人教版九年级英语Unit6 SectionB 第一课时教研课教案

Unit 6 When was it invented? The Second Period Section B 1a–1e

Quhe School Du Xiaoning

Teaching aims（教学目标）

一、通过学习，掌握下列词汇：sour, customer，了解以下词汇：crispy, by mistake，by mistake 二、口、笔头掌握以下句型：

1. Potato chips were invented by mistake. 2. The customer was happy in the end. 3. They were invented in 1863.

4. George wanted to make the customer happy.

三、能用过去的被动语态（肯定、否定、及疑问句形式）熟练的谈论薯片的发明。 四、学会表达由于这些创造和发明对你的生活的帮助和对生活质量提高认识。

Difficulties（难点）：用过去的被动语态（肯定、否定、及疑问句形式）熟练的谈论薯片的发明。

Teaching steps（教学步骤）

1. Warm-up and revision（课堂热身和复习） Greet the students.

Show Ss the pictures on the screen and get them to answer the question. What is the little dog eating? What does the big dog think of the ice cream? 教学设计说明：创设情景，导入新课。

2. Presentation

How do these things taste?

Ss learn some new words by talking about potato chips, lemons, cake and salted duck eggs.

Have a brainstorming by asking, Can you think of some fruit which is sweet/sour? What food is crispy/salty?

Then learn “costumer” by talking about three pictures.

教学设计说明：激活学生记忆中与食物相关的英语词汇，归类和复习学过的单词；为听力活动做铺垫。

3.Work on Section B 1a.

The words in the box describe how food can taste. Write them under the correct pictures. Some pictures have more than one word. 4. Work on 1b.

Write the name of a different food after each word. 5. Work on 1c.

Task 1: Show the picture of potato chips and answer the questions: How do the potato chips taste? Do you like them?

Do you know how they were invented?

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When were they invented ? Who were they invented by?

Task 2: Listen and circle T for true or F for false. 1. Potato chips were invented by mistake. 2. They were invented in 1863.

3. The customer thought the potatoes were not thin enough. 4. The customer said they were not salty enough. 5. George wanted to make the customer happy. 6. The customer was happy in the end. 6. Work on 1d.

Listen again. Complete the sentences.

Do you know how potato chips were invented? Potato chips _______________ by a cook called George Crum. They were invented in ____________. George Crum cut the potatoes really, really __________ and then cooked them for a long time until they were ____________. Finally he put lots of salt on them so they were ___________. 7.Read the tapescripts. Then Listen again, students repeat. 教学设计说明：跟读模仿语音和语调。 完成学习目标一、二、三 。 8.观察与思考：

通过听力训练思考下列几个词组的使用

（1）in the end意为“_________”与_____ ______相当。 They came up with a good idea _____ _____ _____. 他们终于想出了好办法。

(2) mistake n. “错误，过失”。by mistake意为______________ He put salt into his coffee______ _________. 他错把盐放入了咖啡中。 9. Work on 1e

Make a conversation about the invention of potato chips. Use the information in 1c and 1d. A: Did you know potato chips were invented by mistake? B: Wow, I didn’t know that. Who invented them? A: …

教学设计说明：利用表格帮助学生顺利完成对话，完成学习目标四 。 10. 小结。检测本课学习情况。 11. Homework

利用本课所学 ，向你周围的人用英语介绍薯条或其他发明物的的来历吧！ 教学设计说明：进一步巩固本课重点功能句。

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