Unit 5 A delicate world Starting out& Understanding ideas 课件-2022-2023学年高中英语外研版（2019）选择性必修第二册

Unit 5 A delicate world Period 1 Starting out & Understanding ideas Learning objectives 1. Analyse the reasons why the changes of Aral Sea’s satellite images happened; 2. discuss the actions we can take to protect our earth; 3. realise that we should be in harmony with nature. Aral Sea 威海 The water area is shrinking. The water area will be smaller. Discuss the reasons why the changes happened. Starting out Watch the video and answer the questions. 1) Are humans part of Earth’s ecosystems? Why? What is ecosystems? Starting out Watch the video and answer the questions. 1) Are humans part of Earth’s ecosystems? Why? It’s vital for our human beings to take action to protect our Earth. Yes! Humans are part of Earth’s ecosystem. We should be in harmony with our environment. Q: What can we do to protect our environmrnt? plant more plants collect waste paper or other waste things for recycling prevent those factories from pouring waste water into rivers,lakes and fields. mustn’t pick the flowers or step on the grass in public the government should let people fully realize the importance of environment protection through education reduce the use of plastic bags reduce the use of electrical appliances less open car to work or travel. （2022年·全国卷）你校将以六月八日世界海洋日为主题，举办英语征文比赛，请你写一篇短文投稿。 内容包括： 1. 海洋的重要性； 2. 保护海洋的倡议。 注意：1. 词数100左右； 2. 短文的题目和首句已为你写好。 Gener: A Letter of proposal(倡议信） 倡议书/信是为倡议或是发起某项活动而写的号召性的、公开提议性的专用文体。倡议书一般由标题、称呼、正文、结尾、落款五部分组成。 Gener: A Letter of proposal(倡议信） 时态：一般使用一般现在时和一般将来时。 人称：通常以第三人称为主，兼用第一、二人称 结构 首段：点明背景/目的 中段：强调倡议某事的重要性+具体倡议内容/做法 尾段：进行呼吁 structure? 结构 首段：点明背景/目的 1.Have you noticed that_现象 2.When it comes to_某事物+ 现象 3.现象 is aimed at raising awareness of 某物. 4.Its aim is to do sth. 中段：强调倡议某事的重要性+具体倡议内容/做法 1.某事物 plays a key role in our world/daily life. Not only does 某物怎么样 , but also 某物怎么样 某事物 has become a necessity/must. 2.What can we do is to do sth/We are sopposed to do sth. we should do sth. We had better do sth. We spare no efforts to do