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人教2003课标版《Using LanguageⅡ》优质课PPT课件下载
B. Plastic bags are a danger to the environment and people should use fewer and recycle them.
C. Cigarette butts and plastic bags are common but dangerous to the environment, so cleaning them up would improve the quality of the environment.
_______
sentence
Plastic bags are another common form of litter that is a danger to the environment.
supporting details
There are several reasons for this.
…made from… non-renewable resources
2billion…every day, last from 20~1000 years
float easily…and travel…; kill …
________
sentences
It is up to people not to let plastic bags become litter. It would be better if they used fewer and recycled them.
topic
concluding
A perfect paragraph usually consists of:
topic sentence
supporting sentences
concluding sentences
In China, 2 billion plastic bags are used every day.
This is a huge problem because they last from 20 to 1000 years in the environment.
Plastic bags kill up to one million seabirds, 100,000 sea mammals and countless fish each year worldwide.
numbers
conclusion：The writer uses _________to describe how dangerous plastic bags are to the environment.
Plastic bags last from 20 to 1000 years in the environment.