Unit 3 Care for the EarthPart ALead-inWhich picture is more beautiful?Green earth 绿色地球 Gray earth 灰色地球 Today we are going to learn how to care for our green earth.New words care forearthpick flowersdirty关爱；照料地球采；摘砍伐；把…砍倒cut down摘花make the air dirty脏的waste污染空气pick 浪费drivedrive a carmoreWorld Car Free Day驾驶；（开车）开车更多的世界无车日have to必须；不得不something某事；某物think想；认为New wordsRead and think Bird ： Help ！ Help ！Colin : What’s the matter , little bird? Bird : I can’t find my home. What should I do?Colin : Oh, poor little bird! Fish : Help! Help!Wu Chen: What’s the matter, little fish? Fish : The water is too dirty. I can’t live here.Wu Chen: Oh, poor little fish!Why does the little bird and little fish say help?Little bird: Because the trees are cut down( 被砍伐 ) ，the little bird loses its home — forest. So it calls for help.Little fish: Because the water is polluted( 被污染 ), the river becomes dirty. So the fish has no place to live.Look and circle What should we do ？Let’s learnpick flowers 摘花We should not pick flowers.cut down trees 砍伐树木Cutting down trees is bad for our earth. make the air dirty 污染空气The new factory makes the air dirty.waste water 浪费水Water is priceless( 无价的 ), we should not waste water.drive a car 驾驶；开车My father can drive a car.the earth 地球We should protect( 保护 ) the earth.Are these behaviors good for our earth?No, they are bad for our earth .Picking flowers and cutting down trees make our forest less and less( 越来越少 ) . Driving cars make the air dirty.We should stop these bad behavior so that we have a good earth.Let’s talk Mom : Some more soup , dear?Su Nan : Thanks , Mom. But I ha...
