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. 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

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

Why does the globe become warmer? How does it come about? What effects will the global warming bring?

Fast Reading 1. Who wrote the magazine article? The name of the magazine? 2. What are the names of the three scientists mentioned in the article? 3. What is mainly discussed in the passage?

Skimming ★★ 1.Who wrote the magazine article? The name of the magazine? 2. What are the names of the three scientists mentioned in the article? 1. Who wrote the magazine article? The name of the magazine? 2. What are the names of the three scientists mentioned in the article? Sophie Armstrong. Earth Care. Dr Janice Foster, Charles Keeling, George Hambley. Reading tips: In English, some nouns begin with a capital letter( 大写字母 ), such as names of people and places, titles( 标题 ) of magazines, newspapers, stories and books, people’s titles( 头衔 ), etc..

3.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? ★★★

1. How many degrees did the temperature of the earth rise during the 20th century? 2. Why do we say it is a rapid increase? It is a rapid increase compared to other natural changes. Para.1 Introduce a debate over the issue of global warming Main idea: How has global warming come about and does it matter?

Part 2 (para2-3) 1. What is the first graph about? 3. What is the “greenhouse effect”? Main idea(part2): How global warming comes about. 2. How has global warming come about ?

Graph 1: it shows the _________ increase of one _______ Fahrenheit between ______________. temperature degree 1860 and What is the first graph about?

Part 2 (para2-3) 2. How has global warming come about ? a. Human activity-----burning of fossil fuels. b. Greenhouse effect---greenhouse gases--- we need those gases c. Huge quantities of extra carbon dioxide are added to the atmosphere It is human activity that has caused this global warming rather than a random but natural phenomenon. the burning of fossil fuels All scientists subscribe to the view that the increase in the earth’s temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy.

Part 2 (para2-3) 3. What is the “greenhouse effect”? There is a natural __________ that scientists call the “greenhouse effect”. This is when small _______ of gases in the atmosphere, like ____ ______, _______ and ____ ______, trap heat from the sun and therefore ______ the earth. Without the “greenhouse effect”, the earth would be about _______________________ cooler than it is. So we need those gases. The problem begins when we ____ huge _______ ___ extra carbon dioxide into the atmosphere. It means that more heat energy ____ __ be trapped in the atmosphere causing the global temperature to ____ ___. phenomenon amounts carbon dioxidemethane water vapour warm thirty-three degrees Celsius addquantities of tends to go up

Para 4 1.What is the second graph about? carbon dioxide contentwent up per it shows the ______ _____ ______ in the atmosphere _____ ___ from 315 parts to 370 parts ____ million from 1957 to Graph 2: Charles Keeling What do all the scientists think of the graph?

Para What are the names of the two scientists mentioned in these two paragraphs? 2.What do they think about global warming? Do they agree with one another? They are Dr. Janice Foster and George Hambley. Some think the effects will be terrible, while some others believe that we should not worry about it. Dr.Janice Foster thinks the effects of global warming could be very________. George Hambley thinks global warming will be ____ with few bad _________ ___________. serious mildenvironmentalconsequences Main idea : Two different attitudes among scientists towards global warming.

The different ideas between Dr. Janice Foster & George Hambley Dr. Janice Foster (bad effects of global warming) George Hambley (good effects of global warming) 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

What are the effects of global warming? ④ Encourage a greater range of animals. ① The sea level to rise. ② Severe storms, droughts, famines, the spread of diseases, and disappearance of species. ③ Make plants grow faster. Crops will produce more. ﹛ bad ﹛ good

Greenhouse gases continue to ____ ____ in the atmosphere. Even if we start reducing the amount of Co 2 and other ____________ ____, the climate is going to _____ ____ warming, for_______ ( 几十年 ) or centuries. No one knows ______________________________. Does that mean we should do nothing? Or, are the ____ too great? build up greenhousegases decades what the effects of global warming will be risks keep on Para 6

In the last paragraph, 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. Comprehension:

Good bye1

在 20 世纪期间，地球温度大约升了华氏一度。这是怎 么产生的呢？ 事实上，正是人类活动导致了这个问题，而不是一种随 意的自然现象。科学家都认同一个观点，地球温度的升高 是因为人们为了生产能量而燃烧化石燃料。 温室效应是一种自然现象。大气层中的少量气体吸收太 阳的热量而使地球变暖。我们需要这些气体，但是当我们 排放过多的二氧化碳到大气中的时候，问题就出现了。 对于大气中二氧化碳的含量增长的问题，科学家们持有 不同的观点。有些人认为，这将会是一场灾难。全球变暖 可能会导致海平面上升几米，还会出现严重的风暴，干旱， 饥荒，疫病和物种灭绝等。有些人认为二氧化碳含量的增 加是件好事，它能够改善人类的生活。 事实上，没有人知道全球变暖会带来什么影响。无论如 何，我们应该采取些措施。

在 20 世纪期间，地球温度大约升了华氏一度。这 是怎么产生的呢？ During the 20th century, the temperature of the earth rose about one degree Fahrenheit. How has this come about? 事实上，正是人类活动导致了这个问题，而不是 一种随意的自然现象。 In fact, it is human activity that has caused this global warming rather than a random but natural phenomenon.

科学家都认同一个观点， ( 地球温度的升高是因为人们为 了生产能量而燃烧化石燃料 ) 。 ( 同位语从句 ) 温室效应是一种自然现象。大气层中的少量气体吸收太 阳的热量而使地球变暖。 All scientists subscribe to the view (that the increase of the earth’s temperature is due to the burning of fossil fuels to produce energy). Greenhouse effect is a natural phenomenon. Small amounts of gases in the atmosphere trap heat from the sun and therefore warm the earth.

我们需要这些气体，但是当我们排放过多的二氧化碳到 大气中的时候，问题就出现了。 We need these gases, but problems begin when we add huge quantities of extra carbon dioxide into the atmosphere. When we add too much carbon dioxide into the atmosphere. When too much carbon dioxide is added into the atmosphere.

对于大气中二氧化碳的含量增长的问题，科学家们持有 不同的观点。 Scientists hold different attitudes to the fact (that carbon dioxide content in the atmosphere is going up). ( 同位语从句 ) The amount of carbon dioxide in the atmosphere is increasing/going up/rising, and the attitudes of scientists to this rise are different.,and scientists hold different attitudes to this rise., to which scientists hold different attitudes.

有些人认为，这将会是一场灾难。全球变暖可能会导致 海平面上升几米，还会出现严重的风暴，干旱，饥荒，疫 病和物种灭绝等。 Some people think that it will be a catastrophe. Global warming may result in a rise of several meters in the sea level. And there might be severe storms, droughts, famines, the spread of diseases, the disappearance of species and so on. 有些人认为二氧化碳含量的增加是件好事，它能够改善人 类的生活。 Others think that more carbon dioxide is actually a positive thing, which will make life better.

事实上，没有人知道全球变暖会带来什么影响。无论如 何，我们应该采取些措施。 Actually/In fact/As a matter of fact, no one knows the effects of global warming. Anyway, we should do something/we should take some measures.

During the 20th century, the temperature of the earth rose about one degree Fahrenheit. How has this come about? In fact, it is human activity that has caused this global warming rather than a random but natural phenomenon. All scientists subscribe to the view (that the increase of the earth’s temperature is due to the burning of fossil fuels to produce energy). Greenhouse effect is a natural phenomenon. Small amounts of gases in the atmosphere trap heat from the sun and therefore warm the earth.

We need these gases, but problems begin when we add huge quantities of extra carbon dioxide into the atmosphere. Scientists hold different attitudes to the fact (that carbon dioxide content in the atmosphere is going up). Some people think that it will be a catastrophe. Global warming may result in a rise of several meters in the sea level. And there might be severe storms, droughts, famines, the spread of diseases, the disappearance of species and so on. Others think that more carbon dioxide is actually a positive thing, which will make life better.

As a matter of fact, no one knows the effects of global warming. Anyway, we should do something/we should take some measures.