外研版高中英语选择性必修第四册UNIT5 Period5课件

Period5

Unit5

Intotheunknown主题语境人与社会——社会进步与人类文明1．WhatcausedtheancientRomancityofNeápolistobeburiedunderwater?A．Atsunami．B．Theearthquakeruins．C．Extremecoldclimate．D．Thewar．课时练案课文整体教学(Developingideas)√2．Accordingtothebiologicaldiscoveries，whichofthefollowingisRIGHT?A．Mostoftheplanet'sfishlivedeepintotheocean．B．Creaturescan'tlivewithoutlight．C．Bone-whitecoralgrowsfastbelowtheocean'ssurface．D．Thereisnolifearoundthedeep-seavolcanicopenings．√3．WhichoftheachievementsmakesChinaoneoftheworld'stopoceanexplorers?A．Thediscoveryof“fireice”．B．ThediscoveryoftheruinsofNeápolis．C．ThediscoveryoftheEsmeralda．D．China'svessel，Jiaolong，holdstherecordforthedeepestdivebyamannedsubmarine．√4．Whatistheauthor'sattitudetooceanexploration?A．Indifferent． B．Optimistic．C．Pessimistic． D．Cautious．√1．stackv．(使)整齐地堆起；摞起

n．一叠，一摞①(教材原句)Intheverydeepestoceantrenchesthataremorethan8，000metresbelowthesurface，thepressureisequivalentto50aeroplanes

stackedoneontopofanother． ________________________②Therewereastackoffilesawaitingmeonmydesk．

_____________v．(使)整齐地堆起；摞起n．一叠，一摞2．substancen．物质；主旨，主要内容①(教材原句)MostnotableoftheseisChina'sdiscoveryofanice-likesubstance，knownas“fireice”，undertheSouthChinaSea． ____②Thesubstanceofhisargumentwasthattoomanypeoplelivebelowthepovertyline． ______________物质主旨，主要内容1．(学会断句)Inthesewaters，morethan200metresdeep，wherelightcannotreach，areextraordinarycreatures/thatappear/asiftheyarestraightoutofsciencefiction．[分析]本句是一个主从复合句。句子主干为Inthesewaters，morethan200metresdeep，wherelightcannotreach，areextraordinarycreatures，是倒装句，其中wherelightcannotreach为非限制性定语从句，修饰先行词______；thatappearasiftheyarestraightoutofsciencefiction为定语从句，修饰先行词_________，其中包含asif引导的_________。[翻译]

_______________________________________________________________________________________________________waterscreatures表语从句在200多米以下，阳光照不到的深水水域里，住着一些看起来就像是直接从科幻小说中走出来的奇异生物。2．(学会断句)Theresearch/conductedbythesevessels/isgivingscientistsagreaterunderstandingof/howtheseabedwasformed，aswellashelpingidentifyareasfordeep-seadrilling，takingdeep-seaexplorationintoawholenewera．[分析]本句是一个主从复合句。conductedbythesevessels为过去分词短语作____；howtheseabedwasformed为________。[翻译]

_____________________________________________________________________________________________________________________定语宾语从句借助这些潜水器所完成的研究有利于科学家进一步了解海床的形成过程，帮助确定深海钻探区域，将深海勘探带入一个崭新的时代。1．(应用文佳句)Givenourlimitedknowledge，itisperhapsnosurprisethatexplorationoftheoceanscontinuestoleadtodiscoveriesinvariousscientificfields．基于我们有限的认知，探索海洋可以带来许多科学领域的新发现，这也许就显得不足为奇了。2．(应用文佳句)However，weareonlybeginningtoovercomethechallengesofpressure，darknessandextremecoldatvastdepths．然而，我们才刚刚开始克服广袤的海洋深处的压强、黑暗和极寒所带来的挑战。3．(应用文佳句)Beingatoughenvironmentofcompletedarkness，enormouspressureandintensecold，theoceandepthshavelongbeenbeyondthereachofhumanexploration．深海区域环境恶劣，完全黑暗、压强极大、极度寒冷，长期以来都是人类探索无法企及的区域。4．(应用文佳句)Humankindisenteringanewageofoceanicdiscovery，andtheworldbeneaththewavesmayonedaybealmostasfamiliartousasthelandwewalkupontoday．人类正走向海洋发现的新时代，或许有朝一日，我们会像熟悉脚下的土地一样熟悉那海浪下的世界。(1)keeparecord

保持纪录breakarecord 打破纪录setarecord 创造纪录keeprecords/arecordof 记录；把……记录下来onrecord 有记录的，有记载的(2)Itisrecordedthat... 据记载……1．holdarecord保持纪录[即学即练]单句语法填空/完成句子①Heplantedalittleappletreeandkept_______(record)ofitsgrowtheverymonth．②Lastyearwasthewarmestyear__record，withglobaltemperature0.68℃abovetheaverage．③据记载，这个地区曾经发生过很多次地震。________________therehavebeenalotofearthquakesinthisarea．recordsonItisrecordedthat(1)outofone'sreach

够不着；力所不能及之处withinone'sreach 伸手可及(2)reachfor 伸手去拿reachoutto 把手伸向reachouttodosth．

伸手做某事reachinto 伸进/进入……之中2．beyondthereachof无法达到；超出……的能力[即学即练]单句语法填空/完成句子①WhenIstudyEnglish，Iliketoputmydictionary______myreachsothatIcanrefertoitwhennecessary．②Themanreached____hispocketandplacedfourcoinsinmyhand．③他本能地伸手去拿背包口袋里的糖。Instinctively，he___________________inthepocketofhisbackpack．④我伸手去摸她的脸，发现她的脸像冰一样冰冷。I__________________________，whichwasascoldasice．withinintoreachedforthecandyreachedouttotouchherface(教材原句)Lyingunderwatersacrosstheglobeare

anestimatedthreemillionshipwrecks．全球水域下大约有三百万艘沉船残骸。1．动词-ing形式置于句首的完全倒装句[句式分析]本句是一个完全倒装句，其正常语序是Anestimatedthreemillionshipwrecksarelyingunderwatersacrosstheglobe。Look！Movingunderthebridgeareagroupofsheep．看！一群羊正在桥下走动。(1)表示地点、方位或时间的副词，如here，there，in，out，up，down，away，now，then等以及表示方位的介词短语位于句首时。(2)谓语动词一般为be动词或lie，come，go，stand等表示位移的动词。(3)形容词/分词位于句首也可构成全部倒装。[即学即练]单句语法填空/完成句子①Assoonasthebellrang，out______(rush)thechildren．②______(bury)inthetombwasakingwhodiedmorethan2，000yearsago．③Presentattheeveningparty____(be)ourEnglishteacheryesterday．④躺在地板上的是一个受伤的农家男孩。_________________awoundedpeasantboy．rushedBuriedwasLyingontheflooris(教材原句)Today，some500yearsaftertheEsmeraldasetsail，thereislittle—ifany—landonourplanetleftunexplored．如今，距离“埃斯梅拉达号”起航已有500多年，我们星球上尚未被人类探索的土地已经少之又少了。2．ifany省略结构[句式分析]句中ifany属于条件状语从句的省略结构，意为“如果有的话”。Pleasecheckoverthespeechdraftandcorrectthemistakes，ifany．请把讲演稿检查一遍，如果有错误，请改正过来。此类省略结构还有：ifnecessary

如果有必要的话ifpossible 如果有可能的话ifever 如果曾经有过的话ifso 如果这样的话ifnot 如果不是这样的话[即学即练]用上述省略结构填空/句式升级①YoucancometoBeijingforaholiday．______，I'llshowyouaroundtheSummerPalace．②Areyouready?_______，I'mgoingwithoutyou．③Theclimatehereisquitepleasant，thetemperaturerarely，________，reaching30℃insummer．④Iwanttoavoidtherushhourifitispossible．→Iwanttoavoidtherushhour____________．(省略句)IfsoIfnotifeverifpossible(教材原句)It'sarguedthat

the30thparallelnorthisalineofgreatnaturalenergy，withfrequentearthquakesandvolcaniceruptions．有一种观点认为，北纬30度线蕴含着巨大的自然能量，经常发生地震和火山喷发。3．Itis＋过去分词＋that...[句式分析]该句为句式“Itis＋过去分词＋that从句”，it作形式主语，that从句为真正的主语。It'sarguedthatlackingofconfidenceisoneofthemainreasonsforfailure．有一种观点认为，缺乏自信心是失败的一个主要原因。常见的“Itis＋过去分词＋that...”句型还有：Itissaidthat...

据说……Itisagreedthat... 大家一致同意……Itisthoughtthat... 大家认为……Itishopedthat... 人们希望……Itisreportedthat... 据报道……Itisprovedthat... 据证实……[即学即练]单句语法填空/完成句子①It___________(think)thatreadingisasmuchanartasitisascience．②Itwasreported____nopassengerswereinjuredintheaccident．③人们相信音乐节不仅有意义而且有趣。________________themusicfestivalwillbenotonlymeaningfulbutalsointeresting．isthoughtthatItisbelievedthatⅠ．单句语法填空1．Pleasehelpmetocorrectthespellingmistakes，if___，inmycomposition．2．Foramomentnothinghappened，andthen_____(come)voicesallshoutingtogether．3．Duetoglobalwarming，theyexperiencedthewarmestyear__recordlastyear．anycameon4．It__________(believe)thattheexistenceofrareanimalshasmadeourworldcolorfulandfulloflife．5．Theapplesonthetreeare_______thereachoftheboy，sohehadtoaskhisbrotherforhelp．isbelievedbeyondⅡ．完成句子1．躺在医院里的是从废墟中挖出来的伤员。(完全倒装句)__________________theinjureddugoutoftheruins．2．据报道，这次事故源于司机的粗心驾驶。(Itis＋过去分词＋that...)_________________theaccidentresultedfromthedriver'scarelessdriving．LyinginhospitalareItwasreportedthat3．最后，我们拍了合影来记录下这难忘的经历。(record)Intheend，wetookagroupphototo______________________thisunforgettableexperience．4．当我们进入森林深处时，烟雾突然弥漫，我们无法看清楚彼此。(reach)Whenwe________________________，suddenlythesmogspreadeverywhereandwewerenotabletoseeeachotherclearly．keeprecords/arecordofreacheddeepintotheforestⅢ．课文语法填空Lyingunderwatersacrosstheglobeareanestimatedthreemillionshipwrecks，all