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1、Unit 6 When was it invented? Section B，1a-1e & Self Check一、Teaching Aims: 1.to learn and to use new words crispy sour by mistake customer 2.to be able to use the passive voice of past tense二、Teaching key points: (1) sentences: the passive voice of past tenseEg. It was invented by a great man. (2) ne
2、w words and phrases: crispy sour by mistake customer 三、Teaching difficult points:sentences: the passive voice of past tenseEg. It was invented by a great man.四、Teaching Aids: 1. a tape recorder 2. the blackboard 3. a computer with PowerPoint 五、the first period (for one class)六、Teaching stepsStep1: R
3、eview八大时态被动语态八大时态一般现在时：主语+动词原形/ 单三主语+动词的单三形式一般过去时：主语+动词的过去式 现在进行时：主语+am/is/are/+v-ing 过去进行时：主语+was/were+v-ing 一般将来时：主语+will/shall+动词的原形 主语+be going to+动词的原形 过去将来时：主语+would+动词的原形 主语+was/were going to+动词的原形 现在完成时：主语+have/has+动词的过去分词 过去完成时：主语+had+动词的过去分词 八大时态对应的八大被动语态一般现在时的被动语态：主语+am/is/are/+动词过去分词+by
4、sb.(sb为宾格)一般过去时的被动语态：主语+was/were+动词过去分词+by sb.现在进行时的被动语态：主语+am/is/are/+being+动词过去分词+by sb过去进行时的被动语态：主语+was/were+being+动词过去分词+by sb.一般将来时的被动语态：主语+will/shall+be+动词过去分词+by sb.过去将来时的被动语态：主语+would+be+动词过去分词+by sb.现在完成时的被动语态：主语+have/has+been+动词过去分词+by sb.过去完成时的被动语态：主语+had+been+动词的过去分词+by sb.Step2: Learn t
5、he new words and expressions1. crispy adj. 脆的；酥脆的 2. sour adj. 酸的；有酸味的 3. by mistake 错误地；无意中4. customer n. 顾客；客户Step3: The words in the box describe how food can taste.Write them under the correct pictures. Some pictures have more than one word. On PPT7Step4: Write the name of a different food after
6、 each word.sweet_banana_ crispy_salty_ sour_Step 5: Listen and circle T for true or F for false. 1. Potato chips were invented by mistake. T F2. They were invented in 1863. T F 3. The customer thought the potatoes were not thin enough. T F 4. The customer said they were not salty enough. T F 5. Geor
7、ge wanted to make the customer happy. T F 6. The customer was happy in the end. T FStep 6: Listen again. Complete the sentences. The History of Potato Chips Did you know that potato chips were invented by mistake? Potato chips_ by a cook called George Crum. They were invented in_. George Crum cut th
8、e potatoes really, really_ and then cooked them for a long time until they were_. And he put lots of salt on them so they were_.Step7: Make a conversation about the invention of potato chips. Use the information in 1c and 1d.A: Did you know potato chips were invented by mistake?B: Wow, I didnt know
9、that. Who invented them?A: .Step8: Self Check1. Complete the passage with the correct forms of the words in the box.On PPT12-14Step 9:Summary(1) sentences: the passive voice of past tenseEg. It was invented by a great man. (2) new words and phrases: crispy sour by mistake customer Step 11: Homework1
10、. Remember the new words, and we are going to have a dictation tomorrow2. Preview section B, 2b七、 Board DesignUnit 6 When was it invented?Section B，1a-1e & Self Check1. sentences: the passive voice of past tenseEg. It was invented by a great man.2. new words and phrases: crispy sour by mistake customer
