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(共26张PPT)
人教版英语选修三
Unit 3
Environmental Protection
Reading and Thinking
01
02
03
By reading, explain causes and negative effects of global warming.
By teamwork, present how to solve the problem of global warming in groups.
Be aware of the importance of cutting greenhouse gases and take effective action to do it.
Learning Objectives
Pre-reading: Lead in What happened to the polar bear
The polar bear starved to death because it could not find enough food to eat.
The graph is about the change of the global surface temperature.
It shows that the global temperature is rising.
Pre-reading: Lead in
What’ s the graph about
What information can you get from it
Have you seen these before How do you feel about the pictures
Climate change
CLIMATE CHANGE REQUIRES THE WORLD’S ATTENTION
Para. 1 A. The reasons of the increase in global temperature.
Para. 2 B. The problem that Earth is getting warmer and warmer.
Para. 3 C. An example of a dead polar bear.
Para. 4 D. Solutions to reduce greenhouse gas emission.
Para. 5 E. The influences of the rise in temperature..
Solutions
Influences
Reasons
Example
Problem
What type of writing is this passage
A. Argumentative writing (议论文) B. Narrative writing(记叙文)
C. Expository writing (说明文) D. Advertising writing(广告写作)
While-reading: Read for the main idea and the text type
本文是一篇说明文。说明文是客观说明事物的一种文体，以解说或介绍事物的形状、性质、成因、构造、功用、类别等为主要内容。说明文主要通过对客观事物或事理的介绍说明，达到以知识教人的目的，因此说明文以客观、准确为基本要求，强调科学性和客观性。
The ________ is getting warmer and warmer.
Evidence 1: ________________________________________
Evidence 2: ______________
Evidence 2: ___________________
Earth
a warming ocean and atmosphere
melting ice
rising sea levels
climate
change
Problem
While-reading: read for the content Para.1 Problem
It is evident that the earth is getting warmer and warmer,
which leads to the death of the polar bear.
Time
Where
What happened
Why did
it happen
2013
Norway’s Arctic Island of Svalbard.
A polar bear died of starvation.
The bear cannot hunt seals as before.
While-reading: read for the content Para.2 Example
The increase in temperature has an impact on Earth’s ecology.
What is causing the increase in temperature
Q: Two common meanings of greenhouse effect and their consequences.
greenhouse effect
natural greenhouse effect
man-made greenhouse effect
keeping Earth’s climate warm and habitable
causing Earth’s surface temperature to rise quickly if too much heat energy is trapped in the atmosphere
While-reading: read for the content Para.3 Reasons
Draw a diagram
Diagrams are very useful tools that can be used to brainstorm ideas, map out processes, show cause and effect relationships, explain a new idea or concept, and so on. When you read an essay about scientific issues, you can try drawing a diagram, which will not only allow you to visualise the problems more clearly but also can help demonstrate your creative thinking and problem-solving.
Create a diagram describing how the greenhouse effect works. P27.3
A
B
C
E
Heat
reflected back
to planet
Reflected
sunlight
Atmosphere
Sunlight
D
Heat released back into space
Read Paragraph 3-4 and answer the following questions.
Q1: What are the consequences of the global temperature rise
The _____ in temperature
_________ weather and ________ disasters
_________ rainstorms, __________________
lead to
serious damages _________________, __________________
rise
extreme
natural
extreme
heat waves
costing human lives
economic losses
Further thinking :
Why did the author mention the climate scientists’ warning
Because it is essential that we take action and so it needs to be brought to everyone's attention. If not, we will face many bad things.
While-reading: read for the content Para.4 Influences
What can we do
While-reading: read for the content Para.5 Solutions
Read Paragraph 5 and answer the following questions.
Q1: What is the author’s purpose of writing this text
The author's purpose is to inform the readers and inspire them to do whatever they can to deal with this problem.
Q2: Why is a question left at the end
Ask us to think and take appropriate actions to reduce greenhouse gas emissions.
Further thinking
Further thinking:
In our daily, what should we students do to reduce greenhouse gases
Take the stairs instead of elevator
Don't litter
Go to school by bike instead of by car/bus
Turn off the lights when leaving
watch less TV
plant more trees
humans
environment
______________________
animals
_______________
extra greenhouse gases
global warming
Further thinking
harmonious
peaceful
responsibility
Make an interview
Your interview may include:
1. The present situation of the global warming.
2. Measures taken by the government
3. As students, what can we do to deal with global warming
Group work
Interviewer: As we all know, the earth is
becoming warmer and warmer. Do you know
why/ its influences
Student 1:............
Interviewer: what measures did the government take
Student 2:...........
Interviewer: As students, what should we do ？
Student 3：
Use renewable energies/Save energy
Stop using plastic bags/Live a low-carbon life
Take green transportation
Turn off the lights, computers etc. the moment you don’t need them......
Post-reading
Only by changing the way we treat the environment can we get along well with it. Only by saving the environment can we save ourselves.
我们只有政变对待环境的方式，才能和它好好相处。我们只有拯救环境，才能拯救自己。
Post-reading
▲ Write a summary about your interview.
▲ ▲ make a poster to call on students around us pay attention to the global warming
Homework

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