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教学难点：
单词different注意发音
教学准备：
1、PPT
2、学生准备本课时的单词卡片。
教学过程:
一：1、Let’s try.
Fill in the blanks.
2、Let’s talk
（1）播放PPT，整体感知对话并回答问题。
(2)教师请学生带着问题看动画或阅读文本获取信息
3 教学different.
出示自己小时候的照片，T: Who is she? Guess. T: It is me. At that time, I had short hair and I was fat. Now I am different. All of you are different now.板书different,请学生说出它的意思，并教读。最后请学生模仿该句子说自己的变化。同样教学active：Before, I was quiet. Now, I’m very active in class.
I was short, so I couldn’t ride my bike well. Now, I go cycling every day.
4.学生自己读对话，回答问题：How did Mike change?
5. 学生讲解对话，教师答疑。
6.放录音，学生跟读。
7组织学生分角色朗读并表演对话。
二 .合作交流：
1．学生小组读对话。
2. 分角色朗读对话。
三：Homework
板书设计：
Unit4 Then and now
active different
Before, I was quiet. Now, I’m very active in class.
I was short, so I couldn’t ride my bike well. Now, I go cycling every day.