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新世纪版英语八年级下册《Unit Four People and the Environment Lesson 2 Man and the Environment》多媒体精品ppt课件
D. an environmental protection book
The main idea of each paragraph
Para 1: the history of the earth
Para 2&3: the bad things we did to the Earth and their bad effects
Para4: the greenhouse effect
Para 5: the measures we’ve already have taken
Para 1
1. How old is the Earth?
It has a history of more than 4 billion years.
For only 35,000 years.
They have done both good and bad things to the Earth.
2. How long has modern man lived on it?
3. What have people done to the Earth?
Scan Para 2-3 and fill in the table:
Bad Things
1. Cars and buses:
pollute the _____
2. Factories:
pollute the ______,
the________ and
the________
3. People: cut down
millions and millions of
_______
air