人教版（2019）选择性必修 第一册Unit 5 Working the Land Using language 课件(共17张PPT)

(共17张PPT)
Unit 5
reading for writing
What can we put on the soil to make it grow
chemical
organic
________
fertilizers
________
fertilizers
fertilizers
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CHEMICAL VERSUS ORGANIC FARMING
vs.
Which one is better Which one do you support
化学农业
有机农业
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chemical farming
organic farming
supporting reasons (details)
supporting reasons (details)
vs.
Argument (论点)
topic
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A.
C.
B.
Part 1 (para 1&2)
The _______________ and _______________ of chemical farming.
Part 2 (para 3&4)
What organic farming is and how it keep the _______ rich.
Part 3 (para 5) conclusion
Skim the text and choose its structure.
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benefits
problems
soil
P1
P2
P3
P4
P5
argument
supporting detail 1
supporting detail 2
supporting detail 3
supporting detail 4
supporting details
Find out the argument and the supporting details.
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How did the author connect these supporting details together logically
different conjunctions （连接词）
for example
not only…but also
in addition
in fact
as for
but
as well
…
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benefits
1. fight_____________
2. increase__________
chemical farming
problems
Harm both the land and people’s health.
Para 1 the benefits and problems of chemical farming
How
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crop disease
production
spraying pesticides on crops
affects
the crops
damage to _______ and ________
bacteria & insects
harmful
helpful
make ill
cause cancer
prohibited
stay in the _____ and ______________________ sources for a long time
Para 2 supporting details
How did farmers solve the problems
As an alternative, they…
Haha, we've switched to organic farming.
underground water
soil
the environment
people
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Part 2 (para 3&4) What organic farming is and how it keep the soil rich.
supporting details
Can you think of the problem of organic farming Did the author mention it
Benefit: keep the soil rich and free of disease.
Problem: can’t meet the high demand.
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近年来，媒体对“农业可持续发展” “食品安全”等问题作了一些报道，引发了许多讨论，到底哪种农业种植方式有利于农业可持续发展并解决食品安全问题呢？假设某英语报记者对你进行采访，征求对此现象的看法，请用英语写一篇议论文，表达自己的观点，并说明理由。
chemical
farming
organic
farming
benefits
problems
fight crop disease
increase production
lower cost
crops look beautiful outside
......
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
......
summary and brainstorming
5 yuan / kg
30 yuan / kg
Normal tomatoes
Organic tomatoes
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10分
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Brainstorm
What’s your argument
In my opinion / in my view / in my eyes / as far as I am concerned, organic farming is preferable to chemical farming, because it’s beneficial to both people’s health and the environment, and favorable to sustainable development of agriculture.
In my opinion, I agree/am for/be in favor of chemical farming, because it can fight crop decease and increase production, thus serving the high demand for the food around the world.
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Finish the draft
____________________________
In my eyes, organic farming is preferrable to chemical farming, because it’s favorable to sustainable development of agriculture, beneficial to both people’s health and the environment and provide more nutritious food.
___________, chemical farming _______________________. Chemical pesticides kill both harmful and helpful ones, damaging the food chain, ecological balance and thus the environment. ____________, they tend to be hard to get rid of and accumulate in the soil and groundwater, which poison and pollute the soil, water, organism and microorganism.
Make your waste no longer waste
To start with
harms the environment
What’s more
_____________, the polluted water, plants and animals _____________________ as well. Though it may be true that the food we eat doesn’t have enough pesticide in it to kill us immediately, over the years, this pesticide may __________________________________________.
In addition, the use of chemical fertilizers make the food look bright. _________, the food tastes _______________________________________. Besides, it is less __________ in minerals.
Finish the draft
What’s worse
damage people’s health
lead to health problems and even cause cancer
However
less delicious than that grown with chemicals
nutritious
Finish the draft
______________, organic farming benefits the sustainable development of agriculture, people’s health and the environment by using natural means. For example, organic farmers use ___________________ as fertilizers, and adopt other ways to keep the soil rich, which can provide good-quality food as well as protect the ecological balance. In addition, its higher price can bring about _____________ of famers.
In conclusion, ___________________ that organic farming is favorable. Though the price of organic food is higher because of its higher cost and greater required effort, it can bring us great rewards in the end.
By comparison
natural animal wastes
higher income
I’m fully convinced
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Polish your essay, and hand in it.