Unit 3 The environment and us Lesson 16 课件

课件20张PPT。UNIT 3THE ENVIRONMENT AND USLESSON 16Let’s learn… Air What is air? Can you guess?We cannot see it or touch it. But it is all around us.We can feel it when it moves.Blow up a balloon and tie it with a string.Then open it and let its mouth face you. What do you feel? Air is important.重要的People and animals need air to breathe.Plants need air to grow.Sadly, some air is not clean.People make the air dirty when they drive cars.They make the air dirty when they throw trash on the ground.Dirty air is bad for our environment. It can make people and animals ill. It can also kill plants.What do you learn from this story?Talk with your friends.Game Time!记忆大比拼！老师将单词卡片按照随意
顺序摆好，学生记忆，
之后老师随意打
乱顺序，学生根
据记忆将单词还原。Homework1.Remember these new words.
2.Read the dialogue to your parents. Thank You!