【正文】 程序。因?yàn)檫@類說明文常常由具體到抽象，由表面現(xiàn)象到內(nèi)在事理，由個(gè)別推及一般，所以結(jié)構(gòu)上常先寫狀態(tài)，再寫成因，最后揭示本質(zhì)特征。說明文的寫作，還要恰當(dāng)?shù)剡\(yùn)用常見的說明方法。比如下定義。綜合說明可以更全面、具體而翔實(shí)地說明事物、事理。請(qǐng)依據(jù)空間順序，介紹你所熟悉的一組建筑群或一幅畫面；或依據(jù)時(shí)間順序，說明你所熟悉的事物的發(fā)展變化過程。教后記第四篇：說明文寫作No Pains, No GainsNowadays, it’s widely acknowledged that hard working is the only way to as a famous saying goes: “No pains, no gains.” So does students’ study in people think that a student’s success in university study follows the same pattern as that of farming, which is characterized by sowing the seeds, nurturing growth and harvesting the rewards’ far as I’m concerned, I am in favor of the start with, like farmers sowing seeds in the soil, students need to try every effort to input knowledge into their minds as much as example, a proficient farmer knows a good harvest depends on spring , adequate knowledge input paves the way to good academic grades and future excellent student will listen to their teachers attentively and read extensively after class in order to enrich their , just as the growth of crops needs nutrition, the consolidation and mastery of knowledge also requires nourished materials, crops can’t grow healthily and , students who idly wait for success or resort to dishonest means, such as academic plagiarism and examination cheating will end up with failure or but not least, diligent farmers will definitely have a good harvest after sowing the seeds and nourishing the , with rich knowledge and years of hard working, college students cannot only bee knowledgeable people, but can also pass all the examinations with flying colors, get good grades in petitions and stand out from job a word, success is the fruit of perspiration.第五篇：說明文寫作口訣和說明文寫作口訣和范文口訣：說明文寫作注重“序”，依據(jù)信息來動(dòng)筆，時(shí)間、空間和邏輯，“三種順序”選其一。參照模式：順序說明法：These are several reasons why I decided to study in this of all, the students in this school are , there is a big library and 3 big puter , there are many finest , this school is not far from my won’t take me long time to go to 。在主題句后，作者用連詞because引出了句子來闡述自己喜歡寵物狗的理由。將用過的課本留給下屆學(xué)生。請(qǐng)你根據(jù)一下提示，以The Changes in My Hometown 為題，用英語寫一篇不少于90詞的短文?，F(xiàn)在：：住房寬敞、明亮；許多人有自己的汽車。The changes in My HometownIn the past, my hometown was very lived a poor houses were old and was very serious, and there was rubbish traffic was not convenient, so few visitors came great changes have taken place in my environment has bee more mountains have turned greener, the rivers clearer and the sky are trees, flowers and grass live a better houses are larger and people have their own year, thousands of people from all over the world e to visit our ’m sure my hometown will bee better and better in the 、世界上已有許多國(guó)家發(fā)現(xiàn)了新型H1N1流感病毒(H1N1 flu virus)，人感染該病毒后會(huì)出現(xiàn)咳嗽、發(fā)燒、(21世紀(jì)中學(xué)生英語報(bào)正在舉辦征文活動(dòng)，請(qǐng)你給該報(bào)投稿，描述感染該病毒的癥狀并談一談為了預(yù)防該病毒我們?cè)撛趺醋?，：cough, have a fever, feel tired, prevent,四、如今隨著人們生活水平的不斷提高，轎車的家庭擁有量越來越高，道路交通安全已成為一個(gè)嚴(yán)重的社會(huì)問題。（要求80—100字）Nowadays, more and more people drive to work instead of going by accidents can be seen almost every my opinion, some people don’t obey traffic either drive too fast on the road or go on driving when the traf