北师大版英语高二下册《unit 22 environmental protection》word学案(2).doc

1、Unit 22 Environmental Protection 导学案（2）Lesson 1 Global WarmingCan we take the heat?(2)编写人：韦斌 审核：高二英语组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

2、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 Earths 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 。

3、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Its ones 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 up B. referring to C. looking f

4、or D. trying toA clean environment can help the city bid for the Olympic, which will promote its economic development.A. in nature B. in teturn C. in turn D. in factWe firmly believe that war never settles anything. It only violence.A. runs into B. comes from C. leads to D. begins with2. Without the

5、se naturally occurring gases, the suns 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：介词（短语）with, without, under, but for 等Plants would die without water on the earth.连词 or, but

6、 或 otherwiseHe would have given you more help, but he was too busy.不定式短语作状语He would be stupid not to accept that offer.分词短语This asme thing, happening in wartime,would amount to a disaster.【经典回放】But for the help of my English teacher, I the first prize in the English Writing Competition.A. would not

7、win B. would not have wonC. would win D. would have wonA small plane crashed into hillside five miles east of the city, all four people on board.A. killed B. killing C. kills D. to kill Para 31. Over the last 100 years, the global average temperature has increased by 1F and many experts insist that

8、the blame for this global warming can mostly be pinned on human activities.译文 insist 表“坚决要求.”时，从句的谓语动词用“（should）+动词原形”表示虚拟语气；表“坚持某一事实或坚持认为”是用陈述语气。eg: Insisting that Tom had stolen his car, Mr. Smith insisted that he be put into prison.blameblame sb. for. 为.责备某人blame sth. on sb. 把. 归咎于某人be to blame f

9、or sth. 该为某事受责备，该为某事负责任Mr. Green stood up in defence of the 16-year-old boy, saying that he was not the one .A. blamed B. blaming C. to blame D. to be blamedpin the blame on 把责任推到 .上pin ones hope on 把希望寄托在 .上2. The amount of carbon dioxide in the atmosphere has risen by more than 30 in the last 250

10、years with half of this increase occurring since 1960.译文 【回顾】with 复合结构with+n./pron.+形容词/ 副词/介词短语/不定式 /现在分词/过去分词在句中常作定语或状语。eg: She saw a brook with red flowers and green grass on both sides.With nothing to do, he went to sleep.You have no idea how she finished the relay race her foot wounded so much.

11、A. for B. when C. with D. whilePara 4A temperature increase of 1F may not sound like a lot, but if we continue to produce carbon dioxide and other gases in such huge quantities, we are condemning life on Earth and should expect severe consequences.译文 condemn谴责，指责 condemn sb./sth for sth. 因. 谴责某人/物eg

12、:She condemned her son for his behavior.宣判；判处 condemn sb. to sth. 判处某人 . 刑eg:The judge condemned the man to ten years in prison.迫使.接受困境（或不愉快的状况）condemn sb. to sth. 迫使某人接受.宣告使用.不安全 condemn sth. as sth. 宣告使用.不安全Para 51. But why wait around for governments to take actions?wait for sb. to do sth 意为 take

13、 action 意为 【拓展】take measures/steps to do sth. 采取措施做某事2. Experts advocate that each peason play their part.advocate vt. 主张，提倡，支持advocate sth. 提倡某事搭配 advocate doing sth 主张做某事advocate that-clause 提倡.注意：当 advocate 后跟从句时，要用虚拟语气，由 should 加动词原形构成，should 可以省略。eg:The report advocated that all buildings (should) be fitted with smoke detectors.3. After all, theres no substitute for our Earth.译文 substituten.代替者；代用品a substitute for sb./sth. 某人/物的代替者/代用品vt. 代替；取代substitute A for B 用 A 取代 B搭配 substitute B with/by A 用 A 取代 Bsubstitute for sb./sth. 取代某人/物Step III 练一练Do Exe5 on page 7Step IV 课后小结