Unit 9 When was it invented? The First Period Section A 1a–2c
安徽省颍上县鲁口镇中心学校 茹龙强 2017.6.7
Teaching aims（教学目标）
一、通过学习，熟练掌握以下词汇：style, project, pleasure, mention 二、通过问答，掌握以下句型：
1. A: When was the telephone invented? B: I think it was invented in 1876. 2. A: What are they used for?
B: They’re used for seeing in the dark.
三、1.正确运用被动语态谈论重要的发明的历史和用途。
2.掌握一般过去时态的被动语态, 由 was/were +过去分词构成。学会单词invent, 以及be used for 的用法
四、通过熟悉我们周围经常使用发明物的历史来开阔眼界，丰富自己的阅历，使自己养成勤于思考，善于总结的好习惯。
（本节课的生词较少，而且单词的拼写比较简单，所以学生学起来不会感到困难，如果班级学生的水平较高，可以鼓励学生当堂掌握。）
Difficulties（难点）：被动语态/be used for 的用法。 Teaching steps（教学步骤）
1. Warm-up and revision（课堂热身和复习）
(1）Discuss in groups:Which do you think is the most useful invention? (2) Discuss in groups: In what order do you think they were invented? A: I think the TV was invented before the car. B: Well, I think the TV was invented after the car.
教学设计说明：利用图片引出话题， 创设情景 ，激活学生思维。 2. Presentation（呈现新知识） Work on 1b. Listen and answer:
Which inventions are they talking about ?
Listen again and match the inventions with the years.
3. 再听一遍录音，选择方框中合适的短语完成下面的对话。 Alice: Was your life very difficult when you were a kid? Grandma: Oh, not really. Why?
Alice: Well, you didn’t ___________ like a telephone, right?
Grandma: Of course we did! How old do you think I am? The telephone was invented in 1876. You ___________, Alice!
Alice: Ha, ha! How about cars? They weren’t invented yet, were they? Grandma: Yes, they were. Cars were invented in 1885. __________. Alice: Well, did you have a TV?
Grandma: No, we __________. They were expensive in those days. The TV was invented around 1927, I think.
Alice: Well, I know that you didn’t have a computer, because we learned in school that personal computers __________in 1976.
Woman: You’re right. But I have one now!
教学设计说明：由易到难，训练听力的同时熟悉本课可功能句。 4. Pair work
A: When was the telephone invented? B: I think it was invented in 1876.
教学设计说明：有输入变为输出，检查学生掌握本课功能句的情况。 完成学习目标4 5. Work on 2a
Look at the picture below. What are the things on the table?
教学设计说明：让学生熟读短语并明白其汉语大意。为后面的听力扫清生词障碍。 6. Listen and number the inventions [1–3] in the order you hear them. 7. Listen again and complete the chart below
8.
观察与思考：
通过刚才的听力训练，我们来总结一下
be used for意为“被用来做……”，介词for表示目的和用途，后面接______或______。例如：Knives are used for ______________ 刀子是用来切东西的。 练习：翻译句子
(1) 它用来在黑暗中照明。______________________________ (2) 钢笔是用来写的。_________________________________ 完成学习目标1、2、3 9. Pair work
用上面表格中的信息编对话。谈论时可借助如下对话形式： A: What are they used for?
B: They’re used for seeing in the dark. 10. Pair work
利用所给信息 ，组织一下对话。
A: When was ____________ invented? B:
A: Who invented it? B:
A: What are they used for? B:
11.小结。检测本课学习情况。 12. Homework
针对同学们所展示的最有用的发明，介绍发明者，何时发明的，有何用途等写一篇对话。可用下面的语言结构：
What’s the most useful invention? Who invented it? When was it invented? What is it used for?