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---I didn’t know that. Who invented them?
---Potato chips were invented by a cook called George Grum.
---我不知道，是谁发明的?
---土豆条是由一个叫George Grum的厨师发明的。
2. The customer thought the potatoes were not thin enough.顾客认为土豆不够薄。
3. Finally he put lots of salt on them so they were salty enough. 最后他在他们上面撒了许多盐以使他们足够咸。
I. 知识目标
II. 课堂环节
§自主学习方案
【新词自查】
根据句意及首字母提示完成单词。
1. I don’t like lemons because they are too sour.
2. Lucy and Lily are twins. People often mistake them for each other.
3. For a restaurant, customers are the most important.
4. The fish was too salty because my mom put too much salt on it.
5. We often put the food into the fridge to keep it fresh in summer.
§课堂导学方案
回顾：在前面的课程我们已经学习并了解了几种有用的发明，它们在很大程度上改变了我们的生活，使我们的生活更丰富多彩。下面提几个简单的问题来回顾上节课的内容：
When was the telephone invented?
______________________________________________
Can you imagine the life without telephones?
______________________________________________
What do you think is the most helpful invention?
______________________________________________
4. What would you most like to invent if you could?
______________________________________________
环节说明：课前的师生问答互动不仅让学生回顾了上节课的内容，巩固了被动语态，同时，让他们知道创新和发明可以改善人类的生活，要勇于开拓、创新。
Step 2完成教材1a-1e的任务
1. 要求学生翻开课本P45，迅速阅读1a部分的内容。并按要求完成课本上相应的任务in 1a. 然后要求4名同学给出自己的答案，并进行个读，齐读。（2分钟）
要求学生完成1b部分的任务：Write the name of a different food after each word .然后邀请几名同学给出自己的答案。并把收集的答案列举在黑板上。（4分钟）