1、Unit 4 Astronomy:the science of the starsSection Guided Writing解决问题型说明文写 作 技 法 指 导 文体指导解决问题类说明文，就是针对某一问题提出具体的解决方法并进行适当论述，给读者提供知识，使之掌握解决问题的方法。此类作文的篇章结构如下：第一部分：提出问题或阐述某件事情的重要性；第二部分：列举说明处理某事的方式或解决某个问题的途径；第三部分：针对提出的解决方法进行简要评价，也可提出个人建议或选择，并阐述理由。亮点句式A问题1One of the biggest problems facing the world today i
2、s global warming.当今世界所面临的最大问题之一是全球变暖。2As we all know，the global water shortage is becoming increasingly severe mainly due to global warming.众所周知，主要由于全球变暖，全球水资源短缺问题正变得日益严重。3There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming.毫无疑问，地球正变得
3、更加暖和，全球变暖正是人类活动所致。4In order to avoid traffic jams，I strongly suggest some effective measures be taken.为避免交通拥堵，我强烈建议采取一些有效的措施。B解决方法1We should work together to fight against pollution and make our environment safer and more comfortable to live in.我们应该一起努力同污染作斗争使我们的环境更安全更适宜居住。2There is no denying the f
4、act that it is a serious problem；the government should take strong measures to deal with it.无可否认，这是一个严重的问题，政府应该采取有力措施来解决它。3The most important thing is that people should be made aware of the importance of environmental protection.最重要的是应让人们意识到保护环境的重要性。C结论1If we are more environmentally friendly，the e
5、arths temperature may not rise too much.如果我们多善待环境，地球温度就可能不会上升那么快了。2As far as Im concerned，its everyones duty to protect the environment.依我看来，保护环境是我们每个人的责任。3Its high time that we did something about it.是我们该做些事情的时候了。满 分 佳 作 构 建 写作任务随着科学技术的发展，人类太空旅游将不再是遥远的梦想。假设你是李华，对太空探索极感兴趣，现在请你写一篇英语短文，设想在今年暑假去太空旅游，如何
6、克服失重条件下吃饭和喝水的问题。词数：100左右。审题谋篇体裁解决问题类文章话题太空旅游 时 态一般现在时人 称第一人称 结 构首段：提出失重条件下吃饭和喝水的问题中段：分析和解决吃饭和喝水的问题尾段：总结遣词造句.对接单元词汇1 面对2确定3解决4太空旅游5重力6飘浮be faced withmake suresolvetravel in spacegravityfloat.巧用单元句式语法(一)完成句子1如果我去太空旅游，会有一个问题。If I went to travel in space，there 2我可能会面临一个问题。I might a problem.3在外太空，重力会很弱。I
7、n outer space，would be a problembe faced withthe gravity is very weak4食物会到处飘动。The food 5用这种方式，这个问题可以被解决。The problem would be solved in this waywill float around/about(二)句式升级6用定语从句连接1、2句7用so.that.连接3、4句If I went to travel in space，there would be a problem I might befaced with.In outer space，the gravi
8、ty is so weak that the food will floataround/about.8用“only状语”改写第5句Only in this way would the problem be solved.妙笔成篇【参考范文】If I went to travel in space，there would be a problem I might be faced with：how to eat and drink in outer space.I would have to take all my foods with me if I went to space travel
9、，but in outer space，the gravity is so weak that the food will float around if it is solid.I must make sure that it is specially made as liquid space food.It could be put in a tube and then I would be able to suck it more easily.Perhaps I would use a straw to eat it.In my opinion，I believe that only in this way would the problem be solved.I might have a happy visit to space in that way.点击右图进入 英 美 文 化 欣 赏 Thank you for watching!