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课件网) （人教新目标版）九年级全 Period 4 Section B 1a - 1e Unit 6 When was it invented Learning objectives Key words & phrases： sour, customer by mistake, in the end Key sentences： 1.Potato chips were invented by mistake. 2.Potato chips were invented by a cook called George Crum. Key structure： S＋was/were＋past participle＋by… eg：Potato chips were invented by a cook called George Crum. crispy adj. 脆的；酥脆的 sour adj. 酸的；有酸味的 salty adj. 咸的 New Words customer n. 顾客；客户 We offer customers a free home delivery service. 我们为客户提供免费送货上门的服务。 by mistake 错误地；无意中 He opened Mary’s letter by mistake. 他不小心拆了玛丽的信。 New Words Watch the video and check your answers. 1. Which one is sour A. red apple B. green apple 2. Which one is salty A. apple pie B. French fries 3. Which one is sweet A. honey B. egg Choose the correct answer. Lead in The words in the box describe how food can taste. Write them under the correct pictures. Some pictures have more than one word. 1a P45 sweet crispy salty sour _____ _____ _____ _____ _____ _____ _____ _____ crispy salty sour sweet salty Pre-listening Write the name of a different food after each word. P45 1b watermelon fried chicken salted peanuts (咸花生) vinegar Pre-listening What are they talking about Maybe they are talking about potato chips. Pre-listening Listen and circle T for true or F for false. 1c P45 T F T F T F 1. Potato chips were invented by mistake. 2. They were invented in 1863. T F 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. T F T F back in 1853. thin didn’t want While-listening Listen again. Complete the sentences. P45 1d The History of Potato Chips were invented 1853 thin crispy really salty 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 _____. While-listening 一般过去时的被动语态基本结构: _____ was/were+动词过去分词 Post-listening Section B, 1c, 1d Boy 1: Hey, did you know that potato chips were invented by mistake Boy 2: Really What do you mean Boy 1: Well, here on the bag it says that they were invented by a cook called George Rum. Boy 2: When was that Boy 1: Oh, it was back in 1853. Boy 2: So, why was it an accident Boy 1: Well, one day, a customer came into the restaurant where George worked. He ordered a plate of fried potatoes. When the potatoes came, he said they were cut too thick and sent them back to the kitchen. Boy 2: So what happened Boy 1: Well, George was angry, so he cut the potatoes really, really thin, and he cooked them for a long time until they were crispy. And he put lots of salt on them so they were rea ... ...
