Unit 6 Earth First developing ideas课件 -2025-2026学年高中英语外研版必修第二册

该高中英语课件围绕“辨别日常‘绿色真相’真伪”展开，核心知识点为分析环保行为的真实影响。课堂导入通过“Sherlock Holmes’ challenge”及标题、副标题预测活动，引导学生建立阅读期待，读前预测主旨、读中用图表梳理原因-影响-措施逻辑、读后绘制思维导图，形成从预测到深入探究再到批判性思考的学习支架。 其亮点在于以“质疑常见认知”为核心，通过辨析“纸袋更环保”等四组说法、小组合作完成原因-影响-措施表格，培养学生思维品质（批判性思维）和语言能力（信息整合与表达），同时渗透环保责任感（文化意识）。学生在探究中提升逻辑分析与环保意识，教师可借助结构化活动及反思评估表高效实施教学。

Sharp eyes Sharp eyes: Which one is wrongly spelt? amount majarity device electricity Sharp eyes: Which one is wrongly spelt? appliance majority remove elctrisity Sharp eyes: Which one is wrongly spelt? amout false leak electricity Sharp eyes: Which one is wrongly spelt? majority mode remov amount Sharp eyes: Which one is wrongly spelt? mode remove device flase Unit 6 Earth First ---developing ideas What’s really green? environmentally friendly(环保) Learning objectives By the end of this period, you will be able to: 1. get the main idea of the passage and figure out what’s really green in our daily life. 2. understand the meaning and function of the subheading and the structure of the passage. 3. master the logic of causes-effects-measures in the context of a green lifestyle. 4. set up a doubtful attitude towards some common senses to judge them and improve the environmental awareness of green living. Lead-in: Sherlock Holmes’ challenge quick prediction What is the function of the red parts? subheadings/subtitles main heading/title expand on: give more information or details（详述） Pre-reading: Predict Look at the title, subtitles and pictures. Predict the main idea. Pre-reading: Predict A．We should raise the awareness of environmental protection. B．We must take care of the environment. C．Not all the “green truths” are really true. D．The common ideas are false. Check the prediction (tip 1: the first and the last paragraph) It discusses some common ____________ which have been shown to be only________ or even completely__________. green truths half true false detailed exploration Do you think they are true? half true?or false? While-reading: detailed exploration Paper shopping bags are better than plastic ones. When you turn off a device, it stops using power. Eating local food is good for the environment. It’s better to take a shower than a bath. ？ ？ ？ ？ causes effects measures Paper bags are not good for the environment. Turning off a device won't stop it from using power. Eating local food isn’t always better for the environment. It is not always better to take a shower than a bath. Making paper bags uses more______ and _______than making_________. It also produces more ________. Take a ______ with you when you go shopping. Devices turned “off ” go into __________but still use power because electricity __________ ______ from the device. _____________ from its power supply. Local produce sometimes might have used __________ and produced _____________ than ___________a long way away—even ____________ its transport. Eat ___________food. If you spend ________________ _________in a shower, you will use ____________ in a bath---about 50 litres of water. keep your shower time _____________________. While-reading: detailed exploration Work in groups to complete the chart. While-reading: detailed exploration p Paper shopping bags are better than plastic ones? FALSE Making a paper bag uses ___________ and ____ than making plastic bags. It also produces more __________________ Paper bags are no good for the environment. greenhouse gases. more energy resuable bag water 1. Devices turned “off ” go into _____________ and still use power because electricity ______________ from the device. p When you turn off a device, it stops using power. FALSE Turning off a device won’t stop it from using power. ______________ from its power supply. a mode that maintains some functions and is ready to restart at any time(待机模式) While-reading: detailed exploration stand-by mode continues to leak Remove the plug p Eating local food is good for the environment. HALF TRUE Local produce might have used __________ and produced______ ______________ than _____________a long way away—even __________________ its transport. Eating local food isn’t always better for the environment. Eat ________ ___________ While-reading: detailed exploration more energy more greenhouse gases produce grown seasonal local food. taking into account p It’s better to take a shower than a bath. HALF TRUE If you spend_____ _______________ in a shower, you’ll use ____________ ___in a bath ---about 50 litres of water. It’s not always better to take a shower than a bath. Keep your shower time ___________ ___________. While-reading: detailed exploration more than eight minutes as much water as as short as possible. Introduction Body Conclusion Green truth 1 Green truth 2 Green truth 3 Green truth 4 4.What’s the structure of the text? Draw the mind map of the structure. Conclusion Introduction Body green truth 1 green truth 2 green truth 3 green truth 4 Introduction green truth 1 While-reading: detailed exploration (tip 2: ) Paper shopping bags are better than plastic ones. When you turn off a device, it stops using power. Eating local food is good for the environment. It’s better to take a shower than a bath. doubtful thinking Reduce(减少） food waste. Recycle （回收）paper, cardboard, glass, and so on. Reuse（重复使用） bags while you’re shopping Reuse Reduce Recycle Post-reading: doubtful thinking What else can you do to become “greener”? 25 Post-reading: doubtful thinking Why there are so many question marks in the passage? Set up a doubtful attitude towards common senses. Sherlock Holmes’ first task Goup work: decide if the following “green truth” are true or not Green Truth 5 Wash as many clothes as possible at a time saves more water and electricity. Green Truth 6 Using paper tableware is more environmentally friendly than using plastic tableware. Reflection and Revision Aspects Excellent (√) Good (√) Need to improve (√) get the main idea of the passage and figure out what’s really green in our daily life. understand the meaning and function of the subheading and the structure of the passage. master the logic of causes-effects-measures in the context of a green lifestyle. set up a doubtful attitude towards some common senses and improve the environmental awareness of green living. By the end of the class, I can: Homework 1. (Compulsory)Give a talk about one of the green truth in the passage. 2. (Compulsory)finish exercise book Unit 6 part3 3.(Optional) Surf the internet and find another FALSE green truth. You need to consider: Which “green truth” are you going to talk about? Why do people think it is “green truth”? What is really truth? What can you do to become a greener? Useful expressions: Some people think that... However, it is (not completely) true because... Therefore, we should/had better/are supposed to... 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