Unit 9 Are these blue socks yours? (广东版)开心英语课件四年级下册 unit9教学目标: 学会本课的八个新单词。pajama, slipper, underwear, towel, key, money, handkerchief, swimsuit. 掌握句子:This is my book. This is mine.This your book. This is yoursIs this your book? Yes, it is. It’s my book./ It’s mine.Review:1.Free talk.2.The new words.3.The sentences pajama slipperun..