外研版 (2019)选择性必修 第四册Unit 5 Into the unknown教案配套课件ppt

这是一份外研版 (2019)选择性必修 第四册Unit 5 Into the unknown教案配套课件ppt，共60页。PPT课件主要包含了Reading，deep sea，Biological，“fire ice”，Statistics，Examples，tsunami，fire ice，Writing等内容，欢迎下载使用。
Lk at the picture and answer the questins. D further research if necessary.
What different znes are there in the cean?Which parts f the cean d yu think have been explred?What d yu knw abut the deepest part f the cean?
Epipelagic Zne - The surface layer f the cean is knwn as the epipelagic zne and extends frm the surface t 200 metres (656 feet). It is als knwn as the sunlight zne because this is where mst f the visible light exists. With the light cmes heat. This heat is respnsible fr the wide range f temperatures that ccur in this zne.
Mespelagic Zne - Belw the epipelagic zne is the mespelagic zne, extending frm 200 metres (656 feet) t 1,000 metres (3,281 feet). The mespelagic zne is smetimes referred t as the twilight zne r the midwater zne. The light that penetrates t this depth is extremely faint. It is in this zne that we begin t see the twinkling lights f biluminescent creatures. A great diversity f strange and bizarre fishes can be fund here.
Bthypelagic Zne - The next layer is called the bathypelagic zne. It is smetimes referred t as the midnight zne r the dark zne. This zne extends frm 1,000 metres (3,281 feet) dwn t 4,000 metres (13,124 feet). Here the nly visible light is that prduced by the creatures themselves. The water pressure at this depth is immense, reaching 5,850 punds per square inch. In spite f the pressure, a surprisingly large number f creatures can be fund here. Sperm whales can dive dwn t this level in search f fd. Mst f the animals that live at these depths are black r red in clr due t the lack f light.
Abysspelagic Zne - The next layer is called the abysspelagic zne, als knwn as the abyssal zne r simply as the abyss. It extends frm 4,000 metres (13,124 feet) t 6,000 metres (19,686 feet). The name cmes frm a Greek wrd meaning “n bttm”. The water temperature is near freezing, and there is n light at all. Very few creatures can be fund at these crushing depths. Mst f these are invertebrates such as basket stars and tiny squids. Three-quarters f the cean flr lies within this zne. The deepest fish ever discvered was fund in the Puert Ric Trench(海沟) at a depth f 27,460 feet (8,372 metres).
The different znes in the cean are Sunlight Zne, Twilight Zne, Midnight Zne and Abyssal Zne.
Sunlight Zne, Twilight Zne.
The deepest part f the cean is Abyssal Zne. It is an area where the water depth is abut 2,000–5,000 metres. The trench can be lwered t 6,000 metres. These very deep areas are smetimes called “Super-abyssal znes”. Actually it is the largest eclgical regin n earth.
Lk at the pictures and guess what it is fr.
Read the picture and discuss with yur partner what infrmatin yu get.
China’s new deep-sea manned submersible Fenduzhe, r Striver, set a natinal diving recrd f 10,909 metres in the Challenger Deep, a 11,000-metre chasm lcated at the bttm f the Mariana Trench in the western Pacific Ocean.The successful sea trial verified the varius functins and perfrmances f the submersible as well as China’s breakthrughs in deep-sea equipment and technlgies. It marked China’s entry int the first echeln f deep-sea scientific research and prvided strng technical supprt fr the cuntry’s subsequent deep-sea research.
Read the passage and find ut what has been discvered in the cean depths.
Skim the passage and match the main idea.
Read fr main idea
We are entering a new age f ceanic discvery.
We have little knwledge f Earth’s sea bed.
Many archaelgical finds are made in shallw waters.
There are extrardinary creatures in the deep sea.
The ceans are a valuable surce f natural resurces.
Read fr structure
Para. 1: Intrduce the tpic.
Para. 2-4: Ocean __________.
Para. 2: the _______ f Neaplis
Para.3: amazing __________ discveries
Para. 5: ___________ is entering a new age f ceanic discvery.
Para.4: __________ f natural resurces
Diving deep
Read fr details
Scan the passage and cmplete the diagram.
OVER THE CENTURIES: sailing acrss ceans t explre Earth’s furthest crners
Ocean explratin
MODERN AGE: explring 1___________
2______________ explratin Finding ancient ruins in 3________________. Wrking t vercme challenges and make discveries at 4______________.Example: 5__________________________
Archaelgical
shallw waters
vast depths
the ruins f Neaplis
6 _____________explratin Cntaining abut 90 per cent f 7_______________. Helping cmprehend 8__________________________.Examples: 9 _______________ 10 _______________ 11___________________________________________ _________________
the planet’s fish
bne-white cral
the capacity fr life n ur planet
the barreleye
life t be fund even arund the deep-sea vlcanic penings
Discvery f natural resurces Discvering new natural resurces. Studying 12 _________________. Identifying areas fr 13 ____________________.Examples: 14 _______________________ 15 _______________________
deep-sea drilling
the sea bed
China’s underwater vessels
What has been discvered in the cean depths.
Shipwrecks such as that f the Esmeralda, ruins f ancient cities like Neáplis, extrardinary deep-sea creatures such as bne-white cral and the barreleye, and the substance knwn as “fire ice” have been discvered in the cean depths.
Read fr writing skills
What writing skills are used in the passage?
Statistics & examplesThe discurse markers(语篇标记)
As yu read, ntice the discurse markers used in the text, eg in additin, als, hwever, furthermre, as well as. These markers functin like rad signs, helping yu cnnect ideas and understand the writer’s attitude and pinins.
discurse markers
whle city buried beneath the wavesthe ancient Rman city f Neaplislcatin:______________________time: __________________cause:__________________
ff the cast f Tunisia
the 4th century
Examples in para. 2
the ancient Rman city f Neaplis
Examples in para. 3
transparent frehead eyes can lk upwards
4000 years ld
life t be fund even arund the deep sea vcalnic penings
Examples in para. 4
China’s achievementsNew natural resurce: __________Underwater vessels: ___________________________
Jialng & Shenhai Yngshi
Tip: The use f statistics and examples make the passage mre cnvincing.
Why d yu think the authr uses statistics in the passage?What ther examples f cean explratin d yu knw f? Share ne with the class.What d yu think drives the explratin f the ceans?What cmmn message d the tw reading passages in this unit cnvey? Hw d they each build upn this idea?
Why d yu think the authr uses statistics in the passage?What ther examples f cean explratin d yu knw f? Share ne with the class.
The use f statistics makes the passage mre cnvincing.
Chart f the Califrnia CastThis recnnaissance chart f the Califrnia cast was created by Captain James Alden in 1852. In 1857 James Alden discvered Califrnia’s Mnterey Canyn, the first knwn submarine valley. A submarine valley is a lng, deep depressin in the cean flr.
What d yu think drives the explratin f the ceans?
The ceans make up 70% f the earth’s ttal area. Large numbers f marine animals and plants are imprtant surces f fd fr human beings. Therefre, it is very imprtant fr us t understand the wrld’s ceans. In additin t cncerns abut maritime security and ecnmic interests, explratin f the seabed will satisfy human’s curisity and thirst fr the unknwn knwledge.
What cmmn message d the tw reading passages in this unit cnvey? Hw d they each build upn this idea?
Bth passages cnvey the message that humans have the desire and means t explre the unknwn.The first passage des this by lking at ur fascinatin with histry’s greatest mysteries, while the secnd passage lks at pineering explratin f Earth’s ceans.
Give a talk abut the influences f cean explratin n yur daily life.
Lk at the diagram belw and brainstrm examples f hw cean explratin affects yur daily life.
Trade and ecnmy
Cultural exchange
Transprt and travel
Fd and natural resurces
Envirnment and cnservatin
Influences f cean explratin
Organise yur talk by cmpleting the diagram with yur examples.
Ocean explratin affects ur daily life in many ways.
The air we breathe: The cean prduces ver half f the wrld’s xygen and absrbs 50 times mre carbn dixide than ur atmsphere.
Climate regulatin: Cvering 70 percent f the Earth’s surface, the cean transprts heat frm the equatr t the ples, regulating ur climate and weather patterns.
Fd: The cean prvides mre than just seafd; ingredients frm the sea are fund in surprising fds such as peanut butter and symilk.
Medicine: Many medicinal prducts cme frm the cean, including ingredients that help fight cancer, arthritis, Alzheimer’s disease, and heart disease.
Recreatin: Frm fishing t bating t kayaking and whale watching, the cean prvides us with many unique activities.
Give yur talk t the class.
The deep sea is Earth’s last frntier.
We shuld prtect deep-sea ecsystems t cntribute t the future sustainable develpment and eclgical balance f the earth.
Tday,sme 500 years after the Esmeralda set sail,there is little—if any—land n ur planet left unexplred. 今天,在“艾斯梅拉达”号起航大约500年后,我们星球上几乎没有什么土地没有被探索过。◆ set sail 起航;开航【词汇拓展】sail n. 帆/ v. 航行set sail fr=sail fr　　　向……航行;朝……航行set sail acrss/sail acrss航行穿过……sail int/ut f驶入/驶出The white sails billw with the breezes.I shall get myself a little bat and sail it arund the wrld.
单句语法填空(1)On Zheng He’s first vyage,he sailed 　　　　　the Indian Ocean. (2)The captain said gdbye t the king and queen and sailed 　　　　　England. 
In the very deepest cean trenches that are mre than 8,000 metres belw the surface,the pressure is equivalent t 50 aerplanes stacked ne n tp f anther. 海面以下8 000多米的最深的海沟中的压力相当于50架飞机叠在一起。◆ equivalent adj.等同的;等值的;相当的【词汇拓展】equivalent n.　　　 相等的东西;对应词be equivalent t与……相等;与……相同One kilmetre is equivalent t tw li. 1千米为2里。This wrd has n equivalent in English. 这个单词在英语中没有对应词。
单句语法填空(1)Eight kilmetres is rughly equivalent 　　　　　five miles. (2)Is there a French wrd that is 　　　　　exact equivalent f the English wrd “hme”? 
The Jialng even hlds the recrd fr the deepest dive by a manned submarine,at 7,062 metres,giving China its place alngside the wrld’s tp cean explrers. “蛟龙”号甚至保持了载人潜水艇下潜最深的纪录,达到7 062米,这使中国与世界上顶尖的海洋探险国并驾齐驱。◆ hld the recrd 保持纪录【词汇拓展】keep a recrd f　　　　　 把……记录下来break/set/keep a recrd打破/创造/保持纪录n recrd记录在案的make a recrd录制唱片It is recrded that...据记载……
单句语法填空(1)Last year was the warmest year 　　　　　　recrd,with glbal temperature 0.68℃ abve the average. (2)　　　 is recrded that there have been a lt f earthquakes in this area. 完成句子(3)When yu 　　　　　　　　　(录制唱片),it’s different frm a cncert,because yu leave smething there. (4)The gld price 　　　　 　　　　　(创造新纪录) f ver $1,900 an unce this year. 
make a recrd
set a new recrd
Being a tugh envirnment f cmplete darkness,enrmus pressure and intense cld,the cean depths have lng been beynd the reach f human explratin. 海洋深处完全黑暗、压力巨大且极度寒冷的恶劣环境,早已超出人类的探测范围。◆ beynd the reach f 超出……范围;无法达到【词汇拓展】beynd ne’s reach/ut f ne’s reach 超出……范围;无法达到within ne’s reach=within the reach f 够得着;在……伸手可及的范围内The apples n the tree are beynd/ut f my reach. 我够不到树上的苹果。I like t place refreshments within my reach. 我喜欢把点心放在我伸手可及之处。
完成句子(1)演化的理论超乎我的想象。The thery f evlutin is 　　　　 　　　　　　　my imaginatin. (2)把手刚好在我够不着的地方。The handle was just 　　　　　　　　　　　. (3)请把词典放在我伸手够得着的地方。Please put the dictinary 　　　　　　　　　　　　　. 
beynd the reach f　
beynd my reach
within my reach
Writing abut the unexplained
Hw much d yu knw abut the pictures?
Egyptian pyramids
Maya pyramid
Ancient Babyln
The 30th Parallel Nrth
Can yu tell anything abut them in cmmn？
Lk at the pictures and talk abut what yu knw abut the mysterius 30th parallel nrth.
Read the magazine article and answer the questins.
Alng a special line f latitude, knwn as the 30th parallel nrth, lie numerus sites f ancient civilisatins and impressive natural features.Ancient civilisatins appeared n the parallel, including Babyln, with its famus twer; Egypt, with its pyramids; China, with its Sanxingdui culture, etc. These civilisatins appeared at a similar time, and all develped advanced brnze-making techniques. Were they part f a single super-civilisatin, as sme think?
A LONG LINE OF MYSTERIES
It’s argued that the 30th parallel nrth is a line f great natural energy, with frequent earthquakes and vlcanic eruptins. This creates amazing natural features, including Munt Qmlangma, the Dead Sea, and rivers, such as the Nile, the Mississippi and the Yangtze. Lacking any cncrete evidence, sme even claim it was supernatural pwers!Scientists, hwever, dispute these theries. It’s mre likely, they argue, that civilisatins arse n the 30th parallel nrth because the climate there is generally warm and wet. Majr tectnic plates meet at this latitude, causing earthquakes, which helped frm the Himalayas. The rest, they say, is either cincidence r fantasy.
Why is the 30th parallel nrth mysterius?What are sme unusual explanatins fr it?What are sme pssible scientific explanatins?
The 30th parallel nrth is mysterius because it is where numerus sites f ancient civilisatins and impressive natural features lie.
Sme believe that the 30th parallel nrth is a line f great natural energy, with frequent earthquakes and vlcanic eruptins, and thers even claim that its amazing natural features were caused by supernatural pwers.
Pssible scientific explanatins fr the 30th parallel nrth include the generally warm and damp climate that made it a gd place fr civilisatins t develp, and the fact that it is where majr tectnic plates meet.
Analyze the main functin f each paragraph.
Overview, what is the unexplained phenmenn？
Why is it mysterius?
What nn-scientific explanatins are there?
Hw d scientists explain it?
Plan an article abut an unexplained phenmenn. D further research if necessary.
The Bermuda TriangleFar belw the surface f the Nrth Atlantic Ocean, in a rughly triangular area knwn as the Bermuda Triangle, lie mre than 50 shipwrecks and 20 plane wrecks. What makes these wrecks s mysterius is that the cause f their fate remains largely unknwn - ships were abandned withut apparent reasn, distress signals were never sent and aircraft were lst withut trace. Sme believe that supernatural frces are respnsible, while thers put the accidents and disappearances dwn t cincidence.
Scientific theries, meanwhile, include pilt errr when trying t navigate the area, and huge “rgue waves” caused by terrible strms. Althugh many ships and planes crss the Bermuda Triangle withut incident, the stries behind thse dmed vessels’ fates cntinue t capture peple’s imaginatins.
Presentingideas
Marcel Prust, (brn July 10, 1871, Auteuil, near Paris, France — died Nv. 18, 1922, Paris), French nvelist. He was best knwn fr his seven-vlume fictin In search f Lst Time.  
D yu knw Marcel Prust?
Read the sentence and answer the questins.
What is yur understanding f the sentence?What des Prust mean by “The nly true vyage f discvery”?
Share yur pinin f this sentence and make ntes. D further research if necessary.
What d yu think f Prust’s view n the way t explre the wrld?____________________________________________________________________________________________________________________________________________________________________________________________________________________________What is yur way t explre the wrld? Give an example.____________________________________________________________________________________________________________________________________________________________________________________________________________________________
Prepare a speech abut what explratin means t yu. Cnsider the fllwing:
1 the structure f yur speech2 useful wrds, expressins and structures3 helpful public speaking skills
Give yur speech t the class.
Review language pints.Talk with yur friends abut hw t pen up ur planet’s final planet thrugh clser scientific, ecnmic and cultural peratin.Plish yur article abut an unexplained phenmenn.