2012高中英语 Unit20（5）学案 北师大版选修7VIP专享

Unit20 New Frontiers 导学案(5)Lesson 3---Scientific Breakthroughs 第二课时Tips: “Creativity in science could be described as the act of putting two and two together to make five.” --- Arthur KoestlerLearning aims(学习目标):A(层次): Learn and recite the new words in Lesson 3B:Keep the important words,phrases in mind. C,D:①Learn the important words and phrases of this part.②The important language points in Lesson 3,Para.2-Para.9Important and difficult point: Undestand the wholpassage(学习重点、难点) thoroughly and learn to analyze the long complicated sentences.Learning procedures(学习过程):StepⅠLanguage points.(C 级)Para.21．single out 意为：挑选 (A 级) eg. She was singled out for criticism.我来译: Para.32. This outspoken young man was rocking his one-year-old baby when he was suddenly inspired. (B 级) 译文: be doing …when…意为 [句型联想] be about to do …when…意为 [词语解析] inspire v.鼓舞，激起；给予灵感 rock v. 摇动,惊吓 n. 硬物,石块 〈练一练〉 (C 级)这则消息震惊了全世界.（rock）3.E=mc2 showed how a small piece of mass could produce an unbelievable amout of energy. (B 级)译文: 用心 爱心 专心1[词语解析]mass n. (1)quantity of matter without a regular shape (2) a large number of[短语拓展] a mass of 和 masses of 表示许多，大量；即可修饰可数名词也可修饰不可数名词Para.44.Edwin Hubble was about to make astronmy’s greatest breakthrough of the century. (B 级)译文: be about to do 意为 5.He discovered small areas of mist which were in fact galaxies like our own, millions of light years away from us, which proved that the universe was vastly larger than (what) had previously been thought. [句子分析] (C 级) 这是一个主从复合句，which were in fact galaxies like our own,为 从句，修饰 small areas of mist 作它的定语。which proved that the...