高中英語 選必B4U5-Understanding ideas B7U5-Understanding ideas 課件

1、教學(xué)教材：外研版高中英語新教材選擇性必修4教學(xué)內(nèi)容：Unit 5 Into the Unknown第二課時：Understanding ideas執(zhí)教人：宋麗娜/北京師范大學(xué)南山附屬中學(xué)Into the unknown理解探索未知話題理解和思考探究探索未知話題表達:探索未知話題starting out 第1課時Using lanaguage 第3課時Listening: The mystery of human brain第4課時Understanding ideasThe Mysteries of the Maya第2課時Developing ideasDiving Deep第5課時Writ

2、ing :The unexplained第6課時Presenting ideas第7課時單元大觀念:理解表達探索未知話題，培養(yǎng)學(xué)生科學(xué)求真的精神，引導(dǎo)學(xué)生積極探索未知，加深其對人類命運共同體的認識。Learning ObjectivesBy the end of this period, students will be able to.1. understand the brilliant achievements of Maya civilization, and find out the possible reasons for the decline and disappearance

3、 of Maya civilization;2. perceive the language characteristics of the text, and grasp the structure and context of the text; 3. cultivate truth-seeking spirit and awareness of protecting modern civilization.1. What do you know about these ancient civilizations? They were very popular before the anci

4、ent civilizations suddenly disappeared. 2. What might be the reasons behind their collapse? The destruction of mankind might be the reasons behind their collapse. The Mysteries of The MayaUnderstanding ideasMaya civilisation locationExtending south from parts of what we now know as Mexico into Centr

5、al America Impressive buildings What is most extraordinary about these complex structures is how they were built without the use of wheels, metal tools or even animal power. representative step pyramids The Mayas understanding of mathematics and astronomy was also quite amazing. They applied this un

6、derstanding to the Maya calendar, which was accurate to within 30 seconds per year.Maya calendar On top of all this was an achievement unique in the Americas at that time: a true writing system. It contained more than 800 characters, with some signs representing animals , people and objects and othe

7、rs representing syllables. It was a writing system so complicated that, so far, no one has been able to interpret it completely.Maya writing systemFast-reading*Whats the main idea of the passage?A.William Gadourys new discovery about the Maya civilisation.B.A true writing system that the Maya people

8、 had created.C.Some possible reasons why the Maya civilisation fell down.D.How the Maya civilisation was formed.Choose the topic sentences and write them on the lines to complete the passage.a. Maya civilisation has been surrounded by mystery since its rediscovery in the 19th century.b. But the grea

9、test mystery of all is what caused the Maya to abandon most of their great cities.c. Although his theory has been dismissed by scholars, it shows how powerful the secrets of Ancient Maya civilisation are among people.d. Research also suggests that those natural disasters may have led to the decline

10、of the Maya.e. Meanwhile, the rise and fall of this civilization must also leave us thinking about our own past, present and future.f. Some research seems to indicate that the Maya people themselves may have played a part in their downfall.Task1Check your answers:c abfdeReading for the structureRead

11、 the passage and match the main idea of each paragraph.Para.1 A.Why Maya civilisation collapsed.Para.2 B.A Canadian boy spotted an unknown Maya city buried deep in the jungle.Para.3 C.We should learn from the downfall of the Maya civilisation.Paras.45 D.What caused the Maya to abandon their cities.P

12、ara.6 E.Maya civilisation has been surrounded by mystery.Organise information from the passage and complete the file of Maya civilisation.1. Mexico2. Central America3. natural disasters4. turning wetlands into fields5. digging huge canal systems6. population7. droughts8. lasting for a couple of year

13、sTask21.Canadian William Gadoury spotted an unknown Maya city.2.The secrets of Ancient Maya civilisation are powerful among people.3.The writing system of the Maya was hard to understand.4.The Maya were expert at dealing with disasters.5.By 700 AD , Maya civilisation was at its peak.FTTFTTrue or Fal

14、se Task3Complete the cultural comparison with information from the passage. Comparing the highly-sophisticated civilisations of Maya and Ancient China reveals some surprising similarities. They both possessed a detailed understanding of 1_and astronomy, which helped them maintain an accurate 2_ , an

15、d a complex 3_ that used signs to represent sounds and meanings. It can therefore be difficult to explain why, despite their excellent construction skills, the Maya never learnt to use 4_, while the ancient Chinese did. Facts such as these add to the mystery surrounding Maya civilisation, driving pe

16、ople to find out why it 5_ while others, such as Ancient China, survived and thrived. mathematics calendar writing system wheels, metal tools or even animal power disappearedTask4What is the authors purpose in starting the passage with the story about William Gadoury?What other things do you think c

17、ould destroy a civilisation? Share an example with the class. The story about William Gadoury shows how the secrets of Ancient Maya civilisation have captured peoples imaginations.Think & Share Task5Can we predict our future?Language points1.Based on this, he believed he had spotted an unknown Maya

18、city buried deep in the jungle.據(jù)此，他相信自己發(fā)現(xiàn)了一座隱藏于叢林深處的未為人所知的瑪雅城市的位置。language points：(1)buried deep in the jungle 過去分詞短語作后置定語。bury.in.把.埋到.里 be buried in 專心致志于.(2)spot v.認出；弄臟 n.地點；斑點 on the spot 當(dāng)場；在現(xiàn)場2.What is most extraordinary about these complex structures is how they were built without the use of

19、 wheels, metal tools or even animal power.這些復(fù)雜建筑最不同尋常之處在于，在沒有使用機輪、金屬工具甚至畜力的情況下，瑪雅人是如何建造他們的。思考：what和 how分別引導(dǎo)什么從句？what引導(dǎo)主語從句，且在從句中充當(dāng)主語的成分。how引導(dǎo)表語從句，在從句中作方式狀語。Some told tales of_they had helped them survive during bad weather.(限訓(xùn)6)how3.Meanwhile, the rise and fall of this civilization must also leave u

20、s thinking ahout our own past, present and future.同時，瑪雅文明的崛起與衰落必定也讓我們思考自己的過去、現(xiàn)在與將來。5.Its once-great cities fell into ruin, leaving various mysteries for later people to solve.曾經(jīng)恢宏的城市淪為廢墟，留下各種謎團等待后人解開。leave 的復(fù)合結(jié)構(gòu)：leave+賓語+賓補(doing/done/to do/n./adj./adv./介詞短語)(1)leave sb/sth doing sth使某人/某物保持.狀態(tài)Dont

21、leave her_(wait) outside in the rain.(2)leave sb/sth done 表示被動或動作已經(jīng)完成He got up slowly, leaving the lunch_(finish).(3)leave sb/sth to do 表示讓.去做某事，表將來或目的He left me _(do) what he told but I refused his order.(4)leave the window open/ leave the light on/ leave the key at my officewaitingunfinishedto do4

22、.By changing the landscape in this way, it is possible that the Maya people unknowingly reduced their ability to deal with natural disasters.通過這樣改變地貌，瑪雅人可能在不知不覺中減弱了自己應(yīng)對自然災(zāi)害的能力。思考:that引導(dǎo)什么從句？常見的后面接to do作后置定語的名詞？(1)it作形式主語，that引導(dǎo)真正的主語。(2)抽象名詞常常用不定式做后置定語，如ability, freedom, chance, choice, opportunity, strength, way, desire 等；此外序數(shù)詞后也常用to do做定語。6.On top of all this was an achievement unique in the Americas at that time: a