Unit 1 Nature in the balance Reading 课件(共16张PPT)-译林版(2019)必修第三册

(共16张PPT)
Unit 1 Reading
The Amazon rainforest:
a natural treasure
Guessing
game
The“lungs of the planet”
South America
Amazon River
Do you know where it is
Guess a place.
The Amazon rainforest
Lead in
The documentary script below describes the Amazon rainforest.
Pre-reading
What do you think this script is about
A. The rainforest’s value to the human race and threats to the rainforest.
B. Plant biodiversity; levels of the rainforest
C. Basic information about the rainforest
D. Introduction to the Amazon rainforest
E. Animal biodiversity; food chain
Fast reading
Para. 1
Para. 2
Para. 3
Para. 4
Para. 5
Read the passage quickly and match the main idea of each paragraph.
Read Para. 1 carefully and answer the question below.
What is the status of the Amazon rainforst
A. It is the largest rainforest in the world.
B. It is the largest wetland in the world.
C. It is a small rainforest in South America.
D. It is a common forest in Africa.
Detailed Reading
Read Para. 2 carefully and fill in the blanks below.
Location
Size
Origin
With an area of
It is named after
.
Detailed Reading
the South American continent
the Amazon River
around 6 million square kilometres of forest
The Amazon rainforest lies on
.
Read para. 3 carefully and fill in the mindmap about forest’s different levels
a system of roots
the mass of leaf litter
shorter plants with large leaves
towering ancient hardwoods
the tops of the tallest trees
There are _______ levels of plant species.
5
Read Para. 4 carefully and complete the following chart about the food chain in the rainforest.
At least 87 species, including frogs
Detailed Reading
break down
feed on
feed on
feed on
Jaguars
Insects
Leaves and fruit
Microorganisms
Read Para. 5 carefully and answer the following questions.
1. What is the function of the rainforest to us
Detailed Reading
2. What is the major danger in the Amazon rainforest
Read Para. 5 carefully and answer the following questions.
1. What is the function of the rainforest to us
The Amazon forest breathes life into the planet by fixing carbon and producing over 20 percent
of all the Earth’s oxygen. Thus, it is known as the “lungs of the planet”. Moreover, the Amazon forest is a treasure house of species that can be used for food or medicine.
Detailed Reading
Read Para. 5 carefully and answer the following questions.
Detailed Reading
2. What is the major danger in the Amazon rainforest
Yet there is one major danger to these irreplaceable plants and animals: us.
Yet there is one major danger to these irreplaceable plants and animals: us.
Discussion
Post reading
What can we do to protect the rainforest
What can we do to protect the rainforest
Plant more trees
Adopt a low-carbon life
Enhance the law
Use less paper
Don't use one-off things
...
Basic information about the rainforest
Plants
Birds and mammals
Value and threats
Post reading
The Amazon rainforest:
a natural treasure
It is not the Earth that needs us, but we who need the Earth.
Homework
1. Read the passage again and circle the unfamiliar words and sentences.
2. Introduce places in China with rich biodiversity like the Amazon rainforest.