高考英语总复习 Unit 4 Global warming教学案 新人教版选修6-新人教版高三选修6英语教学案

Unit 4 Global warmingStep 1 课前准备——单元考点 自查自测1.词汇分层级识记过关 2.语境活用填写过关 3.经典句式背诵仿写过关 4.类词巧积累事半功倍(一)分门别类攻单词——识形辨意·拓展应用(二)写用结合记短语——译写短语·语境活用(三)仿写活用练句式——经典句型·仿写背诵经典原句句式归纳仿写造句1.Even if we start reducing the amount of carbon dioxide and other greenhouse gases...即使我们开始减少二氧化碳和其他温室气体的含量……even if＝even though 引导让步状语从句，意为“即使；尽管”。1.即使天气不好，我们也要做一次旅行。We'll make a trip even_if/even_though_the_weather_is_bad.2.As I'm not sure where to start with my project, I would appreciate any suggestions you may have.由于我不清楚我该从哪里着手开始我的研究，如能得到你们的建议我将十分感激。“疑问词＋不定式”结构在句中作宾语。2.他们还没决定去哪里旅游。They haven't decided where_to_travel.3.It is OK to leave an electrical appliance on so long as you are using it—if not, turn it off！so/as long as“只要”，引导条件状语从句。3.(2014·广东卷)只要有善良和美德，世界将变得更加美丽。只要你在使用电器设备，你可以让它开着——如果不用，就把它关掉！As_long_as_there_is kindness and virtue, the world will become more beautiful.Step 2 课堂探究——核心考点 点点突破1.重点难点考点学通练透 2.归纳总结拓展开阔视野 3.方法规律技巧权威点拨 4.面面俱到打创高效课堂第一时段 Warming up & Reading1．quantity n. 量；数量；数目[教材原句] The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere.当我们向空气中排放大量的多余的二氧化碳的时候，问题就开始了。(1)in quantity/in large quantities 大量地(2)a quantity of 或 quantities of 后既可接可数名词复数也可接不可数名词。(3)“a quantity of＋名词”作主语时，谓语动词用单数；而“quantities of＋名词”作主语时，谓语动词用复数。单句语法填空①As a result of destroying the forests, a large quantity of desert ____________(cover) the land in the last few...