牛津译林版（2019）必修 第三册Unit 1 Nature in the balance Reading 课件(共22张PPT)

(共22张PPT)
Unit 1 Reading 1
The Amazon rainforest: a natural treasure
What do you know about the Amazon rainforest
Brainstorming
Location
Species
Climate
Natural resources
The Amazon rainforest:
a natural treasure
What will be talked about judging from the title and the picture
Step 1 Pre-reading: Prediction
Step 2 First Reading (Main idea )
Para. 3: Para. 4:
______biodiversity; ______of the rainforest
Animal __________; food ______
The rainforest’s ______to the human race
and ________to the rainforest.
Para. 1: ___________ to the Amazon rainforest
Para. 2: _________________ about the rainforest
Para 5:
Plants
biodiversity
levels
chain
value
threats
Introduction
Basic information
A.
B.
C.
D.
√
Step 2 First Reading ( Structure )
Step 3. Close Reading ( Para.1-2)
Basic information about the Amazon rainforest
● Geographic position:
● Name:
● The significance of the Amazon rainforest and the Amazon river:
gets its name from the Amazon river
on the South American continent
give this area the richest biodiversity on the earth
Step 4. Close Reading ( Para.2)
8
6 million
6,400
40,000
1,300
400
20%
17%
Of the 390,000 plant species known to us, more than 40,000 can be found in the Amazon. This tall and ancient brazil nut tree produces nuts that we can eat; these water lilies are big enough to lie down on. The forest’s different levels support an unbelievable variety of wildlife. At the bottom, there is a system of roots beneath the ground. Above that is the mass of leaf litter on the dark forest floor. The next level is made up of shorter plants with large leaves. Then there are the towering ancient hardwoods, and finally the tops of the tallest trees many metres above the ground. Each level of the forest forms its own little world, home to different kinds of living things.
Close Reading ( Para.3)
The rainforest’s different levels.
a system of roots
Each level of the forest forms its own little world, home to different kinds of living things.
the tops of the
tallest trees
the mass of leaf litter
shorter plants with large leaves
towering ancient hardwoods
Para. 3 The rainforest’s different levels.
Function
More than 1,300 species of birds and over 400 species of mammals hide among the jungle’s plant life. This jaguar is one example. It has a yellowish-brown coat with black spots. While a significant number of jaguars survive here, they are only one element of this forest’s food chain. They feed on at least 87 species, including frogs. These frogs, in turn, feed on insects which eat leaves and fruit. When a jaguar dies, a tiny army of microorganisms helps break down its body and return the nutrients to the earth.
Close Reading ( Para.4)
The food chain.
Jaguars
Insects
At least 87 species, including frogs
Leaves and fruit
Microorganisms
feed on
break down
feed on
feed on
The food chain
nutrient
“Lungs of the planet”
a treasure house of species that can be used for food or medicine
Human activities—what threatsit faces
due to
Close Reading ( Para.5)
Value of the Amazon rainforest
Basic information
location and size
Name: getting its name from (1) ________________
richest (2) ____________
Amazon rainforest
Animals
more than 1,300 species of birds and over 400 species of (5) __________
elements of this forest’s (6) ___________
Plants
more than 40,000 (3) ______________
different (4) _____ of the forest
Significance
fix carbon and producing (7) ________
having species used for (8) __________________
Danger
the major danger: (9) _________________
disappearing due to human activities such as (10) ____________ and cattle farming
the Amazon river
biodiversity
plant species
levels
mammals
food chain
oxygen
food or medicine
us/human beings
agriculture
Step 5 Summary
1. Why is the Amazon rainforest a natural treasure
the largest rainforest in the world
maintaining the fine balance of the Earth’s ecosystem (Para.1)
giving this area the riches biodiversity on the Earth (Para.2)
known as the “lungs of the planet”
a treasure house of species that can be used for food and medicine
(Para.5)
Step 6 Further reading
2. What are the author’s writing purposes
To introduce the significance and value of the Amazon rainforest.
To appeal to the readers to take action to protect the Amazon rainforest.
What measures can be taken to protect the Amazon rainforest
Step 7 Discussion
First of all, laws should be made to severely punish whoever destroys the rainforest, and the deforestation of it should be combined with artificial afforestation. Secondly, the economic structure should be adjusted so that countries can get rid of the excessive dependence on it for economic development. Thirdly, environmental awareness education should be strengthened to make citizens realize the serious consequences of rainforest destruction and the significance of protecting the rainforest. The government should also take effective measures to prevent the forest fire from happening.
Post-reading
What If We Lost The Amazon Rainforest
Post-reading
watch the video and read the following table
Why to protect the Amazon forest Why is it endangered How to protect the Amazon forest in our daily life
creates 20% of the Earth’s oxygen; home to 30% of the planet’s species; holds the secrets to treating some of our most deadly diseases; store 86 billion tons of carbon that would otherwise be polluting our atmosphere ………….. massive forest fires; Human activities: farming/mining/logging don’t eat as much beef
(processed beef products)
reduce the amount of paper we use
choose renewable energy products whenever you can
Groupwork:
Discuss and write an article for the school newspaper calling for everyone to protect the Amazon forest
State the ______________ of the protection;
Explain what poses a _________ to the Amazon forest;
Come up with __________ to protect it;
importance
threat
ways
Presentation:
The Amazon forest is of great importance to us. ___________________________________________________________________________________________________________________________________________________________________________________________________________________________
Human activities as well as forest fires have done much harm to the Amazon forest. ___________________________________________________________________________________________________________________________________________________________________________________________________________________________
We must try to do whatever we can to protect it. __________________________________________________________________________________________________________________________________________________________________________________________________________________
Assessment
How well can you: Our group Your group
Punctuation
Spelling
Grammar
Choices of words
Style (formal/informal)
Structure
5=Excellent
4=Good
3=Satisfactory
2=Fair
1=Improvement
required
Thank you!