(共21张PPT) Unit1 How tall are you? Part B （Read and write） 新知导入 Spring is coming!The sky is clearer and the sun is brihgter. Can you think of any other changes?Look and tick. The trees are greener.The weather is warmer. 知识讲解 新知讲解 Spring is so pretty.Wu Yifan and his family are going on a trip to the...