高中英语外研版 (2019)选择性必修 第四册Unit 5 Into the unknown多媒体教学ppt课件

这是一份高中英语外研版 (2019)选择性必修 第四册Unit 5 Into the unknown多媒体教学ppt课件，共23页。
Int the unknwn
理解和思考探究探索未知话题
starting ut 第1课时
Using lanaguage 第3课时
Listening: The mystery f human brain第4课时
Understanding ideasThe Mysteries f the Maya第2课时
Develping ideasDiving Deep第5课时
Writing :The unexplained第6课时
Presenting ideas第7课时
单元大观念:理解表达探索未知话题，培养学生科学求真的精神，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 f this perid, students will be able understand the brilliant achievements f Maya civilizatin, and find ut the pssible reasns fr the decline and disappearance f Maya civilizatin;2. perceive the language characteristics f the text, and grasp the structure and cntext f the text; 3. cultivate truth-seeking spirit and awareness f prtecting mdern civilizatin.
1. What d yu knw abut these ancient civilizatins?
They were very ppular befre the ancient civilizatins suddenly disappeared.
2. What might be the reasns behind their cllapse?
The destructin f mankind might be the reasns behind their cllapse.
The Mysteries f The Maya
Understanding ideas
Maya civilisatin
Extending suth frm parts f what we nw knw as Mexic int Central America
Impressive buildings
What is mst extrardinary abut these cmplex structures is hw they were built withut the use f wheels, metal tls r even animal pwer.
representative step pyramids
The Maya‘s understanding f mathematics and astrnmy was als quite amazing. They applied this understanding t the Maya calendar, which was accurate t within 30 secnds per year.
Maya calendar
On tp f all this was an achievement unique in the Americas at that time: a true writing system. It cntained mre than 800 characters, with sme signs representing animals , peple and bjects and thers representing syllables. It was a writing system s cmplicated that, s far, n ne has been able t interpret it cmpletely.
Maya writing system
Fast-reading
*What’s the main idea f the passage?A.William Gadury’s new discvery abut the Maya civilisatin.B.A true writing system that the Maya peple had pssible reasns why the Maya civilisatin fell the Maya civilisatin was frmed.
Chse the tpic sentences and write them n the lines t cmplete the passage.
a. Maya civilisatin has been surrunded by mystery since its rediscvery in the 19th century.b. But the greatest mystery f all is what caused the Maya t abandn mst f their great cities.c. Althugh his thery has been dismissed by schlars, it shws hw pwerful the secrets f Ancient Maya civilisatin are amng peple.d. Research als suggests that thse natural disasters may have led t the decline f the Maya.e. Meanwhile, the rise and fall f this civilizatin must als leave us thinking abut ur wn past, present and future.f. Sme research seems t indicate that the Maya peple themselves may have played a part in their dwnfall.
Check yur answers:
Reading fr the structure
Read the passage and match the main idea f each paragraph.Para.1　　　 A.Why Maya civilisatin cllapsed.Para.2 B.A Canadian by sptted an unknwn Maya city buried deep in the jungle.Para.3 C.We shuld learn frm the dwnfall f the Maya civilisatin.Paras.4－5 D.What caused the Maya t abandn their cities.Para.6 E.Maya civilisatin has been surrunded by mystery.
Organise infrmatin frm the passage and cmplete the file f Maya civilisatin.
1. Mexic2. Central America3. natural disasters4. turning wetlands int fields5. digging huge canal systems6. ppulatin7. drughts8. lasting fr a cuple f years
1.Canadian William Gadury sptted an unknwn Maya secrets f Ancient Maya civilisatin are pwerful amng writing system f the Maya was hard t Maya were expert at dealing with 700 AD , Maya civilisatin was at its peak.
True r False
Cmplete the cultural cmparisn with infrmatin frm the passage.
Cmparing the highly-sphisticated civilisatins f Maya and Ancient China reveals sme surprising similarities. They bth pssessed a detailed understanding f 1____________and astrnmy, which helped them maintain an accurate 2________ , and a cmplex 3______________ that used signs t represent sunds and meanings. It can therefre be difficult t explain why, despite their excellent cnstructin skills, the Maya never learnt t use 4______________________________, while the ancient Chinese did. Facts such as these add t the mystery surrunding Maya civilisatin, driving peple t find ut why it 5____________ while thers, such as Ancient China, survived and thrived.
mathematics
writing system
wheels, metal tls r even animal pwer
disappeared
What is the authr’s purpse in starting the passage with the stry abut William Gadury?What ther things d yu think culd destry a civilisatin? Share an example with the class.
The stry abut William Gadury shws hw the secrets f Ancient Maya civilisatin have captured peple’s imaginatins.
Think & Share
Can we predict ur future?
Language pints
1.Based n this, he believed he had sptted an unknwn 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位置。language pints：(1)buried deep in the jungle 过去分词短语作后置定语。把...埋到...里 be buried in 专心致志于...(2)spt v.认出；弄脏 n.地点；斑点 n the spt 当场；在现场2.What is mst extrardinary abut these cmplex structures is hw they were built withut the use f wheels, metal tls r even animal pwer.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。思考：what和 hw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。hw引导表语从句，在从句中作方式状语。Sme tld tales f____they had helped them survive during bad weather.(限训6)
3.Meanwhile, the rise and fall f this civilizatin must als leave us thinking ahut ur wn past, present and future.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 nce-great cities fell int ruin, leaving varius mysteries fr later peple t slve.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：leave+宾语+宾补(ding/dne/t d/n./adj./adv./介词短语)(1)leave sb/sth ding sth使某人/某物保持...状态Dn’t leave her________(wait) utside in the rain.(2)leave sb/sth dne 表示被动或动作已经完成He gt up slwly, leaving the lunch_________(finish).(3)leave sb/sth t d 表示让...去做某事，表将来或目的He left me ______(d) what he tld but I refused his rder.(4)leave the windw pen/ leave the light n/ leave the key at my ffice
4.By changing the landscape in this way, it is pssible that the Maya peple unknwingly reduced their ability t 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的能力。思考:that引导什么从句？常见的后面接t d作后置定语的名词？(1)it作形式主语，that引导真正的主语。(2)抽象名词常常用不定式做后置定语，如ability, freedm, chance, chice, pprtunity, strength, way, desire 等；此外序数词后也常用t d做定语。6.On tp f all this was an achievement unique in the Americas at that time: a true writing 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。完全倒装：将谓语完全置于主语之前的句子。n tp f 除...之外他除了薪金之外还拿奖金。He gets bnus n tp f his salary.
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。When she realized what happened, she buried her face in her 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。They knw that n matter what difficulties cme their way, they have the ability t slve them. 3.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)Having seen the advertisement that a part-time English translatr is in need, I am writing t apply fr this jb.4.约翰匆忙跑了出去，门没锁。Jhn rushed ut in a hurry, leaving the dr unlcked.