Unit 5 A delicate World Understanding idea课件(共16张PPT,内镶嵌视频)外研版(2019)选择性必修第二册
文档属性
| 名称 | Unit 5 A delicate World Understanding idea课件(共16张PPT,内镶嵌视频)外研版(2019)选择性必修第二册 |  | |
| 格式 | pptx | ||
| 文件大小 | 37.2MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2025-10-03 23:27:19 | ||
图片预览
文档简介
(共16张PPT)
Unit 5
A delicate world
Learning Objectives
By the end of the class, you will be able to:
find out what happened to Macquarie Island;
use mind maps and tables to present humans’ actions, purposes and the results;
talk about how similar situations can be avoided in the future.
What animals are they
royal penguins
皇家企鹅
king penguins
帝企鹅
elephant seals
海象
sea mew
海鸥
They have been living on Macquarie Island for thousands of years.
native inhabitants
Activity 1 Lead-in
rabbit
mouse/rat
cat
What will happen if these non-native inhabitants are put to Macquarie Island
The island may be .
non-native inhabitants
What animals are they
Activity 1 Lead-in
crowded/destroyed
in a mess
...
/'ke s/ n. a state of complete confusion and lack of order
/k ns 've n/ n. the protection of the natural environment
混乱；杂乱
（对自然环境的）保护
_______( Native inhabitant / 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 devastated(摧毁) 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.
Task 1:Read the passage quickly and find out what happened to Macquarie Island.
Activity 2 Fast Reading
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 devastated(毁灭) 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.
Activity 2 Fast Reading
Let’s read it together.
Part 1 Para 1: the chaos caused by the invading species on Macquarie Island
Part 2 Paras 2-3: the conservation of Macquarie Island
Part 3 Paras 4-6: a brief introduction to Macquarie Island
Task 2: Read the passage quickly and match the main idea of each part.
Activity 2 Fast Reading
Activity 3 Careful Reading
Task1: Watch a short video and appreciate the beauty of Macquarie Island.
But something tragic happend...
Task 2: Read paras. 2-3 and draw a mind map to show what happened to Macquarie Island before the 1970s.
Humans on
the island.
unknowingly
attacked
ate
to
an appetite
Activity 3 Careful Reading
introduced
quickly
the native vegetation
holes
soil erosion
plentiful food for cats
hunted
The parakeets died out and the island was in chaos.
multiplied
ate
dug
caused
provided
arrived
brought
brought
control
developed
Humans’ actions have a influence on the ecology(生态).
bad
careless
Task 3: Read paras. 4-6&postscript and fill in the blanks.
Activity 3 Careful Reading
Humans’____________measures may do greater harm to ecology(生态).
improper
In the 1970s In the 1980s From 2006 to 2014
Measure(s) was relased on the island. were used. Poison and dogs were used.
Purpose(s) To remove . To catch the cats. To remove .
Result(s) Substantial reduction of rabbit population led to cats killing more . The departure of the cats resluted in an increasing population of . The rabbit population once again. The island is and its ecology is
.
Time
A virus
Traps and dogs
all the rabbits from the island
all the remaining invading species
native birds
rats and mice
exploded
pest-free
on the road to recovery
rats&mice
cats
rabbits
1.Who do you think is responsible for the chaos on Macquarie Island, and why
humans’ careless behaviors
humans’ improper measures
Since it is we humans that are to blame for the ecological problem with the island, we must shoulder the responsibility to make efforts to recover the ecology of it.
Activity 4 Post Reading
2. From this story, do you know how similar situations can be avoided in the future Discuss in groups and share your ideas.
Raise the awareness of protecting the natural ecosystem.
Be aware of the potential impact that human activities can have on ecosystems.
Avoid unnecessary huaman intervention.
Think twice before action when tackling problems.
Maintain the balance between humans and nature.
...
Activity 4 Post Reading
Macquarie Island takes on a long, thin shape,1. is because of strong
winds and 2. (storm) seas. It is a UNESCO World Heritage Site. Its native
inhabitants existed in perfect harmony with their natural habitat for thousands of
years. In 1810, humans arrived on the island with rats and mice unknowingly.
These animals quickly took over the island, 3. (bring) disasters to birds. Unfortunately cats intended to control rats and mice 4. an appetite
for birds, too. Later, rabbits 5. (introduce) but they led to greater
damage to the island. Experts came up with a plan to release a virus 6. (kill)
the rabbits, but afterwards, they developed an immunity 7. the virus, and their
8. (number) exploded once again. This incident made 9. clear that the
rat, mouse and rabbit problem needed solving once and for all. I am here to tackle
this problem. I brought trained dogs to remove the last 10. (remain)
invading species. I hope we humans owe it to the island to give it a happy ending.
which
stormy
bringing
were introduced
to kill
to
numbers
it
remaining
Activity 4 Post Reading
3. Fill in the blanks with the correct words.
developed
Human
nature
Summary
chaos
conservation
harmony
Humans broke the balance
of the ecosystem.
Humans tried to conserve the ecosystem.
Macquarie Island
April 22 is World Earth Day. Design a poster to call on the students in our school to protect our Earth. In the poster you are required to list at least 5 practical do’s and don’ts.
Assignment
Unit 5
A delicate world
Learning Objectives
By the end of the class, you will be able to:
find out what happened to Macquarie Island;
use mind maps and tables to present humans’ actions, purposes and the results;
talk about how similar situations can be avoided in the future.
What animals are they
royal penguins
皇家企鹅
king penguins
帝企鹅
elephant seals
海象
sea mew
海鸥
They have been living on Macquarie Island for thousands of years.
native inhabitants
Activity 1 Lead-in
rabbit
mouse/rat
cat
What will happen if these non-native inhabitants are put to Macquarie Island
The island may be .
non-native inhabitants
What animals are they
Activity 1 Lead-in
crowded/destroyed
in a mess
...
/'ke s/ n. a state of complete confusion and lack of order
/k ns 've n/ n. the protection of the natural environment
混乱；杂乱
（对自然环境的）保护
_______( Native inhabitant / 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 devastated(摧毁) 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.
Task 1:Read the passage quickly and find out what happened to Macquarie Island.
Activity 2 Fast Reading
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 devastated(毁灭) 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.
Activity 2 Fast Reading
Let’s read it together.
Part 1 Para 1: the chaos caused by the invading species on Macquarie Island
Part 2 Paras 2-3: the conservation of Macquarie Island
Part 3 Paras 4-6: a brief introduction to Macquarie Island
Task 2: Read the passage quickly and match the main idea of each part.
Activity 2 Fast Reading
Activity 3 Careful Reading
Task1: Watch a short video and appreciate the beauty of Macquarie Island.
But something tragic happend...
Task 2: Read paras. 2-3 and draw a mind map to show what happened to Macquarie Island before the 1970s.
Humans on
the island.
unknowingly
attacked
ate
to
an appetite
Activity 3 Careful Reading
introduced
quickly
the native vegetation
holes
soil erosion
plentiful food for cats
hunted
The parakeets died out and the island was in chaos.
multiplied
ate
dug
caused
provided
arrived
brought
brought
control
developed
Humans’ actions have a influence on the ecology(生态).
bad
careless
Task 3: Read paras. 4-6&postscript and fill in the blanks.
Activity 3 Careful Reading
Humans’____________measures may do greater harm to ecology(生态).
improper
In the 1970s In the 1980s From 2006 to 2014
Measure(s) was relased on the island. were used. Poison and dogs were used.
Purpose(s) To remove . To catch the cats. To remove .
Result(s) Substantial reduction of rabbit population led to cats killing more . The departure of the cats resluted in an increasing population of . The rabbit population once again. The island is and its ecology is
.
Time
A virus
Traps and dogs
all the rabbits from the island
all the remaining invading species
native birds
rats and mice
exploded
pest-free
on the road to recovery
rats&mice
cats
rabbits
1.Who do you think is responsible for the chaos on Macquarie Island, and why
humans’ careless behaviors
humans’ improper measures
Since it is we humans that are to blame for the ecological problem with the island, we must shoulder the responsibility to make efforts to recover the ecology of it.
Activity 4 Post Reading
2. From this story, do you know how similar situations can be avoided in the future Discuss in groups and share your ideas.
Raise the awareness of protecting the natural ecosystem.
Be aware of the potential impact that human activities can have on ecosystems.
Avoid unnecessary huaman intervention.
Think twice before action when tackling problems.
Maintain the balance between humans and nature.
...
Activity 4 Post Reading
Macquarie Island takes on a long, thin shape,1. is because of strong
winds and 2. (storm) seas. It is a UNESCO World Heritage Site. Its native
inhabitants existed in perfect harmony with their natural habitat for thousands of
years. In 1810, humans arrived on the island with rats and mice unknowingly.
These animals quickly took over the island, 3. (bring) disasters to birds. Unfortunately cats intended to control rats and mice 4. an appetite
for birds, too. Later, rabbits 5. (introduce) but they led to greater
damage to the island. Experts came up with a plan to release a virus 6. (kill)
the rabbits, but afterwards, they developed an immunity 7. the virus, and their
8. (number) exploded once again. This incident made 9. clear that the
rat, mouse and rabbit problem needed solving once and for all. I am here to tackle
this problem. I brought trained dogs to remove the last 10. (remain)
invading species. I hope we humans owe it to the island to give it a happy ending.
which
stormy
bringing
were introduced
to kill
to
numbers
it
remaining
Activity 4 Post Reading
3. Fill in the blanks with the correct words.
developed
Human
nature
Summary
chaos
conservation
harmony
Humans broke the balance
of the ecosystem.
Humans tried to conserve the ecosystem.
Macquarie Island
April 22 is World Earth Day. Design a poster to call on the students in our school to protect our Earth. In the poster you are required to list at least 5 practical do’s and don’ts.
Assignment