Unit 5 Revealing nature Developing ideas课件（共58张）+学案（含答案）+练习（含答案）--高中英语外研版（2019）选择性必修第一册

Period Four　Writing 【单元主题表达】 第二步　遣词造句 【核心词汇】 1.occur　2.search for　3.high-quality　4.container 5.expand　6.cover　7.to one’s delight/joy　8.come up 9.observe　10.gradually　11.process 【高级句式】 1.it suddenly occurred to me that 2.information (which/that) I needed 3.Here is what I did and observed 4.with clean...