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(共18张PPT)
沪教版七年级上册
Focusing on culture
The Earth
Unit 4
Learning Objectives
掌握文本内容，梳理塞罕坝是如何从沙漠变成绿洲的，了解塞罕坝改造过程中遇到的困难和最终的成果。
02
通过塞罕坝成功治理环境问题的案例，思考人类该如何保护地球。
03
掌握关键词汇，如generation, disappear, cut down, blow away, sandstorm等。
01
重点
Let’s talk
What can we do to protect the Earth
We should plant more trees and turn deserts into green land.
We shouldn't litter, we need to sort our rubbish.
We shouldn't put waste into rivers and seas.
Let’s talk
Can you imagine a desert can turn into a forest
Look and say
Do you know where Saihanba is
It’s in Hebei province.
There is a picture of Saihanba.
Saihanba
What do you know about it
Look and say
Saihanba
Saihanba, from a tree to a million mu of forest, from desert to oasis(绿洲), is a miracle created by the Chinese people. Since 1961, after half a century of hard work, Saihanba has been built into a famous man-made forest area, attracting many tourists to come for sightseeing, and has become an important window to show China’s ecological civilization(生态文明).
Read and predict
The passage is mainly about how people turn Saihanba from a
into a .
desert
forest
Read and choose
What is the TEXT TYPE of this passage？
A. Argumentation(议论文)
B. Narration(记叙文)
C. Exposition(说明文)
C
Read and match
Para. 1
Para. 2
Para. 3
Read through the passage quickly and match each paragraph with its main idea.
Actions and challenges
Efforts and achievements
History and problems
Read and fill
Scan the text and fill in the missing information. Pay attention to the time and events.
scientists tried to find a
it is again
work hard
in the 1800s
in 1962
in the early 1960s
For hundreds of years
now
emperors hunted there
the first _______ ________ arrived
slowly turned into ________
three
emperors
a desert
green
tree
planters
solution
generations
the world’s biggest man-made forest
Read and answer
How did Saihanba become a desert
2. Why was it difficult to turn the desert into a forest
3. How does the forest improve the environment in the Beijing area
There were forest fires and wars, and people cut down many trees. Saihanba slowly turned into a desert.
The cold and dry weather made their work very difficult and strong winds blew away many young trees.
The forest helps provide the capital with clean water, and
there are fewer sandstorms in the Beijing area now.
Read and learn
In 2007, the government listed Saihanba as one of the most important national nature reserves in China. In 2017, the Saihanba Afforestation Community received the Champions of the Earth award from the UN Environment Programme.
Notes
Watch and learn
Watch a video clip about Saihanba and learn more about it.
Discuss and share
Q1: Why are forests important
Forests are very important because they provide us with clean air and water. They help to clean the air by taking in carbon dioxide and giving out oxygen. Also, forests are home to many animals and plants, so they help to keep our planet diverse and beautiful. Without forests, many species would disappear, and our world would be less colorful.
Discuss and share
To protect forests, we can start by planting more trees. Planting trees helps to replace those that have been cut down. Also, we should avoid using products made from trees unless they come from places that grow new trees after cutting old ones. We can also recycle paper and reduce waste to help save trees. By doing these things, we can help keep our forests healthy and full of life.
Q2: What can we do to protect them
Read and complete
Complete the sentences with the words and the phrases below.
blow away
generation
hunt
sandstorm
solution
(1) The family lived in the village for five ___________ before they moved to Beijing.
(2) This is a difficult problem, but I am sure we can find a ________.
(3) The strong wind ___________ her hat, and it landed in the lake.
(4) ___________ are very common in the Sahara Desert.
(5) Killer whales usually ________ seals and sea lions for food.
generations
solution
blew away
Sandstorms
hunt
Homework
Have you been to Saihanba Find out more about the place online.
02
Listen to and read the passage in Page 62 for three times.
01
Bye-bye!

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