标签：500字优秀作文,初中优秀作文600字,http://www.qingsong8.com 关于节约用水的英语作文,
关于节约用水的英语作文

The world is not only hungry,but also thirsty for water. This may seem strange to you, since nearly 75 % of the earth's surface is covered with water. But about 97% of this huge amount is sea water, or salt water. Man can only drink and use the other 3% -- the fresh water that comes from rivers, lakes,underground, and other sources. And we cannot even use all of that, because some of it is in the form of icebergs and glaciers. Even worse, some of it has been polluted.

However, as things stand today, this small amount of fresh water, which is constantly being replaced by rainfall, is still enough for us. But our need for water is increasing rapidly-- almost day by day. Only if we take steps to deal with this problem now can we avoid a severe worldwide water shortage later on. A limited water supply would have a bad effect on agriculture and industry. Let me give you just one small exampie of how necessary water is to industry. Did you know that to produce a single ton of steel, it takes about 91, 000 liters of water?

We all have to learn how to stop wasting our precious water. One of the first steps we should take is to develop ways of reusing it. Experiments have already been done in this field, but only on a small scale. For us, the systems are as important as the spacecraft.

关于节约用水的英语作文的延伸阅读——作文的写作注意事项

1.开头的写法
　　开头的写法：万事开头难，写作文也是如此，但文章的开头很重要。常用的方法有以下几种：　
　　(1) 背景法：说明事件发生的时间、地点、情景等背景。
　　(2) 人物法：交代文章所要描述的主要人物或有关人物。
　　(3) 主题句法：提出一个观点或论据作为文章要阐明或论述的主题。
　　(4) 问题法：用提问的方式来引出文章的内容，以引起读者的注意力。
　　(5) 惊语法：用令人感到惊奇的句子开头，激起读者的兴趣。
　　(6) 故事法：以讲故事的形式作为文章的开头，在此基础上展开文章。多用于记叙文，也可用于议论文。
　　(7) 数据法：引用已经被证实的数字来引起话题。
　　(8) 引语法：引用名人名言或常见习语、谚语等作为文章的开头。
　　(9) 定义法：常见于对标题下定义，然后通过举例、逻辑推理等方法加以详细说明。
　　（10）夸张法：以一个绝对不可能发生的为前提，吸引读者
　　（11）侧面转折描写：从另一个方面来烘托文章主题，引出下文。
　　(12）设置悬念：激起读者的兴趣，文章格调升华。
2. 正文的写法
　　(1) 演绎法：
　　从一般到个别。把带普遍性和概括性的句子放在段首，段落中其他的句子就是对主题句的具体化，是对主题句的具体说明。
　　(2) 归纳法：
　　从特殊到一般。具体、个别的事例出发，总结出一般的规律。
3.结尾的写法
　　(1) 简要评价或作结论：文章的最后几句概括全文内容，并进一步肯定文章的中心思想或作者的观点。
　　(2) 首尾照应句： 回到文章的中心思想或主题句上，达到再次肯定或强调的效果。
　　(3) 用反问句结尾：虽然形式是疑问句，但意义是肯定的，具有很明显的强调作用，能引起读者的思考。
　　(4) 提出展望或希望：对未来提出展望或希望，号召读者为此而行动。
　　(5) 引用名人名言、谚语、常用习语结尾。

        关于节约用水的英语作文，关于节约用水的英语作文