教学目标：
1.读写句子：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.
2.听说认读单词different, active.
3. 听懂会说本课时的对话。
教学重点：
1.听说读写句子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.
2. different的发音较难。
教学难点：
1.听说读写句子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.
2. different的发音较难。
教具准备：
PPT
教学过程：
Step 1.预习温故（用时5分钟）
1. Go over: go cycling ice-skate play badminton
教师做动作，学生一起说出短语并造句。Go cycling, I could go cycling.
Ice-skate, I could ice-skate. Play badminton, I could play badminton.
2. 齐读Let’s learn对话并请学生翻译。
Step 2. 新课内容展示（用时15分钟）
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。
教学active 和 板书句子：Before, I was quiet. Now, I’m very active in class. 请学生说意思，然后齐读。
3.板书句子：I was short, so I couldn’t ride my bike well. Now, I go cycling every day.请学生说句子的意思，然后齐读句子，最后请学生模仿该句子说自己的变化。如
I was short, so I couldn’t play basketball well. Now, I play it 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。
Step 3.合作交流：（用时10分钟）
1．学生小组读对话。
2. 分角色朗读对话。
3. Finsh Let’s try.
4. 用P36的句子灵活运用所学单词及句子谈论家人或朋友的变化。
Step4、达标检测（用时9分钟）
作业布置
（1）完成活动手册Listen again and write
（2） Write the new words.
板书设计：
Unit4 Then and now
active different绿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.