高一英语《Module 4Sandstorms in Asia》Writing学与练

高一英语Module 4 Sandstorms in AsiaWriting学与练I. Learning Aims（学习目标）:1. To revise the useful expressions in the passage.2. To conclude to structure for environmental protection.3. To do writing practice on the basis of what weve learnt.II. Difficulties and Focus（学习重难点）：1. To conclude what weve learnt in class, and learn to use them.2. To write a composition about the environmental protection.III. Learning Procedure（学习过程）：Step 1. Revise the useful sentences in the passage:1. 几个世纪以来，沙尘暴已经成为许多亚洲国家最主要的灾害之一。 2. 近些年，由于土地沙漠化，沙尘暴貌似在逐年增长。土地沙漠化是一个由于气候变化和人们滥砍滥伐造成土地变成沙漠的过程。 3. 沙尘暴是非常强烈。呼吸很困难，沙尘让我感到不舒服。 4. 沙尘暴是如此厚重，以致于我们什么都看不到，风有时是那么强烈，甚至能移动沙丘。 5. 沙尘暴有时持续一整天，交通移动很慢，因为厚厚的风沙让我们很难看清东西。 6. 当沙尘暴到达城市的时候，气象专家建议人们不要出门。 7. 如果你要出门的话，你最好戴口罩。 8. 为了防止沙漠靠近，政府正在种树。并且还打算种更多树。 Step 2. How to write a composition about sandstorms?1. Analyze the structure of the passage： Para.1: Introduction on background (_)Para.2: The causes of sandstorms (_)Para.3: The effects of sandstorms (_)Para.4: The actions we should take (_)2. Some useful expressions and link words for each paragraph：Para.1: As we all know/as it is known to all, The picture shows that/As is shown in the picture, Para.2: Sandstorms happens as a result of “desertification”, which Para.3: Sandstorms have an severe effect(on our lives).Firstly/first of all/, Second/whats more/,Third/the last but not the least/,Para.4: To prevent the sandstorm affecting and ruining our life, we should take actions. Firstly/first of all/, Second/ whats more/,Third/the last but n