B6U4 Global warming
Faced with global warming, what
should we do to reduce it?
1.Turn off the electrical appliances if we don’t use them.2. Put on more clothes instead of turning up the heat.3. Walk or ride a bike if you can.4. Buy things made from recycled materials or economical with energy5. Plant trees.6. Be an educator
Apart from global warming, what environmental problems do you think are serious?
Air pollution, water pollution, noise, acid rain, over deforestation, desertification and so on.
Find out the topic sentence of each paragraph
Para 1: first sentencePara 2: first sentencePara 3: first sentencePara 4: last sentence
Answer key for Exercise 2 (P67)
First
Paragraph Point of vi
ew
Litter is a
serious
environmental
problem
Second
Paragraph
First point of the argument;
Evidence
Cigarette butts are small but are still bad for the environment.
1. Over 1,600 billion cigarettes are smoked each year in China. Many of the butts become litter.
Second
Paragraph
2. 4.5 trillion butts are littered every year in the world.3. Butts spoil the beauty of the environment4. Butts contain toxic chemicals. These get into the water supply. These decrease the quality of the water and endanger living things.5. Butts take up to 5 years to break down, so the toxic chemicals add up to a great amount.
Third
Paragraph
Second point of the argument
Plastic bags are a danger to the environment.
Third
ParagraphEvidence
1.Plastic bags are made from non-renewable resources. If they are not recycled, these resources are lost to us.
2.In China, 2 billion plastic bags are used every day. Many of these become litter.
Third
Paragraph
3. Plastic bags last from 20 to 1000 years in the environment.4. They can travel long distances in the air and water. They are in rivers, parks, beaches and oceans. 5. Plastic bags kill up to one million seabirds, 100,000 sea mammals and countless fish each year worldwide.
Third
Paragraph6. After the animal breaks
down, the plastic bag
becomes free and can kill
another animal.
Fourth
Paragraph
Point of view
The environment would be less polluted if we cleaned up cigarette butts and plastic bags. The best solution would be not to smoke or use plastic bags at all.
Structure of an argumentation:Part 1: Point of viewPart 2: Evidence to support your viewPart 3: Point of view
Writing:结合以下内容，写一篇英语短文：1.垃圾问题是一个严重的环境问题。2.其中最严重的是白色污染。3.在日常生活中我们随处可见一次性餐具和塑料袋。 (disposal dishware)4.这些垃圾占据了空间并危害我们的健康。5.提出你的解决方法。
• Part 1: Put forward a problem
• Part2: Analyse the problem
• Part3: Solve the problem
