九年级英语The Great Green Wall课件1.ppt

Lesson 42 the Great Green Wall
droughts
Floods
Prevent the floods and the droughts
Keep rain from hitting the soil directly and then the soil is not easily washed away
Discussion:
Have you ever heard of the Great Green Wall?
What is the Great Green Wall?
Where does China build the Green Great Wall?
What does the Green Great Wall do?
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Sanbei shelter-forest(三北防护林) is known as China’s Great Wall. It is a “Great Green Wall” of trees, millions of trees. China has built a new Great Green Wall across the northern part. The Great Green Wall also covers some of the northeast. It covers % of the land of China. The building of the Great Wall will take 73 years(1978-2050). The Great Green Wall has already saved a lot of land by blowing the earth away and stopped the sand from moving towards the rich farmland in the south.
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Skimming:
long and how wide is the Green Great Wall?
2. What will happen to the mountains and people’s lives there in a few years’ time?
Further reading:
Find out the topic sentence in each paragraph.
The main idea of each part:
para1:
Para2-3:
Para4-6:
The importance of forests
Sth about the Green Great Wall
Sth about Wang, other workers and their work; what Wang thinks about the Great Green Wall and his work