为了提高
Many parts of the world are losing important natural resources, such as forests, animals, or clean water. Choose one resource that is disappearing and explain why it needs to be saved. Use specific reasons and examples to support your opinion
Many natural resources are being wasted and abused on our planet every day. One of the most important resources we are abusing is our trees. Each year, hundreds of thousands of acres of trees disappear in countries all around the world. In some countries, these trees are used for fuel. In other countries, trees are destroyed to build housing developments and shopping centers. Saving trees has become a major cultural and economic issue for many of the world’s countries and governments.
Trees are essential to our survival: living trees have a biological process called photosynthesis, which is the process by which green plants use carbon dioxide to sustain themselves. A byproduct of the process is oxygen, critical to the survival of oxygen-breathing organisms like us. The fewer trees there are, the more this affects our ability to breathe.
Trees are also important in the development of many medicines. The mainstream medical establishment did not recognize this for many years. However, those who use natural or herbal medicines have always known how important trees are. Now scientists are agreeing with them. Many drugs are derived from the leaves of certain trees, and from other herbs and plants.
In rural areas, farmers have always known how important trees are in soil conservation efforts. This is why you’ll usually see trees lining a field. Tree roots help keep the soil in place, and are also a factor in water distribution deep beneath the ground.
Finally, we should save trees from disappearing because they provide so much pleasure. ‘I think that I shall never see a poem as lovely as a tree,’ wrote a poet, and that is the truth. A tall, stately tree is beautiful to behold, and pleasing to the soul. It is also a great place to find shade on a hot summer’s day.
满分要素剖析
一、 语言表达
本文的语言十分优美。这美一方面是由于文章语言的简洁，毫无赘述而产生，另一方面是作者由优美的描述，丰富的词汇量而来。
1、Trees are essential to our survival: living trees have a biological process called photosynthesis, which is the process by which green plants use carbon dioxide to sustain themselves. Be essential to表示对…来说是必需，相当于a necessity 或者是be necessary to。Living在这里用作形容词，表示活着的。Photosynthesis光合作用。后面的句子是同位语从句包含定语从句，开始对光合作用进行解释，一定要注意不要被绕晕，介词by不能遗漏。
2、The fewer trees there are, the more this affects our ability to breathe. 表示“越…越…”用了the+比较级… the+比较级的结构，每个部分后面都是接倒装语序。
3、A tall, stately tree is beautiful to behold, and pleasing to the soul. 描述树的形象，这里用了stately，解释为impressive and graceful or dignified，是一种庄严，雄伟，高贵的形象，这是从树的高大，笔直的特征出发，十分符合树的外貌所表现出来的拟人化的性格特征。Behold注视，看到，是一个比较正式的，比较书面化的表达，与stately的感觉搭配一致。Pleasing表示愉悦，舒适的。这句话用简单句的形式，书面化的表达，写出了赞美诗一般的感觉，还注重了两个部分末尾单词的押韵，文学性非常强。
二、 逻辑结构
全文从四个方面解释了为什么要保护树木的理由：光合作用提供生存的氧气;医药的原料来源;农民们的好帮手;给心灵带来舒适愉悦的感受。这四个方面以生存和生活为导向，道出树木的重要角色。文章采用的是总分的结构，末尾没有总结，但是在分论点的讨论上涉及面广，比较全面，每个分论点也是以总分的结构打造。
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