1、1Unit 6 When was it invented?第 4 课时 Section B（1a 1e）I. 知识目标类别 课时要点重点单词1. crispy adj. 脆的；酥脆的；2. salty adj. 咸的；3.sour adj. 酸的，有酸味的；4.customer n. 顾客。重点句式1. -Did you know potato chips were invented by mistake?-I didnt know that. Who invented them?-Potato chips were invented by a cook called George Grum.
2、 -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。2II. 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 dont like lemons because they are too sour. 2. Lucy and Lily a
3、re twins. People often mistake them for each other.3. For a restaurant, customers are the most important.34. 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
4、下面提几个简单的问题来回顾上节课的内容：4. When was the telephone invented? _5. Can you imagine the life without telephones?_6. 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
5、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）参考案例sweet bananas; crispy chips; salty noodles; sour grapes3. 听第一遍录音，完成课本上 1c 部分的任务: Listen and circle T or F
6、 (2 分钟)1T 2F 3T 4F 5F 6T4. 听第二遍录音，完成课本上 1d 部分的任务：Listen and complete the sentences. (2 分钟)5. 听力内容巩固训练。要求学生根据所听到的内容完成下列对话。完成后要求若干学生给4出自己的答案。以巩固对听力内容的了解。 （3 分钟）Do you like potato chips? Do you know how the potato chips were invented? Now, lets listen and fill in the blanks.Potato chips were invented
7、by mistake. They were invented by a chef called George Crum. One day a customer thought the fried potatoes werent thin enough and werent salty enough. So George cut them really thin and cooked them for a long time until they were crispy. And he sprinkled a lot of salt on them so they were salty.6. 听
8、第三遍录音，并打开听力材料，全班逐句进行跟读。 （2 分钟）7. 放下听力材料，要求学生利用 1c 和 1d 的听力内容；模仿 1e 方框所给的对话编造一个有关土豆条的发明的对话练习。然后邀请 2-3 对同学当堂分角色演示。看哪一对的表现最佳。 （5 分钟）环节说明：将听、说、读、写的任务结合起来不仅锻炼了学生的语言综合运用能力，还巩固了学生对目标语言的学习、识记和运用; 薯条的发明的小故事有很强的趣味性，让学生体会到了英语学习的乐趣。当堂评价方案（详见当堂训练部分）备课资料包a. 词汇包：by mistake 错误地by mistake 是介词短语，意为“错误地；无意地；不小心地” ，指由于
9、错误的判断而千百万的失误，常在句中作状语。【备课例句】I took your bag instead of mine by mistake. 我错拿了你的手提包，还以为是我的呢。Susan forgot her key and locked herself out by mistake. 苏珊忘了带钥匙，误把自己关在门外了。【横向辐射】mistake.formistake.for把错认为, 错把当作She mistook him for the professor.她把他错当作教授了。5【课堂变式】Im sorry Ive taken your dictionary _ because the
10、y have the same colour. It doesnt matter. A. at once B. by mistake C. in general D. as well 【解析】由 because they have the same colour 可知是错拿了词典，正确答案是 B。b. 句式包：1.George wanted to make the customer happy. 乔治想让顾客开心。句中的 make 意为“使得” ，happy 是形容词，作宾语 you 的补足语，对宾语起补充说明作用，常用的结构为“make名词/代词形容词” 。【备课例句】The bad new
11、s makes her sad. 那个坏消息使得她伤心不已。A boy broke the window. It made the headmaster angry. 一个孩子打碎了玻璃。这使得校长很生气。【温馨提示】当宾语是不定式短语或从句时，多用 it 作形式宾语。I made it a condition that everybody must be on time. 我提出一个条件，人人都要准时。The heavy rain made it impossible for us to go out. 大雨使得我们无法出去。【横向辐射】make 的其他相关句式1.“make宾语n”意为使/
12、让某人 / 某物(成为)” 。【例句】We made him captain of our football team. 我们推选他作我们足球队队长。We made him our monitor. 我们选他当班长。2.“make宾语do sth”意为“使某人做某事” 。 在被动语态中，此类结构中省略的动词不定式 to 要还原。6【例句】Our teacher makes us feel more confident. 老师使得我们感到更自信了。The boy was made to work twelve hours a day. 这个男孩被迫每天干十二个小时的活。【课堂变式】What do you think her ? A. make; sad B. makes; sadlyC. made; sad D. made; sadly【解析】what 作主语时，谓语动词要用第三要称单数形式，可排除 A。再根据“make + sb. / sth. + adj.”确定选 C。sadly 是副词形式。
