外研版（2019）选择性必修第四册 Unit5 Into the unknown Understanding ideas 精品课件(共23张PPT)
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| 名称 | 外研版（2019）选择性必修第四册 Unit5 Into the unknown Understanding ideas 精品课件(共23张PPT) |  | |
| 格式 | pptx | ||
| 文件大小 | 4.1MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2023-03-07 12:32:52 | ||
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(共23张PPT)
Unit 5 Into the Unknown
Understanding ideas
Into the unknown
理解探索未知话题
理解和思考探究探索未知话题
表达:探索未知话题
starting out
第1课时
Using lanaguage
第3课时
Listening: The mystery of human brain第4课时
Understanding ideas
The Mysteries of the Maya第2课时
Developing ideas
Diving 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 Objectives
By 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 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 ancient 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 Maya
Understanding ideas
Maya civilisation
location
Extending south from parts of what we now know as Mexico into Central 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 Maya‘s understanding 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 characters, 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 system
Fast-reading
*What’s the main idea of the passage
A.William Gadoury’s new discovery 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 surrounded 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. Research 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 in their downfall.
Task
1
Check your answers:
c
a
b
f
d
e
Reading for the structure
Read 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.4－5 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. Mexico
2. Central America
3. natural disasters
4. turning wetlands into fields
5. digging huge canal systems
6. population
7. droughts
8. lasting for a couple of years
Task
2
1.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.
F
T
T
F
T
True or False
Task
3
Complete 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________ , 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. Facts 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
disappeared
Task
4
What is the author’s purpose in starting the passage with the story about William Gadoury
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 people’s imaginations.
Think & Share
Task
5
Can we predict our future
Language points
1.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位置。
language points：
(1)buried deep in the jungle 过去分词短语作后置定语。
bury...in...把...埋到...里 be buried in 专心致志于...
(2)spot v.认出；弄脏 n.地点；斑点 on the spot 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、金属工具甚至畜力的情况下，玛雅人是如何建造他们的。
思考：what和 how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。how引导表语从句，在从句中作方式状语。
Some told tales of____they had helped them survive during bad weather.(限训6)
how
3.Meanwhile, the rise and fall of this civilization must also leave us thinking ahout our own 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 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。
leave 的复合结构：leave+宾语+宾补(doing/done/to do/n./adj./adv./介词短语)
(1)leave sb/sth doing sth使某人/某物保持...状态
Don’t leave her________(wait) outside in the rain.
(2)leave sb/sth done 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...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 the light on/ leave the key at my office
waiting
unfinished
to do
4.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的能力。
思考:that引导什么从句？常见的后面接to do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, freedom, chance, choice, opportunity, strength, way, desire 等；此外序数词后也常用to do做定语。
6.On top of 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。
on top of 除...之外
他除了薪金之外还拿奖金。
He gets bonus on top of 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 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。(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。
John rushed out in a hurry, leaving the door unlocked.
Homework
Write an essay about Maya civilization, including its brilliant achievements and reasons for the its decline and disappearance. The essay should be about 300 words.
Unit 5 Into the Unknown
Understanding ideas
Into the unknown
理解探索未知话题
理解和思考探究探索未知话题
表达:探索未知话题
starting out
第1课时
Using lanaguage
第3课时
Listening: The mystery of human brain第4课时
Understanding ideas
The Mysteries of the Maya第2课时
Developing ideas
Diving 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 Objectives
By 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 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 ancient 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 Maya
Understanding ideas
Maya civilisation
location
Extending south from parts of what we now know as Mexico into Central 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 Maya‘s understanding 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 characters, 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 system
Fast-reading
*What’s the main idea of the passage
A.William Gadoury’s new discovery 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 surrounded 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. Research 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 in their downfall.
Task
1
Check your answers:
c
a
b
f
d
e
Reading for the structure
Read 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.4－5 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. Mexico
2. Central America
3. natural disasters
4. turning wetlands into fields
5. digging huge canal systems
6. population
7. droughts
8. lasting for a couple of years
Task
2
1.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.
F
T
T
F
T
True or False
Task
3
Complete 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________ , 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. Facts 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
disappeared
Task
4
What is the author’s purpose in starting the passage with the story about William Gadoury
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 people’s imaginations.
Think & Share
Task
5
Can we predict our future
Language points
1.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位置。
language points：
(1)buried deep in the jungle 过去分词短语作后置定语。
bury...in...把...埋到...里 be buried in 专心致志于...
(2)spot v.认出；弄脏 n.地点；斑点 on the spot 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、金属工具甚至畜力的情况下，玛雅人是如何建造他们的。
思考：what和 how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。how引导表语从句，在从句中作方式状语。
Some told tales of____they had helped them survive during bad weather.(限训6)
how
3.Meanwhile, the rise and fall of this civilization must also leave us thinking ahout our own 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 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。
leave 的复合结构：leave+宾语+宾补(doing/done/to do/n./adj./adv./介词短语)
(1)leave sb/sth doing sth使某人/某物保持...状态
Don’t leave her________(wait) outside in the rain.
(2)leave sb/sth done 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...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 the light on/ leave the key at my office
waiting
unfinished
to do
4.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的能力。
思考:that引导什么从句？常见的后面接to do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, freedom, chance, choice, opportunity, strength, way, desire 等；此外序数词后也常用to do做定语。
6.On top of 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。
on top of 除...之外
他除了薪金之外还拿奖金。
He gets bonus on top of 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 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。(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。
John rushed out in a hurry, leaving the door unlocked.
Homework
Write an essay about Maya civilization, including its brilliant achievements and reasons for the its decline and disappearance. The essay should be about 300 words.