视频地址：https://video.cache.bdschool.cn/vd/f6532b30ae3002d91658444efa6b9e15.mp4
附件：
Unit 3 Is this your pencil？(Period 4)-教学设计.docx
附件：
Unit 3 Is this your pencil？(Period 4)-练习题.docx
附件：
Unit 3 Is this your pencil？(Period 4)-任务单.docx
附件：
上传版-Unit 3 Is this your pencil？(Period 4).pptx
