2020_2021学年新教材高中英语unit6earthfirst第1课时startingoutunderstandingideas学案含解析外研版必修第二册202011132202.doc

PAGE Unit 6 Earth first Unit 6 Earth first 　　　　　　　 ·Climate change Global warming is causing the temperature of the earth to rise slowly, causing massive global changes to our natural environment. ·Rising sea level Global warming is rapidly melting glaciers around the globe, causing a rising sea level and possibly coastal flooding and other weather problems in the future. ·Ecosystem changes Global warming is changing certain ecosystems throughout due to temperature fluctuations (波动). Animals and plants are being forced to adapt to this, and, as a result, are dying off. ·Breakdown of the ozone (臭氧) layer Global warming is creating holes in the ozone layer, primarily from human use of products that emit (发出) poisonous chemicals. The ozone layer absorbs UV radiation from the sun. The holes are causing amounts of poisonous chemicals present in our breathing air to increase at a rapid rate. 你知道全球变暖会给人类的生活和环境带来哪些变化吗？ [知识点击] 1．due to 因为，由于 2．adapt to 适应 3．die off 相继死去 4．at a rapid rate 以极快的速度模块核心素养导航 主题语境：人与自我 主题群：大自然 语篇类型：记叙文 文化意识 语言能力 (1)词汇知识：单词 scare, target, fortunately, extinction, attitude, devote, cruelty, presentation, establish, damage, affect, supply, adopt, reduce, release, infection, permission, majority, amount, remove, urge, contribute, average 的用法 (2)语法知识：v.-ing和v.-ed形式作宾语补足语。 正确了解自然与人的关系，增强保护生态环境的意识，并从身边的小事做起。 第一课时　Starting out Understanding ideas Ⅰ.词汇初探 1．dive v. 潜水 2．target v. 把……作为目标 n. 目标；靶；受批评的对象 3．scare v. 恐吓；受惊吓→scared adj. 害怕的(修饰人)→scary adj. 恐怖的；吓人的(修饰物) 4．fortune n．机会；运气；大笔的钱→fortunate adj. 幸运的→fortunately adv.幸运地→unfortunately adv.不幸地 5．extinct adj. 灭绝的→extinction n．灭绝；绝种 6．attitude n. 态度；看法→altitude (形近词) n. 高度 Ⅱ.短语互译 1．due_to 由于，因为 2．be_scared_of 害怕某事 3．in_fear 在恐惧中 4．cut_off 切断 5．come_across 偶然遇到 6．the other way round 恰好相反 7．be wrong about 误解 8．by mistake 错误地 9．protect...from... 保护……免受…… 10．have an effect on 对……有影响 Ⅲ.经典句式 1．Some people stopped swimming in the sea, afraid of the horrible creature from the film. 有些人因为害怕电影里可怕的生物而停止在海里