作者运用列举法，是通过列举一系列的论据对topic sentence中摆出的论点进行广泛、全面地陈述或解释，列举的顺序可以按照所列各点内容的相对重要性、时间、空间等进行。
Yesterday was one of those awful days for me when everything I did went wrong. First, I didn't hear my alarm clock and arrived late for work. Then, I didn't read my diary properly and forgot to get to an important meeting with my boss. During the coffee break, I dropped my coffee cup and spoilt my new skirt. At lunch time, I left my purse on a bus and lost all the money that was in it. After lunch, my boss was angry because I hadn't gone to the meeting. Then I didn't notice a sign on a door that said "Wet Paint" and so I spoilt my jacket too. When I got home I couldn't get into my flat because I had left my key in my office. So I broke a window to get in－and cut my hand.
根据本段主题句中的关键词组everything I did went wrong，作者列举了8点内容，分别由first, then, during the coffee break, after lunch time等连接词语引出，使得该文条理清楚、脉络分明、内容连贯。
常用于列举法的过渡连接词有：for one thing , for another, finally, besides, moreover, one another , still another, first, second, also等。
There are many different forms of exercises to suit different tastes. For example, those who enjoy competitive sports may take up ball games. For another example, if they prefer to exercise alone, they can have a run or take a walk in the morning or in the evening. Besides, people can go swimming in the summer and go skating in the winter. In short, no matter what their interests are, people can always find more than one sports that are suitable to them.
本段采用了三个事例来说明主题句中的关键词组different forms of exercises，这三个例子分别由连接词for example, for another example 和besides引出，最后由引导的结尾句总结全段内容。
举例法中常用的连接词有：for example(instance), one example is, besides, furthermore, moreover, in addition等。
In the flat opposite, a woman heard the noise outside. When she looked out through the window, she discovered that her neighbour was threatened by someone. She immediately called the police station. In answer to the call, a patrol police car arrived at the scene of the crime quickly. Three policemen went inside the flat at once, and others guarded outside the building to prevent anyone from escaping.
The heart of an electronic computer lies in its vacuum tubes, or transistors. Its electronic circuits work a thousand times faster than the nicer cells in the human brain. A problem that might take a human being a long time to solve can be solved by a computer in one minute.
在这段文字上， 作者为了突出电子计算机运行速度之快，首先将它与人脑进行了比较， "---a thousand times faster than ---" ;而后，又将这一概念具体到了 ＂a problem＂上，通过对比使读者从 "---a long time ---in one minute＂上有更加直观的认识。
Ever since humans have lived on the earth, they have made use of various forms of communication. Generally, this expression of thoughts and feelings has been in the form of oral speech. When there is a language barrier, communication is accomplished through sign language in which motions stand for letters, words and ideas. Tourists and the people unable to hear or speak have had to resort to this form of expression. Many of these symbols of whole words are very vivid and exact and can be used internationally; spelling, however, cannot. Body language transmits ideas or thoughts by certain actions, either intentionally or unintentionally. A nod signifies approval, while shaking the head indicates a negative reaction. Other forms of nonlinguistic language can be found in signal flags, Morse code, and picture signs.
在该段中为了说明topic sentence中的 ＂various forms of communication＂，作者将其分为oral speech, sign language, body language及other forms of nonlinguistic language，并逐加阐述。
采用这种方法的段落并没有标志突出的连接词，所述各项均为平行并列关系，所以没有明显的主次之分。
6． 因果分析法(cause and effect )
在阐述某一现象的段落中，常采用因果分析法。例如：
The role of women in today's society is changing. One reason is that women have begun to assert themselves as independent people through the women's movement. Also, women are aware of the alternatives to staying at home. Another reason is that increasing numbers of women who enter new fields and interests serve as role models for other women. Moreover, men are becoming more conscious of the abilities of women and have begun to view their independence positively.
本段中，主题句提出了一种社会现象，推展句则对产生这种现象的原因作出各种解释。 常用于因果分析法的连接词有：because, so, as a result等。
7． 定义法(definition)
在科普文章的写作中，定义法是必不可少的。通过下定义，可以使读者对该事物有一个更直接的认识。
Automation refers to the introduction of electronic control and automation operation of productive machinery. It reduces the human factors, mental and physical, in production, and is designed to make possible the manufacture of more goods with fewer workers. The development of automation in American industry has been called the "Second Industrial Revolution".
Since that time, which is far enough away from now, I have often thought that few people know what secrecy there is in the young, under terror. I was in mortal terror of the young man who wanted my heart and liver; I was in mortal terror of my interlocutor with the iron leg; I was in mortal terror of myself, from whom an awful promise had been extracted;---
(例1)A sense of humor is really one of the keys to happiness. It gives zest to life to make
it worth living.
(例2)With all these benefits, it is no wonder that sports and games have now become
more popular with people than ever.
2．作出结论 文章最后用几句话概括全文内容，并进一步肯定文章的中心思想或作者的观点。
(例1)In conclusion, a good teacher-student relationship can be mutual beneficial. The students gain knowledge eagerly and enjoyably, and the teacher gains satisfaction from his job.
(例2)On the whole there are more advantages than disadvantages in the use of TV. Yet different people may have different attitude toward TV. But we must realize that television in itself is neither good nor bad. Its value to people and society depends on how we look at it.
3．应用引语 用格言、谚语或习语总结全文，既言简意赅又有更强的说服力。
(例1) If you have anything to do, try to do it yourself, for that is the safest way to
permanent success. Remember the famous saying. "Heaven helps those who help themselves."
(例2)If we stick to studies day after day, there is nothing that can't be achieved. As an old saying goes: "Constant dropping of water wears away a stone."
4．用反问结尾 虽然形式是问句，但意义却是肯定的，具有明显的强调作用，引起读者思考。
(例1)Therefore, listening skills must be consciously improved. Since it is such an important means of learning and communication, why should we not develop this ability as far as possible?
(例2)So，what can we benefit from wealth if we do not have health?
5．提出展望或期望 表示对将来的展望或期待读者投入行动。
(例1)I am sure that Chinese will become one of the most important languages in the world in the next century. As China will open further to the outside world the language is sure to be spread world widely.
(例2) If everyone has developed good manners, people will form a more harmonious relation. If everyone behaves considerately towards others and social ethics people will live in a better world. With the general mood of society improved, there will be a progress of civilization.
