Unit4 Global Warming up and reading课件（18张PPT）

(共18张PPT)
Reading: The earth is becoming warmer
--- But does it matter
Unit 4 Global warming
Supply falls short of demand.
Quiz
1. For lack of sunlight and heat in winter, generally speaking, the supply of vegetables falls in short of demand. Thus, the price of vegetables is much higher than that in summer. So how do the farmers grow vegetables in winter
The glass traps the heat from the sun, making the air warm so that plants can grow better.
2.How does it work
trap…from…: keep sth in a place
The earth is becoming warmer
--- But does it matter
The structure of the text
a first paragraph that runs across the page and is in bold
the main text in two columns
two graphs/diagrams
two quotes
1.This article is from ________.
A. Environmental magazine
B. Biography
C. Science fiction
D. Book review
2. Who wrote it and what is the name of it
Global reading:
Glance and Answer!
The purpose of each part
Para 1 in bold To introduce the topic.
Graphs
Two quotes
Last para function as a conclusion

Glance and Answer!
To illustrate(阐述) points by providing evidence.
an introduction about the graphs
attract your attention and make you read them and even the whole passage
ask the reader to reflect on the major theme and to predict what might happen in the future
Skim the text:
Para. 1
Para. 2-5
I
II
Para. 6
III
Para. 7
IV
★
★
★
★
Introduction
Body
Conclusion
Match main ideas and work out how each part is developed
Explain how global warming comes about.
by…
List two different attitudes among scientists towards global warming.
by…
Introduce a debate over global warming.
by raising a question
It’s up to readers to think and decide whether people should do something about global warming or not.
by…
I
(1)
II (2-5)
III (6)
IV (7)
giving examples, using graphs, explanation
giving examples, making contrast (comparison)
using a question, leaving readers to think over the issue
What do all the scientists agree with
All scientists subscribe to the view that the increase in the earth’s temperature is due to the burning of fossil fuels to produce energy.
3. What are the names of the three scientists mentioned in the article What do they think about global warming
2. How does the Greenhouse Effect come into being
Please explain it in your own words.
Detailed Reading 2-6
Dr. Janice Foster and others George Hambley
Carbon dioxide has caused the global temperature to __________. An increase of five degrees would be a ___________ like ______________. More carbon dioxide is a __________ thing,
which makes crops __________ and will encourage ____________________.
go up
catastrophe
the rise of sea level, storms,
floods, droughts, famines,
the spread of diseases
and the disappearance
positive
produce
a greater range of animals
be opposed to
Debate:
We should do nothing about global warming.
Group A
3 Ss
agree
reasons
Group B
3Ss
disagree
reasons
Debate
Debate
We should do nothing about global warming.
We should do something about global warming.
Group A :
Group B :
PK
Agreement & Disagreement
Exactly.
All right.
That’s right.
That’s a good idea.
I think so.
I couldn’t agree more.
That’s exactly my opinion.
I don’t think so.
I’m afraid not.
I’m afraid I disagree with you.
I’m afraid I have a different opinion..
I think you are absolutely wrong.
suggestions
carry out
To reduce carbon dioxide
and save energy
Turn electrical appliances off when not using them.
Put on more clothes, don’t turn up the heat.
Walk or ride a bike, don’t drive.
Recycle cans, bottles, plastic bags and newspapers.
Buy things made from recycled materials.
Buy products that use less energy.
Plant trees.
Raise awareness of saving energy.
Nature, to be commanded, must be obeyed. 预驾驭自然必先顺之。
Green mountains and clear water are equal to mountains of gold and silver. 绿水青山就是金山银山。
Man is to the ecological environment what man is to his eyes. 要像保护眼睛一样保护生态环境。
Homework:
1. Reorganize your ideas about the debate and write it down to form a composition to state your opinion.
2. Underline all the “it”in the passage and summarize its usage.