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必修4《Using LanguageⅠ》新课标PPT课件优质课下载
Reading for details: Draw a thinking map on your paper.
chemical farming
damage the _____________
chemicals_____ in bodies, leading to________
grow too fast _____________
organic farming:
problems
without using any_______
methods
_________ as fertilizer
change ______every few years
use_____________soil
plant________between crops
goals
grow____
avoid___
Speaking
Make a summary(总结） of the passage according to
your thinking map.
Plastic or cloth bags?
Discussion& writing
Write an article about it
by imitating(模仿） the language
and structure of the passage.
Over the past half century, …have become very common …. …welcomed them as a … way to …. Recently, however, we have been finding that they can cause damage to …, even …, to people’s health.