Now I can listenWhich one do you listen?Now I know the soundS sad 悲伤的 safe 安全的S sky 天空 school 学校S speak 说 study 学习S visit 参观 lesson 课程 Now I can sayHow can make use of trees？Sometimes we eat the food from trees.Sometimes we build things with the wood from trees.Can you name some things that come from trees?For example，peanuts,tomatoes,potatoes,cabbages,and carrots.How do seeds travel?风力传播风力传播by wind水流传播水流传播 by water by people or animals by themselvesHomework 背诵S的单词；复习Unit Three。Thank You for Watching
