Unit 3 Section Ⅰ Topic Talk & Lesson 1
【学习目标】
1.通过阅读课文内容,意识到环境保护的重要性,树立对自然环境和野生动植物的保护意识。(文化意识,思维品质)
2.通过分析课文结构,了解文本大意,培养略读和查读等阅读能力。(学习能力)
3.通过分析课文细节,培养分析长难句的能力。(学习能力)
【自主预习】
Step 1 单词认读
Ⅰ.词义匹配
( )1.conservation ( )2.plastic
( )3.item ( )4.unrecyclable
( )5.illegally ( )6.informative
( )7.extinct ( )8.species
( )9.endangered ( )10.solar
A.adj.塑料制的
B.n.一项;一条
C.n.保护
D.adv.非法地;违法地
E.adj.有教育意义的;知识性强的
F.adj.不可回收的
G.n.物种;种
H.adj.灭绝的;绝种的
I.adj.太阳光(能)的
J.adj.濒危的
答案 1~5 CABFD 6~10 EHGJI
Ⅱ.默写单词
1. n.威胁;(灾难等坏事)发生的可能
2. vi.& vt.猎取;猎杀
3. adv.非常;极端地
4. adj.异常的;不平常的
5. adj.大量的
6. adj.各种各样的;形形色色的
7. vi.& vt.减少 n.减少;减少的量
8. vt.责怪;指责
9. vi.& vt.(使)孵化
10. vt.(使)恢复
答案 1.threat 2.hunt 3.incredibly 4.unusual
5.mass 6.varied 7.decrease 8.blame 9.hatch
10.restore
Step 2 短语记诵
( )1.have a role ( )2.do one's part
( )3.wipe out ( )4.be to blame
( )5.be at risk ( )6.die out
A.彻底毁灭
B.起某种作用
C.尽自己的职责
D.消失;绝迹;灭绝
E.把……归咎于
F.处境危险;受到威胁
答案 1~6 BCAEFD
【合作探究】
语篇研读
Step 1 先导入,拓展背景知识
Read about the descriptions and match them to the photos.
1. 2.
3. 4.
A.A small animal from Africa or Asia that eats insects, and has a long nose, tongue and tail, and hard scales on its body.
B.A large number of them are killed by poachers(偷猎者) because their fur is very expensive. In the 1990s the Chinese government began to take an active part in protecting them in the Hoh Xil Nature Reserve—the huge national park on the Qinghai-Tibetan Plateau.
C.The animal whose habitat is in Sichuan, China, is the symbol of the World Wide Fund for Nature.
D.It lives in the forests of Southern China. Due to habitat loss caused by deforestation, and being hunted by human poachers, it is considered to be a critically endangered species.
答案 1~4 BCDA
Step 2 再精读,明确概要细节
Ⅰ.Read the passage on Pages 52-53 and match the main idea with each paragraph.
( )1.Para.1 ( )2.Para.2
( )3.Para.3 ( )4.Para.4
A.The effect of human activity on species.
B.The consequences of a sixth extinction.
C.How to avoid a sixth extinction.
D.The mass extinctions in history.
答案 1~4 DABC
Ⅱ.Read the passage on Pages 52-53 carefully and choose the best answers.
1.What did scientists find out in 2015
A.Species die out much faster because of natural causes.
B.Air and water pollution is the main cause of the extinction of species.
C.Factory farming and overfishing can cause the biggest harm to species.
D.Human activity is causing species to die out 1,000 times faster than normal.
2.Which of the following will be to blame for the Earth's coming sixth mass extinction
A.Human activity.
B.Asteroids hitting the Earth from space.
C.The decrease of the oxygen content of the sea.
D.Volcanic eruptions.
3.To avoid the sixth mass extinction, we should do the following EXCEPT .
A.significantly change the way we live
B.take steps to save endangered species
C.get more food from the Earth
D.change how we work and travel by using cleaner, more natural sources of energy
4.What did wildlife workers do to protect black robins
A.They stored Old Blue's eggs to prevent them from being stolen.
B.They protected Old Blue's eggs, helped them to hatch, and took care of the chicks.
C.They brought mice and cats to the islands.
D.They called on people to donate money.
答案 1~4 DACB
Step 3 后结构,分析语篇逻辑
Ⅰ.Read the passage on Pages 52-53 carefully and then fill in the chart.
The meaning of extinction Entire species are 1. .
Extinctions and their consequences There have been 2. when life on Earth has almost ended. The third mass extinction killed 90% to 96% of all species. The fifth mass extinction caused the death of the 3. . If a sixth mass extinction occurs,up to three quarters of all species on Earth could 4. .
Main reasons for extinctions Volcanic eruptions. Asteroids hitting the Earth from space. Changes in 5. . The 6. of the oxygen content of the sea. Global warming. Human 7. .
Steps we need to take to avoid a sixth mass extinction Save 8. species. Change how we work and travel. Improve our 9. . Stop 10. the planet that we live on and start to protect it.
答案 1.wiped out 2.five times 3.dinosaurs 4.die out 5.sea levels 6.decrease 7.activity 8.endangered 9.farming methods 10.destroying
Ⅱ.Write a summary of the passage on Pages 52-53 in about 60 words.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
参考范文
There are a variety of causes for the coming sixth mass extinction, but human activity is the main one of them. (要点1) Human activity speeds up the rate of species to die out, including animals and plants. (要点2) Without the balance in nature between animals and plants, we would be unable to survive. (要点3) However, only if we take action to change our lifestyle can a sixth extinction be avoided.(要点4)
Ⅲ.长难句分析
Without forests, we would have no air to breathe,
and without clean water we would be unable to survive.
善分析 此句是由and连接的并列句。第1个分句中without和no构成双重1. ,以加强语气。without 还可以表示“如果没有”,用于虚拟语气,相当于2. 。
会翻译 3.
答案 1.否定 2.but for 3.没有森林,我们就没有可以呼吸的空气;没有干净的水,我们就无法生存。
【随堂检测】
夯实基础
Ⅰ.品句填空
1.It is reported that some rare (物种) have been discovered in this mountain.
2.The number of students in some rural schools has (减少) sharply in recent years.
3.Nobody but I should be to (责备).
4.The sharp noise from the construction site badly (影响) my health.
5.These (濒危的) animals should be under careful conservation.
6.As you know, (太阳的) energy does no harm to our planet.
7.The little boy tried to (孵化) these eggs by putting them under his arms.
8.It will take us many years to (恢复) the ecology in this area.
9.The climate this year is quite (异常的) from average years.
10.You can see (各种各样的) animals and plants in this forest.
答案 1.species 2.decreased 3.blame
4.affects 5.endangered 6.solar 7.hatch
8.restore 9.unusual 10.varied/various
Ⅱ.语法填空
In the last few decades, it 1. (report) that the Earth's climate is being changed and human beings are facing global warming. Global warming refers to 2. average increase in the Earth's temperature, 3. , in turn, leads to climate changes. The global average temperature has increased 4. 1°F over the last 100 years because of human 5. (active). If the situation 6. (continue), we are condemning life on Earth and should face terrible climate changes, serious diseases and bad effects on some industries as well as the 7. (rise) sea levels. So how can we stop these disasters from 8. (happen) Governments all over the world have a 9. (responsible) to reduce the amount of carbon dioxide 10. (produce) by their countries. Everyone can play his part by making small changes in his daily life.
答案 1.has been reported 2.an 3.which 4.by 5.activity 6.continues 7.rising 8.happening 9.responsibility 10.produced
Ⅲ.概要写作微技能
对文中各个段落的主题句进行高度概括
1.Para.1:In the last 500 million years,there have been five times when life on Earth has almost ended.
→_____________________________________________________________________________
2.Para.2:They found that human activity is causing species to die out 1,000 times faster than normal.
→_____________________________________________________________________________
3.Para.3:Of course,as we humans depend on so many species for our survival,we would also be at risk of dying out.
→_____________________________________________________________________________
4.Para.4:Can a sixth extinction be avoided Experts say that it is not yet too late,if we take action now.
→_____________________________________________________________________________
答案
1.There have been five mass extinctions in history.
2.It is human activity that is causing species to die out much faster.
3.Man is also at risk of dying out.
4.A sixth extinction can be avoided if we take action now.
2(共20张PPT)
UNIT 3 CONSERVATION
Section Ⅰ Topic Talk & Lesson 1
1.通过阅读课文内容,意识到环境保护的重要性,树立对自然环境和野生动植物的保护意识。(文化意识,思维品质)
2.通过分析课文结构,了解文本大意,培养略读和查读等阅读能力。(学习能力)
3.通过分析课文细节,培养分析长难句的能力。(学习能力)
Ⅰ.词义匹配
( )1.conservation ( )2.plastic
( )3.item ( )4.unrecyclable
( )5.illegally ( )6.informative
( )7.extinct ( )8.species
( )9.endangered ( )10.solar
A.adj.塑料制的
B.n.一项;一条
C.n.保护
D.adv.非法地;违法地
E.adj.有教育意义的;知识性强的
F.adj.不可回收的
G.n.物种;种
H.adj.灭绝的;绝种的
I.adj.太阳光(能)的
J.adj.濒危的
C
A
B
F
D
E
H
G
J
I
Ⅱ.默写单词
1. n.威胁;(灾难等坏事)发生的可能
2. vi.& vt.猎取;猎杀
3. adv.非常;极端地
4. adj.异常的;不平常的
5. adj.大量的
6. adj.各种各样的;形形色色的
7. vi.& vt.减少 n.减少;减少的量
8. vt.责怪;指责
9. vi.& vt.(使)孵化
10. vt.(使)恢复
threat
hunt
incredibly
unusual
mass
varied
decrease
blame
hatch
restore
( )1.have a role ( )2.do one's part
( )3.wipe out ( )4.be to blame
( )5.be at risk ( )6.die out
A.彻底毁灭
B.起某种作用
C.尽自己的职责
D.消失;绝迹;灭绝
E.把……归咎于
F.处境危险;受到威胁
B
C
A
E
F
D
1. 2.____________
3. 4._____________
Step 1 先导入,拓展背景知识
Read about the descriptions and match them to the photos.
B
C
D
A
A.A small animal from Africa or Asia that eats insects, and has a long nose, tongue and tail, and hard scales on its body.
B.A large number of them are killed by poachers(偷猎者) because their fur is very expensive. In the 1990s the Chinese government began to take an active part in protecting them in the Hoh Xil Nature Reserve—the huge national park on the Qinghai-Tibetan Plateau.
C.The animal whose habitat is in Sichuan, China, is the symbol of the World Wide Fund for Nature.
D.It lives in the forests of Southern China. Due to habitat loss caused by deforestation, and being hunted by human poachers, it is considered to be a critically endangered species.
Step 2 再精读,明确概要细节
Ⅰ.Read the passage on Pages 52-53 and match the main idea with each paragraph.
( )1.Para.1 ( )2.Para.2
( )3.Para.3 ( )4.Para.4
A.The effect of human activity on species.
B.The consequences of a sixth extinction.
C.How to avoid a sixth extinction.
D.The mass extinctions in history.
D
A
B
C
Ⅱ.Read the passage on Pages 52-53 carefully and choose the best answers.
1.What did scientists find out in 2015
A.Species die out much faster because of natural causes.
B.Air and water pollution is the main cause of the extinction of species.
C.Factory farming and overfishing can cause the biggest harm to species.
D.Human activity is causing species to die out 1,000 times faster than normal.
D
2.Which of the following will be to blame for the Earth's coming sixth mass extinction
A.Human activity.
B.Asteroids hitting the Earth from space.
C.The decrease of the oxygen content of the sea.
D.Volcanic eruptions.
3.To avoid the sixth mass extinction, we should do the following EXCEPT .
A.significantly change the way we live
B.take steps to save endangered species
C.get more food from the Earth
D.change how we work and travel by using cleaner, more natural sources of energy
A
C
4.What did wildlife workers do to protect black robins
A.They stored Old Blue's eggs to prevent them from being stolen.
B.They protected Old Blue's eggs, helped them to hatch, and took care of the chicks.
C.They brought mice and cats to the islands.
D.They called on people to donate money.
B
Step 3 后结构,分析语篇逻辑
Ⅰ.Read the passage on Pages 52-53 carefully and then fill in the chart.
The meaning of extinction Entire species are 1. .
Extinctions and their consequences There have been 2. when life on Earth has almost ended.
The third mass extinction killed 90% to 96% of all species.
The fifth mass extinction caused the death of the 3. .
If a sixth mass extinction occurs,up to three quarters of all species on Earth could 4. .
wiped out
five times
dinosaurs
die out
Main reasons for extinctions Volcanic eruptions.
Asteroids hitting the Earth from space.
Changes in 5. .
The 6. of the oxygen content of the sea.
Global warming.
Human 7. .
Steps we need to take to avoid a sixth mass extinction Save 8. species.
Change how we work and travel.
Improve our 9. .
Stop 10. the planet that we live on and start to protect it.
sea levels
decrease
activity
endangered
farming methods
destroying
Ⅱ.Write a summary of the passage on Pages 52-53 in about 60 words.
There are a variety of causes for the coming sixth mass extinction, but human activity is the main one of them. (要点1) Human activity speeds up the rate of species to die out, including animals and plants. (要点2) Without the balance in nature between animals and plants, we would be unable to survive. (要点3) However, only if we take action to change our lifestyle can a sixth extinction be avoided.(要点4)
Ⅲ.长难句分析
Without forests, we would have no air to breathe, and without clean water we would be unable to survive.
善分析 此句是由and连接的并列句。第1个分句中without和no构成双重1. ,以加强语气。without 还可以表示“如果没有”,用于虚拟语气,相当于2. 。
会翻译 3._______________________________________________________
否定
but for
没有森林,我们就没有可以呼吸的空气;没有干净的水,我们就无法生存。
Ⅰ.品句填空
1.It is reported that some rare (物种) have been discovered in this mountain.
2.The number of students in some rural schools has (减少) sharply in recent years.
3.Nobody but I should be to (责备).
4.The sharp noise from the construction site badly (影响) my health.
5.These (濒危的) animals should be under careful conservation.
species
decreased
blame
affects
endangered
6.As you know, (太阳的) energy does no harm to our planet.
7.The little boy tried to (孵化) these eggs by putting them under his arms.
8.It will take us many years to (恢复) the ecology in this area.
9.The climate this year is quite (异常的) from average years.
10.You can see (各种各样的) animals and plants in this forest.
solar
hatch
restore
unusual
varied/various
Ⅱ.语法填空
In the last few decades, it 1. (report) that the Earth's climate is being changed and human beings are facing global warming. Global warming refers to 2. average increase in the Earth's temperature, 3. , in turn, leads to climate changes. The global average temperature has increased 4. 1°F over the last 100 years because of human 5. (active). If the situation 6. (continue), we are condemning life on Earth and should face terrible climate changes, serious diseases and bad effects on some industries as well as the 7. (rise) sea levels. So how can we stop these disasters from 8. (happen) Governments all over the world have a 9. (responsible) to reduce the amount of carbon dioxide 10. (produce) by their countries. Everyone can play his part by making small changes in his daily life.
has been reported
an
which
by
activity
continues
rising
happening
responsibility
produced
Ⅲ.概要写作微技能
对文中各个段落的主题句进行高度概括
1.Para.1:In the last 500 million years,there have been five times when life on Earth has almost ended.
→
2.Para.2:They found that human activity is causing species to die out 1,000 times faster than normal.
→
There have been five mass extinctions in history.
It is human activity that is causing species to die out much faster.
3.Para.3:Of course,as we humans depend on so many species for our survival,we would also be at risk of dying out.
→
4.Para.4:Can a sixth extinction be avoided Experts say that it is not yet too late,if we take action now.
→
Man is also at risk of dying out.
A sixth extinction can be avoided if we take action now.
