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1、Unit 3Oxford EnglishModule 2 Environmental problemsPeriod 1Getting readyGetting readyReading (I)Reading (I)Getting ready1Look at the cartoon and answer the questions. What has Lo done? What has Lo done? What did Hi tell Lo to do?What did Hi tell Lo to do? Does Lo understand what Hi meant? Does Lo un
2、derstand what Hi meant? What did Hi mean when he told Lo to be What did Hi mean when he told Lo to be greengreener? er? What should a person What should a person do if he or she wants do if he or she wants to beto be greengreen? ? He has painted himself green.He has painted himself green.He told Lo
3、to be greener.He told Lo to be greener.No, he doesnt.No, he doesnt.He meant that Lo should care more about the environment.He meant that Lo should care more about the environment.2What do you know about ?atmosphereatmosphereWhat do you know about the greenhouse effect?A1 What do you know about the g
4、reenhouse effect? Match the first half of the sentences in column A with the second half in column B. Write the correct letters in the blanks.The gases cause the atmosphere to keep in too much heat The gases cause the atmosphere to keep in too much heat from the Sun.from the Sun.The Earth is getting
5、 warmer and warmer.The Earth is getting warmer and warmer.We call this the greenhouse effect. We call this the greenhouse effect. There is an atmosphere around the Earth. There is an atmosphere around the Earth. It controls the Earths temperature.It controls the Earths temperature.However, we are po
6、lluting the Earth with harmful gases. However, we are polluting the Earth with harmful gases. 123456Read the following sentences.Read the sentences in A1 and answer the questions.1 Whats around the Earth? 1 Whats around the Earth? 2 What are people polluting the Earth with? 2 What are people polluti
7、ng the Earth with? 3 What are the effects of the harmful gases? 3 What are the effects of the harmful gases? 4 What do we call this? 4 What do we call this? The atmosphere. The atmosphere.Harmful gases.Harmful gases. They cause the atmosphere to keep in too much heat from They cause the atmosphere t
8、o keep in too much heat from the Sun, and the Earth is becoming warmer and warmer.the Sun, and the Earth is becoming warmer and warmer.The greenhouse effect.The greenhouse effect.A2 What is the result of the greenhouse effect? In groups, discuss this with yourclassmates.3Before you readLook at the a
9、rticle on page 35 and choose the best answer.The article is probably from a(n) The article is probably from a(n) _._. a advertisement a advertisement b poster about the Earth Hour b poster about the Earth Hour c environmental science book c environmental science book d comic book d comic bookc cLook
10、 at the pictures, the title, the introduction and the sub-headings of the article on page 35. Then answer the questions below.1 What is the article mainly about?1 What is the article mainly about?2 What problems does the article 2 What problems does the article discuss?discuss?3 A 3 A consumerconsum
11、er is someone who buys and is someone who buys and uses things. Can you uses things. Can you guessguess what a what a “green consumer” is?“green consumer” is?Environmental problems.Environmental problems.The greenhouse effect, cutting down forests The greenhouse effect, cutting down forests and bad
12、habits.and bad habits.A “green consumer” is someone who only buys A “green consumer” is someone who only buys and uses things friendly to the environment.and uses things friendly to the environment.Think and answerWhat does a green consumer usually What does a green consumer usually do?do?The world
13、is The world is _. . Main problem 1: Main problem 1: _Main problem 2: Main problem 2: _Main problem 3: Main problem 3: _ _Solution: We Solution: We need to need to _ _ _._.Read the text and finish the chart.in dangerThe greenhouse effectThe greenhouse effectCutting down forestsBad habits take proper
14、 actionPart 1Part 1Part 2Part 2Part 3Part 3Part 4Part 4Match each picture with each part of the text.4While you read Why must people do something Why must people do something to protect the environment? to protect the environment? What are the main problems What are the main problems people face? pe
15、ople face? What should people do to What should people do to protect the environment? protect the environment? Read the text and answer the questions.Because our world is in danger.Because our world is in danger.The greenhouse effect, cutting The greenhouse effect, cutting down forests and bad habit
16、s. down forests and bad habits. People should become “green People should become “green consumers”.consumers”.5C1 The words in italics explain the meanings of some words on page 35. Find these words to complete the sentences. Change their forms if necessary.Vocabulary The world is in dangerOur world
17、 is in danger. We must do something to protect the environment. But, what are the main problems we face?The greenhouse effectThe atmosphere around the Earth is necessary for all living things. It is like the glass of a greenhouse, letting sunlight in and keeping heat from getting out. Without it, th
18、e Earth would be the same as the Mooncold and lifeless.When we burn fuels such as petrol and coal, we produce a gas called carbon dioxide (CO2). Too much of this gas pollutes the atmosphere, and causes it to keep in too much heat. As a result of the greenhouse effect, the Earths temperature is incre
19、asing. This causes sea level to rise, and in the future may cause cities to disappear.Cutting down forestsEvery year, we destroy nature by cutting down huge areas of forests. This makes the greenhouse effect worse because trees take in CO2 and produce oxygen. Cutting down trees also destroys the hom
20、es of the animals that live in our forests, and causes the surface of the soil to be easily destroyed by rain. This can result in floods and even more damage to the environment.6Read after the recording Bad habitsMany of our habits cause pollution. People often use things once and then throw them aw
21、ay, or leave them on the ground as litter. This creates mountains of rubbish and pollutes our land and seas. In order to protect the environment, we need to take proper action. We should be different from many consumers and become “green consumers”. This means that we should only buy and use product
22、s friendly to the environment. We should also recycle as many things as we can. We can reuse things forthe same purpose as before, or we can use them for new purposes. If we just learn to live in new and different ways, we can make a difference.HHomework 1. 模仿录音的语音、语调，朗读课文。2. 抄写单词和短语: atmosphere，temperature，consumer，guess，green，result，increase，sea level，surface，habit，proper；greenhouse effect，in danger，as a result of， mountains of，take action。. 根据课堂上完成的结构图简单描述目前地球面临的问题及其导致的严重后果。4. 完成练习册第41页Reading A的练习。
