyviruswhichcouldentirely_(使崩溃)yourcomputersysteminaminute.,breakout,Unit4Astronomy:thescienceofthestars,breakoff,breakdown,4He_(插话)withsomeideasofhisownandwoneveryonessupport.5Wemust_(破除)theseoldcustoms,fortheyareharmfultosociety.6Theband_(解散)andeachtooktheirownpathseparately.,brokein,Unit4Astronomy:thescienceofthestars,breakawayfrom,brokeup,句型透视1ButwhenItriedtostepforward,IfoundIwascarriedtwiceasfarasontheearthandfellover.但当我努力向前迈步的时候，我发觉我被送出去很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。句型公式倍数as形容词/副词as,Unit4Astronomy:thescienceofthestarsTaskFive-Sentencestructure,【句式点拨】该句型表示“是的几倍”，该句型也可用half,onefourth等词，表示“是的一半/四分之一等”。常见的倍数的表达方式有：(1)倍数as形容词/副词原级as(2)倍数形容词/副词比较级than(3)倍数thesize/height/weight/depth/of(4)倍数asmany/much名词as,Unit4Astronomy:thescienceofthestars,【活学活用】(1)Globalwarmingisheatingtheplanettwiceasquicklyaspreviouslyfeared.全球变暖致使地球加热的速度是人们以前担心的两倍。(2)ThegravityonthesurfaceofMarsisabout_asitisontheearth.(strong)火星表面的引力大约是地球表面引力的三分之一。,Unit4Astronomy:thescienceofthestars,onethirdasstrong,(3)Kenya,alandmorethan_Britain,iseverywhereparched.(size)肯尼亚，一个面积是英国两倍多的地方，四处干旱炎热。(4)Someofthedoctorsarepaidalmost_asthenurses.(much)有些医生的薪水差不多是护士的两倍。,Unit4Astronomy:thescienceofthestars,twicethesizeof,twiceasmuch,Thisproducedachainreaction,whichmadeitpossibleforlifetodevelop.这引起了连锁反应，为生命的发展提供了可能。句型公式makeitpossible使成为可能,Unit4Astronomy:thescienceofthestars,【活学活用】(1)Thegirlknowsthreeforeignlanguages,whichmakesiteasierforhertofindagoodjob.这个女孩懂三门外语，这使她更容易找到一份好工作。(2)Nomatterwhereheis,hemakes_aruletogoforawalkbeforebreakfast.无论他在哪里，他都习惯在早饭前去散散步。(3)Ihate_thatyourenotaround.Andthefactwasthatyoudidntcall.我讨厌你不在身旁，而事实上你也没打电话来。,Unit4Astronomy:thescienceofthestars,it,it,句型及时训.用适当的词或所给词的适当形式填空1Overtheyearsshehadtriedherbest_(block)theterriblememory,butinvain.2Duringthosefouryears,heworkeddayandnight,thus_(improve)histheorygraduallyuntilitwascomplete.3Theargumentremainsextremelyheatedwhethertherearenecessaryconditionsof_(exist)suchaswateronMars.4Wewatched,_(amaze)asfirebrokeoutontheoutsideofthespaceship.,Unit4Astronomy:thescienceofthestars,toblockout,improving,existence,amazed,5Theprofessorconsiders_nogoodreadingwithoutunderstanding.完成句子1Thoughitsachallengingjob,hedidit_(三分之一的时间)ittookme.2Thoughthisisnot_(一样好的一本书)asweexpected,itisstillworthreading.(asas)3_(有)acertaindoubtamongtheworkersastothenecessityofthework.(exist),Unit4Astronomy:thescienceofthestars,it,onethirdthetime,asgoodabook,Thereexisted,4Tobeautifyourcity,alargenumberofoldhousesalongthestreet_(已经被拆除)uptothepresent.(pull)5AnAirFrancejetisreported_(坠毁)intheAtlanticOceanwith228peopleaboard,whichistheairlinesworstdisasterinits75yearhistory.(crash),Unit4Astronomy:thescienceofthestars,havebeenpulleddown,tohavecrashed,.根据提示翻译句子1地球上动植物千姿百态，相互喂哺(feedoff)。有些动物产卵(layeggs)来繁殖后代，有些哺乳动物直接生(givebirthto)幼崽。_2为了更好的生存环境，让我们振作