资源简介

(共32张PPT)
A delicate world
unit 5
Understanding ideas
from Chaos to Conservation
Macquarie Island:
新标准《英语》高中选择性必修第二册
Question:
What will happen if all these animals are put in the island
＋
I think the island will be _______.
native inhabitants
non-native inhabitants
=
crowded 拥挤的
destroyed毁掉的
damaged 受损的
chaotic 混乱的...
Let’s read the passage and find out...
Read for the main idea
1. Read the title and predict the main idea of the passage.
Macquarie Island:
from Chaos to Conservation
/'ke s/ n.混乱；紊乱
/k ns 've n/ n.
（对自然环境的）保护
n. a state of complete confusion and lack of order
n. protection of the natural environment
1.The Main idea: What happened to Macquarie island
_______( Native inhanbitant / Non-native species) introduced to Macquarie Island ______( helped / attacked ) native birds, and led to a __________( subtle / substantial) reduction of bird population and even the extinction(灭绝) of parakeets. In addition, non-native species ate and destroyed the native vegetation. All of this played a part in_______( upsetting /cheering ) the natural harmony of the island. But now the island’s ecology（生态） is on the road to____( destruction / recovery) with human efforts.





微小的
大量的
Let’s read it !
Non-native species introduced to Macquarie Island attacked native birds, and led to a substantial reduction of bird population and even the extinction(灭绝) of parakeets. In addition, non-native species ate and destroyed the native vegetation. All of this played a part in upsetting the natural harmony of the island. But now the island’s ecology（生态）is on the road to recovery with human efforts.
Divide it into three parts, and get the main idea of each part.
Read for structure
Part 1 Para_____　　
Part 2 Paras_____
Part 3 Paras_____
An introduction to the island
1
2-3
4-6
the_______________ of the island
the ________________ of the island
chaos
conservation
_____________________________
Read for details
location
shape
landscape
inhabitants
in the South-west Pacific ocean , halfway between Australia and Antarctica.
long and thin
green grass and bare rock contrast dramatically, giving it a wild and natural beauty.
royal penguins, king penguins and elephant seals

live in perfect harmony with their natural habitat...
but now
1. Find the detailed description of Macquarie island in paragraph 1.
strong winds and stormy seas
What happened to Macquarie Island before the 1970s
Actions
Purposes
Results
To live there.
unknowingly brought rats and mice
Cats were brought to the island.
The cats developed an appetite for ...
To provide food for humans.
The end result was that parakeets died out
It became an official nature reserve
With this goal in mind, a virus was released
The last cat was caught in 2000.
the mouse and rat population increased …
1970s
1980s-2000
2006
This incident made it clear that the problem needed solving.
Rabbits were reduced, but in consequence cats killed more birds.
Traps and dogs were used...
What happened to Macquarie Island after the 1970s
The rabbits caused...（10000）
What happened to Macquarie Island after 2006
Mission
Measures
The first step involves poison being dropped from helicopters.
The next step is to remove the last remaining invading species, and that’s where “I” come in- with my dog.
To participate in the programme to
tackle this very problem.
Choose the author’s purpose in writing the passage .
1　To analyse how Macquarie Island was saved from destruction.
2　To inform readers of the chaos caused on Macquarie Island by humans.
3　To entertain readers with a funny story about what happened on Macquarie Island.
4　To suggest ways in which an ecosystem can be protected.
Exercise
in 1810
in 1891
in the 1970s
in the 1980s
in 2006
almost 200years
The influence is deep and severe.
Who is the chief (最主要的）invading species
post-reading
...we humans owe it to the island to give it a happy ending.
(Whoever started the trouble should end it!)
解铃还须系铃人
Para 6:
It is humans that have damaged the _______________ of the Macquarie island and it is humans’ _________ to help it return to normal.
ecosystem/ balance
duty
From the passage we know that just because of a small event, human beings have paid such a huge price."
Post-reading: Think and share
How could similar situations be avoided in the future
Clear Waters and Lush Mountains are as Valuable as Gold and Sliver.
Xi Jinping
To avoid similar situations in the future, we should...
_______ should play a part in protecting the environment.
Everyone
Our country should__________________
People should ___________________
They shouldn’t__________________
As students, we should__________________
Group work
As high school students, we can...
plant more plants
collect waste for recycling
prevent pouring waste water into river, lake and field
don’t pick the flowers or step on the grass in public
tell people fully realize the importance of environment protection through education
reduce the use of plastic bags
reduce the use of electrical appliances
take less private car .
stop wasting
protect the natural ecosystem ;
prevent species invasion caused by humans
3. be aware of the potential influence on nature;
4. live in the harmony with the nature ;
5. take the road of sustainable development;
保护自然生态系统
要意识到对自然的潜在影响
与自然和谐相处
走可持续发展之路……
防止人类造成的物种入侵
post-reading
Better late than never！
In 2014, Macquarie Island is pest-free and its ecology is
on the road to recovery.
Are there similar situations in our country
Kubuqi
desert
recent history
now
ancient time
链接高考：
讷河市第二中学高二年级13班同学们具有高度的社会责任感和环境保护意识。学校下周将举办一个主题为“Clear Waters and Lush Mountains Are as Valuable as Gold and Silver”的英文演讲比赛，你准备一篇演讲稿参赛，内容包括：
1.你对本次比赛主题的理解；
2.举例说明问题(1-2个）；
3.号召全校同学行动起来贡献自己的一份力量(措施2-3个）。
Good morning, everyone.
It’s my great honor to give a lecture here on “Clear Waters and Lush Mountains Are as Valuable as Gold and Silver”.
President Xi’s words reminds us that we should... With the development of modern industry, ....（问题）
Therefore, . It’s our duty to...(措施)
1. How did rats and mice get to Macquarie Island
A．On purpose.
B．By accident.
C．They came by themselves.
D．They were there.
Consolidation
2.When did Macquarie Island’s tragic story begin
A．In 1870.
B．When humans arrived on the island.
C．When humans planted many different plants there.
D．When people raised rabbits there.
3. Which of the following animals weren’t brought to the island by humans
A．Parakeets. B．Cats.
C．Mice. D．Rabbits.
4.Which way was mentioned to remove the rabbits
A．Using traps and dogs.
B．Raising more cats.
C．Releasing a virus onto the island.
D．Killing them.
5. What were dogs trained to do
A．How to drop poison from helicopters.
B．How to remove the last remaining invasive species.
C．Give the island a happy ending.
D．Find every prey without harming the local animals.
Homework
Level 1: Finish the writing“Clear Waters and Lush Mountains Are as Valuable as Gold and Silver”
Level 2: Write down the useful measures that can be used to solve the environmental problems.
Summary
Small action, but big chaos！
Protect the nature, and keep ecological balance！
Thank You !

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