词汇表 各单元单词和习惯用语 学习要点 Unit 9 We're Taking Photos Unit 8 In the Bathroom Unit 7 Where's the Post Office? Unit 6 Happy Birthday to You! Unit 5 What about a Robot? Unit 4 This Is Really Fun Unit 3 What's the Matter? Unit 2 I Like Spring Unit 1 It's the Spring Festival