Words study Global warming Unit 4 莆田四中 陈静

① What are they? ② What are these buildings made of? ③ What’s the use? greenhouse / glass A greenhouse is used for_____________, especially during ____ weather. Turn to Pre-reading 1, Page 25. Read & answer. growing plants cold

_____ the heat from the sun keeps it from _________ ____ the air up How does a greenhouse work? trap…from…: keep sth in a place 存住来自 … 的 … traps escaping heats

In the atmosphere surrounding the earth there are gases, which are called “greenhouse gases”. methane water vapor carbon dioxide

carbon dioxide Fossil Fuel( 矿物燃料 ) coal oil gas global warming ● ● ● ● ● ●● ● ● ● ● ● produce

What do you think greenhouse gases do? Greenhouse gases _____ the heat of the sun and therefore ______ the earth. It is known as __________________. Nowadays our earth is becoming _____________________. greenhouse effect trap warm warmer and warmer

Discussion This is a magazine article. How the text is organized? A title A first paragraph that runs across the page and is in bold ( 粗体，黑体 ) The main text is in two columns Writing styles : narrative writing ; argumentative writing ; expository writing ; practical writing expository writing

What is mainly discussed in the passage? A. What has caused the global warming and whether it matters. B. What effects of the global warming will be. C. How serious the global warming could be. D. What the global warming is. What is mainly discussed in the passage? A. What has caused the global warming and whether it matters. B. What effects of the global warming will be. C. How serious the global warming could be. D. What the global warming is. Skimming Reading tips — skim the title and Para 1: Title: THE EARTH IS BECOMING WARMER – BUT DOES IT MATTER? Para 1: … how has this come about and does it matter? ★★

Part 1. Part 2 Part 3 Part4 Para 1 Para(2-5) Para7 Scanning Para6 A.List two different attitudes among scientists towards global warming. B.Introduce the issue of global warming. C.Illustrate how global warming comes about. D.It's up to readers to think and decide whether people should do something about global warming or not.

Para 3 1.How do human affect the earth warming up? Human burn fossil fuels like coal, natural gas and oil to produce energy. 2. What is greenhouse gases? The byproducts of the process of producing energy, the most important one is carbon Dioxide. Careful Reading

Para 4. the levels of carbon dioxide have increased greatly over the last 100 to 150 years 1.Who made accurate measurements of the amount of carbon dioxide? 2. How much? Para 5. How high will the temperature go?

Tip: You can know somebody’s opinion through understanding his or what he said. What do Dr. Janice Foster and the scientist George Hambley think about the results of global warming? Do they agree with one another? quotations( 引言 ) quotations( 引言 ) Para 6

Dr. Janice Foster thinks the effects of global warming could be very serious. George Hambley thinks global warming will be mild with few bad environmental consequences. They don't agree with each other. Para 6

Does global warming matter? Positive effects Negative effects

1.cause the sea level to rise 2.severe storms 3.floods 4.droughts 5.famines 6.the spread of diseases 7.disappearance of species Positive effects Negative effects

1.cause the sea level to rise 2.severe storms 3.floods 4.droughts 5.famines 6.the spread of diseases 7.disappearance of species Positive effects Negative effects 1.make plants grow quicker 2.crops will produce more 3.a greater range of animals 4.make life better

Divided partWriting techniques ( Paragraph 1 ) Raising a question Expository Writing

Divided PartWriting Techniques (Paragraphs 2-5 ) Giving examples, using graphs, explanation, quoting, using numbers.

(Paragraphs 6 ) Giving examples, making contrast, quoting.

(Paragraph 7 ) Using a question To leave readers to think over the issue

Idea-sharing What should we do in face of global warming? I think … In my opinion… As far as I am concerned It is necessary …

Assignment  Write a short passage about the solutions to global warming.  Prepare the language points of this passage and underline the important ones.  After remembering the vocabulary, do the exercises on Page 28.

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Writing techniques  Giving examples  Explanation  Making contrast  Raising a question  using graphs  Quoting  Using numbers