人教版高中英语选修六Unit4 Global Warming Reading课件(21张ppt)

(共21张PPT)
Words study
Global Warming
Learning aims
1.Practise some reading skills: skimming, scanning, and intensive reading.
2.Learn some new words and phrases.
3.Raise the awareness of protecting environment.
2.What causes these phenomena(现象)
Global warming.
1.What phenomena did you see in this video
The snow is melting.
The flowers bloom earlier.
People may lose work.
The Earth Is Becoming Warmer
--But Does It Matter
New words and phrases
1.Please tell me how the accident came about. ( happen / cause )
2.I subscribe to this opinion. ( agree with / decide on )
3.A gas leak(煤气泄漏) can result in a fire. ( cause / course )
4.This is a catastrophe beyond human control. ( difficulty / disaster )
5.He suffered from a mild heart attack. ( sight / slight )
6.The consequence of a rising sea level would be widespread flooding. (response / result )
-
-
-
-
-
-
(1) What is the writing style of the passage
Exposition（说明文）
B. Argumentation（议论文）
C. Narration(记叙文）
giving examples,
using graphs,
giving a definition,
using figures,
discussion
Task 1:Skimming
(2) What does the passage mainly talk about
A. The cause of global warming
B. Two different attitudes towards global warming
C. It doesn’t matter that the earth is becoming warmer
D. Both A and B
Part
Part2
Part3
C. Introduction of global warming
(1)
(2-5)
(6)
A. How global warming comes about
B. List two different attitudes towards global warming
Part4
(7)
D. Whether people should do something about global warming
(2) Match the main idea of each part.
giving examples,
using graphs
and quotes(引言）
giving examples,
making contrast
leaving a question
raising a question
Part 2:
(1) What has caused this global warming
(2) What’s greenhouse effect
(3) Do we need the greenhouse gases Why
(4) What do the two graphs show us
Part 3:
Who are the two scientists And what are
their opinions about global warming
Task2: Scanning
(1) What has caused this global warming
___________________________
Human activity
burning of fossil fuels
There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming…
Task 2: Scanning
(2) What’s greenhouse effect
This is when small amounts of gases in the
atmosphere, like
carbon dioxide, methane
and water vapour,
trap
heat from the sun
and therefore the earth.
warm
(3) Do we need the greenhouse gases Why
Yes, because without the greenhouse effect, the earth would be about thirty-three degrees Celsius cooler than it is.
Who are the two scientists And what are their opinions about global warming
Name Opinion
_______ An increase by 5 degrees would lead to a ___________, and it could be___________.
Possible results:
_______ More carbon dioxide is a ________ thing, which will make plants _________ and will encourage ____________
Janice Foster
George Hambley
catastrophe
very serious
positive
a greater range of animals
grow quicker
a rise of the sea level, severe storms, floods, droughts......
Read the passage carefully and judge whether the statements are true or false.
1. Not all scientists believe that the increase in the earth’s temperature is due to the burning of fossil fuels.
2. George Hambley believes that global warming will do good rather than harm to the earth.
3. It is clear what the effects of global warming will be.
F
T
F
1. Who found out the amount of carbon dioxide in the atmosphere from 1957 to 1977
A. Dr Janice Foster.
B. Charles Keeling.
C. George Hambley.
D. Sophie Armstrong.
Task3: Intensive reading
Para.1: It introduces the natural phenomenon of a rapid of temperature when to other natural changes.
Para. 2: There is no doubt the cause of the earth's becoming
is human activity.
Para. 3: All scientists the view that the global warming is the consequence of burning fossil fuels.
Para. 4: A scientist found carbon dioxide had increased by accurate
Para. 5: All scientists agree the fact that global warming will go on because the burning of more fussil fuels will the increase of carbon dioxide.
increase
compared
that
warmer
subscribe to
measurements
result in
Para. 6 : There are two different attitudes to global warming: Some scientists think that any in the temperature increase would lead to a catastrophe; others, who are to them, think that there are no serious bad consequences of global warming.
Para. 7 : Although the climate is going to keep warming, there are also puzzles about global warming.
trend
opposed
on
Write a complete passage about WHAT CAN WE DO ABOUT GLOBAL WARMING.
1 ) the harm of global warming
2) what can we do
3) your opinion
Task 4 Homework
Plastic bags
Paper bags
Plant trees
Turn electrical appliances off
参考句式：
1.There is no doubt that......
2.have harmful effects on
3.suffer from
4.It is high time that......should do...
5.renewable energy
6.make great efforts to do......
7.Only in this way can we......
8.replace sth. with sth.