九上 Unit 9 When was it invented第4課時(shí)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 why2. Listen to the tape and finish the exercise.Step 1 Preview Translate the following sentences.1. 薯?xiàng)l是無(wú)意中被發(fā)現(xiàn)的2. 顧客說(shuō)它們不夠咸3. 然后他在它們上面撒了很多鹽，所以它們很咸4. 最后顧客高興了答案：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-upShow some pictures on the screen. Review some foods.What kind of food do you like? Please describe how the following food tastes. A: What kind of food do you like?B: I like ……A: Why?B: Because it’s sweet……Answers of 1a: potato chips: crispy, salty lemon: sour ice cream: sweet tea: sweet1b write the names of food as many as they can.sweet: apple, orange juice, soda, cake, honeycrispy: french fries, salad, lettucesalty: french fries, olives, pepperoni, pizza, popcornsour: pickle, grapefruit調(diào)動(dòng)每個(gè)學(xué)生的積極性，盡量復(fù)習(xí)到所有學(xué)過(guò)的食物。

引起學(xué)習(xí)本課的興趣Step 2 Doing pair workRole 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 .訓(xùn)練學(xué)生的對(duì)話能力，同時(shí)又為下一步聽(tīng)力練習(xí)做好鋪墊Step3 listeningT: My class, have you ever eaten potato chips?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.?? T?? F 2. They were invented in 1863. T?? F3. The customer thought the potatoes weren’t thin enough. T?? F4. The customer said they weren’t salty enough. T?? F5. George wanted to make the customer happy. T?? F6. 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 __________.And he sprinkled lots of salt on them so they were _________.Answers: Did you know/were invented/1853/wre crispy/really salty.通過(guò)聽(tīng)力練習(xí)和寫作練習(xí)讓學(xué)生明白這些創(chuàng)造和發(fā)明對(duì)我們的生活的幫助和對(duì)生活質(zhì)量的提高認(rèn)識(shí)。

翻譯探究：1．The potato chips were invented by mistake.土豆條的發(fā)明純屬歪打正著mistake n. 錯(cuò)誤，誤會(huì)，過(guò)失【拓展】(1) mistake n. 錯(cuò)誤，誤會(huì)，過(guò)失 例如：It was a ______buying that car. 買那輛車是個(gè)錯(cuò)誤 (2)by mistake 表示“錯(cuò)誤地（因粗心、遺忘等所致）”Sorry, I took your bag________. 對(duì)不起，我錯(cuò)拿了你的手提包3) mistake v. 誤解，弄錯(cuò) mistake ... for “錯(cuò)把……當(dāng)作……”例如：I________________ her sister. 我把她錯(cuò)認(rèn)為是她妹妹2. The customer thought the potatoes weren’t thin enough. 顧客認(rèn)為土豆（片）不夠薄enough adj. 足夠的 修飾形容詞或副詞時(shí)要放在修飾詞之后；但它修飾名詞時(shí)則放在名詞之前； 例如：We didn’t leave___________. 我們離開(kāi)得不夠早We haven’t got____________. 我們沒(méi)有足夠的時(shí)間。

3．George wanted to make the customer happy. 喬治想讓那位顧客高興make v. 使……怎么樣， 其后往往帶復(fù)合賓語(yǔ)，常用句型如下：（1）主語(yǔ)+make+賓語(yǔ)+名詞（做賓補(bǔ)）例如：The boss can____________. 那個(gè)老板能使那個(gè)年輕人變?yōu)橐粋€(gè)富翁2）主語(yǔ)+make+賓語(yǔ)+形容詞（做賓補(bǔ)）例如：The news_____________. 這消息使她很高興3）make 之后也可節(jié)省略to 的不定式做賓語(yǔ)的補(bǔ)足語(yǔ)，其句型為：“主語(yǔ)+ make+賓語(yǔ)+do sth” 例如：Nothing will __________my mind. 無(wú)論什么事都不能使我改變主意4. And he sprinkled lots of salt on them so they were salty. (P71) 然后，他在上面撒很多鹽，這樣它們就咸了1)sprinkle 是“撒、灑”的意思，常構(gòu)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是不可數(shù)名詞，其形容詞是salty。

在英語(yǔ)中，_________________，表示“充滿/包含……”，其意思與原來(lái)詞匯的意思相同，只是詞性不同，如cloud—cloudy, hair—hairy, rose—rosy, sleep—sleepy等答案：1. mistake/ by mistake/ mistake her for2. early enough/ enough time3. make the young man a rich man/ made her happy/ make me change4. 撒(某物)于(某物的表面)/ 她往結(jié)冰的路上撒了些沙子/他往魚(yú)和土豆上灑了些醋/很多名詞后加-y可以構(gòu)成形容詞自主檢測(cè)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 rice. Most kinds are water plants. Farmers 5 rice in many countries 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 years ago. Some scientists think that rice 7 in West Africa, 8 think it 9 from India and then 10 to other parts of the world.( ) 1. A. Thousand of B. Hundreds of C. Millions of D.A million of( ) 2. A. eat B. eats C. eaten D. is eaten( ) 3. A. everything B. something C. anything D. nothing( ) 4. A. grass B. fruit C. flower D. vegetable( ) 5. A. make B. run C. keep D. grow( ) 6. A. came from B. came to C. went from D. went to( ) 7. A. grew B. grow C. is grown D. was grown( ) 8. A. another B. other C. the other D. others( ) 9. A. came B. come C. was come D. was coming( )10. A. was planted B. was taken C. was kept D. was grown閱讀短文，從方框中選擇適當(dāng)?shù)木渥犹钤跈M線上，使短文連貫完整。

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”.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亮點(diǎn)：利于圖片很直觀。

通過(guò)熟悉我們周圍經(jīng)常使用發(fā)明物的歷史來(lái)開(kāi)闊眼界，豐富自己的閱歷，使自己養(yǎng)成勤于思考，善于總結(jié)的好習(xí)慣使用建議：讓學(xué)生分組討論學(xué)習(xí)效果會(huì)更好。