说明文是对事情的发生、发展、结果、特征、性质、状态、功能等进行解释、介绍、阐述的一种文体。这类文章的目的和性质是客观地介绍、解释事物，使读者获得知识和信息，并不需要发表主张、做出证明。一般说来，知识简介，商品介绍，旅游指南，科技读物，工作总结，实验报告，教材辅导等均属说明文之列。
removal写说明文，可以按时间、空间、结构、逻辑顺序来写，也可以采取举例、比较、对比、分类、分析、说明、叙述等方法。
1.比较对照
比较对照有两种，一是逐点比较，二是整块比较，即AB交错或先A后B：
1）逐点比较：多数人认为这种AB交错的方式可以避免行文的单调沉闷，对比的效果更鲜明突出。如：加油的英文怎么写
There are basic differences between large and small enterpris. In a small enterpri, you operated mainly through personal contacts. In a large enterpri, you have established “policies” , “channels” of organization, and fairly strict procedure. In the small enterpri you
have immediate effectiveness in a very small area. You can e the effect of your work and of your decisions ground. In the large organization you are normally taught one thing thoroughly. In the small one the danger is of becoming a Jack-of-all-trades-but-master-of-none. In the large it is of becoming the man who knows more and more about less and less.
2) 整块比较
It is easy to be a winner. A winner can show his joy publicly. He can laugh and sing and dance and celebrate his victory. People love to be with winners. Winners are never lonely. Unlike winners, lors are the lonely ones of the world. It is difficult to face defeat with dignity. Lors can not show their disappointment publicly. They can not cry or grieve about their defeat. They may suffer privately, but they must be compod in public. They have nothing to celebrate and no one to share their sadness.
2.分类
分类是人类认识客观世界的重要手段之一，也是描写事物、解释观点最有效的方式之一。通过将一事物分类，可使复杂事物变得清晰明了，便于作者阐述自己的观点。
分类段落的各类排列要条理，可采用从主要到次要，从次要到主要，从多到少或从少到多等方式排列，亦可平行排列。如：
1） As far as political views are concerned, people fall into three categories. First are the conrvative people. Conrvatives are oppod to sudden or great changes. Second are the liberal people.The people are in favor of progress and reform. But their opinions often em to idealistic. The third type is the moderate people. The moderates keep everything within reasonable limits. They are more practical in this hard world. In my opinion, most people em to belong to this group.
本段采用平行排列的方式，按人的政治观点分为三类：保守、自由和温和。
geeky2) The are veral reasons why I decided tom attend Bingston University . First of all, the tuition is reasonable. Secondly, the university has a deferred payment plan., which les
我们和地球英语怎么说sons the load of peasant families like mine. Another reason is that Bingston has the finest teachers in its graduate program. My chief reason, however, is Bingston’s program in agriculture, my chon field, which is recognized as the leader in this area.
该段采用主次排列的方式，分析了作者决定上Bingston大学的原因。
3) According to Mr. Li, the fifteen students of his cLASS fall into three groups. Seven of them work hard and study well. They always get good marks in examinations and are often praid by the teachers. Li calls them “good students”. The monitor, the cretary of the Youth League, and the captain of the cLASS volleyball team, are quick in finding out what their fellow students are interested in or what they should do as a collective. They always organize proper activities at the proper time. So Li calls them “good organizers”. Four other students are very kind to their cLASSmates, always ready to lend them a helping hand. They help to clean the cLASSroom and the corridor even when they are not on duty. Li says that they are “ good comrades”. “What about yourlf?” someone asks him. “I’m a group by my lf ——a good obrver”.
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该段不同于以上两段，不是先分类再解释，而是先说明其特点，然后定义分类。虽分类并不科学，却达到了其幽默之目的。
3.特征英语机构加盟
例证指具体说明人或事物特点、本质及其规律的方法。所用例子需有代表性、典型性。例证型段落的写作方式多为先提出主题再列举事例。在事例之前一般有For example或For instance。例证后面，根据情况还可以加上结论句。如：
In order to prevent non-smokers from being affected, measures must be taken to reduce the chances of smoking. A lot of work can be done concerning this. For example, in some public places, such as in the theatres and cinemas, smoking should be forbidden. Even on the train or plane people should not be allowed to smoke. Doctors, teachers and government leaders should take the lead not to smoke. Above all, the harmfulness and dangers caud by smoking should be made known to all through newspapers, broadcast, or TV programs. Also the growing of tobacco and the production of cigarettes should not be encouraged. If the measures can be taken, we can effectively reduce the
摩登家庭 美剧chances of smoking.
经典英文电影4 因果
因果是两个事物之间的关系。一些说明文，议论文通过分析因果关系说明一个中心思想。如不能把因果关系解释清楚，文章将无法说明任何主题。
因果型段落的扩展模式有两种，一是分类编法，另一个是连环编排法。如果只讨论成因或只讨论结果，细节比较简单，只需按其重要性或其逻辑顺序进行编排。分类编排法指先讨论原因，然后讨论结果；或先讨论结果，后讨论原因。
1）分类编排法：
Music is my chief hobby. When I listen to music, good things happen to me. If I am lonely or homesick, I listen to pop music. The quick rhythm, the strong beats of drums lift my sprits. If I am familiar with a song, I will sing alone with it and my depression disappears. When I am bored or very tired, I listen to Mozart. His music makes me feel alive. Music also reminds me of home. Before I came to college, my sisters and I would listen to musi
北京新东方英语报名c and sing songs together and cheer us. Now I enjoy listening to music and singing with my roommates becau their smiles make me remember the happy times with my family. For me, music is an excellent escape, and without it, I wouldn’t be so happy。
