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八年级下册新世纪版《Unit Four People and the Environment Lesson 2 Man and the Environment》优秀教学课件
2.Develop Ss’ reading skills.
New words:
1.litter Vt. /Vi.乱扔；乱丢 n.废弃物 2.electricity n.电 3.consumer n.消费者 4.green consumer n.绿色消费者 5.take action采取行动 6.get rid of 处理掉；丢弃；摆脱 7.increase Vt. /Vi.增长；增加 8.rapidly adv.快地，迅速地 9.level n.水平；水平面 10.human n.人,adj人的；人类的 11.sort n.种类 Vt. /Vi.把...分类;拣选 12.reuse Vt. /Vi . n.再使用;重复利用 13.goods n.货物 14.burn Vt. /Vi.燃烧；烧毁 15.oil n.油；石油 16.blanket n.毯子，毛毯；覆盖层 17.escape Vt. /Vi.逃跑；逃脱;（液体、气体）逸出，漏出 18.climate n.气候 19.damage n.损害、毁坏)
Modern Man and the Earth The Earth has a history of more than 4 billion years, and modern man has lived on it for only 35,000 years. During that time, people have changed the Earth in many ways. They have done both good and bad things to the Earth.
Read the passage and complete the tasks.
T/F for paragraph 1
1.The history of the earth is less than 4 billion years.
2.Modern man has lived on it for only 30,000 years.
3.People do both good and bad things to the earth.
F
F
T
more
35,000
In big cities,cars and buses have polluted the air so that many people now have very bad health problems.Factories have also polluted the land,the air and the water.As a result,many rivers and lakes have become very dirty.Some of them are even dead now.
Read the passage and complete the tasks.
All over the world,people have cut down millions and millions of trees.Many types of animals, as a result,are in danger and the quality of the air has become worse.
Read the passage and complete the tasks.
Questions for Paragraph 2,3,4
In big cities ,what has polluted the air ?
Cars , buses and factories.
What have factories polluted?
The land, the air and the water.
Have many rivers and lakes become very dirty?
Yes ,they have.