Unit 6 Period 5 课时练案 课文整体教学(Developing ideas)-【名师导航】2026-2027学年高中英语必修第二册教师用书word（外研版）

本讲义围绕“真正的环保行为辨析”核心知识点，通过课文整体理解（大意、篇章结构题）、细节探究（环保误区讨论）、语言知识梳理（一词多义、词块、写作佳句、长难句分析）到应用练习（语法填空、词汇微练）的脉络，构建从理解到分析再到应用的学习支架。 该资料以常见环保误区辨析为切入点，通过“绿色真相是否正确”的问题讨论培养学生批判性思维（思维品质），结合一词多义、倍数表达法等分层语言知识设计提升语言能力。课中辅助教师系统开展课文教学，课后助力学生通过词汇微练、语法填空等巩固知识，弥补语言盲点。

Period 5　 课文整体教学(Developing ideas) Ⅰ．文章大意 What is the main idea of the text? A．Introducing what is really green． B．Encouraging people to become greener． C．Sharing some experience in environmental protection． D．Recommending some measures to raise people's environmental awareness． [答案]　A Ⅱ．篇章结构 1．Why are people advised to take a reusable bag? A．Because both plastic and paper bags are bad for the environment． B．Because plastic bags are difficult to produce． C．Because paper bags are a danger to wild animals． D．Because the process of making paper bags is more complicated． 2．What's connected with energy saving? A．Eating local food． B．Eating transported food． C．Producing food by ourselves． D．Using less energy during food production． 3．Which of the following is saving energy? A．To spend 8 minutes having a bath． B．To take a shower more than 8 minutes． C．To try to take a bath instead of a shower． D．To keep your shower time as short as possible． [答案]　1—3　ADD 1．What other “green truths” have you ever heard？Do you think it is truth？Why or why not? ____________________________________________________________________ ____________________________________________________________________ 2．What else can we do to protect the environment? ____________________________________________________________________ ____________________________________________________________________ [答案]　略 Ⅰ．一词多义/熟词生义 1．contribute v．促成，造成(某事发生)；捐献，捐助；投稿 ①(教材原句)Look at the three items that contribute to a carbon footprint ． 促成，造成(某事发生) ②She contributed a number of articles to the magazine． 投稿 ③Many local businesses preferred to contribute to the school rebuilding fund． 捐献，捐助 2．average adj．平均(数)的；普通的，一般的 n．平均(数)，平均水平 v．平均为 ①(教材原句)The average score of our group is... adj．平均(数)的 ②He is just an average man；there was nothing special about him． adj．普通的，一般的 ③My marks were above average，so I was praised by the teacher． n．平均(数)，平均水平 ④The rainfall averages 36 millimetres a year in this area． v．平均为 3．The cost of repairing the house amounted to $250． v．总计；_共达 Ⅱ．词块积累 1．paper shopping bags 纸质购物袋 2．produce more greenhouse gases 产生更多的温室气体 3．go shopping 去购物 4．turn off a device 关上一台设备 5．as short as possible 尽可能短 Ⅲ．写作佳句 1．Plastic bags cause litter and are a danger to wild animals，which mistake them for food． 塑料袋会变成垃圾，被野生动物误食后会对其造成伤害。 2．It is the production of food，not its transport，that uses most of the energy and produces most of the greenhouse gases． 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。 3．It depends on how long you spend in the shower and how large your bath is． 这取决于你淋浴的时间和你的浴缸大小。 4．Therefore，the key is to keep your shower time as short as possible． 所以，节水的关键在于尽量缩短淋浴的时间。 Ⅳ．长难语句 1．This happens because electricity continues to leak from the device，even when it is turned “off”． [分析]　本句是一个复合句。because引导原因状语从句，when引导时间状语从句。 [翻译]　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。 2．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． [分析]　本句是一个较长的简单句。句子的主干是local produce might have used more energy and produced more greenhouse gases than produce。grown a long way away为过去分词短语作定语，修饰produce，taking into account its transport为动词-ing形式短语作状语。 [翻译]　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。 Ⅴ．课文语法填空 The majority of us take steps 1．to save(save)energy and reduce waste and pollution．But recently，some “green truths” have been shown to be only half true，or even 2．completely(complete)false．Here are some facts we should know． First of all，paper shopping bags are not 3．better(good)than plastic ones．Because 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．So，take a 4．reusable(reuse)bag with you when you go shopping．Secondly，when you turn off a device，it doesn't stop 5．using(use)power．This happens 6．because electricity continues to leak from the device．The proper way is to remove the plug 7．from its power supply．Thirdly，eating local food isn't better for the environment because the production uses most of the energy．Lastly，8．whether it's better to take a shower or a bath 9．depends(depend)on the amount of water we use． So it's worth 10．checking(check)common ideas and opinions to see what's really green． 1．(教材原句)Most 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． *majority n．多数，大多数(人或物) (major adj．主要的；重要的 v．主修 n．主修课程；minority n．少数；少数民族) (1)a/the majority of　 多数 in the majority　 占多数 (2)major in　 主修 (3)a/the minority of　 少数 in the minority　 占少数 单句语法填空/单句写作 ①In the nursing profession，women are in the majority． ②Mike is a student at Howard University，majoring in physics for a degree in Natural Science． ③(应用文写作之调查分析)调查显示，大多数学生认为通过听英语歌曲来学习英语是个好主意。 The survey shows a/the majority of students think it is a good idea to learn English by listening to English songs． 2．(教材原句)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． *take...into account 把……考虑进去 (1)take account of ＝ take...into account 　 把……考虑进去 give an account of　 对……进行描述 on account of　 因为，由于 on no account　 决不(位于句首时句子用部分倒装) (2)account for　 解释，说明；(数量/比例上)占据 单句语法填空/单句写作 ①When questioned，she was too shocked to give an account of what had happened when the attack took place． ②The poor weather may have accounted for the increase in the number of people who cough day and night． ③(应用文写作之建议信)我希望您能考虑一下我的建议，我相信您会作出正确的选择。 I hope that you can take my suggestion into account/take account of my suggestion，and I'm convinced that you will make a right decision． 3．(教材原句)It urges people to save food by not waiting anything on the dining table． *urge v．竭力主张，强烈要求，敦促 n．冲动；强烈的愿望(urgent adj．紧急的；迫切的；urgently adv．紧急地；迫切地；urgency n．紧急；紧急情况) (1)urge sb．to do sth．/into doing sth． 　 力劝/敦促某人做某事 urge that...　 强烈要求；极力主张 　 [从句谓语动词用(should＋)动词原形] urge (sb．)on　 鼓励；激励；为……加油 (2)in urgent need of　 急需 单句语法填空/单句写作 ①Parents should actively urge their children to take(take)advantage of the opportunity to join sports teams． ②The people in the earthquake-stricken area are in urgent(urge) need of food，medicine and shelters． ③(读后续写之情节描写)我收到莫伊拉的短信，敦促我联系她。 I got a text message from Moira urging me to get in touch with her． ④(读后续写之心理描写)汤姆感到很尴尬，但他抑制住了跑下台的冲动。 Tom was very embarrassed，but he fought the urge to run off the stage． 4．(教材原句)Look at the three items that contribute to a carbon footprint． *contribute v．促成，造成(某事发生)；捐献，捐助；投稿(contribution n．贡献；捐献，捐助；稿件) (1)contribute to 　 有助于；促成；为……做贡献 contribute...to...　 向……捐献……；向……投稿 (2)make a contribution to/ make contributions to 　 对……做出贡献 单句语法填空/单句写作 ①Everyone is willing to contribute food and clothes to the poor people in remote areas． ②Only in this way can we make a great contribution(contribute) to our family and our society． ③(读后续写之主旨升华)把小事做好有助于增强我们的自信心，并帮助我们在未来迎接更大的挑战。 Doing small things well contributes to strengthening our confidence and helping us meet bigger challenges in the future． 5．(教材原句)The average score of our group is... *average adj．平均(数)的；普通的，一般的 n．平均数；平均水平 v．平均为，平均达到 an average of 　 平均有…… with the/an average of　 平均为 on average　 平均起来；在一般情况下 above/below average　 高于/低于平均数 单句语法填空/单句写作 ①It's a small shop，with an average of about 500 customers a week． ②On average，how much time do you spend on sports activities each week? ③(读后续写之人物描写)她的外表确实高于平均水平。她明亮的眼睛和迷人的微笑使她无论走到哪里都引人注目。 She's really above average in appearance．With her bright eyes and charming smile，she stands out wherever she goes． ④(应用文写作之班级介绍)我班的学生的平均年龄为16岁，每天平均学习10小时。 The students in my class，whose average age is 16，study 10 hours a day on average． 词汇 1．amount n．数量，数额 2．remove v．移走，搬走，去掉 3．concerned adj．焦急的，担忧的 微练 1．过去少量的土地被用来饲养动物。 Small amounts of land were used for keeping animals in the past． 2．一些过时的衣服可能从商店里搬走。 Some out-of-date clothes may be removed from the shop． 3．我担心你的健康。 I'm concerned about/for your health． (教材原句)However，making a paper bag uses four times as much energy as making a plastic bag and up to three times the amount of water． *倍数表达法 常见的倍数句型： (1)倍数＋as＋adj．/adv．的原级＋as... (2)倍数＋adj．/adv．的比较级＋than... (3)倍数＋the＋性质名词(size/length/width/height/depth...)＋of... 单句语法填空/一句多译 ①According to a recent study，the global market for low-carbon energy will become three times bigger (big) over the next decades． ②It's said that the power plant is now twice as large as what it was． ③(应用文写作之介绍学校)我们的操场已经扩大了，是原来的三倍大。 a．Our playground has expanded，which is three times as big as the previous one．(同级比较) b．Our playground has expanded，which is three times bigger than the previous one．(比较级) c．Our playground has expanded，which is three times the size of the previous one．(the＋性质名词＋of) 　　　　　　　　　　　　　 ①take care of 照顾，照料 ②majority n．多数，大多数(人或物) ③take steps to do sth．采取措施做某事 ④false adj．不正确的，错误的 ⑤a danger 一个危险的事物(抽象名词具体化的用法) ⑥mistake...for...把……错当成…… ⑦break down 分解 ⑧amount n．数量，数额 ⑨in fact 事实上，实际上 ⑩be bad for 对……有害 ⑪go shopping 去购物 ⑫stop doing sth．停止做某事 ⑬turn off 关闭 ⑭stand-by adj．备用的 ⑮mode n．(机器、设备的)运行方式，状态，模式 ⑯electricity n．电 ⑰leak v．(使)漏，(使)渗漏 ⑱appliance n．家用电器，家用器具 ⑲remove v．移走，搬走，去掉 ⑳plug n．(电)插头 ㉑be good for 对……有好处 ㉒common sense 常识 ㉓transport v．运输，运送 ㉔in some cases 在某些情况下 ㉕produce n．产品；(尤指)农产品 ㉖take...into account 把……考虑进去 ㉗take a shower 淋浴 ㉘depend on 依赖，取决于 ㉙litre n．升，公升 ㉚be worth doing sth．值得做某事 What's really green? Most of us are aware that we must take care of① the environment[1]，and the majority② of us take steps to save③ energy and reduce waste and pollution．But recently，some “green truths” have been shown to be only half true，or even completely false④．Here are some common ones．Which are really green? [1]此处that引导宾语从句，作形容词aware的宾语。 Paper shopping bags are better than plastic ones? Plastic bags cause litter and are a danger⑤ to wild animals，which mistake them for⑥ food[2]．It takes hundreds of years for plastic to break down⑦[3]，but much less time for paper．Because of this，people think paper bags are the better environmental choice． [2]此处which引导非限制性定语从句，修饰先行词wild animals。 [3]本句句式为“It takes some time (for sb．/sth．)to do sth．”，意为“(某人/物)做某事花费某些时间。” However，making a paper bag uses four times as much energy as making a plastic bag and up to three times the amount⑧ of water．[4] The process also produces more greenhouse gases． [4]句中making a paper bag为动词-ing形式短语作主语，谓语动词uses用单数形式；four times as much energy as为倍数表达法：倍数＋as much/many＋n．＋as。 In fact⑨，both kinds of bags are bad for⑩ the environment．So，take a reusable bag with you when you go shopping⑪． When you turn off a device，it stops using⑫ power? When we turn off⑬ a device，such as television，it goes into stand-by⑭ mode⑮．Devices in this mode still use power，and older devices in stand-by mode can use even more．This happens because electricity⑯ continues to leak⑰ from the device，even when it is turned “off”．[5] To make sure your appliance⑱ is in fact off，remove⑲ the plug⑳ from its power supply． [5]句中because引导原因状语从句；when引导时间状语从句。 Eating local food is good for㉑ the environment? It seems like common sense㉒： eating local food should be better for the environment，because it does not need to be transported㉓ long distances and kept cold during transport．[6] 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．[7] In some cases㉔，local produce㉕ might have used more energy and produced more greenhouse gases than produce grown a long way away—even taking into account㉖ its transport． [6]eating local food为动词-ing形式短语作主语；because引导原因状语从句。 [7]本句是强调句型，被强调部分是句子的主语。 It's better to take a shower㉗ than a bath? It depends on㉘ how long you spend in the shower and how large your bath is．[8] If you spend more than eight minutes in a shower[9]，you'll use as much water as in a bath—about 50 litres㉙ of water．Therefore，the key is to keep your shower time as short as possible． [8 ]句中两个how引导宾语从句，作on的宾语。 [9]句中if引导条件状语从句。 Environmental awareness is now part of daily life．But it's worth checking㉚ common ideas and opinions to see what's really green． 哪些才是真正的环保做法？ 我们大部分人意识到要保护环境，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“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，其中哪些是真正的环保的呢？ 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使用的袋子。 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。 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。 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。 环保意识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。 1 / 1 学科网（北京）股份有限公司 $