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1. Knowledge objective:掌握对物体过去和现在的表达用法。
2. Ability goals: 能够借助图片读懂Story time，并通过新的语言环境，让学生运用所学知识提高语言交际能力。
3. The emotion goal: 通过本课学习，提高学生的环境保护意识，教育学生要学会热爱环境，保护地球。
教学
重难
点
1. Teaching Focus: 能够借助图片读懂Story time的故事
2. Difficult points: 掌握对物体过去和现在的表达的用法。
教学
准备
a recorder, tape, pictures, sentence cards, etc.
教学过程
二次备课
一、设疑自探：
Warm-up
1. Listen to the song Change in me.
2.Teacher show the pictures, and let students discribe the differences.Then ask students to discribe theirselves.
To import new lesson.
1.Teacher play the story, and let students read the story.
（三）Teacher shows the study tips:
1. Please circle the words you don’t understand. And underline the sentences you don’t understand.
2. What changes are they talking about?
3. In the future, what will happen to the earth?
二、解疑合探
（一）Display and report
Discuss in the group.
Students show the words and sentences they don’t understand, and teacher help them resolve the questions.?
Answer the questions
Teacher show the picture, help students answer these questions
（三）Teacher show the pictures, show the earth’s differences that between Then and Now. Show the question:Do you know reason that makes the earth changed?