高中英语 Unit 4《Exploring plants》学案 新人教版选修9VIP专享

Unit4 Exploring plants目标认知 重点词汇： scale, conflict, restriction, fluency, appeal, postpone, evolve, attach, date back to, give out 重点句型：not …until 句型 语 法： 宾语 精讲巧练 重点词汇 scale 【原句回放】 However, it was not until the eighteenth and nineteenth centuries that the exploration of the botanical world began on a large scale. (P32) 【点拨】scale n. the size of sth. , especially when it is big 意为“大小，规模”，on a large scale 表示“规模宏大的”，还表示“等级；比例，尺度” 如：Any public demonstrations（游行）on a large scale without the permission of the city authorities is antisocial. The scale of this map is one centimeter to the kilometer. A machine for weighing people has a scale from one pound to 300 pounds on it. 【拓展】scales 表示“称，天平”；scale 也用作动词，表示“攀越，爬越”，短语：scale up/ down 按比例逐步增加/减少， 如：Students scaled an 8-foot fence to enter the theatre. Such a big order means scaling up our production capacity. 【随时练】 With the opportunity to survive becoming small, the search operation has been scaled down slowly at present. A. has been scaled down B. is being scaled down C. scaled up D. is scaling up Key: B conflict 【原句回放】Brave young men took the opportunity of going on botanical expeditions, often facing many dangers including disease,…and conflicts with the local people. (P32) 【点拨】 conflict n. angry disagreement between people or groups 表示“冲突，争端”，常与介词 between / over 连用， be in conflict with sb. 表示“与某人处于争执中”。conflict 也用作动词， 表示“冲突；争执” 如：There is a conflict between the two sides of his personality. She is in conflict with her employer over sickness pay. The two stories conflicted, so I did not know what...