英语说明文作文600字【一】
这种题型的特点是：在文中抽出一个句子或一个文段，要求分析这个句子或文段在全文结构上的作用。这种题型解法很简单：首先判断句子或文段是在文首、文中、还是文末;然后再按如下规律答题即可。一般情况下，句子或文段在文中不同的位置有不同的作用：在文首，作用多是统领全文、总起全文或引出下文;在文中，作用多是承上启下;在文末，作用多是总结全文。
英语说明文作文600字【二】
People all over the world today are beginning to hear and learn more and more about the problem of pollution. Pollution is caused either by man’s release of completely new and often artificial substances into the environment, or by releasing greatly increased amounts of a natural substance, such as oil from oil tankers into the sea.
The whole industrial process which makes many of the goods and machines we need and use in our daily lives, is bound to create a number of waste products which upset the environmental balance, or the ecological balance as it is also known. Many of these waste products can be prevented or disposed of sensibly, but clearly while more and more new and complex goods are produced there will be new, dangerous wastes to be disposed of, for example, the waste products from nuclear power stations. Many people, therefore, see pollution as only part of a larger and more complex problem, that is, the whole process of industrial production and consumption of goods.
Others again see the problem mainly in connection with agriculture, where new methods are helping farmers grow more and more on their land to feed our ever-increasing populations. However, the land itself if gradually becoming worn out as it is being used, in some cases, too heavily, and artificial fertilizers cannot restore the balance.
Whatever its underlying reasons, there is no doubt that much of the pollution caused could be controlled if only companies, individuals and governments would make more efforts. In the home there is an obvious need to control litter and waste. Food comes wrapped up three or four times in packages that all have to be disposed of; drinks are increasingly sold in bottles or tins which cannot be reused. This not only causes a litter problem, but also is a great waste of resources, in terms of glass, metals and paper. Advertising has helped this process by persuading many of us not only to buy things we neither want nor need, but also to throw away much of what we do buy.
Pollution and waste combine to be a problem everyone can help to solve by
cutting out unnecessary buying, excess consumption and careless disposal of the products we use in our daily lives.
英语说明文作文600字【三】
适合这类题型的阅读理解通常具体反映在文章的题目或一段短文的小标题上;很多文章从一开头就直接说出观点，表达中心思想。所以对于这类题型，一定要提示学生注意主题句和主题段，绝大多数的短文类似于语文的老三段，注意段与段之间的联系，注意隐藏的中心思想，准确了解文章结构，把握句与句之间的关系，注重逻辑关系，把握住文章的脉络即可。
英语说明文作文600字【四】
先要理解所引古籍或名言的含义，现联系说明的内容，看看这两者间有何内在联系，就能领悟其引用的目的了。在说明的开头文段或中间叙述有关的故事，究竟起何作用：
在文章开头叙述故事，其目的往往是为了引起读者阅读的兴趣，或者是为了引出说明对象。
在文章或段落中间叙述故事，往往是为了增强说明文的可读性，同时也为了说明事物的来源或作用。
