The Dangers of Deforestation|森林砍伐的危机

The Dangers of Deforestation

森林砍伐的危机

提示

　　森林就如同地球的肺部，不辞辛劳地为人类制造维持生命所需的氧气。然而，人类为了追求物质的欲望，不惜滥垦森林，因而导致了二氧化碳不断地增加。上述情形除了造成温室效应与气候的变迁，也进而影响人类的生存。请你藉由此文，写出为何会发生砍伐森林的情形，以及森林带给世界的益处，并说明滥垦森林所带来的后果。请写一篇约 120 至 150 个单词（words）的英文作文，文分两段，第一段以 Deforestation is occurring around the globe at an alarming rate. 开头；第二段则以 There are a number of reasons why people should be troubled by massive deforestation. 开头并加以发展。

写作小栈

1.   主题句引导写作（guided writing）必须使用所指定的主题句（topic sentence）作为段落的开头，以主题句开头后，接着以下段落所有的句子都必须支持该主题句的指示方向进行，也就是思路的发展要符合主题句，如此才不会离题。

2.   依据提示的主题句，第一段重点在于说明森林遭到砍伐的原因，第二段则探讨森林对人类的影响。

构思方向

第一段：   说明世界各地为什么有这么多森林遭到砍伐，写作重点在于 why，以 4 至 6 句说明农业以及伐木业的发展导致森林砍伐正以惊人的速度在全球各地发生。

第二段：   说明树木为世界带来的益处以及森林砍伐所造成的影响，写作重点在于 how 和 what，以 4 至 6 句说明树木对世界有何益处，以及少了树木对我们有何影响。

动动脑（Brainstorming）

利用 2 W (Why + What) + 1 H (How)

第一段 Why is there so much deforestation around the world?

第二段 a. How do trees benefit the world?

b. What are the effects of deforestation?

结论句 For these reasons, it is essential that people understand the value of trees and do everything in their power to prevent a world without them.

大纲

第一段引导句：Deforestation is occurring around the globe at an alarming rate.

•    Large swaths of land are regularly cleared to make way for farming operations.

•    While this results in more land to grow crops, it drastically reduces the number of trees.

第二段引导句：There are a number of reasons why people should be troubled by massive deforestation.

•    Trees have the beneficial attribute of removing carbon from the atmosphere and transforming it into oxygen.

•    Without trees to perform this vital function, the air we breathe would be unhealthy and full of carbon dioxide and other pollutants.

第二段结论句：For these reasons, it is essential that people understand the value of trees and do everything in their power to prevent a world without them.

范文

　　Deforestation is occurring around the globe at an alarming rate. One of the forces behind this large-scale destruction of trees is agriculture. Large swaths of land are regularly cleared to make way for farming operations. While this results in more land to grow crops, it drastically reduces the number of trees. Similarly, logging operations are responsible for the destruction of many woodlands.

　　There are a number of reasons why people should be troubled by massive deforestation. Trees have the beneficial attribute of removing carbon from the atmosphere and transforming it into oxygen. Without trees to perform this vital function, the air we breathe would be unhealthy and full of carbon dioxide and other pollutants. This, in turn, would dramatically increase the effects of global warming. For these reasons, it is essential that people understand the value of trees and do everything in their power to prevent a world without them.

　　森林砍伐正以惊人的速度在全球各地发生。这种潜藏在大规模破坏树林背后的主要因素之一，便是农业的兴起。大片的土地经常被清除来从事农耕。虽然这将使得更多的土地可种植农作物，但是却大大减少了树木的数量。同样地，伐木业也得为许多林地的破坏负起责任。

　　有一些理由可解释为何人们该为大规模的森林砍伐而困扰。树木拥有移除大气中的碳并将它转化为氧气的有益特质。如果没有树木来执行这项重要的功能，我们所呼吸的空气将会是不健康的，而且充满了二氧化碳和其他污染物。接着，这将使得全球暖化的影响大大增加。基于这些原因，人们有必要去了解树木的价值，并竭尽全力来防止世界失去树木。

进阶范文

　　Around the world, huge numbers of trees are cut down every day. One reason trees are frequently destroyed is that the land is needed to grow crops. Once the trees are removed, farmers can use the land to grow food and make money. Another big reason trees are cut down is due to logging. Companies turn the trees into lumber, which is sold to make houses, furniture, and many other practical items.

　　People should be deeply concerned about the large numbers of trees being cut down. Trees absorb greenhouse gases and produce oxygen. In addition, trees help keep moisture in the soil. If continued, deforestation would create a world without trees and our planet would be a terrible place. The air would be difficult to breathe, and global warming would get worse. Therefore, people should realize the importance of trees and oppose indiscriminate logging.

　　在世界各地，每天都有大量的树木被砍伐。树木经常遭到破坏的原因之一，便是人类需要土地来种植农作物。一旦树木被砍掉，农民就可以利用土地来种植粮食并赚取钱财。树木被砍伐的另一个主要原因是由于伐木业的兴起。伐木商把树木转变为木材，并将木材卖掉来盖房子、制作家具和许多其他实用的物品。

　　人们应该强烈担心大量树木遭到砍伐。树木会吸收温室气体，并产生氧气。此外，树木有助于保持土壤中的水分。如果砍伐森林的情形继续下去，将会创造出一个没有树木的世界，而我们的地球将成为一个可怕的地方。呼吸空气将变得很困难，全球暖化的情况会变得更严重。因此，人们应该了解树木的重要性，并且反对恣意砍伐。