资源简介

(共19张PPT)
Reading for Writing
Chemical Versus Organic Farming
（表示两队）对; 与…相对/ 比较
It is fertilizer.
What is the substance we put on the soil to make
crops grow
Pre-reading
What kind of fertilizers do farmers use
chemical fertilizers
organic fertilizers
A. What organic farming is
B. Why man-made chemical are still used in farming
C. Organic methods for producing rich soil
D. The problems with chemical farming
Para. 1-2
Para. 3
Para. 4
Para. 5
Read the text and then Match the main idea with each paragraph.
Chemical farming
Organic
farming
Thinking
1. Why did many farmers welcome the introduction of chemical farming (Para1)
2. What concerns many people about the use of pesticides (Para1)
3. What is one problem with the use of chemical fertilisers (Para2)
4. How is organic farming different from chemical farming (Para3)
5. Why do organic farmers change the kind of crop grown in a field every year (Para4)
6. What's the goal of using organic farming methods （Para4）
Read for information
Chemical farming
Para1-2
1. Why did many farmers welcome the introduction of chemical farming (Para1)
Advantages:
Many farmers welcomed them as a great way to fight crop disease and increase production.
2. What concerns many people about the use of pesticides (Para1)
Disadvantages:
Their long-term use can sometimes harm both the land and people’s health.
3. What is one problem with the use of chemical fertilisers (Para2)
Disadvantages:
Crops grown with them usually grow too fast to be rich in nutrition.
Organic farming
Para3-4
4. How is organic farming different from chemical farming (Para3)
Organic farming is simply farming without using any chemicals.
Organic farmers focus on keeping their soil rich and free of disease through natural means.
5. Why do organic farmers change the kind of crop grown in a field every year
Different crops are grown because they put important minerals back into the ground, making it ready for next batch of crops.
6. What's the goal of using organic farming methods （Para4）
Advantages:
The goal of using different organic farming methods is to grow good food while avoiding damage to the environment or to people's health.
Para1:
however
Para2:
for example, in addition, in turn, in fact, as for, but, and, as well
Read for transitional words & phrases
Para3:
as an alternative, for example, also
Para4:
also, for instance, for example, but
Para5:
therefore
argumentative writing
chemical
farming
Thinking
organic
farming
advantages
disadvantages
fight crop disease
increase production
lower cost
crops look beautiful outside
......
good food
avoiding damage to the environment or to people's health
......
harm the land
harm people’s health
harm the environment
crops are less in nutrition
......
cannot meet the demand for food
more efforts and higher cost
smelly gases
......
如何写表达
观点的文章
Writing
发表议论就是通过议论或说理来表达作者的见解和主张，作者对某一问题持有一种看法，为了使读者同意自己的看法，提出若干理由，试图说服别人。
发表议论时，我们要注意三个要素：论点、论据、
论证。
Write an argumentative essay giving your opinion
on chemical or organic farming.
该类文章一般分为三部分：
第一部分：开门见山，说明自己的看法或观点；
第二部分：列举支持方的观点及其理由；或列举反对方的观点及其理由；
第三部分：得出结论或给出自己的观点。
书面表达
假定你是李华，最近，你班开展了主题为“Chemical Farming or Organic Farming”的征文活动。请根据以下内容用英语写一篇短文。
1. 你的观点；
2. 做出该选择的理由。

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