The ban of plastic bags.

The ban of plastic bags iswas issued in 2008. I think Chinese people use too muchmany plastic bags, which is the main reason why the government issued this law. As I know, In China, there are about 3 billion plastic bags be used up each day, that is really a huge number.
Everyone knows that, a lot of plastic bags cando not decompose, so that they and will increasingly pile up and never disappear. Thus plastic bags may make the "white pollution" and our environment pollution become more and more seriouslyenvironmental problems will become more and more serious.
The government has forbidden the shops and supermakets from offering free plastic bags for to the shopper. This ban can curb the useing of plastic bags. Nowadays, If you want to use plastic bags, you shouldmust pay for itthem. The small one maywill cost you 1yuan and the bigger one cost 2yuan, it's very expensive, so a lot people use a cloth bag or baskets instead of it. So The usage of plastic bags arehas been greatly reduced.
I think this ban is really helpful for our environment.

Really good. I've never heard the phrase "white pollution" before, but it seems appropriate.

The ban ofn free plastic bags

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Free plastic bags were banned in 2008.

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Thus plastic bags may make the cause "white pollution" and our environmental pollution becomes more and more seriously.

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A couple of minor changes/suggestions in addition to the previous correction.