Unit 3 Topic Talk & Lesson 1 & Viewing Workshop（3个课件）-2023-2024学年高二英语【精耕团队】同步精品课件（北师大版2019选择性必修第一册）

Unit 3 Conservation Topic talk & Lesson 1 高二精耕团队 范冬烨 1 conserve 2 threat 3 cut down 4 switch 5 hunt 6 urgent 1. conservation n. 保护；保存 同义词辨析 1. I preserved my fortune by burying it. 2. I conserved my fortune by not spending it on junk. 3.I have reserved a part of my fortune to pay for college. 1）preserve-保护原始状态 2）conserve-保护管理资源 3）reserve-保护留存使用 She is passionate about wildlife_______________. conservation conservative adj. 保守的；守旧的 2. threat n. 威胁 词性变化 1. a threat to sb./sth. 对某人、某物构成威胁 2. threaten sb. (with sth.) 用……威胁某人 3. threaten to do 威胁要做某事 threatening adj. 威胁性的 threatened adj. 受威胁的 3. cut down 削减 系列短语 1. cut down to 减少至 2. cut down on 减少(某方面)开支 cut out 删减 cut through=cut short 抄近路 cut off 切断、隔离 4. switch v. 转换 n.开关 系列短语 1. switch (from sth.) to 从……转变到 2. switch over to 切换到 switch off 电源关 switch on 电源开 5. hunt v.&n. 猎取；搜寻 近义词辨析 1. look for (动作) 2. find (结果) => find out (下意识) 3. search (搜查) 4. search for(去寻找)=>in search of (目的性) 5. hunt for(找并获取) 6. seek (努力寻找) => sought (过) 6. urgent adj. 紧急的 词性变化 1. urge vt.&n. 催促；冲动 2. urge sb. to do sth. 催促某人做某事 3. urgency n. 急事 have / feel an urge to do sth. 有冲动 It is urged that 急需 (虚拟) Examples (1)I will not use my savings unless a matter of __________ happens.  (2)Many people in the earthquake-stricken area are in ___________ need of food and water.  (3)The two countries 　　　　　　　　to put an end to the war,which had lasted over 5 years and caused great suffering and losses.  She urged that I _______________(apologize) to him. urgency　 urgent　 were urged　 apologize Preview TopicTalk &Viewing workshop Prepare for the dictation Start with the exercisebook Homework $$ —— Unit 3 Conservation —— Lesson 1 The Sixth Extinction 高二精耕团队 范冬烨 Based on the video / your knowledge. How much do you know about extinction?-E1 1. How many times up to today has life on Earth almost died out? A. Once. B. Five times. C. More than 10 times. 2. About what percent of all species on Earth became extinct during the mass extinc