初中英语说明文思维导图（精品20篇）

There is a library in our school. It is open from eight oclock in the morning till half past five in the afternoon. We often go there to borrow books.

We can borrow five books at a time and keep them for two weeks. If we cant finish reading them in two weeks, we can go and renew them. The librarian is always ready to help the students. If the book you want is out, she will help you to choose another one. We always take good care of the borrowed books. We can also look through newspapers and magazines in the reading-room, but we are not allowed to take them out of the reading-room.

在教我的老师中，有亲切和蔼的语文老师，有严肃认真的数学老师，有活泼开朗的音乐老师，还有幽默诙谐的体育老师……这些老师都无私地教给我们各种知识，让我们在学习的海洋中自由地翱翔。最让我难忘的是教我英语的蒋老师，她不仅让我爱上了英语，更让我成为一个勇于克服缺点的人。

刚上一年级时，由于我在换牙，口齿不清，所以在英语课上根本就不敢进行口语练习，生怕同学们笑话我“大舌头“。当时同学们在老师的带领下，都能流利地用英语谈话，而一句简单的“my name is yuxiaolin”我都说不出来。面对老师的提问，我总是把头低下，心想：别叫我，千万别叫我!开始，同学们都踊跃举手，所以蒋老师也就没有发现胆小的我。

可是随着时间的推移，老师终于在一次口语练习的时候叫到了把身体都快溜到课桌下的我。我在大家的注视下，红着脸站起来了，我感到自己的眼泪快要流出来了。“别着急，说出你的名字。”老师的语气是那么柔和，可是我说不出口。时间就在我的窘迫中渐渐流逝，终于老师打破了沉默，“我知道你的名字，老师们都夸奖你是个学习认真的孩子。同学们，是不是呀?”同学们都不假思索地应和：“是!”听到这些，我的眼泪不由自主地流下来了。蒋老师带领大家一起说出：“my name is yuxiaolin! my name is yuxiaolin!”奇怪，我竟然不害怕了，也跟着同学们一起说连续说了两遍，就在大家都停下时，由于惯性，我又说了“my name is yuxiaolin”。“你真棒!”老师竟然祝贺我，“好孩子，你能再大声说一遍吗?” “my name is yuxiaolin!”我终于敢张开嘴了，心里也仿佛卸下了一块大石头。同学们没有嘲笑我，老师没有批评我，耶!我不怕了!

从那以后，不论什么课，我都勇敢地举手发言了，胆小的毛病终于摆脱了。在英语课上，我的积极性更高，不仅敢发言，而且还愿意和老师、同学们对话，英语的口语交际能力明显提高了。当初那节英语课一直留在我记忆的最深处，蒋老师如春风般的话语时刻在我耳边响起。

The traffic problem is one of themost serious problems in my hometown. Recently, more and more people have privatecar, but the roads are so narrow that we have to fight against the heavytraffic when we go out. Especially during the rush hours, cars and buses areunable to move. To make things worse, many people are killed in the trafficaccidents. How miserable it is!

在我的家乡交通问题是最严重的问题之一。现在越来越多的人拥有私家车，但道路却是如此的狭窄，所以我们出门的时候都必须和交通拥挤对抗。尤其是在繁忙时间段，汽车和公共汽车都动不了。更糟的是，许多人在交通事故中丧生。那是多么悲惨的啊!

For the sake of our life andsecurity, some measures must be taken to change the present situation. In thefirst place, as there are a great many cars, we should control the number ofprivate cars and vehicles and use the public transportation more often.Secondly, the government should widen the roads and build more flyovers, so asto ease the traffic pressure and reduce the traffic accidents. In addition, theundergrounds and light rails should be constructed, so that we can have morechoices when going out and do not have to worry about the traffic jams in thefuture.

为了我们的生命和安全起见，我们必须采取一些措施来改变现状。首先，因为有很多车，所以我们应该控制私家车的数量，更经常使用公共交通工具。其次，政府应该拓宽道路，建造更多的立交桥，以缓解交通压力，减少交通事故的发生。此外，应构建地铁和轻轨，这样我们将来外出时可以有更多的选择也不用不必担心交通堵塞。

I believe the traffic problem couldbe solved if we devote our actions to them.

我相信如果我们采取行动的话交通问题是可以解决的。

我的假期

I’m going to the sun on my holiday. I will go there by a spaceship. I will take a big blue spaceship。

then I’ll pilot the spaceship to the sun. the sun is very hot. So I put on the super-shirt. In the morning, I will have some sun burger for my breakfast.

At eight o’clock, I will play with my friends there. they are super dog and super girl. Super dog is white and black. Super girl is very clever. Super girl and super dog like to play with me. So I play with them for forty minutes. then I do my homework in my little red room on a small blue table. After my home work, I will have my lunch. I will eat sun salad. I will make some red toy bear to the sun babies. I will have red juice, red fish and red rice. All the things are red. then I need a lot of water on the sun because the sun is too hot. So I will walk to the spaceship. I’ll pilot the spaceship to the earth.

[初中一年级英语上册作文

Today is the beginning of seven, I told my cousin went to the big red flag in the town of Villa Zhuo watched a wonderful "Spring Festival acrobatics extravaganza." After we came to find a place performing acrobatics, find a place to sit, then waited patiently show began.

"Show began," I do not know who shouted. We immediately recovered.

The first program, the small monkey riding old goat rope walk. I saw the old goat monkey carrying a small step by step down the rope, hey, before. Really amazing ah! The next program more exciting! For example: a tightrope, tigers jump through hoops, lions and tigers slide across the beautiful swing, bears do sports, air swing ...... and so this "Spring Festival acrobatic extravaganza," the protagonist is mainly animals.

This "Spring Festival acrobatics show" really meaningful ah!

今天是年初七，我跟表姐一起到大冲镇的卓旗山庄观看了一场精彩 “贺新春杂技汇演”。我们来到之后，先找到表演杂技的地方，找个位置坐下，再耐心的等待着表演开始。

“表演开始了”，不知道是谁大喊一声。我们立刻回过神来。

第一个节目是，小猴子骑老山羊走绳子。只见老山羊背着小猴子一步一步地走在绳子上，嘿，过了。真令人惊讶呀！接下来的节目更精彩！比如说：走钢丝、老虎跳火圈、狮子老虎跨美人滑秋千、狗熊做运动、空中秋千……等等 这 “贺新春杂技汇演”的主角主要是动物们。

这次的“贺新春杂技汇演”真是有意义啊！

Before I entered the middle school, I felt so worried about the life in

middle school, because my cousin told me that I would have to compete with so

many excellent students. Now I get used to the life, I learn many subjects from

Monday to Friday. Though I always meet the difficulties in learning the new

knowledge, I get help from my teachers and classmates. I am not afraid of the

middle school life again, I am so excited to learn new things every day. In the

future days, I will meet many challenges, I believe I can get over them. Life in

middle school has happiness and sorrow, they fulfill my life.

My school is very beautiful. It is Nanhai Experimental School. There are

three tall buildings in our school. They all have five floors. In the teaching

building， the P.E.room is on the first floor. The library is on the second

floor. The science rooms are on the third floor. The computer rooms are on the

third floor and the fourth floor. The music rooms are on the third floor and the

fourth floor. My class room is on the fifth floor. I am in Class9， Grade 6.

There are five gardens in our school. In the gardens there are many beautiful

flowers， grass and trees. There is a big playground in my school.

I like my school， because my school is very beautiful.

Dear

Editor,

Recently

graffiti has become more noticeable in my college. I feel quite annoyed at them,

especially when some of my classmates praise them as a kind of so-called art.

Confronted with this impolite phenomenon, I cant help asking myself: what is

wrong with todays teenagers?

In

my opinion, graffiti is a form of vandalism. They are a mess and are ugly to

look at. Meanwhile, walls are public places, and they should not be used to

express personal views and feelings.

I

really think vandalism should be stopped, and those who refuse to stop this bad

practice should be punished. We should clear away these ugly expressions and

drawings so that our college may return to its true self--a clean, quiet place

for study, teaching and research.

Yours,

Li

Ming

Have you ever had a dream about your splendid future or imagined something ueal but interesting or meaningfulTell your closet friend about it now. My Dream I have a dream that I am always young. Then I will have enough energy to do everything whenever I want. Moreover, I dont have to worry about the old age during which I even cant take care of myself. I know that my dream will not come true. However, I think it is lucky that I am young now. So I will treasure my time, enjoy my life and try my best to do everything well.

我有一个梦想就是我永远年轻，然后我就会有足够的精力去做我想做的事情，而且，我就不会因年老无法照顾自己而忧虑。我深知我的梦想不会实现。然而，我很幸运，现在我很年轻。 因此，我一定要珍惜青春好时光，享受生活，并且尽最大努力把每件事情做好。

[我的梦想英语作文三篇

于我们而言，正确地认识我们本身的优势和不足是非常重要的，其原因在于它有助于我们提高自身，我们应该自省并且学会认识我们自己是谁

It is important to know our good and bad points because this knowledge will help us to improve ourself. We should examine ourselves and learn who we are.

在自我认识当中，最重要的就是认识自己的优势和不足。举例而言，我是一个身体健康的人，由于这个原因，我可以非常努力地去工作。同时我乐观、谦和并且有礼貌。这些是我的优势。同时，我也存在一些不足。首先就是我脾气有点倔，而且缺乏耐心。在一些时候我也会犯懒，也许有时整天在看电视和吃垃圾食品。可是有这些缺点，我却并不觉得怎样羞愧，因为我了解到了他们，促进我提高了自身

Above all, we should recognize our strengths and weaknesses. For example, I am healthy and fit, so I can work hard. Im also optimistic, humble and polite. These are my strengths. However, I also have weaknesses. For one thing, Im stubborn and a little impatient. Im sometimes lazy as well and can spent a whole day just watching TV and eating junk food. Im not ashamed to admit these bad pints. Knowing what they are lets me focus on improving myself.

编辑点评：这篇文章用词准确、精彩，并且能有自己的观点，是一篇非常优秀的校园作文。我们在平时的学习中，不但要常写常练，还要经常阅读一些好文好句，来提高自己的写作水平。

Dear Frank:

Long time no see. Howare you recently?

I am very happy toreceive your letter and glad to hear that you will come to my city and staywith us for a few weeks. My house is on theHeaven Streetwith five rooms, one ofwhich is living room, two bed rooms, the other two are kitchen and bathroom. Ihave cleaned a guest room for you. There is a bed, a sofa and three chairs inthis 25 square-meters room. If this room is not suitable enough, please writeto me and I will prepare another one for you. There is a bus stop near myhouse, and you can take number 1 bus to the cinema, number 2 to the supermarketin where you can always choose the commodities you need.

If you have otherrequests, please feel free to write to me. I will try my best to meet yourneeds. I wish you can come soon and have good days here.

Sincerely yours,

Jaz

亲爱的富兰克

很久没见到你了，近来怎么样？

我很开心收到你的来信，听到你将要来我这里和我待几周我很高兴。我家住在天街，有五个房间，其中一个是客厅，两个卧室，另外两个是厨房和浴室。我已经帮你把客房打扫干净了。这个25平米的房间有一张床，一张沙发和三把椅子。如果这间放不合适的话请写信告诉我，我会给你准备另一间。我家附近有一个站牌，你可以乘坐 1路去电影院，2路到超市，在那里你可以买到你需要的商品。

如果你还有其他要求，请随时写信告诉我，我会尽量满足的你需求。希望你能快点来这，在这里度过愉快的日子。

杰斯

[初中英语作文给朋友的回信

I have several friends. Wang Lin is my best friend. He is eleven yearsold. He comes from Beijing.Wang Lin came here three years ago. He came with his parents. His father is an engineer and his mother is a middle school teacher. He has no brothers or sisters. He is the only child of his parents.We are classmates at school, so we see much of each other.He is fond of English and I am good at maths. We always help each other. Both of us have made great progress in our studies.We have made up our minds to study harder and win success in our studies.

[我的朋友英语作文5篇

January 21

It was cooler than yesterday. One of my father’s friends invited me to eat red bayberries. You must know it is unusual. Because we will climb the hill to eat red bayberries. There is no chance to eat red bayberries in the hill for the people who don’t live in Beijing. On the hill, you can breathe the fresh air, you can listen birds singing and you can eat red bayberries. It was enjoyable. It is said there are wild pigs in the hill. What a beautiful natural.

January 22

Today I found time was a cruel thing. Whatever man is, time always goes on. It won’t stay to wait for somebody. You can’t use anything to exchange time. Time is also a fair thing. Although you have a lot of money or you enjoy high reputation, time won’t leave them more. Today I found I hadn’t enough time. Although I have 50-day holiday, but I found I had a lot of things to do. I had a lot of homework to do and I had something necessary to do.

January 23

I have rested for 10 days. In these days, I felt very bored. I didn’t know to do what. Although I had a lot of things to do, I felt uncomfortable. I was ill because of the cold weather. I was tired, sleepy and had no strength. My parents are worried about my health. in fact, it didn’t matter. I was always in the room with air-conditioner and opened it in a low temperature. So when I went out, the high temperature disagreed to me. Finally, I was ill.

Today was Sunday.

My parents were free, too.

I got up at 7oclock, because my families planed to go to the zoo.

After the breakfast, I took the camera and went to the station together with my parents.

It was already 9oclock when we arrived at the zoo.

There were so many monkeys, tigers, lions, wolves and other animals in the zoo. We took many photos in the zoo with the animals. I will show these photos in my class after they were printed. The time passed so fast, we left the zoo at 1oclock PM. I was so happy today. Now I feel very tired and I will go to bed early tonight.

[初中英语作文：去动物园

Remember, I particularly like the puppy, always wanted my mother to buy me a.

One day after school, I just entered the door, my father was happy to say to me: "You do not want to keep the dog, my mother bought you a ... ..." Dad did not finish, I interrupted his words , "Great", and then I immediately looking for a home in the East looking for, that is, did not find my puppy. My father see me looking for something to know that I was looking for a puppy, then pointed to the phone below said: "where it!" I looked at the location of my father said, I saw a lovely puppy is obediently squatting On the ground! I hold the dog asked his father: "We give the dog what name is it?" Dad immediately said: "It is called joy!" I thought for a moment before saying: "Well.

"Huanhuan" whole body like snow as white, the distance to see, really like a pompon. Round face with a pair of agate-like eyes, from time to time flickering, look at the wizard effort. Its two soft ears, always bowed. "Huanhuan" also often put the red blood out of the tongue, licking Tim slightly raised his little nose, as if in the massage.

"Huanhuan" and I am most affectionate, as long as it is happy, will use claws to rub my legs, if it is not happy ah! Its eyes tearful, as if someone hit it or call it like.

"Huanhuan" it is not only lovely and very naughty, take the last time to say it, my mother and take it out for a walk, go home, it suddenly rushed to us, ran into the lawn to roll, that way Naughty!

Sometimes it made me angry, and I ignored it, when it was flashing in her eyes, as if to say to me: "little master, I was wrong." I see it the poor look, but also can not help but pick up it, comfort it.

This is my naive puppy that day!

Since the first day of my winter vacation, I’ve decided to make it a

valuable and enjoyable one. I made a plan to finish my homework within the first

week, and after days of hard working, I actually got all my assignments done a

day earlier. I am pretty proud of myself for not —as usual —hang out with my

friends until the last few days of my vacation and rush through my homework.

In the rest of my winter vacation, I made up my mind to improve my reading

skills. I’ve had tons of books that I simply bought and put them on my shelf,

wishing some day they would be finished themselves. But this time, I realized I

was not trying my best last term and decided to make some change. I finished a

couple of novels and watched some classic movies, I also went to a library to

borrow some new books for next term. The more I read the more enthusiastic I

became, and now I’ve developed my reading skills a lot.

Another event in my winter vacation is that I went to hiking with my

parents. It was a warm, sunny day, which is pretty precious during winter time.

I can still remember the scene when we drove

ILoveWatchingCartoons

Cartoonismyfavoritething.EverydaywhenIgethome,thefirstthingIdoistoopentheTVandwatchthecartoons.Maybesomazuowenldthinkthatwatchingcartoonsisasonaivething,butIdontthinkso.Cartoonsrefertomanythings,containingsomeprofoundthought,whichoftenmakesmethinkaboutitalot.

Toconclude,Ilovewatchingcartoons.Cartoonsgivemehappinessandcausemetothinkdeeply.

This is my first impression of Mr.Lu Xun.He was "Head-bowed as a willing

ox" day and night to change the destiny of the nation rather busy.Frail,he was

literary giant.Mr.Lu Xun humor,and no lack of cordial.He hated the dark as the

devil,but a lot of the benefit of others,to play down their own.In my opinion,he

is ordinary and great people!There is a sub-heat,made a spectrophotometry."Mr.Lu

Xun,Lu Xun article will always be the history of Chinas most dazzling bright

light.

Guo Jingming is a famous writer in China. I think all the students have

known him. He is also my favourite writer. He was born in 1983. He has published

many books, such as "Visionary"," The Summer Still Doesnt Come"…These books are

very touching.

I often cry and shed bitter tears while I am reading his books. I thought

he was a pessimistic person but now I think he is sensational person. He doesnt

want to grow up judged by this. I think he is pure and naive. Although he is a

writer, he studies well.

I admire him very much. His words are common, but they make people feel

quite close to him. I hope he can write better articles and I want to be a

writer like him when I grow up.

With the explosion of population in the world, more and more poisonous waste is produced. As a resuit, a lot of rivers and lakes are polluted. In some areas, the air also becomes dirty and harmful. Consequently, animals and plants are endangered. And peopies health is greatly affected.

Fortunately, more and more people have realized the serious situation. Many countries have passed laws to prevent the environment from being further polluted. People are working hard to find ways to keep the earth clean: they treat waste gases, protect water sources and purify waste water. Definitely, controlling the increase of population is one of the most efficient ways.

However, in future more efforts will be needed to win the battle against pollution, The laws controlling pollution must be strictly enforced, And above all, attention should be paid to the education of the people so that everyone will show his concern about environmental protection.

一、什么是说明文？

说明文是以说明为主要表达方式来解说事物、阐明事理而给人知识的文章体裁。说明文实用性很强，它包括广告、说明书、提要、提示、规则、章程、解说词、科学小品等。

二、说明文分类

按照不同的标准，说明文可分不同的类别：

依据说明对象与说明目的的不同，把说明文分为事物说明文和事理说明文两大类。事物说明文的说明对象是具体事物。通过对具体事物的形状、构造、性质、特点、用途等作客观而准确的说明，使读者了解、认识这个或这类事物,例如：《中国石拱桥》、《苏州园林》等。事理说明文的说明对象是某个抽象事理。将抽象事理的成因、关系、原理等说清楚，使读者明白这个事理“为什么是这样”是其主要目的，例如《大自然的语言》、《奇妙的克隆》等。 根据说明语言的不同特色，把说明文分为平实的说明文和生动的说明文两种。

根据说明文的体系不同，还可以分为自然科学类和社会科学类。

三、说明文的特点

以说明为主的表达方式是说明文与其他文体的主要区别。在各种文章样式中，说明文体是一种客观的说明事物,阐明事理的一种文体。说明文的特点是“说”，而且具有一定的知识性。这种知识，或者来自有关科学研究资料，或者是亲身实践、调查、考察的所得，都具有严格的科学性。

说明文的语言特点

准确、简洁、平实是说明文语言的主要特点。当然，说明文的语言风格也是多种多样、各有特色的，有的以平实见长，有的以生动活泼见长。以此为据，可概括为平实说明和生动说明两种方式。一般来说，以说明事物为主的说明文，重在抓住事物的特点，用简明的语言平实地加以说明。而科学小品，讲究趣味性、文艺性，须要作必要的生动、形象的说明。

四、说明文的顺序

1.时间顺序。时间顺序是文章常见的记叙、说明顺序之一。 即按照事理发展过程的先后来介绍某一事物的说明顺序。凡是事物的发展变化都离不开时间，如说明生产技术、产品制作、工作方法、历史发展、文字演变、人物成长、动植物生长等等，都应以时间为序。 时间顺序在文章中使用恰当就可以起到画龙点睛的效果，说明清楚，使读者一目了然，所以在文章时间顺序也是一种独特技巧。 2.空间顺序。空间顺序。即是按事物空间结构的顺序来说明 ，或从外到内，或从上到下，或从整体到局部来加以介绍，这种说明顺序有利于全面说明事物各方面的特征。一般说明某一静态实体（如建筑物等），常用这种顺序。；《故宫博物馆》按照先总后分的顺序，先概括说明故宫建筑物的总体特征，然后再具体介绍太和门、太和殿、中和殿、保和殿、乾清宫……御花园，而在介绍每一座建筑物的时候，则又按照先外后内、先上后下的顺序。

3.逻辑顺序。逻辑顺序即按照事物、事理的内在逻辑关系，或由个别到一般，或由具体到抽象，或由主要到次要，或由现象到本质，或由原因到结果等等一一介绍说明。逻辑顺序主要分成12种——从原因到结果、从主要到次要、从整体到部分、从概括到具体、从现象到本质、从具体到一般、从结果到原因、从次要到主要、从部分到整体、从具体到概括、从本质到现象、从一般到具体。不管是实体的事物，如山川、江河、花草、树木、器物等，还是抽象的事理，如思想、观点、概念、原理、技术等，都适用于以逻辑顺序来说明凡是阐述事物、事理间的各种因果关系或其他逻辑关系，按逻辑顺序写作最为适宜。

五、说明文的结构

说明文的结构一般有两种：总分式，事物说明文常用的结构形式：（1）总——分，如《苏州园林》（先总体的概括，再分说。结尾没有总结性的语言），（2）总——分——总，如《故宫博物院》；递进式，各层之间的关系是由浅入深、由表及里、由现象到本质。各层之间的关系为递进关系。如《向沙漠进军》。

六、说明文常用的说明方法

(1)下定义。用简明的语言指出被说明对象的本质特征。从而更科学、更本质、更概括地揭示事物的特征/事理。下定义能准确揭示事物的本质，是科技说明文常用的方法。

(2)分类别。把被说明对象按一定的标准分成不同的类别，一类一类地加以说明，叫分类别。如《食物从何处来》把生物获得食物的途径和方法划分为"自养"和"异养"两类，然后分别说明。

(3)举例子。举出实例进行说明，使内容具体化，叫举例子。《中国石拱桥》通过介绍赵州桥和芦沟桥，使人们具体了解中国石拱桥的特点，用的就是举例子的说明方法。

(4)列数字。用准确的数据说明事物的某些方面，这种方法叫列数字。如"笔全长13.5厘米，笔身约占3/5，笔帽约占2/5。顶端的活动小枢纽能自由伸出和缩进，像个乌**，长0.7厘米，笔挂长3.9厘米。"(《我的圆珠笔》)

(5)作比较。就是通过比较说明事物和事理。例如《苏州园林》中，用苏州园林建筑的不对称与我国古代宫殿和近代的一般住房的对称进行比较，突出苏州园林的自然之美。

(6)打比方。说明某些抽象的或者是人们比较陌生的事物，可以用具体的或者大家已经熟悉的事物和它比较，使读者通过比较得到具体而鲜明的印象。"石拱桥的桥洞成弧形，就像虹。"形象准确地说明了石拱桥的外形特征，这句话就用了打比方的说明方法。

(7)画图表。为了把复杂的事物说清楚，还可以采用图表法，来弥补单用文字表达的缺欠，对有些事物解说更直接、更具体。使读者直观，一目了然地了解事物的特征。

(8)引资料。资料的范围很广，可以是经典著作，名家名言，公式定律，典故谚语等。

(9)摹状貌。为了使被说明对象更形象、具体，可以进行状貌摹写，这种说明方法叫摹状貌。（和描写要区分开，两者虽一样，不过是在不同的文体中的。）

(10)作诠释。 从一个侧面，就事物的某一个特点做些解释，这种方法叫诠释法。

七、简单说明文的写作方法

1、必须抓住特征。所谓特征，就是指事物所具有的独特的地方。任何事物都有各自的特征，这也是它区别于其它事物的主要标志《活板》介绍我国古代的印刷术，就当时说："活板"这种印刷术的主要特征是"活"。因而文章在介绍中自始至终抓住了这个特征，把活板的印刷历史、制作方法和使用方法，介绍得十分清楚，使读者有了确切的了解。能不能抓住事物的特征，主要取决于作者对事物有没有细致的观察和深入的研究。

2、合理安排顺序。事物大多是具有复杂性的，必须从多方面去介绍，才能讲清楚它的特征。依据事物本身固有的条理，是将说明文写得条理清楚的根本保证。事物本身固有的条理顺序，一般说来，有以下几种：

(1)空间顺序。是指按照物品的空间方位进行说明。或由远及近，由近及远;或由内到外，由外到内;或由上到下，由下到上;或由前到后，由后到前等等。说明物品的形状、构造，一般采用这种顺序。

(2)时间顺序。是指按照时间发展的先后进行说明，先发生的先说，后发生的后说。说明事物发展变化的过程，往往采用这种顺序。如《看云识天气》中有一段描写天气的变化，由晴转阴，由阴转雨(雪)有时间先后的顺序，天空的云随着这个时间的推移，也变化着不同的形态：卷云--卷层云--雨层云。就是按时间先后的顺序写的。

(3)逻辑顺序。是指按照事物内部的联系和人们认识事物的规律来安排说明的顺序。由

整体到部分，由主要到次要，由浅入深，由简到繁，由具体到抽象，由现象到本质等，因此，说明文作者在考虑文章思路时也必须符合这些认识规律，才能使自己的文章正确地反映人们对客观世界的认识过程，同时又能适应读者的接受能力和欣赏习惯。如《大自然的语言》说明物候现象来临的因素，共写了三段：第一段说，"首先是纬度"，第二段指出，"经度的差异是影响物候第二个因素"，第三段指出，"影响物候的第三个因素是高下的差异"。这个层次顺序的安排，就是由主次决定的。

3、选择说明方法。说明事物的方法很多，我们选择什么样的说明方法要根据自己的文章而定，因为运用一些说明方法的目的，是为了更正确地说明事物。

4、语言描述准确。说明文的语言，和其它文体一样，都讲究用词准确，表述明白，这是写好各类文体章的基本要求。但是，说明文作为一种独立的文体，对文章的语言又有自己的特殊要求。说明文是以介绍知识为主的一种文体，无论是解说事物，还是阐明事理，都必须讲究科学性，按照客观事物的本来面目，老老实实地说清它们各自的特点和本质，既不允许虚构夸大，哗众取宠，也不允许艰深晦涩，佶屈聱牙。这样，说明文的语言就应该简洁明了，质朴无华，也就是语言要"平实"。