Directions: For this part, you are allowed 30 minutes to write a short essay entitled Limiting the Use of Disposable Plastic Bags. Write at least 120 words following the outline given below.
1.一次性塑料袋曾广为使用
2.由此带来的问题
3.限制使用一次性塑料袋的意义
原文
Two decades ago, people, especially seniors, used to sack goods in blankets. But as the society develops dramatically, disposable plastic bags became commonly used in shops, supermarkets and vegetable stands.
修改
Two decades ago, many people, especially senior citizens, used to carry their goods in cloth wrapping or in bamboo baskets. But with the dramatic social changes, disposable plastic bags have become the most commonly used container in shops, supermarkets and vegetable stands.
解析
1. 第一段第一句中people, especially seniors, used to sack goods in blankets建议改为many people, especially senior citizens, used to carry their goods in cloth wrapping or in bamboo baskets。 原句语法没有问题，但在意思上有些不妥。 sack goods(将货物装袋)是可以讲的, 但用毯子装就有些不可思议了。
原文
However, with the increasing temperature all over the world, the use of disposable plastic bags also contribute to the global warming. Inevitablely, our surroundings are seriously polluted. The use-and-throw habits make a lot of plastic bags fill through air and streets. On top of that, it adds the cost of producing plastic bags and controlling the environment. What a big waste of the limited source! Under the rough circumstances, we are far away from the aim of creating a green world.
修改
However, with temperatures rising all over the world, disposable plastic bags have caused a great deal of concern among the public, because valuable natural resources are consumed in making the bags, and they contribute to global warming and environmental degradation. This throwaway attitude makes things even worse. Plastic bags can be seen flying through the air and many streets are littered with them. This adds to the cost of protecting the environment. What a waste! Under the circumstances, the government has to take steps to limit the use of plastic bags..
解析
2. 第二段第一句中的with the increasing temperature all over the world, the use of disposable plastic bags also contribute to the global warming建议改为with temperatures rising all over the world, disposable plastic bags have caused a great deal of concern among the public, because valuable natural resources are consumed in making the bags, and they contribute to global warming and environment degradation原句不但语法上有错(use作主语，动词应为contributes)，而且意思不通。With引导的介词短语应作原因状语用，但在这里它与主句意思上却是并列的。改过之后，把因果关系说清楚了，文章的内容也得以充实。
3. 第二段第三句The use-and-throw habits make a lot of plastic bags fill through air and streets建议改为This throwaway attitude makes things even worse. Plastic bags can be seen flying through the air and many streets are littered with them。 The use-and-throw habit是自创的词汇，虽然能懂，但英语中已有现成的表达throwaway，就不必另造新词。make a lot of plastic bags fill through air and streets中的through是多余的，因为fill本身是及物动词。但即便去掉through，句子仍然不地道，改过之后，就很自然了。
4. 第二段第四句On top of that, it adds the cost of producing plastic bags and controlling the environment建议改为This adds to the cost of protecting the environment。首先，On top of that在这里并没有把前后的逻辑关系表现出来，改用代词This后就很清楚了。其次，add作及物动词的用法是add sth. to…，而作不及物动词的用法是adds to，意为增加，等于increase。另外一个问题是意思上的，人们的throwaway habit并不增加塑料袋的生产成本，故应删去。
5. 第二段第五句What a big waste of the limited source中的source应改为resource。前者的意思是“来源”，后者的意思才是“资源”。试比较下面几个句子：
Every shadow implies an object and a source of light.
These visitors provide a new source of income for the village shopkeepers.
Many of these countries are rich in timber and mineral resources.
An immeasurable amount of natural resources were lost forever through misuse。
