推荐一个学习用品作文 说明文【一】
说明文的说明性强，即实用性强。教学中，教师把学生各门学科的学习内容联系起来，课内外生活结合起来，多让学生留意自己身边的事物，显示说明文学习的指导作用，也能激发学生学习说明文的浓厚兴趣。又如第三册中，学生学过《中国石拱桥》后，仔细观察自己所在地区的某一座桥的特点，摹仿课文介绍卢沟桥的.写法，写一则２００字左右的短文。多数学生兴趣很高。
推荐一个学习用品作文 说明文【二】
说明文的客观性很强，就是语言要求准确、简明和周密。教学中，教师只要抓住一些关键词句，让学生语言的准确性、分寸，同样可以激发起学生学习说明文的兴趣。再如，讲“石拱桥”特点时，“这种桥不但形式优美，而且结构坚固。”其中关联词表示出“形式”到“质地”的主次与递进的关系，不仅形体美，而且耐用，这足以说明石拱桥的好处了。讲“赵州桥”的特点之二时“大拱桥的两肩上，各有两个小拱”。让学生画出三幅大拱上有小拱的不同位置和数量的三座桥，进行比较，体会出说明语言的真正魅力。
此外，还可以让学生掌握一些富有趣味性的说明方法，引用古典神话典故，打比方，作比较等；让学生在写说明文中恰当运用一些叙述、描写、议论、抒情等表达方式；让学生在电化教学活动中参与；让学生自己质疑问难等等，着重培养学生客观准确的写实能力，进一步激发起学习说明文的兴趣。
推荐一个学习用品作文 说明文【三】
说明文是以说明为主要表达方式用来说明事物，阐明事理的`一种文体。它通过揭示概念来说明事物的特征、本质及其规律性，给人准确的科学知识或正确思想。一般可分为实体事物说明和抽象事物说明两大类，词典、教材、论文、实验报告、产品说明书、广告、解说词及科学小品等都属于说明文。
按写作方法,英语说明文主要分为下面六种类型
1.例证法 2.定义法 3.分类法 4.因果关系法 5.比较对照法 6.过程分析法
1.例证法
Our life today depends very much on energy. For example, machines have made our life easier than it used to be. The machines use energy, and energy is needed for heating, lighting, communications, carrying goods-everything. Factories use a great deal of energy to make the things that we use and buy and sell.
这段主要是讲能源问题。第一句为主题句,概括地说出"我们目前的生活很大程度上依赖能源"。接着用举例的方法从三方面说明能源的作用。
2.定义法
An ideal teacher must have the following characteristics. He should know his subject, but he can make mistakes if he is willing to learn. His personality is as important as his scholarship. An ideal teacher must be enthusiastic. He should be a bit of an actor and he shouldn't be afraid to show his feelings and express his likes and dislikes. An ideal teacher is one who grows, learns, and improves himself along with his students.
本段的展开是通过对"一个模范教师"下定义的方法,关键词"ideal teacher"在文中多次重复,能加深读者的印象。
3.分类法
As far as political views are concerned, people fall into three categories. First are the conservative people. Conservatives are opposed to sudden or great changes. Second are the liberal people. These people are in favour of progress and reform. But their opinions often seem too idealistic. Third are the moderate people. The moderates keep everything within reasonable limits. They are more practical in this hard world. In my opinion, most people seem to belong to this group.
本段把人按政治观点分为三类:保守派(conservative people、自由派(liberal people和温和派(moderate people,并对他们各自的特征进行了简要的分析。
4.因果关系法
Of the four seasons, I like spring best. I prefer spring because it is a season of much joy and gaiety. New life bursts out everywhere. Plants wear a green coat again and colourful flowers blossom in gardens and mountains. The old come outdoors for fresh air and the young plan for outdoor activities. Life becomes so energetic and happy.
第一句为本段主题句,末句是总结句。在主题句后, 作者用了四个句子阐述自己喜欢春天的理由。
5.比较对照法
I like having a twin sister. When she's happy, I'm happy. When she feels unhappy, I feel the same. Often, I know what she's going to say. Sometimes, I know what she's thinking. I like what she likes. I hate what she hates. We like the same music, the same food and the same books.
这段采用AB交错的比较方式,阐述孪生姐妹的相同特征。这种写法较流畅自然,给读者的印象也更鲜明突出。
6.过程分析法
There are several steps to plant a tree. First, dig a hole large enough for the tree, but the hole should not be too deep. Second, put the tree in the hole so that it is straight. Third, put the earth back into the hole again. Push it down hard with your foot several times. Finally, water the tree well, as often as possible.
这段分析了植树过程中的几个步骤。全段层次分明,连接词语(first, second, third, finally的使用加强了语句的连贯性。
Exercises
例１ 请根据Wang Hua 在学骑自行车时的几个步骤，写一篇短文，说明他是任何学会骑自行车的．
参考词汇： handle-bars 自行车把手 pedal 踏板 saddle 车座
Wang Hua is learning to ride a bicycle. Let’s watch him and see how he can get on his bicycle. He put his hands on the handle-bars. He puts his left foot on the left pedal, then he pushes himself hard forward with his right leg. Now he can move on together with the bicycle and his whole body is now on the bicycle. Then, he raises his right leg over the saddle and lower himself on the saddle. Now, he is on the bicycle and stepping the pedals hard with both legs. And the bicycle is going forward.
例2
请写一篇短文介绍如何乘坐伦敦地铁．
内容提示如下：
1. 在售票处（booth购买辅币（token需30便士．
2. 在入口处将辅币投入狭孔（slot，你就可以走下地铁．
3. 在站台等车时，要站在白线以外．注意你要去的方向．不要站错站台．
4. 上下车应迅速，因为车门关闭很快．地铁内规定不准吸烟．
注意：短文的意思要连贯． 字数：100个左右．
If you want to travel by underground in London, you should first find the nearest underground entrance and buy a token for 30 pence in the booth. After you drop the token into the slot at the entrance, you can walk down the stairs. Stand back of the white line while waiting for the train on the platform. Make sure that you are on the right side of the platform for your train. When the train arrives, get on or get off quickly because the doors of the train close quickly. Smoking is not allowed in the underground.
例3
家用电脑体积下，价格低，造型优美，简单易用，使用方便，灵活；可用于计算，记事，打电话，打印信件；儿童可用它来学英语，做游戏． 你通过家用电脑能学会怎样使用微机；为将来寻找工作提供便利；电脑工作比人快数百倍；我们已经得到电脑的巨大帮助． 请根据以上内容写一篇介绍家用电脑的说明文． 字数120左右．
A Family Computer
A family computer is small. Its price is not high, and it has a good look. It can be used easily. You can calculate, make notes, call others and type letters, etc. Also, children can learn English or play games with it. Besides, you can use a family computer as a training computer. You can learn how to use an office computer, which can give you convenience to find a good job in a company. Computers can work hundreds of times faster than humans. We have been greatly helped by
computers.
例 4
请以The Importance of Trees 为题写一篇短文，说明保护森林的必要性．
1. 说明树木的主要用途：提供木材；吸水，防止水灾，旱灾；净化空气，美化生活．
2. 滥伐树木的危害；无计划砍伐造成水土流失，土壤沙化，造成水灾．
3. 每年都应植树造林，使其为人类更好服务等等．
字数：100左右．
As we all know, trees are very useful. They are of great benefit to man as follows. First, trees provide us with wood and other products. Second, their roots can allow the rain to sink in and keep the soil, so they help to prevent droughts and floods. Trees can help clean air and beautify life.
Unfortunately, nowadays in many parts of the world lots of people fail to realize the importance of trees. They have cut trees down in large numbers without a plan, which makes the soil washed away. They don’t know where there are no trees, the rain washes away the surface of the soil and this causes floods.
We ought to plant trees each year and carefully look after new trees in order not to make the forest slowly disappear. Only in this way can we make the forest serve man forever.
例 5
根据下表格提供的信息，请你推荐两本学中文的词典．
Dear Steve,
I’m pleased to learn that you and your classmates are learning Chinese. I’d like to recommend the following two dictionaries. The English- Chinese Chinese-English Dictionary is really a good one for beginners. It has 18,000 English words and 20,000 Chinese words. Besides plenty of examples, it has many notes telling you how to use a word. Xinhua Dictionary is the most popular Chinese dictionary, and it has a vocabulary of 10,000 words. It may also be useful to some advanced learners of Chinese. Of the two, ECCED is the more expensive, costing 52 yuan, and XD costs 11 yuan.
Please let me know if you want me to buy these dictionaries.
Yours, Li Yua
推荐一个学习用品作文 说明文【四】
省编初中语文第三册，重点培养说明性文字的读写听说能力，它是由第二册重点培养记叙性文字的读写听说能力的基础上，过渡而来的。况且，说明文是以说明为主的，说明也是常见、常用的表达方式之一。说明文同人们的生产、工作和生活有着密切的关系，是文学作品所无法替代的。学生的说明能力强，在社会生活的各个领域中将会发挥重要的作用。可见，学好说明文，树立明确的目标，今后能更好地服务于社会。
推荐一个学习用品作文 说明文【五】
水是灵动的，从山的顶端或蜿蜒或飞泻下来，奔向大海，很少有水停滞不前，滞留，意味着沉寂与亡，可是他却在到达大海时后平静下来。
而大山，沉稳是它的品格，敦厚的它是刚毅不屈的，宁静的色彩为它覆盖了一层面纱，可是敦厚的它却在不同的天气时令中绽放出不同的色彩，没有色彩的它却充满了寂寞与荒凉。
生命中或许就是这样，灵动的你要学习它的沉稳，稳重的.它却也不得不学习你的灵动，每个人都要变化，不变化的人就要被其他的人踩在脚底下。
每个人都想要保持原来的自己，可是竞争是残酷的，每个人都要参与进来，就需要变化，而所谓变化，就是要面对事件做出适应，应对各种突发事件，不仅是竞争，也是生存的不二法门。
有的时候，变化就是自身晋级的保障，记得有一则笑话就充分的体现了这种事实；有一个人问上司；‘这个职员那么聪明，为什么不选用他呢’上司回答他；‘我看他就不老实’而这其中的老实就是沉稳之意。
现实中就有很多这样的问题假如有一个人夸你；‘’你真聪明。‘’也许你会沾沾自喜，但是，更聪明的人会意识到：我会不会有一些地方不好？是不是不够踏实？这，其实也是一种变相的聪明。
沉稳的大山知道无人喜欢单一的色彩，于是他利用天气时令来改变自己，灵动的水知道自己要静下心来才能真正的古井无波，沉稳的人变得聪明的不在少说，而在许多电影中，敦厚的人变聪明却总是失败，事实上，真正的变聪明是还要保持自身的沉稳的，而变得沉稳更重要，只有变的沉稳才能真正的静下心来。改变自身，这才是变化的生存之道。
所谓物竞天择，适者生存。这个道理，就是让我们学习变化。
推荐一个学习用品作文 说明文【六】
叶老说过，说明文“是传授知识的文字”。美国教育家布鲁纳指出：“学习的最好刺激是对所学教材的兴趣。”根据说明文具有知识性强和中学生正处于求知欲旺盛期的特点，教师只要充分利用和挖掘现成教材中的趣味因素，一定会激发和培养学生的学习兴趣的。例如第三册中，《松鼠》、《动物尾巴的功能》，文字活泼，生动有趣；《沙漠里的奇怪现象》、《北京亚运村》，有利于激发学生强烈的求知欲；《中国石拱桥》、《祖国的大豆》文情并茂，既富有知识性，又饱含强烈的爱国激情。
