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九上 Unit 9 When was it invented第4课时Section B 1a-2c


Unit 9 When was it invented? Section B 1a-2c Learning goals:
1. Let the students talk about different kinds of food they like and why 2. Listen to the tape and finish the exercise.


Step 1 Preview Translate the following sentences. 1. 薯条是无意中被发现的。 2. 顾客说它们不够咸。 3. 然后他在它们上面撒了很多盐,所以它们很咸。 4. 最后顾客高兴了。 答案: 1. Potato chips were invented by mistake. 2. The customer thought the potatoes weren’t thin enough. 3. And he sprinkled lots of salt on them so they were really salty. 4. The customer was happy in the end. Step 2 Warming-up
Show some pictures on the screen. Review some foods. What kind of food do you like? Please describe how the following food tastes.

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A: What kind of food do you like? B: I like …… A: Why? B: Because it’s sweet……

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Answers of 1a: potato chips: crispy, salty lemon: sour ice cream: sweet tea: sweet 1b write the names of food as many as they can. sweet: apple, orange juice, soda, cake, honey crispy: french fries, salad, lettuce salty: french fries, olives, pepperoni, pizza, popcorn sour: pickle, grapefruit 调动每个学生的积极性, 尽量复习到所有学过的食物。 引起学习本课 的兴趣。

Step 2

Doing pair work

Role play the conversation about the invention of potato chips. A: Did you know potato chips were invented by mistake? B: I didn’t know .Who invented them? A: …… Talk about some other food. Such as hamburgers, dumplings . 训练学生的对话能力,同时又为下一步听力练习做好铺垫。

Step3 listening
T: My class, have you ever eaten potato chips?
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S: Yes. T: Do you like it ? S: Yes. I like it very much. T: Do you want to know the history of potato chips? Let’s listen to the tape and know something about the potato chips (一)Listen and circle T(for true) or F(for false) 1. Potato chips were invented by mistake. 2. They were invented in 1863. T F 3. The customer thought the potatoes weren’t thin enough. T F 4. The customer said they weren’t salty enough. T F 5. George wanted to make the customer happy. T F 6. The customer was happy in the end. T F (二)Listen again. Complete the sentences. The history of potato chips ___________ that potato chips were invented by mistake? Potato chips _______by a chef called George Crum .They were invented in_____. George Crum cooked them for a long time until they T F

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__________.And he sprinkled lots of salt on them so they were _________. Answers: Did you know/were invented/1853/wre crispy/really salty. 通过听力练习和写作练习让学生明白这些创造和发明对我们的生活 的帮助和对生活质量的提高认识。 翻译探究: 1. The potato chips were invented by mistake.土豆条的发明纯属歪打正 着。 mistake n. 错误,误会,过失 【拓展】(1) mistake n. 错误,误会,过失 例如: It was a ______buying that car. 买那辆车是个错误。 (2)by mistake 表示“错误地(因粗心、遗忘等所致)”。 Sorry, I took your bag________. 对不起,我错拿了你的手提包。 (3) mistake v. 误解, 弄错 mistake ... for “错把……当作……”例如:

I________________ her sister. 我把她错认为是她妹妹。 2. The customer thought the potatoes weren’t thin enough. 顾客认为土 豆(片)不够薄。 enough adj. 足够的 修饰形容词或副词时要放在修饰词之后;但它修 饰名词时则放在名词之前; 例如: We didn’t leave___________. 我们离开得不够早。 We haven’t got____________. 我们没有足够的时间。 3.George wanted to make the customer happy. 乔治想让那位顾客高
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兴。 make v. 使……怎么样, 其后往往带复合宾语,常用句型如下: (1)主语+make+宾语+名词(做宾补) 。例如: The boss can____________. 那个老板能使那个年轻人变为一个富翁。 (2)主语+make+宾语+形容词(做宾补) 。例如: The news_____________. 这消息使她很高兴。 (3) make 之后也可节省略 to 的不定式做宾语的补足语, 其句型为: “主语+ make+宾语+do sth”。 例如: Nothing will __________my mind. 无论什么事都不能使我改变主意。 4. And he sprinkled lots of salt on them so they were salty. (P71) 然后, 他在上面撒很多盐,这样它们就咸了。 (1)sprinkle 是“撒、 洒”的意思, 常构成 sprinkle A on/over B 或 sprinkle B with A 表示“__________________”。 She sprinkled sand along the icy path.___________________________ He sprinkled vinegar on his fish and chips. _______________________ (2)salt 是 不 可 数 名 词 , 其 形 容 词 是 salty 。 在 英 语 中 , _________________,表示“充满/包含……”,其意思与原来词汇的意 思相同,只是词性不同,如 cloud—cloudy, hair—hairy, rose—rosy, sleep—sleepy 等。 答案:1. mistake/ by mistake/ mistake her for 2. early enough/ enough time 3. make the young man a rich man/ made her happy/ make me change
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4. 撒(某物)于(某物的表面)/ 她往结冰的路上撒了些沙子。/他往鱼和 土豆上洒了些醋。/很多名词后加-y 可以构成形容词 自主检测 完型填空 People all over the world eat rice. 1 people, in Asia, Africa and South

America 2 it every day of their lives. Some people almost do not eat 3 except rice. Rice is a kind of 4 . There are more than 7000 kinds of 5 rice in many countries

rice. Most kinds are water plants. Farmers

even in the southern part of Russia and in eastern Australia. No one really knows where rice 6 . Someone in China wrote about it almost 5000 7 in West Africa, 8 think

years ago. Some scientists think that rice it 9 from India and then ( ) 1. A. Thousand of million of ( ) 2. A. eat B. eats C. eaten

10 to other parts of the world. C. Millions of D.A

B. Hundreds of

D. is eaten D. nothing

( ) 3. A. everything ( ) 4. A. grass ( ) 5. A. make B. fruit B. run

B. something C. anything

C. flower D. vegetable C. keep D. grow

( ) 6. A. came from B. came to ( ) 7. A. grew ( ) 8. A. another ( ) 9. A. came B. grow

C. went from D. went to D. was grown D. others

C. is grown

B. other B. come

C. the other

C. was come D. was coming

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( )10. A. was planted

B. was taken C. was kept

D. was grown

阅读短文,从方框中选择适当的句子填在横线上,使短文连贯完整。 We all love new inventions. 1________________________. But have all these inventions really improved the quality of our lives? Picture this: You’re rushing to finish your homework on the computer. Your mobile phone rings and a QQ message from your friend appears on the screen. 2_____________________________. Now you have to stay up all night to get it done. How happy do you feel? Inventions have speeded up our lives so much that they often leave us feeling stressed and tired. Why do you think people who live far away from noisy cities, with no telephone, no car, not even any electricity often seem to be happier? 3_________________________. One family in the UK went “back in time” to see what life was like without all the inventions we have today. The grandparents, with their daughter, and grandsons Benjamin, 10and Thomas, 7. spent nine weeks in a house of the 1940s. 4__________________. The grandmother, Lyn, said, “5_______________________”. The boys said they fought less. Probably, they said, because there was less to fight over. Benjamin also noticed that his grandmother had changed from being a “trendy, beer-drinking granny to one who cooked things”.

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A. They had no washing machine, microwave, computer or mobile phone. B. Suddenly the computer goes blank and you lose all your work. C. Perhaps because they live simpler lives. D. The more things you have, the more difficult life becomes. E. They are exciting, amazing and can even change our lives. 答案; CACAD/ADDAB/EBCAD 亮点: 利于图片很直观。 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。 使用建议:让学生分组讨论学习效果会更好。

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