廣東省陽東廣雅學校高中英語《Unit4 Astronomy the science of the stars》教案（7）新人教版必修3.doc

the seventh period writingteaching goals 教學目標ability goals 能力目標enable ss to know how to write a short article explaining one of the problems teaching ways教學方式【單元寫作呈現(xiàn)】 write a short article explaining one of the problems that you might have on the moon. set out what you should do to overcome this difficulty and have a happy visit.【寫作分析】 本單元要求寫一篇說明文，為探訪月球過程中可能遇到的某個問題提出解決辦法。體裁屬于說明文寫作（expository writing：solving a problem）。本單元的課文和討論部分已經(jīng)提到類似的問題，例如月球表面的重力會造成行走困難等等。寫作部分在此基礎上進一步展開話題，要求學生首先解釋說明人們在月球上可能會遇到的某種困難，然后闡述相應的解決辦法。寫作過程中應注意把握說明文的結構，選擇恰當?shù)恼f明方法，并體現(xiàn)說明文語言的特點?！緦忣}要素】寫作時應注意以下幾點：1. 確定文體：這是一篇解決問題的說明文，寫作重點在于說明如何解決問題（how）。2. 主體時態(tài)：文章應以一般現(xiàn)在時為主。3. 內容要點： 提出問題； 列舉解決問題的途徑； 給出簡要評論、總結或預測。4. 注意說明文內容的科學性、結構的條理性、語言的準確性。【思路引導】 本題屬于典型的problem-solution（解決問題）型寫作，此類文章寫作的基本提綱模式是： 第一部分：開篇。提出問題(problem)，明確需要解決的問題是什么，即對現(xiàn)狀、形勢、困難等進行描述，并說明解決問題的緊迫性和必要性。第二部分：主體。分析問題和解決問題，即提出解決問題的辦法(solution)，可使用列舉、闡釋等說明方法。 第三部分：總結。對提出的解決方法進行簡要評價(evaluation)，列舉其優(yōu)點，或者說明自己的喜好、選擇，也可對該問題的前景做出進一步預測?！菊Z言積累】1. problems: . is really a problem. one of the difficulties is .it is difficult / hard to .it is of great importance for us to .it has become the biggest concern of .unless we take effective measures, it is likely that .2. solutions:we have figured out many ways to .only in this way can we .to solve the above-mentioned problem, we must .firstly . secondly . finally .there might be two solutions. the first one is to .we can solve the problem by doing .3. conclusion:in a word / to sum up .by doing . you will .with concerted efforts we will pull through the difficulties.with the help of . we can manage to overcome these difficulties.we must find out new ways to cope with the problems that would arise.【參考范文】 if you are really planning a trip to the moon, youd better pack something to keep you warm, and also something to keep you cool. because the moon has no atmosphere to block some of the suns rays or to help trap heat at night, its temperature varies greatly between day and night. that will be a great challenge to the human system. to deal with this problem, scientists have invented spacesuits with internal heaters and cooling systems. with this technology, scientists can create a surface zone with the relatively constant temperature. you will find that very helpful on your trip to the moon. homeworkwrite a short article explaining one of th