Unit 2 Spring is coming! (the second period第二课时,spring 春天 summer 夏天 autumn 秋天 winter 冬天 season 季节 plant trees 植树 ride a bike 骑自行车,复习单词,1.What do you do in spring? 2.I often fly kites with my friends . 3.Sometimes we climb the mountains. 4.I plant trees with my parents every year on Tree Planting Day,复习句型,spring,In March,April and May,its warm and trees are green.We like to go out to play,summer,Summer is hot ,but we can go swimming and eat ice-creams,autumn,Autumn is cool but rich.We have many f