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四、教学过程 ：
Step 1. Review
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.
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. Presentation
Listen to music of unit4 changes in me
Step3.1.利用ppt图片教学单词dining hall, grass, gym, ago
(1) 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.
利用let’s chant 来总结所学单词。
(2)出示10天前开的运动会的场景，引出ago的学习。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。
（3）回顾前面所学的过去时间，用金眼睛游戏来检查。
2. 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.
3. Listen the tape of Let’s learn.学生仿读。
Step 4. Communication
1. 小组读单词，开火车读单词。
2. 玩游戏。
3.检测
读一读，选一选。
（ ）1. There was a grass in the nature park five years ago.
（ ）2. People couldn’t use the Internet.
（ ）3. Now there is a gym in our city.
（ ）4. There was no computer room in our school twenty years ago.
（ ）5. At that time, people didn’t go there by bus.