(共29张PPT)
UNIT 1 Nature in the balance
Section Ⅰ Welcome to the unit & Reading
1.通过阅读课文内容，了解亚马孙热带雨林的现状及其对世界环境起到的重要作用;了解有关亚马孙热带雨林的基本信息，理解环境保护的迫切性和重要性。（思维品质，文化意识）
2.通过分析课文结构，了解文章大意，培养略读和查读等阅读能力。（语言能力，学习能力）
3.通过分析课文细节，培养分析长难句的能力;根据单元内容调整学习策略。（学习能力）
Ⅰ.释义匹配
A.n.昆虫
B.n.地区;区域;行政区
C.prep.在……下面;在……下方;配不上
D.n.营养素;营养物
E.n.土壤;国土;领土;土地
F.n.种;物种
G.n.野生动植物;野生生物
H.n.大陆;陆地;洲
I.num.一百万;许多;大量
J.n.灭绝;绝种
1.soil( )
E
2.continent( )
H
3.million( )
I
4.species( )
F
5.nutrient( )
D
6.wildlife( )
G
7.beneath( )
C
8.extinction( )
J
9.insect( )
A
10.region( )
B
Ⅱ.默写单词
1.______ n.& vt.伤害;损害
harm
2._______ n.长;长度;时间的长短;篇幅;（电影）片长
length
3._______ n.不同种类;变化;多样性;变种;变体
variety
4.________ vi.生存;存活 vt.幸存;幸免于难
survive
5._____ adv.因此;从而;这样
thus
6._________ vi.不复存在;灭绝;消亡;消失;失踪
disappear
7.__________ n.农业;农学
agriculture
8._______ n.影响;作用;撞击;冲撞 vi.&vt.有影响;冲击
impact
1._______相应地;转而
in turn
2.____________使分解（为）;使变化（成）
break down
3._______由于;因为
due to
4._________逐渐增加;扩大
build up
5.______________想出;想到
come up with
6.breathe life into________________________
给……带来起色;注入活力
7.call for__________________
（公开）要求;需要
8.spring to mind____________________
突然记起（或想到）
9.get rid of_______________
摆脱;丢弃;扔掉
10.give rise to __________________
使发生（或存在）
Step 1 先导入，拓展背景知识
Ⅰ.Are there any places in China with rich biodiversity like the Amazon rainforest Introduce one to the class.
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
The Three Parallel Rivers of Yunnan Protected Areas （云南三江并流保护区） is a
natural property consisting of 15 protected areas. The property is of outstanding value
for its diversity of landscapes and rich biodiversity. In its 15 different protected areas,
there are over 6,000 plant species, around 200 mammal species and more than 400
bird species. A large number of rare animals such as Yunnan golden monkeys, snow
leopards and black-necked cranes can be found here.
Ⅱ.Read the passage on Pages 2-3 and answer the following questions.
1.What is the largest rainforest in the world
______________________
The Amazon rainforest.
2.Where is it
______________________________
On the South America continent.
3.How many countries does it cross
_______
Eight.
Step 2 再精读，明确概要细节
Ⅰ.Read the passage on Pages 2-3 quickly and match each paragraph with its proper main idea.
A.Plants in the Amazon rainforest.
B.The Amazon rainforest's importance and the major danger to it.
C.The Amazon rainforest maintains the fine balance of the Earth's ecosystem.
D.An overview of the Amazon rainforest.
E.Animals in the Amazon rainforest.
1.Para.1( )
C
2.Para.2( )
D
3.Para.3( )
A
4.Para.4( )
E
5.Para.5( )
B
Ⅱ.Read the passage on Pages 2-3 again and choose the best answers.
1.What's the main idea of the passage ( )
C
A.The Amazon rainforest is the largest rainforest in the world.
B.The Amazon rainforest gives the richest biodiversity on the Earth.
C.The Amazon rainforest is a natural treasure house on the Earth.
D.The Amazon rainforest is known as the “lungs of the planet”.
2.Which of the following statements about the Amazon rainforest is TRUE according
to the passage ( )
D
A.The Amazon rainforest plays an important part in keeping the balance of human and nature.
B.The Amazon rainforest crosses into seven countries,including Brazil and Peru.
C.The area of the Amazon rainforest is around 8 million square kilometres,more than half the size of China.
D.The Amazon rainforest is named after the Amazon River,which is close to 6,400 kilometres in length.
3.What can be inferred from Paragraph 3 in the passage ( )
B
A.There are only 390,000 species of plants on the Earth.
B.Different species of plants in the Amazon rainforest grow in different levels.
C.At the bottom of the Amazon rainforest grow some bushes.
D.The ancient brazil nut trees and the water lilies are living in the same level.
4.The author uses the example of jaguars in Paragraph 4 ___.
B
A.to prove that some rare animals are still found in the rainforest
B.to show that they are only one element of this rainforest's food chain
C.to explain the importance of protecting the forest
D.to warn readers to protect the animals from being damaged in the rainforest
5.What's the style of the passage ( )
D
A.Advertisement. B.Travel journal.
C.Experiment report. D.Documentary script.
Step 3 后结构，分析语篇逻辑
Ⅰ.Fill in the blanks with proper words according to the passage on Pages 2-3.
Main ideas Details
An overview of the Amazon rainforest ※The Amazon rainforest,the largest rainforest in the world, plays
a significant role in 1.___________ the fine balance of the
Earth's ecosystem.
※The Amazon rainforest crosses into 2.______countries on the
South American continent.
maintaining
eight
Step 3 后结构，分析语篇逻辑
Ⅰ.Fill in the blanks with proper words according to the passage on Pages 2-3.
Main ideas Details
An overview of the Amazon rainforest ※With an area of around 6 million square kilometres,the Amazon
rainforest is more than 3._____ the size of China.
※The Amazon River is close to 6,400 kilometres in 4._______,which supports many different ecosystems,giving this
area the richest biodiversity on the Earth.
half
length
Main ideas Details
5._______ in the Amazon rainforest Of the 390,000 plant species known to us,more than 40,000 can
be found in the Amazon. The forest's different levels support an
6.____________ variety of wildlife. Each level of the forest forms
its own little world,home to different kinds of living things.
7.________ in the Amazon rainforest More than 1,300 species of birds and over 400 species of
mammals hide among the jungle's plant life. While a
8.__________number of jaguars survive here,they are only one
element of this forest's food chain.
Plants
unbelievable
Animals
significant
续表
Main ideas Details
The importance of the Amazon rainforest and the major danger it faces ※The Amazon rainforest breathes life into the planet
by9.______carbon and producing over 20 per cent of all the
Earth's oxygen,thus known as the “lungs of the planet”.
※Moreover,the Amazon rainforest is a treasure house of species
that can be used for food or medicine.
※One major danger to the Amazon rainforest:us. Over the past
50 years,about 17 per cent of the rainforest has disappeared due
to 10._______________such as agriculture and cattle farming.
fixing
human activities
续表
Ⅱ.Summarize the passage on Pages 2-3 in about 70 words.
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
参考范文
As the largest rainforest in the world, the Amazon rainforest has the richest
biodiversity on the Earth. （要点1） There are two reasons. Firstly, the plants
provide shelters forming 5 ecosystems: roots, leaf litter, shorter plants, hardwoods and
treetops.（要点2） Secondly, the animals help to maintain the balance of different
ecosystems.（要点3） But now the rainforest is facing a serious problem that human
activities are damaging its biodiversity. （要点4） Can we afford to damage the
“lungs of the planet” （要点5）
Ⅲ.长难句分析
As the impact of human activities continues to grow and the list of species in danger
of extinction becomes longer，we are left with a question：can we afford to damage
the “lungs of the planet”？
善分析 此句为主从复合句。其中 as 引导（1）__________从句，表示“当……时；随
着……”，can we afford to damage the “lungs of the planet”是名词（2）________的
同位语。
会翻译（3）________________________________________________________________
__________________________________________
时间状语
question
随着人类活动的影响不断增加,濒危物种的名单越来越长,这留给我们一个问题:我们能承担得起破坏“地球之肺”的后果吗
Ⅰ.品句填空
1.These revelations will h_____her chances of winning the election.
arm
2.We have the most fertile s____ in the Midwest.
oil
3.She loved the African c________.
ontinent
4.Her father left her a m______ dollars when he died.
illion
5.The river is 300 miles in l______.
ength
6.The e_________ will be thrown out of whack.
cosystem
7.Snow leopards are on the list of endangered s_______.
pecies
8.Australians are justly proud of their native w______.
ildlife
Ⅱ.选词填空
do harm to; work together; be thankful for; cut down; sound the alarm
1.If we all _____________, I think we could accomplish our goal.
work together
2.I will _______________the 22 years I had with him.
be thankful for
3.The doctor told him to __________on his drinking.
cut down
4.Unprincipled accommodation will ___________him.
do harm to
5.When I saw the smoke, I tried to _______________.
sound the alarm
Ⅲ.课文语法填空
Welcome to the Amazon rainforest，the 1._______（large） rainforest in the
world. It plays a significant role in 2.____________（maintain） the fine balance of
the Earth's ecosystem. The Amazon rainforest crosses into eight countries 3._____ an
area of around 6 million square kilometres，more than half 4.____ size of China. It
is named after the Amazon River， 5._______ is close to 6，400 kilometres in
length.
Of the 390，000 plant species 6._______（know） to us， more than 40，000
can be found in the Amazon rainforest. The forest's different levels support an
unbelievable 7._______（vary） of wildlife. And more than 1，300 species of
8.______（bird） and over 400 species of mammals hide among the forest.
largest
.maintaining
with
the
which
known
variety
birds
The Amazon rainforest 9.___________ （regard） as the “lungs of the planet”
by fixing carbon and producing over 20 per cent of all the Earth's oxygen. Moreover，
the Amazon rainforest 10.___（be） a treasure house of species that can be used for
food or medicine.
is regarded
is
Ⅳ.概要写作微技能——寻找信息支持句
根据主旨句,在第5段中找出其信息支持句。
Para.3 Each level of the forest forms its own little world,home to different kinds of living things.
At the bottom, there is a system of roots beneath the ground. Above that is the mass of leaf litter on the dark forest floor. The next level is made up of shorter plants with large leaves. Then there are the towering ancient hardwoods,and finally the tops of the tallest trees many metres above the ground.
Para.5 The Amazon rainforest's importance and the major danger to it.
___
The Amazon rainforest breathes life into the planet by fixing carbon and producing over 20 per cent of all the Earth's oxygen.
Moreover,the Amazon rainforest is a treasure house of species that can be used for food or medicine.
Over the past 50 years,about 17 per cent of the rainforest has disappeared due to human activities such as agriculture and cattle farming.
Ⅴ.创新活动（选做题）
Now discuss the following questions in pairs. After your discussion, try to report it to your class.
1.If this passage is to be expanded, what information do you think could be included
in the next paragraph
___________________________________________________________________________
__________
Specific descriptions of damage activities, solutions to protect the Amazon rainforest and so on.
2.If people continue to damage the “lungs of the planet”, what will be the result
____
略Unit 1 Section Ⅰ Welcome to the unit & Reading
【学习目标】
1.通过阅读课文内容,了解亚马孙热带雨林的现状及其对世界环境起到的重要作用;了解有关亚马孙热带雨林的基本信息,理解环境保护的迫切性和重要性。(思维品质,文化意识)
2.通过分析课文结构,了解文章大意,培养略读和查读等阅读能力。(语言能力,学习能力)
3.通过分析课文细节,培养分析长难句的能力;根据单元内容调整学习策略。(学习能力)
【自主预习】
Step 1 单词认读
Ⅰ.释义匹配
( )1.soil ( )2.continent
( )3.million ( )4.species
( )5.nutrient ( )6.wildlife
( )7.beneath ( )8.extinction
( )9.insect ( )10.region
A.n.昆虫
B.n.地区;区域;行政区
C.prep.在……下面;在……下方;配不上
D.n.营养素;营养物
E.n.土壤;国土;领土;土地
F.n.种;物种
G.n.野生动植物;野生生物
H.n.大陆;陆地;洲
I.num.一百万;许多;大量
J.n.灭绝;绝种
答案 1~5 EHIFD 6~10 GCJAB
Ⅱ.默写单词
1. n.& vt.伤害;损害
2. n.长;长度;时间的长短;篇幅;(电影)片长
3. n.不同种类;变化;多样性;变种;变体
4. vi.生存;存活 vt.幸存;幸免于难
5. adv.因此;从而;这样
6. vi.不复存在;灭绝;消亡;消失;失踪
7. n.农业;农学
8. n.影响;作用;撞击;冲撞 vi.&vt.有影响;冲击
答案 1.harm 2.length 3.variety 4.survive
5.thus 6.disappear 7.agriculture 8.impact
Step 2 短语记诵
1. 相应地;转而
2. 使分解(为);使变化(成)
3. 由于;因为
4. 逐渐增加;扩大
5. 想出;想到
6.breathe life into
7.call for
8.spring to mind
9.get rid of
10.give rise to
答案 1.in turn 2.break down 3.due to
4.build up 5.come up with 6.给……带来起色;注入活力 7.(公开)要求;需要 8.突然记起(或想到)
9.摆脱;丢弃;扔掉 10.使发生(或存在)
【合作探究】
语篇研读
Step 1 先导入,拓展背景知识
Ⅰ.Are there any places in China with rich biodiversity like the Amazon rainforest Introduce one to the class.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
答案 The Three Parallel Rivers of Yunnan Protected Areas (云南三江并流保护区) is a natural property consisting of 15 protected areas.The property is of outstanding value for its diversity of landscapes and rich biodiversity.In its 15 different protected areas, there are over 6,000 plant species, around 200 mammal species and more than 400 bird species.A large number of rare animals such as Yunnan golden monkeys, snow leopards and black-necked cranes can be found here.
Ⅱ.Read the passage on Pages 2-3 and answer the following questions.
1.What is the largest rainforest in the world
_______________________________________________________________________________
2.Where is it
_______________________________________________________________________________
3.How many countries does it cross
_______________________________________________________________________________
答案 1.The Amazon rainforest. 2.On the South America continent. 3.Eight.
Step 2 再精读,明确概要细节
Ⅰ.Read the passage on Pages 2-3 quickly and match each paragraph with its proper main idea.
( )1.Para.1 ( )2.Para.2
( )3.Para.3 ( )4.Para.4
( )5.Para.5
A.Plants in the Amazon rainforest.
B.The Amazon rainforest’s importance and the major danger to it.
C.The Amazon rainforest maintains the fine balance of the Earth’s ecosystem.
D.An overview of the Amazon rainforest.
E.Animals in the Amazon rainforest.
答案 1~5 CDAEB
Ⅱ.Read the passage on Pages 2-3 again and choose the best answers.
1.What’s the main idea of the passage
A.The Amazon rainforest is the largest rainforest in the world.
B.The Amazon rainforest gives the richest biodiversity on the Earth.
C.The Amazon rainforest is a natural treasure house on the Earth.
D.The Amazon rainforest is known as the “lungs of the planet”.
2.Which of the following statements about the Amazon rainforest is TRUE according to the passage
A.The Amazon rainforest plays an important part in keeping the balance of human and nature.
B.The Amazon rainforest crosses into seven countries,including Brazil and Peru.
C.The area of the Amazon rainforest is around 8 million square kilometres,more than half the size of China.
D.The Amazon rainforest is named after the Amazon River,which is close to 6,400 kilometres in length.
3.What can be inferred from Paragraph 3 in the passage
A.There are only 390,000 species of plants on the Earth.
B.Different species of plants in the Amazon rainforest grow in different levels.
C.At the bottom of the Amazon rainforest grow some bushes.
D.The ancient brazil nut trees and the water lilies are living in the same level.
4.The author uses the example of jaguars in Paragraph 4 .
A.to prove that some rare animals are still found in the rainforest
B.to show that they are only one element of this rainforest’s food chain
C.to explain the importance of protecting the forest
D.to warn readers to protect the animals from being damaged in the rainforest
5.What’s the style of the passage
A.Advertisement.
B.Travel journal.
C.Experiment report.
D.Documentary script.
答案 1~5 CDBBD
Step 3 后结构,分析语篇逻辑
Ⅰ.Fill in the blanks with proper words according to the passage on Pages 2-3.
Main ideas Details
An overview of the Amazon rainforest ※The Amazon rainforest,the largest rainforest in the world, plays a significant role in 1. the fine balance of the Earth’s ecosystem. ※The Amazon rainforest crosses into 2. countries on the South American continent. ※With an area of around 6 million square kilometres,the Amazon rainforest is more than 3. the size of China. ※The Amazon River is close to 6,400 kilometres in 4. ,which supports many different ecosystems,giving this area the richest biodiversity on the Earth.
Main ideas Details
5. in the Amazon rainforest Of the 390,000 plant species known to us,more than 40,000 can be found in the Amazon.The forest’s different levels support an 6. variety of wildlife.Each level of the forest forms its own little world,home to different kinds of living things.
7. in the Amazon rainforest More than 1,300 species of birds and over 400 species of mammals hide among the jungle’s plant life.While a 8. number of jaguars survive here,they are only one element of this forest’s food chain.
The importance of the Amazon rainforest and the major danger it faces ※The Amazon rainforest breathes life into the planet by 9. carbon and producing over 20 per cent of all the Earth’s oxygen,thus known as the “lungs of the planet”. ※Moreover,the Amazon rainforest is a treasure house of species that can be used for food or medicine. ※One major danger to the Amazon rainforest:us.Over the past 50 years,about 17 per cent of the rainforest has disappeared due to 10. such as agriculture and cattle farming.
答案 1.maintaining 2.eight 3.half 4.length 5.Plants 6.unbelievable 7.Animals 8.significant
9.fixing 10.human activities
Ⅱ.Summarize the passage on Pages 2-3 in about 70 words.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
参考范文
As the largest rainforest in the world, the Amazon rainforest has the richest biodiversity on the Earth. (要点1) There are two reasons. Firstly, the plants provide shelters forming 5 ecosystems: roots, leaf litter, shorter plants, hardwoods and treetops.(要点2) Secondly, the animals help to maintain the balance of different ecosystems.(要点3) But now the rainforest is facing a serious problem that human activities are damaging its biodiversity. (要点4) Can we afford to damage the “lungs of the planet” (要点5)
Ⅲ.长难句分析
As the impact of human activities continues to grow and the list of species in danger of extinction becomes longer,we are left with a question:can we afford to damage the “lungs of the planet”
善分析 此句为主从复合句。其中 as 引导(1) 从句,表示“当……时;随着……”,can we afford to damage the “lungs of the planet”是名词(2) 的同位语。
会翻译 (3)
_______________________________________________________________________________
_______________________________________________________________________________
答案 (1)时间状语 (2)question (3)随着人类活动的影响不断增加,濒危物种的名单越来越长,这留给我们一个问题:我们能承担得起破坏“地球之肺”的后果吗
【随堂检测】
Ⅰ.品句填空
1.These revelations will h her chances of winning the election.
2.We have the most fertile s in the Midwest.
3.She loved the African c .
4.Her father left her a m dollars when he died.
5.The river is 300 miles in l .
6.The e will be thrown out of whack.
7.Snow leopards are on the list of endangered s .
8.Australians are justly proud of their native w .
答案 1.harm 2.soil 3.continent 4.million
5.length 6.ecosystem 7.species 8.wildlife
Ⅱ. 选词填空
do harm to; work together; be thankful for; cut down; sound the alarm
1.If we all , I think we could accomplish our goal.
2.I will the 22 years I had with him.
3.The doctor told him to on his drinking.
4.Unprincipled accommodation will him.
5.When I saw the smoke, I tried to .
答案 1.work together 2.be thankful for 3.cut down 4.do harm to 5.sound the alarm
Ⅲ.课文语法填空
Welcome to the Amazon rainforest,the 1.(large) rainforest in the world.It plays a significant role in 2.(maintain) the fine balance of the Earth’s ecosystem.The Amazon rainforest crosses into eight countries 3. an area of around 6 million square kilometres,more than half 4. size of China.It is named after the Amazon River, 5. is close to 6,400 kilometres in length.
Of the 390,000 plant species 6.(know) to us, more than 40,000 can be found in the Amazon rainforest.The forest’s different levels support an unbelievable 7.(vary) of wildlife.And more than 1,300 species of 8.(bird) and over 400 species of mammals hide among the forest.
The Amazon rainforest 9. (regard) as the “lungs of the planet” by fixing carbon and producing over 20 per cent of all the Earth’s oxygen.Moreover,the Amazon rainforest 10.(be) a treasure house of species that can be used for food or medicine.
答案 1.largest 2.maintaining 3.with 4.the 5.which 6.known 7.variety 8.birds 9.is regarded 10.is
Ⅳ.概要写作微技能——寻找信息支持句
根据主旨句,在第5段中找出其信息支持句。
Para.3 Each level of the forest forms its own little world,home to different kinds of living things.
At the bottom, there is a system of roots beneath the ground. Above that is the mass of leaf litter on the dark forest floor. The next level is made up of shorter plants with large leaves.Then there are the towering ancient hardwoods,and finally the tops of the tallest trees many metres above the ground.
Para.5 The Amazon rainforest’s importance and the major danger to it.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
答案
The Amazon rainforest breathes life into the planet by fixing carbon and producing over 20 per cent of all the Earth’s oxygen.
Moreover,the Amazon rainforest is a treasure house of species that can be used for food or medicine.
Over the past 50 years,about 17 per cent of the rainforest has disappeared due to human activities such as agriculture and cattle farming.
Ⅴ.创新活动(选做题)
Now discuss the following questions in pairs.After your discussion, try to report it to your class.
1.If this passage is to be expanded, what information do you think could be included in the next paragraph
_______________________________________________________________________________
_______________________________________________________________________________
2.If people continue to damage the “lungs of the planet”, what will be the result
_______________________________________________________________________________
_______________________________________________________________________________
答案
1.Specific descriptions of damage activities, solutions to protect the Amazon rainforest and so on.
2.略
2
