高中英語選擇性必修四 Unit 3　Section A　Reading and Thinking 課件

1、Unit 3SEA EXPLORATION素養(yǎng)導(dǎo)航晨讀晚誦素養(yǎng)導(dǎo)航晨讀晚誦Green Sea TurtlesGreen sea turtles are the worlds largest species of hard-shelled sea turtle.While most of them weigh about 136 to 181 kilograms,some can be as heavy as 204 kilograms.These turtles are found nesting along the coastline of more than 80 countries,wi

2、th the largest nesting populations found in Costa Rica and Australia.素養(yǎng)導(dǎo)航晨讀晚誦Green sea turtles spend most of their lives underwater,where they can rest for up to five hours at a time before coming up for air.Green sea turtles are also known to sunbathe on land.Unlike most other sea turtles,adult gre

3、en sea turtles eat a primarily plant-based diet consisting of seaweed and sea grass.Scientists believe these green foods give the sea turtles fat its green colour.The shell of the green sea turtle is usually a shade of brown or olive.Similar to other sea turtles,green sea turtles migrate long distan

4、ces between their feeding grounds and their nesting sites,with recorded distances of longer than 2,600 kilometres.素養(yǎng)導(dǎo)航晨讀晚誦Female green sea turtles leave the water in order to lay eggs on the beach and will choose the same nesting spot as where they were born.A female will dig out a nest and lay abou

5、t 115 eggs.Then shell cover the eggs with sand and return to the sea.After about two months,the babies will hatch from their eggs.The first few years of a green sea turtles life are spent floating at sea,where they feed on plankton(浮游生物).As they grow older,the turtles move to waters along the coast

6、where they find sea grass to eat.Adult green sea turtles face many threats,primarily from humans,including injuries from boats,being caught in fishing nets and pollution.Newly hatched sea turtles are also at risk of being hunted by animals such as birds,crabs,and raccoons as they move from their nes

7、ts out to the sea.素養(yǎng)導(dǎo)航晨讀晚誦詞海拾貝coastline n.海岸線sunbathe vt.曬日光浴primarily adv.主要地migrate vt.遷徙hatch vt.孵化素養(yǎng)導(dǎo)航晨讀晚誦典句欣賞Green sea turtles spend most of their lives underwater,where they can rest for up to five hours at a time before coming up for air.譯文:綠海龜?shù)囊簧蟛糠侄荚谒露冗^,在那里它們可以一次休息五個小時,然后再上來呼吸空氣。分析:本句是一個復(fù)合

8、句。Green sea turtles spend.為主句,where they can rest for up.是定語從句,before coming up for air是介詞短語作時間狀語。素養(yǎng)導(dǎo)航晨讀晚誦探究思辨1.What do sea turtles and green sea turtles have in common?2.What do you think is the main threat to green sea turtles?答案1.They both migrate long distances between their feeding grounds and

9、their nesting sites.2.We humans.Section AReading and Thinking.知識體系圖解 重點(diǎn)詞匯 1.merchant n. adj. 2.fleet n. 3.behold vt.4.royal adj. 5.spice n. 6.maritime adj. 商人;批發(fā)商 海上貨運(yùn)的艦隊(duì);機(jī)群;車隊(duì)看;看見皇家的;王室的;高貴的(調(diào)味)香料 海的;海運(yùn)的;海事的7. n.故事;敘述8. vt.擴(kuò)展;使伸長;延長9. vt.商定;達(dá)成(協(xié)議)vi.談判;磋商;協(xié)商10. n.等級;水平;聯(lián)合會;聯(lián)賽11. vi.& vt.(使)撤回;撤離12.

10、 n.航道;海峽;頻道13. n.紐帶;關(guān)系vt.& vi.增強(qiáng)信任關(guān)系;使牢固結(jié)合taleextendnegotiateleaguewithdrawchannelbond重點(diǎn)短語1. 起航;開航2. 獨(dú)領(lǐng)風(fēng)騷3. 退出;撤回4. 在手頭;可供使用5.search for6.become known as7.develop relations with8.under the command of9.for the benefit ofset sailin a league of ones ownwithdraw fromin hand尋找;搜尋作為而著名 與發(fā)展關(guān)系 在的指揮下為了的利益重點(diǎn)句

11、式Over the centuries,further trading allowed more exploration of the regions to the west of China,as recorded in Du Huans Record of My Travels in the eighth century.閱讀導(dǎo)學(xué)A.閱讀P26-27課文內(nèi)容,匹配段落大意。1.Part 1(Para.1)A.Zheng Hes voyage to the west.2.Part 2(Para.2) B.The Belt and Road Initiative.3.Part 3(Para.3

12、) C.How the Silk Road came into being.4.Part 4 (Paras.4-5) D.Chinas participation in some important projects.5.Part 5 (Para.6) E.China will reach out across the sea far into the future.6.Part 6 (Para.7) F.Mankinds greatest achievements result from trade and curiosity.答案1.F2.C3.A4.B5.D6.EB.根據(jù)P26-27課文

13、內(nèi)容,選擇正確答案。1.What inspired European explorers to search for sea routes from west to east?A.Trade and curiosity. B.The tales of Marco Polo.C.The tales of Columbus.D.Merchants and explorers.答案B 2.What did the trade deals between merchants from different countries result in?A.Further exploration of the

14、oceans.B.Mankinds greatest achievements.C.Construction of the ancient Silk Road.D.Better understanding of each others culture.3.Zheng He and his fleets sailed as far as .A.the Indian OceanB.the South China SeaC.the east coast of AfricaD.the mouth of the Red Sea答案D 答案C 4.Why is there an urgent need t

15、o study the Arctic?A.To promote foreign trade.B.To look for more natural resources.C.To strengthen the bonds between countries.D.To know more about climate change and its effects.答案D 重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)1.However,merchants and explorers from the East set sail from east to west many years before Columbus fir

16、st did.(P26)然而,在哥倫布第一次起航的很多年前,東方的商人和探險家們就從東向西航行了。【詞匯精講】set sail起航;開航A thousand boats set sail on a long stretch of the river.百里江面,千帆競發(fā)。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)【詞匯拓展】 We set sail for France at high tide.我們在漲潮時起航去法國。The white sails billow with the breezes they catch.一張張白帆隨著微風(fēng)舞動。I shall get myself a little boat an

17、d sail it around the world.我要給自己買一條小船,駕著它環(huán)游世界。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí) 重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)2.A trading route across the sea was also extended along the coasts of the Indian Ocean,centred around Ceylon (now Sri Lanka).(P26)一條橫跨海洋的貿(mào)易路線也沿著印度洋海岸延伸,以錫蘭(現(xiàn)在的斯里蘭卡)為中心。【詞匯精講】extend vt.擴(kuò)展;使伸長;延長We are making plans to extend the p

18、arking area.我們在制定擴(kuò)大停車場的計(jì)劃。Our company plans to extend its operations into Africa.公司打算將業(yè)務(wù)擴(kuò)展到非洲。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)【詞匯拓展】He has applied for an extension to his visa.他已申請延長簽證。Wed like to extend a warm welcome to our foreign friends.我們熱烈歡迎外國朋友。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí) 重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)3.Here,merchants from China and many other

19、 places met to negotiate trade deals,which also led to more awareness of each others cultures.(P26)在這里,來自中國和許多其他地方的商人聚集在一起協(xié)商貿(mào)易協(xié)定,這也使人們更加了解彼此的文化?！驹~匯精講】negotiate vt.商定;達(dá)成(協(xié)議)vi.談判;磋商;協(xié)商We have been negotiating for more pay.我們一直在協(xié)商加薪。There were reports that three companies were negotiating to market th

20、is kind of drug.據(jù)報道,有三家公司在洽談這種藥的市場推廣。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)【詞匯拓展】They are happy to negotiate with us in this way.他們很高興和我們用這種方式來協(xié)商。The rent is a matter for negotiation between the landlord and the tenant.租金可以由房東和租戶協(xié)商確定。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí) 重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)4.These fleets were a sight to behold and were in a league of their

21、 own at that time.(P26)這些船隊(duì)在當(dāng)時蔚為壯觀,獨(dú)領(lǐng)風(fēng)騷?！驹~匯精講】league n.等級;水平;聯(lián)合會;聯(lián)賽When it comes to cooking,Im not in her league.提到烹飪,我的水平遠(yuǎn)比不上她。Thus the first workers league came into being.第一個工人聯(lián)盟就這樣產(chǎn)生了。Britain has dropped from second to third place in the league.英國在聯(lián)賽中的排名從第二位降到了第三位。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)【詞匯拓展】As a singer,h

22、e is in a league of his own.作為歌唱家,他獨(dú)領(lǐng)風(fēng)騷。A house like that is out of our league.那樣的房子不是我們能買得起的。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí) 重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)5.Although China withdrew from further expeditions after 1433,these land and sea routes remained active channels between other cultures for centuries.(P26)盡管中國在1433年以后退出了進(jìn)一步的探險活動,但這

23、些海陸航線幾個世紀(jì)以來在其他文化之間一直保持活躍?！驹~匯精講】withdraw vi. & vt.(使)撤回;撤離The teacher reached into his pocket and withdrew a sheet of notepaper.老師把手伸進(jìn)口袋,掏出一張便簽。He and the others withdrew to their rented rooms.他和其他人回到了他們租住的房間。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)【詞匯拓展】I need to make a withdrawal from my checking account.我要從我的支票賬戶里提款。My fathe

24、r decided to withdraw some money from the bank.我爸爸決定從銀行取些錢。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)6.The aim of this initiative is to encourage cooperation and trade across the historic Silk Road areas,and strengthen the bonds between China and the rest of the world.(P27)這一倡議的目的是鼓勵在歷史悠久的絲綢之路地區(qū)開展合作和貿(mào)易,加強(qiáng)

25、中國與世界其他地區(qū)的聯(lián)系?！驹~匯精講】bond n.紐帶;關(guān)系vt.& vi.增強(qiáng)信任關(guān)系;使牢固結(jié)合A bond of friendship had been formed between them.他們之間形成了一條友誼的紐帶。The agreement strengthened the bonds between the two countries.協(xié)議加強(qiáng)了兩國間的聯(lián)系。What had bonded them instantly and so completely was their similar background. 是相似的生活背景使他們很快變得親密無間。重點(diǎn)詞匯重點(diǎn)句式隨堂

26、練習(xí)【詞匯拓展】They have always had a special bond with their neighbours.他們一直以來都和鄰居有一種特殊的情誼。Its actually the best time of the year to bond with communities.實(shí)際上,這是一年中和團(tuán)隊(duì)建立聯(lián)系的最佳時機(jī)。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí) 重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)7.Hundreds of years on,and with the latest technology in hand,the need to trade and the desire to enhanc

27、e relationships will drive China to reach out across the sea far into the future.(P27)數(shù)百年過去了,隨著最新技術(shù)的使用,貿(mào)易需求和加強(qiáng)關(guān)系的愿望將驅(qū)使中國在遙遠(yuǎn)的未來跨越海洋。【詞匯精講】in hand在手頭;可供使用The business in hand was approaching some kind of climax.手頭的生意似乎快到緊要關(guān)頭了。The Olympic organisers say that matters are well in hand.奧運(yùn)會的組織方說各項(xiàng)事務(wù)都在掌控之中。

28、重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)【詞匯拓展】Industrial progress should go hand in hand with the development of agriculture.工業(yè)的進(jìn)步應(yīng)與農(nóng)業(yè)的發(fā)展齊頭并進(jìn)。When they met with difficulties,their neighbours gave them a hand.當(dāng)他們遇到困難時,鄰居們伸出了援手。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)Over the centuries,further trading allowed more exploration of the

29、 regions to the west of China,as recorded in Du Huans Record of My Travels in the eighth century.(P26)幾個世紀(jì)以來,貿(mào)易的進(jìn)一步發(fā)展使得中國西部地區(qū)得到了更多的開發(fā),這一點(diǎn)在8世紀(jì)杜環(huán)的經(jīng)行記中有所記載?！揪涫狡饰觥勘揪涫且粋€復(fù)合句。主句是further trading allowed.。as recorded in.是非限制性定語從句的省略形式,句子補(bǔ)全為:as it was recorded in.。As you can imagine,we all enjoyed the party.你

30、可以想象到,我們在那次聚會上都玩得很開心。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)【句式拓展】(1)as用于引導(dǎo)限制性定語從句時,主要與such、as、the same連用,其意為“像的”“凡是的”“一類的人(物)”。He is not such a man as would leave his work half done.他并不是一個做事半途而廢的人。You must show her the same respect as you show me.你必須對她表現(xiàn)出與對我同樣的敬重。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)(2)as用于引導(dǎo)非限制性定語從句時,根據(jù)情況可位于主句之前或之后,有時也可插在主句中間,其意為“這

31、件事”“這一點(diǎn)”。The moon travels round the earth once every month,as is known to everybody.眾所周知,月球每月繞地球轉(zhuǎn)一周。As is often the case,a smart building is the crystallization of collective wisdom and skills.通常情況就是這樣,一座完美的建筑是集體智慧和技巧的結(jié)晶。重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)(3)as引導(dǎo)非限制性定語從句常見的有:as we all know 眾所周知as I can remember正如我所記得的as o

32、ften happens正如經(jīng)常發(fā)生的那樣as we expect正如我們預(yù)料的那樣as was expected 正如預(yù)料的那樣as can be seen 看得出來as may be imagined正如可以想象的那樣as has been said above如上所述as we all can see正如我們都能看到的那樣as is often the case像常規(guī)那樣重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí).課文語法填空It is well-known that mankinds greatest achievements have often res

33、ulted from trade and 1.(curious) and people of early civilisations had a strong desire 2.(complete) the great map of the world.curiosityto complete重點(diǎn)詞匯重點(diǎn)句式隨堂練習(xí)In ancient times,Chinese merchants shipped silk to India,the Middle East,and Rome,along 3. became known as the Silk Road.Trade between merchants from China and other places resulted in better 4. (understand) of each others cultures.In the Ming Dynasty,seven large fleets 5.(lead) by Zheng He set sail from the South