Unit 3 Conservation Lesson 1 The Sixth Extinction 单词 课件-2026-2027学年高二英语北师大版选择性必修第一册

该高中英语课件聚焦Unit 3 Conservation的Lesson 1核心词汇，涵盖die out、species、wipe out等短语及unusual、mass、varied等词汇的用法。通过“环境污染导致鸟类死亡”的情境例句导入，搭建从基础词汇到短语辨析、语法应用的学习支架，帮助学生梳理前后知识脉络。 其亮点在于注重词汇辨析（如various与varied的用法差异）、反义对比（decrease与increase的用法对比）及多样化练习题（词性判断、语法填空），有效提升学生的语言能力和思维品质。学生能在应用中扎实掌握词汇，教师可借助结构化内容高效开展词汇教学。

Unit 3 Conservation Lesson 1单词 1. die out 消失；绝迹，灭绝 die of/from 死于…… die off 相继死去 die down 逐渐变弱；逐渐平息 die away 逐渐消失；逐渐减弱 die-died(过去式）-died（过去分词）-dying(现在分词） In recent years, some birds have __________environmental pollution. With more and more birds_____________, some day some species will_________ (用die的相关短语填空。) died of/from dying off die out 2. species n. 物种 endangered species 濒危物种 extinct species 灭绝物种 3. wipe vt. 擦；拭 4. wipe out 彻底毁灭 同义短语wipe sth. away 把某物清除掉 eg: This disease tends to wipe out the entire population. 5. unusual adj. 异常的；不平常的 usual adj. 通常的 usually adv. 通常地 unusually adv. 不寻常地 as usual 像平常那样 It is unusual (for sb.) to do sth. 做某事对某人来说是不寻常的 It is_________ for students to take part-time jobs during summer vacation. __________(usual), the work is boring. usual Usually 6. mass adj. 大量的 n．[C]堆，团，块 a mass of 许多， 一堆 masses of 成堆的……；大量的…… 特别提醒：a mass of/masses of后可跟可数名词复数或不可数名词，当“a mass of/masses of＋名词”作主语时，其谓语动词的形式以of后名词所表达的意义而定。 Masses of customers are entering the supermarket. A mass of snow lies in the yard. in mass 整个地，全部地 massive adj. 巨大的；大而重的；结实的；非常严重的 the masses 群众 判断下列句子中mass的词性及含义/语法填空 ①The polar bear is found in the Arctic Circle and some big land masses as far south as Newfoundland.________________ ②Recent development has made possible machines that print, cook, and serve foods on a mass scale.________________ ③Pluto (冥王星) and Triton (海王卫一) have nearly the same size, mass, and density (密度)．________________ ④The government cares much about the interests and well-being of the masses.________________ ⑤A mass of work ____________ (do) to prevent the river from being polluted up to now. ⑥The young dancers looked so charming in their beautiful clothes that we took ________ (mass) of pictures of them. n.块 adj.大批的 n.质量 n.群众 has been done masses 7. varied adj. 各种各样的，形形色色的 varied weather 天气多样 various adj. 各种各样的 variety n. 不同种类；多样化 a variety of ＝varieties of 各种各样的 vary v. (大小、形状等)相异, 变化 vary in … 在……方面不同 vary from…to… 从……到……各不相同 vary with 随……而变化 ✍辨析 various vs varied（考试易混） - various：侧重数量多，不同的，只放在名词前作定语 various books 各式各样的书籍 - varied：侧重富有变化、丰富多彩，可作定语/表语 varied life 丰富多彩的生活 (1). The prices ______ (vary) with seasons. (2). There is a wide ______ (vary) of goods in the supermarket. vary variety 8. asteroid n. 小行星 9. decrease n. 减少；减少的量 vt.&vi. 减少 decrease to + 数字 下降到……（最终数值） decrease by + 数字/百分比 下降了……（变化幅度） decrease from…to… 从……下降到…… a decrease in sth …方面的减少 on the decrease 正在减少（固定短语） (1). The population has decreased ______ half.（by/to） (2). There has been a big decrease ______ traffic accidents.（in/of） by in 反义词：increase （1）vi. & vt. (使)增长，增多，增加 （2）n.[C，U]增长，增多，增加 increase to... 增加到……(表示增加后的量) increase by... 增加了……(表示增加的量) on the increase 在增加 increase in... 在……方面增加 10. blame vt. 责怪，指责 blameless adj. 无过错的，清白的（了解） 11. be to blame (对某事) 负有责任 blame...for (doing) sth. 因(做)某事责备…… blame sth. on sb./sth. 把某事归咎于某人/某事 be to blame for (doing) sth. 因(做)某事应受责备；对(做)某事负有责任(不定式用主动形式表示被动意义)   (1). Who is ______ (blame) for the accident? (2). He blamed his carelessness ______ the error. (3). Don’t blame the accident ______ the driver. to blame for on 12. affect vt. 影响 affected adj. 受到影响的；被打动的 affection n. 喜爱，感情 effect n. 影响，效果 effective adj. 有效的（effect形容词形式) have an effect on 对…有影响 (1). The bad weather greatly ______ (affect) our trip. (2). The medicine had a good ______ (affect) on him. affected effect 13. be at risk 处境危险，受到威胁 risk n. 风险 v. 冒…的风险 risky adj. 有风险的，有危险的 risk doing sth 冒险做某事 We must use cloning cautiously, because it may put people ____ risk. at 14. endangered adj. 濒危的 danger n 危险 in danger 处于危险之中 out of danger 脱离危险 dangerous adj. 危险的 endanger vt. 使处于险境 15. solar adj. 太阳光（能）的 Solar energy/ power 太阳能 Solar system 太阳系 solar cars 太阳能汽车 16. hatch vt.&vi. (使) 孵化 eg: The hen must find a warm place to hatch her eggs. 17. restore vt. (使)恢复   restore sth 恢复/修复某物 restore sth to sth/sb 把某物恢复到……；把某物归还某人 restore one’s health 恢复健康 restoration n. [U/C] 恢复；修复 restored adj. 修复好的；恢复的 (1). It will take a long time for him ______ (restore) his strength. (2). The ______ (restore) of the park will start next month。 to restore restoration Thank you ! $