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1. Sing a song : My school
2. 复习单词：classroom, teacher’s office. library. art room. playground.
Step 2. 新课内容展示
一．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.
(2)Let’s chant.
(3)教学单词ago及词组... years ago, ... months ago.last year,last month.
出示课文插图和句子：There was gym in my school twenty years ago. 引出单词ago，教学单词 ，让学生说出... years ago, ... months ago的意思并造句，
教学句子：There was gym in my school twenty years ago.
Now there’ s a new one in my school..
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… years ago. Now there’s… in our school.
教师带读，然后让学生读。
出示两幅图片让学生对比两幅图的不同，用There was no…in the twenty years ago.Now there is a new one in the school.
小结：
There is /are (no)…
There was/were(no)…的表达和用法。
Step 3.巩固和拓展
Find the Mistake.
（1）出示课文的插图，师：This is the picture of Tang Dynasty,there were nomany things at time, can you find them out?让学生先自己读句子，然后小组合作找出错误的地方，引导学生灵活运用所学单词句子。
(2)总结句子：There was/were no…
People didn’t go by…
People couldn’t use the …
Step4、作业。
1.抄写本课时的新单词和完成相对应得练习册。
2.Talk about the changes in our school.
板书设计：
Unit4 Then and now
Part A Let’s learn
grass gym dining hall