Unit 6 Earth First Developing ideas What’ s really green课文讲解课件-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“绿色生活的真实认知”展开，通过“绿色生活”问题导入（如购物袋、电器待机等选择），引导学生先自主判断，再阅读文章验证并纠正常见误区，辅以词汇解析（如“break down”“take...into account”）和语法支架（倍数表达、强调句），构建“提问-探究-理解”的学习脉络。 其亮点在于以批判性思维为核心，结合语言能力与文化意识培养。例如通过对比塑料袋与纸袋的生产能耗、分析本地食物的环保真相，引导学生辩证思考；语法点（如强调句“It is...that...”）融入语境学习，提升语言运用能力。学生能在探究中增强环保意识与思维品质，教师可依托结构化内容实施高效探究式教学。

Unit 6 What's really green? Look at the questions about “green living” and tick your answers. 1. Which shopping bag is more environmentally friendly? □ A plastic塑料的 bag. □ A paper bag. □ Neither of these. 2. What should you do to save energy when leaving your home? □ Turn off a device. □ Unplug a device. □ Neither of these. 拔掉……的电源插头 plug n. (电)插头 v. 用插头接通电源 关掉 turn on 3. What food is better for the environment? □ Food produced near to where you live. □ Food produced far from where you live. □ It depends 看情况定 . 4. Which uses less water? □ Taking a bath. □ Taking a shower. □ It depends. What’s really green? Read the passage and check your answers. 1Most of us are aware that we must take care of the environment, and the majority of us take steps to save energy and reduce waste and pollution. But recently, some “green truths” have been shown to be only half true, or even completely false. Here are some common ones. Which are really green? be aware that意识到 环境 多数 take steps/measures to do sth.采取措施做某事 adv.完全地 错的 adj.常见的 我们大部分人都意识到要保护环境,也采取了各种行动节约能源,减少浪费和污染。但是近来,一些“绿色环保真相”被证实并非完全正确,甚至是无稽之谈。下面列举了一些常见的环保观念,其中哪些是正确的呢? 消除,破除(障碍/偏见);(机器)出故障;(情绪)垮掉,崩溃;(使)分解 Paper shopping bags are better than plastic ones. 2Plastic bags cause litter and are a danger to wild animals, which mistake them for food. It takes hundreds of years for plastic to break down, but much less time for paper. Because of this, people think paper bags are the better environmental choice. n.垃圾 把…错当成… It takes some time for sb./sth.to do sth. 做某事花费某人/物一些时间 对..是一种危险 3However, making a paper bag uses four times as much energy as making a plastic bag and up to three times the amount of water. The process also produces more greenhouse gases. 4In fact, both kinds of bags are bad for the environment. So, take a reusable bag with you when you go shopping. 倍数 多达 a large amount of 许多 =large amounts of 许多 .....的数量 n.过程 对…有害 do harm to be harmful to 纸质购物袋优于塑料袋? 塑料袋会变成垃圾,被野生动物误食后会对其造成伤害。塑料需要数百年才能分解,而纸的降解时间要短得多,因此人们认为纸袋是更为环保的选择。 然而,生产纸袋的耗能为塑料袋的四倍,耗水则多达三倍。其生产过程也会产生更多的温室气体。 事实上,这两种袋子都不够环保,所以出门购物时请带一个能重复利用的袋子。 ◆倍数的表达 This bridge is three times as long as that one. This bridge is two times longer than that one. This bridge is three times the length of that one.  He has got three times as many books as his sister. I spent twice as much time on my studies as you did. 倍数+the+计量名词+of+其他 倍数+as+adj./adv.原级+as+其他 倍数+adj./adv.比较级+than+其他 倍数+as + many +可数名词复数 + as 倍数+ as+ much +不可数名词 + as 计量名词 ：size大, length长, width宽, height高, depth深，weight重 温馨提示： 表示“两倍”时用twice或double； 三倍或三倍以上用“基数词+times”表达。 这棵树是那棵树的三倍高。 This tree is three times as tall as that one. This tree is three times three times taller than that one. This tree is three times the height of that one. 单句语法填空 ①This bridge is three times the length 　　　　 that one.  ②My room is four times 　 　　　 (large) than yours.  ③His car is twice 　　　　 expensive as Mr Green’s.  of larger as When you turn off a device, it stops using power. 5When we turn off a device, such as television, it goes into stand­by mode. Devices in this mode still use power, and older devices in stand­by mode can use even more. This happens because electricity continues to leak from the device, even when it is turned “off”. To make sure your appliance is in fact off, remove the plug from its power supply. 待机模式 从...泄露 确保 家用电器 电力供应；电源供应 关掉的电器不耗电? 当我们关掉电视等电器时,它会进入待机状态。这种状态下的电器仍然耗电,而且越旧的电器耗电越多。这是因为电器即使已经被“关掉”了,却依然有电流从电器中流失。为确保电器设备彻底关闭,请从电源上拔下电器插头。 Eating local food is good for the environment. 6It seems like common sense: eating local food should be better for the environment, because it does not need to be transported long distances and kept cold during transport. Unfortunately, it is not that simple. It is the production of food, not its transport, that uses most of the energy and produces most of the greenhouse gases. 常识 need doing=need to be done 需要被做 n.距离 n.生产过程,产量 n.气体 v. 生产 n. 运输 =be beneficial to sb./sth. In some cases, local produce might have used more energy and produced more greenhouse gases than produce grown a long way away—even taking into account its transport. 在某些情况下 take...into account 把…考虑进去 account for 解释，说明 在有些情况下,即使将运输的因素考虑在内,本地的农产品也可能比距离遥远的外地种植的农产品耗能更多,产生的温室气体也更多 本地的农产品 n. 农产品;制品 过去可能做了某事 吃本地食物更利于环保? 这似乎已是人们常识性的认识:吃本地产的食物更环保,因为不需要长途低温运输。然而事实并没有那么简单。相比于运输,食物的生产过程才是消耗大部分能源及产生大部分温室气体的原因。在有些情况下,即使将运输的因素考虑在内,本地的农产品也可能比距离遥远的外地种植的农产品耗能更多,产生的温室气体也更多。 It's better to take a shower than a bath. 7It depends on (how long you spend in the shower and how large your bath is). If you spend more than eight minutes in a shower, you’ll use as much water as in a bath—about 50 litres of water. Therefore, the key is to keep your shower time as short as possible. as...as possible尽可能... the key to doing sth. 做某事的关键 the answer/solution/approach to doing sth. 取决于= rely on 淋浴比泡澡更好? 这取决于你淋浴的时间和你的浴缸大小。如果淋浴超过八分钟,那么耗水量就和泡澡一样多——大约为五十升水。所以,节水的关键在于尽量缩短淋浴的时间。 8Environmental awareness is now part of daily life. But it’s worth checking common ideas and opinions to see what’s really green. be worth doing某事值得被做 环保意识 raise/arouse/strengthen one’s awareness of 提高/唤醒/增强某人对...的意识 环保意识现在已经融入了人们的日常生活, 但我们仍需仔细辨别我们已经习以为常的理念和观点中哪些才是真正 “绿色环保”的。 Conclusion Introduction Body green truth 1 green truth 2 green truth 3 green truth 4 Paper bags are not good for the environment. Turning off a device won’t stop it from using power. Eating local food isn’t better for environment. It’s not always better to take a shower than a bath. Summary To get the overall understanding of a context from subheadings. “Green truths” To think critically. 9 Why does the writer write the passage? A.He wants to introduce some new ways to save energy. B.He wants to correct the false green truths and show really green ones. C.He wants to call on more people to protect the environment. D.He wants to explain the importance of energy saving. Green actions we can take Recycle paper, cardboard, glass, and metal cans. turn lights off when they aren’t in use Eat less meat because it takes more resources to raise. Cut down on your water use. Line dry your clothing instead of using a dryer. Thank you. 必修第二册 Unit 6 Developing ideas 更多听力请关注“高老师学习社”微信公众号 null 204446.42 $