unit22 导学案（2）

Unit 22 Environmental Protection 导学案（2）Lesson 1 Global WarmingCan we take the heat?(2)Green Cities – Plan for the Planet!营造绿色城市，呵护地球家园！（2005 年）Learning aims:A: Learn and recite the new words in lesson 1.B: Keep the important words, phrases in mind.C,D: Have the detailed information by reading the passageImportant and difficult point:How to understand the passage thoroughly.Step I 词汇回顾 （A 级） Step II Language points.(B,C 级)Para 21. Global warming refers to an average increase in the Earth’s temperature that, in turn, leads to climater change.译文 本句是主从复合句，that 引导 从句，修饰 。refer to lead to 两个 to 都是 词。in turn 【链接】in return 作为回报by turns 轮流，依次It’s one’s turn to do sth. 轮到某人做某事。take turns to do sth.= take turns doing sth.= do sth. by turns 轮流做某事【经典回放】The president spoke at the business meeting for nearly an hour without his notes.A. bringing upB. referring toC. looking forD. trying toA clean environment can help the city bid for the Olympic, which will promote its economic development.A. in natureB. in teturnC. in turnD. in factWe firmly believe that war never settles anything. It only violence.A. runs intoB. comes fromC. leads toD. begins with2. Without these naturally occurring gases, the sun’s rays back into space leaving the Earth cold and impossible to live on.译文 【句法分析】本句为 without 引出的含蓄虚拟条件句，与 相反；leaving...为现在分词短语作 (A 定语 B 状语)———含蓄虚拟条件句虚拟的条件不一定总是用 if 引导，有时可以用一下表达：1① 介词（短语）with, without, under, but for 等Plants would die without water on the earth.② 连词 or, but 或 otherwiseHe would have given you more help, but he was too busy.③ 不定式短语作状语He would be stupid...