课件18张PPT。Unit 1
How tall are you?Read and writePart BLearning goals能够通过讨论图片中季节的变化回顾相关背景知识及话题词汇；
能够在故事中捕捉不同类型的信息，通过简单的推理，提炼出故事的主旨大意；
能够根据阅读所获取的信息完成填充内容梗概的活动；
能够完成读后思考和讨论题。Lead-in Look at the pictures and say the season words.spring summer Look at the pictures and say the season words.winter autumn/fallCan you describe the seasons?Read and writeSpring is coming! The sky is clearer and the sun is brighter. Can you think of any other changes? Look and tick.现在进行时表将来Wu Yifan and his family are going on a trip to
the countryside. Wu Yifan has a story to tell Robin. __________ (Title)
Little Duck is watching the sun go down. It is getting lower and lower, but his shadow is getting longer and longer.
“Why is that?” Little Duck asks his friend Old Tree. “You are older and smarter than me. Tell me——why is my shadow longer when the sun gets lower?”
Old Tree says, “That’s easy, Little Duck. The sun goes down every day, and we grow older everyday. Your shadow grows longer because you are growing taller. You are becoming a big beautiful bird!”Can you answer Little Duck’s question, Robin? __________ (Title)
Little Duck is watching the sun go down. It is getting lower and lower, but his shadow is getting longer and longer.
“Why is that?” Little Duck asks his friend Old Tree. “You are older and smarter than me. Tell me——why is my shadow longer when the sun gets lower?” Old Tree says, “That’s easy, Little Duck. The sun goes down every day, and we grow older everyday. Your shadow grows longer because you are growing taller. You are becoming a big beautiful bird!”课文解读“be+doing”现在进行时，表示“正在……”watch 观看表示“变得越来越……”影子（太阳）落山 有光和不透明的物体才会有影子
的出现。太阳的光照主要影响物体影
子的朝向和长度。
太阳的光照方向与影子朝向相反,
如果太阳在东边,那么影子就朝西边。
所以影子的朝向通常被用来判断日出
和日落的方向。
影子的长短和太阳的高低有关系,太阳低的时候,影子相对来说要长一些；太阳高的时候,影子相对来说会短一些。一天中,太阳高度在日出和日落时最低,影子也是最长的；而正午时太阳高度最高,影子为一天中最短的。知识拓展太阳与影子的关系：Read and circle.1. Choose a title for the story.
A. Little Duck’s shadow B. Old tree’s shadow
2. Who is younger?
A. The tree. B. The duck.
3. When is the duck’s shadow longer?
A. In the morning. B. in the afternoon.Read the story again and finish the dialogue.Little Duck: Old tree, the sun gets __________________，
but my shadow gets ______________________. Why?
Old Tree: That’s easy. Your shadow gets longer because you are getting __________________
and growing __________________ every day.
Little Duck: So what will happen to me ?
Old Tree: Well,…longer and longerlower and loweroldertallerThink and discuss.1. Do you agree with old tree? Why?
2. Can you answer little duck’s question?
What’s your answer?
3. Please circle the words with“-er”. Then talk
about the changes in your friends.Summary现在进行时表将来：Spring is coming! 现在进行时：Little Duck is watching the sun go down. “be+doing”现在进行时，表示“正在……”ExampleThe bus is coming! They are waiting for the bus.变得越来越……：get+形容词比较级+and+形容词比较级ExampleThe balloon gets bigger and bigger.类似的词：turn、becomeExercise( ) 1. _________ is coming. The sky is clearer and the day is warmer.
A. Spring B. Winter C. Summer
( ) 2. The duck’s shadow is _________ when the sun gets lower.
A. shorter B. longer C. older
( ) 3. He’s_________ a football match on TV.
A. looking B. seeing C. watching单项选择。ABCHomeworkRetell the story in dialogue with your partner.
