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《Welcome to the unit》精品PPT课件优质课下载
Para 3
Para 4
Para 5
a. What can we do to reduce global warming
b. What is global warming and
how does it work
c. Reasons and its effects
d. Introduction
e. The consequences of global warming
Task 2: Fast reading
Match the headings with the paragraphs and check your prediction.
put forward a problem
analyze the problem
solve the problem
The strategy for organizing expository article (说明文).
1. What is global warming?
Global warming refers to an average increase in the Earth’s temperature that, in turn, leads to climate change.
Task 3: Careful reading
Read paragraph 2 carefully and answer the questions.
2. What causes the rise in temperature?
The increase of__________________ ,
such as carbon dioxide, which trap heat
from the sun.
greenhouse gases
3.Which of the following is TRUE about greenhouse gases?