Unit One一次性塑料袋的使用

1、一次性塑料袋曾经广泛使用

2、由此带来的问题

3、限制一次性塑料袋的意义

1. 文章结构构思

文章结构：采取三段式的结构，有描写现象——阐释问题——说明意义。对每个段落结构，比如说描写现象、阐述问题、说明意义、发表评论等都进行了逐个讲解，并给出了具体的独家的闪光句型。

文章构思：在描写一次性塑料袋的广泛使用的时候，可以联想到你在学校食堂，超市等购物场所的经历，注意主题句+扩展句的结构模式，第一句写的一定要有亮点，吸引别人的眼球。然后是第二段，说明问题，一般列举2--3个问题就可以了，比如说使用一次性塑料袋首先可以造成环境污染，其次是对人们的身体健康有害，再次增加了经济成本，与构建环境友好型资源节约型社会的目标相背离等。注意列举问题时候的连接词的使用，段落内的句子与句子之间要有层次感。最后一段是写限制一次性塑料袋的意义，同样注意连接词的运用，与第二段的问题阐述的连接词最好有一定的变化啊，体现出对英语词汇、短语的驾驭能力。

2.words and expression

disposable 一次性的

irreversible  不可更改的，不可挽回的

biodegradable  能进行生物降解的

poison  使中毒

block the drainage system 堵塞排水系统

be of great convenience 非常方便

remarkable 不寻常的

In view of 鉴于

enhances people’s awareness 增强人们的意识

undoubtedly 毫无疑问

disadvantage 劣势

apparent 明显的

indecomposable 不能分解的

minimize its damage 将损失降到最低

negative effect 负面影响

issued strict laws 制定严格地法律

3. 有用的句型和表达方式

(1) nowadays an increasing number_________, in order to

(2) nowadays more and more people________, resulting in

/causing/contributing to/leading to/posing a threat to/doing harm to

(3)sth has been brought into people’s focus.

(4) we should araise the awareness of /pay attention to/attach great importance to /place our focus on/place the emphasis on/focus on/emphasize the importance/take measures to/place strict limits upon

4. 翻译

 (1). 现在一次性塑料袋的使用问题成为人们关注的焦点。（bring into focus）

 (2). 使用一次性塑料袋的人都认为塑料袋十分便利。（of great  convenience ）

 (3). 鉴于问题的严重性，政府采取措施限制一次性塑料袋的使用。（in view of , place strict limits upon）

 (4). 我们没有意识到的是一次性塑料袋极大地危害了我们的健康。（have remarkable negative impact on）

 (5). 我们应该增强人们保护环境的意识。（enhance）

5.例文学习

                         A

Nowadays we may find ourselves surrounded by a sea of disposable plastic bags. And recently the problems of using disposable plastic bags have been brought into people’s focus.

First of all, the use of disposable plastic bags causes irreversible harm to our environment. As these bags are not biodegradable, they are blocking the drainage system and causing water pollution.

What’s more, customers using disposable plastic bags may think that they are of great convenience. But what they don’t quite realize is that there will be remarkable negative impact on our health. And sometimes careless disposal of these bags may even poison some innocent animals.

In view of the severity of this issue, effective measures have been taken in our country. There has been a strict limit on the using of disposable plastic bags in supermarkets, which not only enhances people’s awareness on environmental protection but also cuts down the cost of the running of supermarkets.

                            B

For many years we have been using disposal plastic bags when we are shopping on the market, and most often these bags are offered by the shops for free. This, undoubtedly, has brought us great convenience in our daily life.

However, its disadvantages are also very apparent, and I’ll just venture to explore two aspects. For one thing, the plastic bags are mostly indecomposable in the natural state so that with the increasing use of these bags, it will not only seriously bring about the so-called “white pollution” to the environment, it can also cost us a lot to have them decompose completely so as to minimize their damage to the environment. For another, the production of plastic bags are often not strictly supervised, so a large proportion of the bags don’t meet the requirements for healthy products, which means the more we use them, the more likely we are to suffer in health.

The negative effects of the plastic bags are far serious than what I’ve mentioned above, so it’s high time the government issued strict laws and measures to stop using the bags. By so doing, we can save a lot of money from producing these bags as well as return a cleaner earth to ourselves and the later generations.