外研版高中英語選擇性必修第四冊UNIT5 Period5課件

Period5

Unit5

Intotheunknown主題語境人與社會——社會進步與人類文明1．WhatcausedtheancientRomancityofNeápolistobeburiedunderwater?A．Atsunami．B．Theearthquakeruins．C．Extremecoldclimate．D．Thewar．課時練案課文整體教學(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)整齊地堆起；摞起

n．一疊，一摞①(教材原句)Intheverydeepestoceantrenchesthataremorethan8，000metresbelowthesurface，thepressureisequivalentto50aeroplanes

stackedoneontopofanother． ________________________②Therewereastackoffilesawaitingmeonmydesk．

_____________v．(使)整齊地堆起；摞起n．一疊，一摞2．substancen．物質；主旨，主要內容①(教材原句)MostnotableoftheseisChina'sdiscoveryofanice-likesubstance，knownas“fireice”，undertheSouthChinaSea． ____②Thesubstanceofhisargumentwasthattoomanypeoplelivebelowthepovertyline． ______________物質主旨，主要內容1．(學會斷句)Inthesewaters，morethan200metresdeep，wherelightcannotreach，areextraordinarycreatures/thatappear/asiftheyarestraightoutofsciencefiction．[分析]本句是一個主從復合句。句子主干為Inthesewaters，morethan200metresdeep，wherelightcannotreach，areextraordinarycreatures，是倒裝句，其中wherelightcannotreach為非限制性定語從句，修飾先行詞______；thatappearasiftheyarestraightoutofsciencefiction為定語從句，修飾先行詞_________，其中包含asif引導的_________。[翻譯]

_______________________________________________________________________________________________________waterscreatures表語從句在200多米以下，陽光照不到的深水水域里，住著一些看起來就像是直接從科幻小說中走出來的奇異生物。2．(學會斷句)Theresearch/conductedbythesevessels/isgivingscientistsagreaterunderstandingof/howtheseabedwasformed，aswellashelpingidentifyareasfordeep-seadrilling，takingdeep-seaexplorationintoawholenewera．[分析]本句是一個主從復合句。conductedbythesevessels為過去分詞短語作____；howtheseabedwasformed為________。[翻譯]

_____________________________________________________________________________________________________________________定語賓語從句借助這些潛水器所完成的研究有利于科學家進一步了解海床的形成過程，幫助確定深海鉆探區(qū)域，將深海勘探帶入一個嶄新的時代。1．(應用文佳句)Givenourlimitedknowledge，itisperhapsnosurprisethatexplorationoftheoceanscontinuestoleadtodiscoveriesinvariousscientificfields．基于我們有限的認知，探索海洋可以帶來許多科學領域的新發(fā)現(xiàn)，這也許就顯得不足為奇了。2．(應用文佳句)However，weareonlybeginningtoovercomethechallengesofpressure，darknessandextremecoldatvastdepths．然而，我們才剛剛開始克服廣袤的海洋深處的壓強、黑暗和極寒所帶來的挑戰(zhàn)。3．(應用文佳句)Beingatoughenvironmentofcompletedarkness，enormouspressureandintensecold，theoceandepthshavelongbeenbeyondthereachofhumanexploration．深海區(qū)域環(huán)境惡劣，完全黑暗、壓強極大、極度寒冷，長期以來都是人類探索無法企及的區(qū)域。4．(應用文佳句)Humankindisenteringanewageofoceanicdiscovery，andtheworldbeneaththewavesmayonedaybealmostasfamiliartousasthelandwewalkupontoday．人類正走向海洋發(fā)現(xiàn)的新時代，或許有朝一日，我們會像熟悉腳下的土地一樣熟悉那海浪下的世界。(1)keeparecord

保持紀錄breakarecord 打破紀錄setarecord 創(chuàng)造紀錄keeprecords/arecordof 記錄；把……記錄下來onrecord 有記錄的，有記載的(2)Itisrecordedthat... 據記載……1．holdarecord保持紀錄[即學即練]單句語法填空/完成句子①Heplantedalittleappletreeandkept_______(record)ofitsgrowtheverymonth．②Lastyearwasthewarmestyear__record，withglobaltemperature0.68℃abovetheaverage．③據記載，這個地區(qū)曾經發(fā)生過很多次地震。________________therehavebeenalotofearthquakesinthisarea．recordsonItisrecordedthat(1)outofone'sreach

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

伸手做某事reachinto 伸進/進入……之中2．beyondthereachof無法達到；超出……的能力[即學即練]單句語法填空/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我伸手去摸她的臉，發(fā)現(xiàn)她的臉像冰一樣冰冷。I__________________________，whichwasascoldasice．withinintoreachedforthecandyreachedouttotouchherface(教材原句)Lyingunderwatersacrosstheglobeare

anestimatedthreemillionshipwrecks．全球水域下大約有三百萬艘沉船殘骸。1．動詞-ing形式置于句首的完全倒裝句[句式分析]本句是一個完全倒裝句，其正常語序是Anestimatedthreemillionshipwrecksarelyingunderwatersacrosstheglobe。Look！Movingunderthebridgeareagroupofsheep．看！一群羊正在橋下走動。(1)表示地點、方位或時間的副詞，如here，there，in，out，up，down，away，now，then等以及表示方位的介詞短語位于句首時。(2)謂語動詞一般為be動詞或lie，come，go，stand等表示位移的動詞。(3)形容詞/分詞位于句首也可構成全部倒裝。[即學即練]單句語法填空/完成句子①Assoonasthebellrang，out______(rush)thechildren．②______(bury)inthetombwasakingwhodiedmorethan2，000yearsago．③Presentattheeveningparty____(be)ourEnglishteacheryesterday．④躺在地板上的是一個受傷的農家男孩。_________________awoundedpeasantboy．rushedBuriedwasLyingontheflooris(教材原句)Today，some500yearsaftertheEsmeraldasetsail，thereislittle—ifany—landonourplanetleftunexplored．如今，距離“埃斯梅拉達號”起航已有500多年，我們星球上尚未被人類探索的土地已經少之又少了。2．ifany省略結構[句式分析]句中ifany屬于條件狀語從句的省略結構，意為“如果有的話”。Pleasecheckoverthespeechdraftandcorrectthemistakes，ifany．請把講演稿檢查一遍，如果有錯誤，請改正過來。此類省略結構還有：ifnecessary

如果有必要的話ifpossible 如果有可能的話ifever 如果曾經有過的話ifso 如果這樣的話ifnot 如果不是這樣的話[即學即練]用上述省略結構填空/句式升級①YoucancometoBeijingforaholiday．______，I'llshowyouaroundtheSummerPalace．②Areyouready?_______，I'mgoingwithoutyou．③Theclimatehereisquitepleasant，thetemperaturerarely，________，reaching30℃insummer．④Iwanttoavoidtherushhourifitispossible．→Iwanttoavoidtherushhour____________．(省略句)IfsoIfnotifeverifpossible(教材原句)It'sarguedthat

the30thparallelnorthisalineofgreatnaturalenergy，withfrequentearthquakesandvolcaniceruptions．有一種觀點認為，北緯30度線蘊含著巨大的自然能量，經常發(fā)生地震和火山噴發(fā)。3．Itis＋過去分詞＋that...[句式分析]該句為句式“Itis＋過去分詞＋that從句”，it作形式主語，that從句為真正的主語。It'sarguedthatlackingofconfidenceisoneofthemainreasonsforfailure．有一種觀點認為，缺乏自信心是失敗的一個主要原因。常見的“Itis＋過去分詞＋that...”句型還有：Itissaidthat...

據說……Itisagreedthat... 大家一致同意……Itisthoughtthat... 大家認為……Itishopedthat... 人們希望……Itisreportedthat... 據報道……Itisprovedthat... 據證實……[即學即練]單句語法填空/完成句子①It___________(think)thatreadingisasmuchanartasitisascience．②Itwasreported____nopassengerswereinjuredintheaccident．③人們相信音樂節(jié)不僅有意義而且有趣。________________themusicfestivalwillbenotonlymeaningfulbutalsointeresting．isthoughtthatItisbelievedthatⅠ．單句語法填空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．躺在醫(yī)院里的是從廢墟中挖出來的傷員。(完全倒裝句)__________________theinjureddugoutoftheruins．2．據報道，這次事故源于司機的粗心駕駛。(Itis＋過去分詞＋that...)_________________theaccidentresultedfromthedriver'scarelessdriving．LyinginhospitalareItwasreportedthat3．最后，我們拍了合影來記錄下這難忘的經歷。(record)Intheend，wetookagroupphototo______________________thisunforgettableexperience．4．當我們進入森林深處時，煙霧突然彌漫，我們無法看清楚彼此。(reach)Whenwe________________________，suddenlythesmogspreadeverywhereandwewerenotabletoseeeachotherclearly．keeprecords/arecordofreacheddeepintotheforestⅢ．課文語法填空Lyingunderwatersacrosstheglobeareanestimatedthreemillionshipwrecks，all