外研版高中英语选择性必修第四册UNIT5 Period6课件

Period6

Unit5

Intotheunknown主题语境人与社会——社会进步与人类文明本单元的写作任务是写一篇介绍大自然神秘现象的文章，属于说明文。此类文章一般用言简意赅的语言说明事物，阐明事理，从而给读者提供知识。写一篇关于不解之谜的文章课时学案写作(Writing)(一)基本框架1．开头：引出要介绍的事物；2．主体：对事物进行详细说明；3．结尾：总结全文或写出自己的感受。(二)常用表达1．TherehavebeenreportsofmonstersinLakeTianchi，althoughnoonehasseenonecloseup．一直就有关于天池怪物的报道，尽管还不曾有人近距离地目睹过。2．TheBigfoot，whichwasfirstseeninNorthAmerica，isoneoftheworld-famousmysteriouscreatures．大脚怪是在北美洲首次被看到的，它是世界著名的神秘生物之一。3．Hesaidthatheandhisfamilywereabletoseethemonsterclearlybecausetheweatherwasfineandthelakewascalm．他说他和他的家人看清了怪物，因为当时天气好，湖水平静。4．Heclaimstohaveseenaroundblackcreaturemovingquicklythroughthewater．他声称看见一个黑黑的、圆圆的动物在水中快速游动。5．Theremarkablethingwasthattheyshowednosignsofdecomposition．值得注意的是，它们没有腐烂的迹象。6．Hedeductedthatthepyramidshapewasresponsibleforpreservingthesecreatures．他推断金字塔的形状是为了保护这些生物。7．In630AD，theancientcityofLoulandisappearedmysteriously．Whatpeoplecanseenowadaysisonlyitsruins．公元630年，楼兰古城神秘地消失了。现在人们看到的只是它的废墟。8．Thoughscientistsworldwidearestillattemptingtogettothebottomofthisproblem，nohardproofhasbeenabletothrowlightonitsofar．尽管世界范围的科学家仍然试图解开这个问题的疑团，但迄今为止没有确凿的证据加以证明。“百慕大三角”一直是一个未解之谜，许多船只和飞机曾经在这里神秘失踪，没有留下任何痕迹。请写一篇介绍“百慕大三角”的英语短文。注意：1．词数80左右；2．可以适当增加细节，以使行文连贯。_________________________________________________________________________________________________________________________________________________________________________________[审题构思]1．确定体裁：本文为未解之谜介绍，属于说明文；2．确定人称：本文的主要人称应为第三人称；3．确定时态：本文的主体时态为一般现在时和一般过去时；4．确定内容：①介绍位置；②介绍发生的怪事；③人们的猜测。[遣词造句]1．在自然界有很多未解之谜，“百慕大三角”就是其中特别的一个。_________________________________inthenaturalworld，ofwhichtheBermudaTriangleisaparticularone．2．这是位于百慕大和佛罗里达之间大西洋西部的一片区域。_____________ofthewesternAtlanticbetweenBermudaandFlorida．3．在这个地区发生了一些奇怪的事情。____________________________inthisarea．TherearemanyunexplainedmysteriesThisisanareaSomestrangeincidentshappened4．自1945年开始，数以百计的船只和飞机，以及一千多人在这里失踪，而且没有留给他们逃跑的机会。Since1945，hundredsofshipsandplanesandoverathousandpeoplehavedisappeared，and________________________________wasleft．5．有些人认为是外星人到了那里并把一切都带走的。Somethinkaliensmighthavearrivedthereand__________________．nochanceforthemtomakeagetawaytakeneverythingaway6．另有一些人认为它们可能是由那里特别的天气造成的。Othersbelievetheymight____________________________there．7．没有人能给出一个令人信服的原因。Noonecan___________________________．8．或许在将来随着科技的发展我们能找到答案。Maybeinthefuturewecanfindtheanswer_____________________________________________．becausedbyspecialweathergiveabelievablereasonwiththedevelopmentofscienceandtechnology[句式升级]1．用定语从句把遣词造句中的句2和句3连接起来______________________________________________________________________________________________________________________2．用动词-ing形式作状语改写遣词造句中的句4______________________________________________________________________________________________________________________ThisisanareaofthewesternAtlanticbetweenBermudaandFlorida，wheresomestrangeincidentshappened．Since1945，hundredsofshipsandplanesandoverathousandpeoplehavedisappeared，leavingnochanceforthemtomakeagetaway．[连句成篇](注意使用适当的衔接过渡词语)_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________[参考范文]Therearemanyunexplainedmysteriesinthenaturalworld，ofwhichtheBermudaTriangleisaparticularone．ThisisanareaofthewesternAtlanticbetweenBermudaandFlorida，wheresomestrangeincidentshappened．Since1945，hundredsofshipsandplanesandoverathousandpeoplehavedisappeared，leavingnochanceforthemtomakeagetaway．Somethinkaliensmighthavearrivedthereandtakeneverythingaway．Othersbelievetheymightbecausedbyspecialweatherthere．Butnoonecangiveabelievablereason．Maybeinthefuturewecanfindtheanswerwiththedevelopmentofscienceandtechnology．[词块积累]1．arminarm臂挽臂2．onone'sknees跪着3．lieonone'sback仰卧4．elbowone'sway挤着向前走5．putone'sfeetup跷起脚休息动作描写肢体6．holdoutone'sarms张开双臂7．takeone'sarm挽住某人的胳膊8．thumbupatsb．朝某人竖起大拇指9．cupone'shandsoversth．用双手捂住某物10．berushedoffone'sfeet忙得脚不沾地[佳句积累]1．SuddenlyIfeltasharppaininmyshoulder．我突然感到肩部一阵剧痛。2．Sheslippedoutofbedandtiptoedtothewindow．她溜下床，踮起脚尖走向窗户。3．Herhandstrembledassheliftedtheglasstoherlips．她的手颤抖着把杯子送到唇边。4．Suddenlyherkneesweakenedandshefelltothefloor．突然她的膝盖一软，摔倒在地上。5．Hesprangtohisfeetandrushedtogivemeabearhug．他突然跳起来，冲过来给我一个熊抱。6．Isawthemmakingtheirway，handinhand，downthepath．我看到他们手拉手沿着小路朝前走。7．Icuppedmyhandoverthephonesotheycouldn'thearme．我用手捂住电话，免得他们听到我的话。8．WhenIaskedhimwhyhehaddoneit，hejustshruggedhisshoulders．当我问他为什么要这么做时，他只是耸了耸肩。9．Hewaiteduntilhisdaughterwasasleep，thentiptoedquietlyoutoftheroom．他等女儿睡着后才蹑手蹑脚地悄悄走出房间。10．Hestruggledtoruntowardsthefinishingline，withhismouthdryandhislegstrembling．他继续努力向终点跑去，他嘴巴干涩，双腿颤抖。阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。StrangeFootprintsintheSnowJonathanwokeupandlookedaround．Foramoment，hewasn'tsurewherehewas．Thenheremembered．Heandhissister，Julie，werevisitingAuntGwen．TheyhadspentyesterdayhelpingAuntGwencleanherbasement．Todaytheywouldhavetimetoplay．Helookedoutthewindow．Freshsnowcoveredtheground．Hecouldhardlywaittogooutside．Jonathandressedandhurrieddownstairstothekitchen．“Hi，sleepyhead，”saidAuntGwen．“Juliehasalreadyeatenheroatmeal．She'soutside．”“That'swhereI'mgoingassoonasIfinishbreakfast，”Jonathansaid．Ashorttimelater，hezippeduphiscoat，putonhisboots，andwalkedoutthefrontdoor．Thesunmadethesnowsparkle．Helookedaround．Hedidn'tseehissister，buthesawsomethingelse．StrangefootprintsinthesnowtrackedacrossAuntGwen'syard．“They'rewaytoobigtobeJulie's．Theylookliketheybelongtoadinosaur，”Jonathansaid．Thenheadded，“Butthat'ssilly．Dinosaursarenotaroundanymore．”Helookedcloser：Thefootprintsweretheshapeofaverylargeoval(椭圆)withastem．“Maybetheybelongtoanelephantorahippothatescapedfromthezoo，”hethought．Heheldhisbreathandlistened．Hedidn'thearanything．Herememberedabookhe'dseenearlieronAuntGwen'sshelf．Itwasabookaboutanimaltracks．Hedashedinsidetogetit．Thebookhadpicturesofanimalsandthetrackstheymade．Heturnedthepagesonebyone，butnoneofthephotoslookedlikethefootprintsinAuntGwen'syard．Hestaredatthosefootprintsagain．Ananimalthatmadesuchbigtrackswouldhavetobeheavy．Itstracksshouldsinkfardownintothesnow．Yetthesefootprintsseemedtoskimacrossthetop．Howcanthatbe?Hewondered．Jonathannoticedsomethingelse．ThetracksneverleftAuntGwen'syard．Instead，theyturnedandwentaroundthehouse．“Maybetheanimalisstillhere，”hewhispered．注意：1．续写词数应为150左右；2．请按如下格式作答。Quietly，hebeganfollowingthefootprints．__________________________________________________________________________________________________________________________________________________________________________________________________Thatwaswhenhesawher—hissister，Julie．______________________________________________________________________________________________________________________________________[参考范文]Quietly，hebeganfollowingthefootprints．Hedidn'twanttoscaretheanimalaway．Therewasnothinginsightexcept