人教版选择性必修第一册 Unit5 Working the Land Usingl anguage课件(15张ppt)
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| 名称 | 人教版选择性必修第一册 Unit5 Working the Land Usingl anguage课件(15张ppt) |  | |
| 格式 | zip | ||
| 文件大小 | 9.1MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2021-12-16 21:42:43 | ||
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内容文字预览
(共15张PPT)
Using language
Chemical Farming VS Organic Farming
It is fertilizer.
What is the substance we put on the soil to make
crops grow
Lead-in
A
Chemical fertilizers
What kind of fertilizers do farmers use
B
Natural /Organic fertilizers
Natural waste from animals and dead plants
What kind of fertilizers do farmers use
organic farming
chemical farming
organic farming
organic farming
chemical farming
organic farming
Make a judgement: which is chemical farming and which is organic farming.
Skimming
What type of writing is this passage
A. Description B. Expository
C. Argumentation D. Narration
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
(Para.1-2)
chemical farming
Advantages Disadvantages
1. 2. harming the land:
killing harmful __________________ as well as _________________
harming people’s health:
These chemicals may make people _____and even _______________
Crops grow too fast to be ___________________.
bacteria and insects
the helpful ones
ill
rich in nutrition
cause cancer
fight crop disease
increase production
Scanning
Organic farming is simply farming ______________________________ .
Organic farmers focus on_____________________________________________________
(Para.3)
without using any chemicals
keeping their soil rich and free of disease through natural means.
What is organic farming
Para 4
Organic farmers also use many other methods to produce rich soil. They often change the kind of crop grown in each field every year. For instance, they may grow corn or wheat in a field one year, and then grow beans there the next. Why different crops are grown is because they put important minerals back into the ground, making it ready again for the next batch of crops. Organic farmers also plant diverse crops that use different depths of soil to help keep it rich. For example, peanuts grow on the ground's surface, but many other vegetables put down deep roots. The goal of using different organic farming methods is to grow good food while avoiding damage to the environment or to people's health.
Organic farmers also use many other methods to produce rich soil. They often change the kind of crop grown in each field every year. For instance, they may grow corn or wheat in a field one year, and then grow beans there the next. Why different crops are grown is because they put important minerals back into the ground, making it ready again for the next batch of crops. Organic farmers also plant diverse crops that use different depths of soil to help keep it rich. For example, peanuts grow on the ground's surface, but many other vegetables put down deep roots. The goal of using different organic farming methods is to grow good food while avoiding damage to the environment or to people's health.
What are the organic methods mentioned in Para3&4 ？
What are the organic methods mentioned in Para3&4？
3. plant diverse crops that use different depth of soil .
1.Use.........
1. Use natural waste from animals as fertilizer.
2. change the kind of crop grown in each field every year.
2.Change.........
3.Plant.........
to make the soil in the fields richer in minerals
What are purposes of these methods
to put important minerals back into the ground
to keep the soil rich
What's the goal of using different organic farming methods （Para.4）
The goal of using different organic farming methods is to grow good food while avoiding damage to the environment or to people's health.
Why can’t we stop the use of man-made chemicals in agriculture entirely
A. Organic farming cost us a lot of money.
B. Organic farming can meet people’s need.
C. Chemical farming brought us huge profit.
D. Chemical farming helps serve the need for food.
(Para.5)
Benefits — Problems — Solutions
Farming Benefit Problem Solution
Chemical farming
Organic farming
fight crop disease and increase production
sometimes harm both the land and people’s health
switch to organic farming
make the soil rich; keep the air, soil, water and crops free of chemicals
cannot meet the need
still a long way to find a suitable solution
Fill in the table according to the passage
Thinking
To make the passage more coherent, we'd better use some transitions between ideas. Find some in Para.2 and name their functions.
Transition words Function
For example,… Illustrating
…, but also… Adding more information and emphasising
In addition,… Adding more information
In turn,… Sequencing
In fact,… Illustrating / Emphasising
As for… Introducing a new topic / thing
…, but… Contrasting
…, and… as well Adding more information
Using language
Chemical Farming VS Organic Farming
It is fertilizer.
What is the substance we put on the soil to make
crops grow
Lead-in
A
Chemical fertilizers
What kind of fertilizers do farmers use
B
Natural /Organic fertilizers
Natural waste from animals and dead plants
What kind of fertilizers do farmers use
organic farming
chemical farming
organic farming
organic farming
chemical farming
organic farming
Make a judgement: which is chemical farming and which is organic farming.
Skimming
What type of writing is this passage
A. Description B. Expository
C. Argumentation D. Narration
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
(Para.1-2)
chemical farming
Advantages Disadvantages
1. 2. harming the land:
killing harmful __________________ as well as _________________
harming people’s health:
These chemicals may make people _____and even _______________
Crops grow too fast to be ___________________.
bacteria and insects
the helpful ones
ill
rich in nutrition
cause cancer
fight crop disease
increase production
Scanning
Organic farming is simply farming ______________________________ .
Organic farmers focus on_____________________________________________________
(Para.3)
without using any chemicals
keeping their soil rich and free of disease through natural means.
What is organic farming
Para 4
Organic farmers also use many other methods to produce rich soil. They often change the kind of crop grown in each field every year. For instance, they may grow corn or wheat in a field one year, and then grow beans there the next. Why different crops are grown is because they put important minerals back into the ground, making it ready again for the next batch of crops. Organic farmers also plant diverse crops that use different depths of soil to help keep it rich. For example, peanuts grow on the ground's surface, but many other vegetables put down deep roots. The goal of using different organic farming methods is to grow good food while avoiding damage to the environment or to people's health.
Organic farmers also use many other methods to produce rich soil. They often change the kind of crop grown in each field every year. For instance, they may grow corn or wheat in a field one year, and then grow beans there the next. Why different crops are grown is because they put important minerals back into the ground, making it ready again for the next batch of crops. Organic farmers also plant diverse crops that use different depths of soil to help keep it rich. For example, peanuts grow on the ground's surface, but many other vegetables put down deep roots. The goal of using different organic farming methods is to grow good food while avoiding damage to the environment or to people's health.
What are the organic methods mentioned in Para3&4 ？
What are the organic methods mentioned in Para3&4？
3. plant diverse crops that use different depth of soil .
1.Use.........
1. Use natural waste from animals as fertilizer.
2. change the kind of crop grown in each field every year.
2.Change.........
3.Plant.........
to make the soil in the fields richer in minerals
What are purposes of these methods
to put important minerals back into the ground
to keep the soil rich
What's the goal of using different organic farming methods （Para.4）
The goal of using different organic farming methods is to grow good food while avoiding damage to the environment or to people's health.
Why can’t we stop the use of man-made chemicals in agriculture entirely
A. Organic farming cost us a lot of money.
B. Organic farming can meet people’s need.
C. Chemical farming brought us huge profit.
D. Chemical farming helps serve the need for food.
(Para.5)
Benefits — Problems — Solutions
Farming Benefit Problem Solution
Chemical farming
Organic farming
fight crop disease and increase production
sometimes harm both the land and people’s health
switch to organic farming
make the soil rich; keep the air, soil, water and crops free of chemicals
cannot meet the need
still a long way to find a suitable solution
Fill in the table according to the passage
Thinking
To make the passage more coherent, we'd better use some transitions between ideas. Find some in Para.2 and name their functions.
Transition words Function
For example,… Illustrating
…, but also… Adding more information and emphasising
In addition,… Adding more information
In turn,… Sequencing
In fact,… Illustrating / Emphasising
As for… Introducing a new topic / thing
…, but… Contrasting
…, and… as well Adding more information