WELCOME UNIT Section Ⅳ Discovering Useful Structures课件（74张）+学案（含答案）+练习（含答案）--高中英语人教版（2019）必修第一册

Section Ⅳ　Discovering Useful Structures 　　　(语法项目——基本句子结构) 语境中体悟 A lot of students know each other from the primary and middle school.① They are in their “comfort zone”②， feeling they have a sense of control over their relationships.But when the first real day of high school comes, that will change③....