1.羅列法(listing)
在文章開始時提出需要說明的東西和觀點，然后常用first，second，…and finally加以羅列說明。羅列法廣泛地使用于各類指導性的說明文之中，下面這篇學生作文就是用羅列法寫成的：
Early Rising
Early rising (早起) is helpful in more than one way. First， it helps to keep us fit (健康)。 We all need fresh air. But air is never so fresh as early in the morning. Besides， we can do good to our health from doing morning exercise (做早操)。
Secondly， early rising helps us in our studies. We learn more quickly in the morning， and find it easier to remember what we learn in the morning.
Thirdly， early rising enables (使能夠) us to plan the work of the day. We cannot work well without a good plan. Just as the plan for the year should be made in the spring， so the plan for the day should be made in the morning.
Fourthly， early rising gives us enough time to get ready for our work， such as to wash our faces and hands and eat our breakfast properly.
Late risers may find it very difficult to form the habit of early rising. They ought to make special efforts to do so. As the English proverb says，“Early to bed and early to rise， makes a man healthy， wealthy and wise.”
羅列法經常用下列句式展開段落，我們可以注意模仿學習：
There are several good reasons why we should learn a foreign language. First of all， …Secondly， …And finally， …
We should try our best to plant more trees for several good reasons First of all， …Secondly， …And finally，
必須指出的是，有時羅列法并不一定有明確的first， second…等詞，但文章還是以羅列論據展開的。
2.舉例法(examples)
舉例法是用具體的例子來說明我們要表達的意思，常用for example， for instance， still another example is…等詞語引出。下面這篇學生作文就是用舉例法寫成的：
Recreation
It is impossible to keep in good health unless we take enough recreation (娛樂)。 The mind， too， needs change to make it fresh and vigorous (有活力的) There is much truth in the old saying， All work and no play makes Jack a dull boy.“
There are many games which boys and girls can play after their school work is done， for instance， football， tennis， and kite-flying. Other examples of recreation are boating， fishing， gardening， cycling， walking， chess-playing， and reading. Persons who sit much at their business should take a kind of recreation that will supply their muscles (肌肉) with exercise. Those who spend most of their time in the open air and do manual work (體力活) should adopt (采納) reading or some other quiet form of recreation.
Cycling is said to be an important means of recreation， but many persons foolishly tire out themselves by cycling too much. The same may be said in regard to football. Tennis is a pleasant form of recreation. Many persons take great delight in boating. Fishing requires much patience， and there is much danger of taking cold by sitting still on a cold day too long. A good brisk (輕松) walk is one of the finest forms of exercise. For persons engaged in outdoor labor， chess-playing is another excellent form of recreation.
可以看出，舉例法和羅列法有時可以結合使用：即用羅列法來列出例子，用例子充實羅列的說明。
3.比較法(comparison and contrast)
比較法是對兩個對象進行比較，從而進行說明的寫作手法。比較法又可細分為比較相同點(comparison)和比較不同點(contrast)兩種方法，比如：
From Paragraph to Essay
Although they are different in length (長度)， the paragraph and the essay are quite similar in structure (結構)。 For example， the paragraph starts with either a topic sentence (主題句) or a topic introducer followed by a topic sentence. In the essay， the first paragraph sets up the topic focus (主題所在) Next， the sentences in the body of a paragraph develop the topic sentence. Similarly， the body of an essay consists of a number of paragraphs that discuss and support the ideas given in the introductory (引導的) paragraph. Finally， a concluding sentence (結束句) ——whether a restatement， conclusion， or observation——ends the paragraph. The essay， too， has a concluding paragraph which ends the essay logically and satisfactorily. Although there are some exceptions (例外)， most well written expository (說明文的) paragraphs and essays are similar in structure.
可以看出，在比較相同點的時候，常用到similarly，also，too，in the same case，in spite of the difference等這樣的詞語。
European Football and American Football
Although European football is the parent of American football， the two games show several major differences. European football， sometimes called association football or soccer， is played in 80 countries， making it the most widely played sport in the world. American football， on the other hand， is popular only in North America (the United States and Canada)。 Soccer is played by eleven players with a round ball. Football， also played by eleven players in somewhat different positions (位置) on the field， is played with an elongated (拉長的`) round ball. Soccer has little body contact (接觸) between players and therefore needs no special protective equipment. Football， in which players make the greatest use of body contact to stop a running ball-carrier and his teammates， needs special protective equipment. In soccer， the ball is advanced toward the goal by kicking it or by butting (頂) it with the head. In American football， on the other hand， the ball is passed from hand to hand or carried in the hands across the opponent's (對手) goal. These are just a few of the features which distinguish (區別) association and American football.
這是一篇用比較不同點的手法寫的說明文。從文章中可以看出：however，on the other hand，in contrast，but，nevertheless等表示轉折的詞語常用來引導對不同點的比較。
4.定義法(definition)
定義法也是英語說明文中常用的寫作手法，特別是在對具體事物概念進行說明時經常使用。定義法的基本要素是定義句。英語中常見定義句的模式是：
被定義對象is所屬類別+限制性定語
可以看出，定義句中限制性定語越詳細，定義就越精確，比如：
A bat is a small mouse-like animal that flies at night and feeds on(以……為食品)fruit and insects but is not a bird.
其實，在英—英詞典中，對英語單詞的英文解釋就是定義法的典型例子。比如，看看Longman詞典對student和teacher的定義是很有意思的：A student is a person who is studying at a place of education or training. A teacher is a person who gives knowledge or skill to sb. as a profession (專業)。
5.順序法(sequence of time， space and process)
順序法是指按時間、空間或過程的順序進行說明的一種寫作手法。比如按照時間順序介紹一個科學家的生平，用空間順序闡述逐漸開發西部的重要意義，用過程順序法解釋葡萄酒的生產過程等等。
Coal
Coal underwent (經受) many changes before it became the bright， brittle (脆的)， black substance which we now use. During ancient times (在上古時代)， when the earth enjoyed a very warm and wet climate， the land was covered with large forests and big plants. As time went on， the ground changed and began to sink (下沉) a little. These very large numbers of trees and vegetables received a deposit (沉淀) of sand and clay. This layer of sand and clay pressed upon the layer beneath and prevented it from contact with air. These trees and plants received the pres sure and changed its appearance.
Generations after generations (幾世紀后)， as the ground kept gradually sinking， another layer of sand and clay was again deposited (積聚) above the layers already formed. A great pressure was thus exerted (作用) and the peat (泥煤) was changed into the black and brittle substance which is known as coal.
Coal is a kind of mineral which is formed by nature as above stated. It is an important industrial material and is chiefly used as fuel. It is very valuable in the industrial world. The place where coal deposit is called a coal mine (煤礦)。 In China， coal mines are largely found in the north-west part of the country. Shanxi is a famous province for producing coal. It has the most coal of China.
6.分類法(classification)
分類法是將寫作對象進行分類說明的一種寫作手法。比如：著名的英國哲學家弗朗西斯·培根(Francis Bacon)在其膾炙人口的《談讀書》(Of Studies)一文中就用到了分類法：
Some books are to be tasted， others to be swallowed， and some few to be chewed and digested， that is， some books are to be read only in parts， others to be read， but not curiously， and some few to be read wholly， and with diligence and attention. Some books also may be read by deputy， and extracts made of them by others; but that would be only in the less important arguments， and the meaner sort of books…
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