unit 5A delicate world Macquire island 课件 外研版 选择性必修二

(共28张PPT)
Macquarie Island:
from Chaos to Conservation
高二英语组——
Learning objectives
In this class, you will
learn about basic information of Macquarie Island;
organize the structure of the passage;
find out the detailed information in the passage;
raise awareness of environmental protection.
decrease
departure
tackle
intervention
pest-free
multiply
chaos
conservation
9. vegetation
10. habitat
immunity
soil erosion
invading species
in consequence
in harmony with
下降
离开
解决
干预
无害虫的
增加
混乱
保护
结果是
植被
土壤侵蚀
栖息地
免疫力
入侵物种
与 ---和谐共处
Quiz
Before-reading
1. What animals can you see in the picture
2. What kind of changes would take place if cats, rats and rabbits were introduced to an environment like this
They would hurt the birds and eat the native vegetation, thus upsetting the local ecological balance.
A bird and penguins.
Cats eat rats,birds and rabbits.
Rats eat birds’ eggs and attack baby birds.
Rabbit eat vegetation and dig holes,which caused soil erosion and land callapse .And it kills many penguins.
Lead-in
Macquarie Island:
Chaos
to
Conservation
from
(Para2-3)
(Para4-6)
(Para1)
Title&structure
While-reading
Part1:the introduction to Macquarie Island
Macquarie Island
ADD YOUR TITLE HERE
Macquarie Island(麦夸里岛) Location
Shape
Landscape
Title
Inhabitants
in the ____________Pacific Ocean between ________
_______ and _______ shape caused by _______ wind and ___________
___________ and ________ contrast ___________
_____________________
________ and _______ penguins, _________
and _________
Australia
Antarctica
Pacific Ocean
South-west
Australia
Antarctica
ADD YOUR TITLE HERE
Macquarie Island(麦夸里岛) Location
Shape
Landscape
Title
Inhabitants
in the ____________Pacific Ocean between ________
_______ and _______ shape caused by _______ wind and ___________
___________ and ________ contrast ___________
a _________ and ________ beauty
________ and _______ penguins, _________
and _________
South-west
Australia
Antarctica
long
thin
strong
stormy seas
ADD YOUR TITLE HERE
Macquarie Island(麦夸里岛) Location
Shape
Landscape
Title
Inhabitants
in the ____________Pacific Ocean between ________
_______ and _______ shape caused by _______ wind and ___________
___________ and ________ contrast ___________
____________________________
________ and _______ penguins, _________
and _________
South-west
Australia
Antarctica
long
thin
strong
stormy seas
green grass
bare rock
dramatically
UNESCO World Heritage Site
royal
king
elephant seals
The creatures on Macquarie Island:
Elephant seal
Royal penguin
Sooty albatross
(乌信天翁)
King penguin
Part2:the chaos of the island
ADD YOUR TITLE HERE______ on the island and __________ brought______________________develop an _______unknowinglyeatattackbroughtcontrolappetiteWhat were introduced then Read para 2 and completethe mindmap.A tragic storyarrivedCats were brought to the island.
they took over the island, eating the birds’ eggs and attacking baby birds
The cats developed an appetite for the birds.
Rabbits were introduced to the island.
To provide food for humans.
the exploding rabbit population provided plentiful food for the cats. This led to more cats hunting the birds. As a result, parakeets died out in 1891.
Read para 3 and complete
the chart.
Part3:the conservation of the island
the measures to deal with the chaos




Time
Measure(s)
Purpose(s)
Result(s)
Read Part 3(paras.4-6)&postscript, and fill in the blanks.
after the 1970s
in the 1980s
after 2006
____ was released
__________ were used.
to remove
_______________
to__________
to remove all the
remaining invading
species
The last cat was caught
in _______.The mouse and rat population started to ________.
a virus
traps &dogs
catch the cats
The rabbit population _______,
but later they developed an
________ to the virus and their numbers _______ once again.
The cats turned their stomachs back to ______ .
all the rabbits
decreased
immunity
exploded
native birds
2000
increase
______ and _____ were used.
poison
dogs
In 2014, the island was ________ and its ecology is on the road to ________
pest-free
recovery
proper
Humans’____________measures may do greater harm to ecology.
improper
ADD YOUR TITLE HERE
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Read paragraph 6 and answer these questions
What’s the writer’s mission on the island
What do you think is to blame for the chaos in Macquarie Island
So I am here on Macquarie Island to participate in the programme to tackle this very problem. The first step involved 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 dogs. They have been trained to find every last one, without harming the native animals
2.What do you think is to blame for the chaos in Macquarie Island
rats&mice
cats
rabbits
human’s careless behaviors
human's improper measures
“We humans owe it to the island to give it a happy ending.”
3.Retell the measures of conservation according to the mind map
relesevirus
less food
kill
While the cat’s away,
the mice will play
immunity
kill
use traps and dogs
poison and dogs
poison and dogs
pest-free
recover
a sad story
Post-reading
Group work
Disscuss in groups and think about the following question.
1.What should we do to protect the ecology
In order to protect the ecology, we should...
Discussion
In order to protect the ecology, we should
plant more trees
protect animals
recycle things
stop polluting air and water
live a green life
Green travel
Save resources
Avoid using disposable items
...
Macquarie Island used to be a 1.________(natural) beautiful place but everything changed when humans arrived on the island. They brought rats and mice onto the island, and these small animals quickly took over the island, 2__________(eat) the birds` eggs and attacking baby birds. Cats were brought to the island to control the rats and mice. 3_______________(fortunate), the cats subsequently developed 4_____________ appetite for the birds too. Meanwhile, rabbits 5_________________(introduce) to the island as a source of food for humans, but they multiplied rapidly and began eating the native vegetation and digging holes, 6____________ caused soil erosion.
The exploding rabbit population provided plentiful food for the cats. 7_________ consequence, the number of cats also increased. This in turn led to more cats 8_______________(hunt) the birds. Later, a virus was released onto the island, and the rabbit population decreased. But meanwhile the cats killed more birds for lack of food. In the 1980s, traps and dogs were used 9_____________(catch) the cats, and it worked. With the departure of cats from the island, the mouse and rat population increased again. The rabbits also developed an immunity to the virus, and their number s exploded again. This incident made 10________ clear that the problem needed solving once and for all .
eating
Unfortunately
an
were introduced
which
In
hunting
to catch
it
naturally
Summary
Small actions, but great changes！
Protect the nature, and
keep ecological balance！
Homework
Write a speech of 80 words to call on(呼吁) people to protect the ecology. The following aspects should be included:
1. Introduce the chaos of Macquarie island.
2. What we should do to protect the ecology.