人教版九年级全一册 Unit 13 We're trying to save the earth! Section A Grammar focus 4a—4c
Section A Grammar focus 4a—4c 第一课时:围绕「present progressive, used to, passive, modal verbs」,学习核心词汇与重点句型,通过对话、听力与配对活动理解并运用本课内容。