Limiting the  Use of Disposable Plastic Bags
　　In the past, a great many people used to use disposable plastic bags for shopping and other purposes. However, the excessive use of disposable plastic bags has led to great damages both to environment and to people's health.
　　On the one hand, it takes about 200 years for a buried plastic bag to decompose and be absorbed by the soil. On the other hand, the use of disposable plastic bags will indirectly do harm to people's health, which is less known to the public. Sometimes people buy hot food packed into disposable plastic bags to save the time and labor in washing their dining utensils. Yet they are not informed of the chemicals in the bags will release in high temperature. Therefore, they are eating the poisonous stuff while enjoying the tasty food.
　　It's enlightening and significant that our government has banned the free provision of disposable plastic bags in supermarkets. Trial practice has shown considerable reduction in the consumption of bags. In a word, fewer plastic bags will bring us the sustainable development of our earth.       (177 words)

结构剖析
　文章分为三段
　第一段首句提出在过去的日常生活中人们经常使用一次性塑料袋的现象，再通过however进行转折，指出使用一次性塑料袋无论是对环境还是对人民的身体健康都存在严重的危害。
　第二段通过使用on the one hand和on the other hand分别说明一次塑料袋的两个严重的危害。
　第三段首先指出作者对于政府的限塑令持赞成态度，并说明限制使用一次性塑料袋的好处，最后一句话用in a word总结全文。

 


限制使用一次性塑料袋
　　过去许多人在购物或其他时候常常使用一次性塑料袋。然而，过度使用一次性塑料袋已对环境和人们的健康造成了巨大的危害。
　　一方面，一只埋在地里的塑料袋需要两百年时间才能降解，被土壤吸收； 另一方面，一次性塑料袋将直接对人体健康造成损害，大家对这一点知之甚少。有时人们为了省时省事，不用清洗餐具，就将买来的热腾腾的食物装进一次性塑料袋里。而他们并不知道袋中的化学物品在高温下会释放出来。因此，在享受美食时，他们吃的其实是有毒食品。
　　我国政府已禁止超市免费提供一次性塑料袋。这是很有启发性、很重要的。试行的政策已表明塑料袋的消费有了大幅度的减少。总之，少用塑料袋可让我们的地球保持可持续发展。

excessive  adj. 过度的
lead to  导致
decompose  v. 分解
do harm to...  损害，伤害
dining utensils  餐具
be informed of  被告知
poisonous adj. 有毒的
enlightening  adj. 有启迪作用的
provision  n. 供应
sustainable development  可持续发展

1. However, the excessive use of disposable plastic bags has led to great damages both to environment and to people's health. 然而，过度使用一次性塑料袋已对环境和人们的健康造成了巨大的危害。
2. On the one hand, it takes about 200 years for a buried plastic bag to decompose and be absorbed by the soil.  一方面，一只埋在地里的塑料袋需要两百年时间才能降解，被土壤吸收。
3. On the other hand, the use of disposable plastic bags will indirectly do harm to people's health, which is less known to the public.  另一方面，一次性塑料袋将直接对人体健康造成损害，大家对这一点知之甚少。
4. It's enlightening and significant that our government has banned the free provision of disposable plastic bags in supermarkets.  我国政府已禁止超市免费提供一次性塑料袋。这是很有启发性、很重要的。