Unit4 Unit4 Global Global

warmingwarming

large population energy crisis 能源危机

bird flu

What effects may the events have on the Earth?

What other problems is the earth facing now ?

Global warming

ReadingReading

The earth is becoming warmer— but does it matter?

1. Where is the article from? Who wrote it? It is from a magazine called Earth Care. Sophie Armstrong wrote it.

2. Find out the topic sentence of the passage. So how has this come about and does it matter? 3.The purpose of the first paragraph is to ______. A. introduce the writer B. explain a change C. introduce the topic D. raise a question

Divide the rest of the passage into 2 parts:

How has this come about(happened)?

Does it matter?

Para_____

Para_____

2—5

6—7

the c_____ of global warming

different ________ about global warming

opinions

cause

It is that is to blame for the global warming.

The burning of

human activity

_______

fossil fuels

________ ______

energy

greenhouse gases

____ heat from the sun and _____ the earthtrap warm

more heat tends to be ______

The global temperature ____ ____

trapped

goes up

huge quantities of extra CO2

functiongreenhouse________effectIt is a __________ phenomenonnatural

a lot of / plenty of

1.what causes global warming ?

2.What is “greenhouse effect?”

3. What is global warming?

global warming

Cause Para (2-5)

Datas showing the earth is becoming warmer

Graph1:________________________________

Graph2:________________________________

the temperature rose about 1 degree Fahrenheit from 1860 to 2000

the carbon dioxide content in the atmosphere went up a lot from 1957to 1997

Over the next 100 years, it will go up as low as_________degrees or as high as_____ degrees.1 to 1.5 5

Providing evidence

A writing tip: give the supporting points and details to the writing statement.

Dr. Janice Foster George Hambley

Carbon dioxide has caused the global temperature to __________. An increase of five degrees would be a ____________ and could be ______________.

More carbon dioxide is a __________ thing,which makes crops __________ more and will encourage ____________________.

go up

catastrophe

very serious

positive

produce

a greater range of animals

George Hambley is to Dr.Janice Foster’s opinion

opposed

the n effect will be terrible

global warming will do ____ to the earth

good

a big disaster

disagree with

negative

Opinions Para (6-7)

T or F1.Global warming can be stopped immediately if we take some measures.

2. It is clear what the effects of the global warming will be.

F

FNo one knows ?

3.The author probably agrees that ________A. actually global warming is good for man.B. we should do nothing about the global warming.C. catastrophes will happen if the globe keeps on warming.D. a lot remains to be found out about the effects of global warming.

D 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓

〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓

Of the two scientists’ opinions, which are you in favor of ?

Why ?

支持 be for / subscribe to （ to 介词） / agree with……….

反对 be against/ be opposed to （ to 介词） / object to （ to 介词） ……..

Phrases for reference:

What can we do to deal with global warming?

.

.

Try to reduce the use of motor vehicles

electric vehicle

bike running

Try to reduce the use of motor vehiclesTo reduce carbon dioxide and protect the globe

litter classification

planting trees

Solar energy car

Can you find more suggestions about reducing the amount of carbon dioxide and saving energy in our daily life?

to Earth Care

ending

……

……

……

……

……

A letter to Earth Care

Dear Earth Care, I’m writing to share my good suggestions on how to reduce carbon dioxide and save energy in our daily life. I am sure every one can make a difference.

suggestions

Yours……..

Just do it.

Your contributions count!

Make it a better place

Homework

Finish the letter to EarthCare.

Read the passage again and review the new words and expressions.