教学目标：
听说认读单词：dining hall,gym,grass,…years ago,…months ago,last year,last month.
学习句型：There was/were…We didn’t have…及其一般过去时态的具体运用。
学生会根据具体年代判断与之相符的事物。
学唱歌曲《Changes in me》
教学重点：
过去时间状语的运用。
教学难点：
句型There was/were…的具体运用。
教具准备：
PPT 图片
教学过程：
Step 1.预习温故（用时5分钟）
1. Go over the phrases of Unit 3: ate fresh food, went swimming, took pictures, bought gifts, rode a horse, rode a bike , went camping, hurt my foot , went fishing
教师说短语的第一个单词，学生说出短语，并造一个句子。如T: took. Ss: Took pictures, I took pictures last weekend. （ 边做动作边说）
2. Free talk.
T: How was your weekend?
Ss: It was fine. http://ww w.xkb 1.com
T: Where did you go? 、
Ss: I went to ...
T: How did you go there?
Ss: By ...
T: What did you do there? Ss: I went fishing. / ...
Step 2. 新课内容展示（用时15分钟）
教学单词dining hall, grass, gym, ago.
Show the picture of grass. T: What’s this? Ss: It’s grass. 板书grass并教读。Chant: Grass, grass. Play football on the grass. 以同样的方法教学dining hall, gym. Chant: Dining hall, dining hall. Have lunch in the dinning. Gym, gym. Play basketball in the gym.
教学单词ago及词组。.. years ago, ... months ago. 教师先说几个句子让学生感受。T: I went fishing three days ago. I went to Beijing two years ago. 板书并教读ago。 让学生说出。.. years ago, ... months ago的意思并造句。
出示两张新旧学校图片介绍并板书：There was no gym in my school twenty years ago. Now there’s a new one in our school. 教读。学生学说句子，描述学校以前和现在的样子。如：There was no computer room ten years ago. Now there’s a new one in our school.
Play the tape of Let’s learn.学生仿读。
Step 3.合作交流：（用时10分钟）
小组读单词，开火车读单词。
学生灵活运用所学单词句子。
完成Find the mistakes.学生先自己读句子，然后小组合作找出错误的地方。
学唱歌曲《Changes in me》
Step4、达标检测（用时9分钟）
作业布置
1.抄写并背诵dining hall, gym, grass, years ago, months ago, last year, last month
2.用本课时句子写一个对话。
板书设计：
Unit4 Then and now h
dining hall, gym, grass, ago, ...years ago, ... months ago
There was gym in my school twenty years ago.
Now there’s a new one in our school.