Unit 5 Understanding ideas ppt课件-（2019）新外研版高中英语选择性必修第四册.pptx

1、Unit 5 Into the UnknownUnderstanding ideasInto the unknown理解探索未知话题理解探索未知话题理解和思考探究探索理解和思考探究探索未知话题未知话题表达表达: :探索未知话题探索未知话题starting out starting out 第第1 1课时课时Using lanaguage Using lanaguage 第第3 3课时课时Listening: The Listening: The mystery of human mystery of human brainbrain第第4 4课时课时Understanding ideasUnd

2、erstanding ideasThe Mysteries of the The Mysteries of the MayaMaya第第2 2课时课时Developing ideasDeveloping ideasDiving DeepDiving Deep第第5 5课时课时Writing :Writing :The The unexplainedunexplained第第6 6课课时时Presenting ideasPresenting ideas第第7 7课时课时单元大观念单元大观念:理解表达探索未知话题理解表达探索未知话题，培养学生科学求真的精神，培养学生科学求真的精神，引导学生积极探索

3、未知，加深其对人类命运共同体的认识。引导学生积极探索未知，加深其对人类命运共同体的认识。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 of Maya civilization;2. perceive the language characte

4、ristics 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 ancient civilizations suddenly disappeared. 2. What might b

5、e the reasons behind their collapse? The destruction of mankind might be the reasons behind their collapse. Understanding ideasMaya civilisation locationExtending south from parts of what we now know as Mexico into Central America Impressive buildingsrepresentative step pyramids The Mayas understand

6、ing of mathematics and astronomy was also quite amazing. They applied this understanding 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 c

7、haracters, with some signs representing animals , people and objects and others 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 disco

8、very about the Maya civilisation.B.A true writing system that the Maya people 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 su

9、rrounded by mystery since its rediscovery in the 19th century.b. But the greatest 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. Res

10、earch also suggests that those natural disasters may have led to the decline 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 i

11、n their downfall.Task1Check your answers:c abfdeReading for the structureRead 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 th

12、e Maya civilisation.Paras.45 D.What caused the Maya to abandon their cities.Para.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. digg

13、ing huge canal systems6. population7. droughts8. lasting for a couple of yearsTask21.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 wi

14、th disasters.5.By 700 AD , Maya civilisation was at its peak.FTTFTTrue or False 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 und

15、erstanding of 1_and astronomy, which helped them maintain an accurate 2_ , and 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. Fac

16、ts such as these add to the mystery surrounding Maya civilisation, driving people 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 disappearedTask41.What is the authors purpose in starting th

17、e passage with the story about William Gadoury?2.What other things do you think could 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 f

18、uture?Language points1.Based on this, he believed he had spotted an unknown Maya city buried deep in the jungle.据此，他相信自己发现了一座隐藏于丛林深处的未为人所知的玛雅城市的据此，他相信自己发现了一座隐藏于丛林深处的未为人所知的玛雅城市的位置。位置。language points：(1)buried deep in the jungle 过去分词短语作后置定语。过去分词短语作后置定语。bury.in.把把.埋到埋到.里里 be buried in 专心致志于专心致志于.(2)spo

19、t v.认出；弄脏认出；弄脏 n.地点；斑点地点；斑点 on the spot 当场；在现场当场；在现场2.What is most extraordinary about these complex structures is how they were built without the use of wheels, metal tools or even animal power.这些复杂建筑最不同寻常之处在于，在没有使用机轮、金属工具甚至畜力这些复杂建筑最不同寻常之处在于，在没有使用机轮、金属工具甚至畜力的情况下，玛雅人是如何建造他们的。的情况下，玛雅人是如何建造他们的。思考：思考：w

20、hat和和 how分别引导什么从句？分别引导什么从句？what引导主语从句，且在从句中充当主语的成分。引导主语从句，且在从句中充当主语的成分。how引导表语从句，在引导表语从句，在从句中作方式状语。从句中作方式状语。Some told tales of_they had helped them survive during bad weather.(限限训训6)how3.Meanwhile, the rise and fall of this civilization must also leave us thinking ahout our own past, present and fut

21、ure.同时，玛雅文明的崛起与衰落必定也让我们思考自己的过去、现在与将来。同时，玛雅文明的崛起与衰落必定也让我们思考自己的过去、现在与将来。5.Its once-great cities fell into ruin, leaving various mysteries for later people to solve.曾经恢宏的城市沦为废墟，留下各种谜团等待后人解开。曾经恢宏的城市沦为废墟，留下各种谜团等待后人解开。leave 的复合结构：的复合结构：leave+宾语宾语+宾补宾补(doing/done/to do/n./adj./adv./介词短语介词短语)(1)leave sb/sth

22、 doing sth使某人使某人/ /某物保持某物保持.状态状态Dont leave her_(wait) outside in the rain.(2)leave sb/sth done 表示被动或动作已经完成表示被动或动作已经完成He got up slowly, leaving the lunch_(finish).(3)leave sb/sth to do 表示让表示让.去做某事，表将来或目的去做某事，表将来或目的He left me _(do) what he told but I refused his order.(4)leave the window open/ leave t

23、he light on/ leave the key at my officewaitingunfinishedto do4.By changing the landscape in this way, it is possible that the Maya people unknowingly reduced their ability to deal with natural disasters.通过这样改变地貌，玛雅人可能在不知不觉中减弱了自己应对自然灾害通过这样改变地貌，玛雅人可能在不知不觉中减弱了自己应对自然灾害的能力。的能力。思考思考:that引导什么从句？常见的后面接引导什么从

24、句？常见的后面接to do作后置定语的名词？作后置定语的名词？(1)it作形式主语，作形式主语，that引导真正的主语。引导真正的主语。(2)抽象名词常常用不定式做后置定语，如抽象名词常常用不定式做后置定语，如ability, freedom, chance, choice, opportunity, strength, way, desire 等；此外序数词后也常用等；此外序数词后也常用to do做定语。做定语。6.On top of all this was an achievement unique in the Americas at that time: a true writing

25、 system.除此之外，还有项当时在美洲独一无二的成就：一套真正的文字系统。除此之外，还有项当时在美洲独一无二的成就：一套真正的文字系统。完全倒装：将谓语完全置于主语之前的句子。完全倒装：将谓语完全置于主语之前的句子。on top of 除除.之外之外他除了薪金之外还拿奖金。他除了薪金之外还拿奖金。He gets bonus on top of his salary.变式训练：变式训练：1.当她意识到发生了什么的时候，她双手掩面而泣。当她意识到发生了什么的时候，她双手掩面而泣。When she realized what happened, she buried her face in he

26、r hands and cried.2.他们知道无论遇到什么困难，他们都有能力解决它们。他们知道无论遇到什么困难，他们都有能力解决它们。They know that no matter what difficulties come their way, they have the ability to solve them. 3.看到招聘兼职英语翻译的广告，我写信申请这份工作。看到招聘兼职英语翻译的广告，我写信申请这份工作。(写作训练二写作训练二)Having seen the advertisement that a part-time English translator is in need, I am writing to apply for this job.4.约翰匆忙跑了出去，门没锁。约翰匆忙跑了出去，门没锁。John rushed out in a hurry, leaving the door unlocked.HomeworkWrite an essay about Maya civilization, including its brilliant achievements and reasons for the its decline and disappearance. The essay should be about 300 words.