九年级英语全册 Unit 6 When was it invented Section B（1a-1eSelf Check）教案 （新版）人教新目标版-（新版）人教新目标版初中九年级全册英语教案.doc

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 tense"
Eg. It was invented by a great man.
(2) new words and phrases:
crispy sour by mistake customer
三、Teaching difficult points:
★sentences: "the passive voice of past tense"
Eg. 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 steps
Step1: Review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 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 the new words and expressions
1. 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 PPT7
Step4: Write the name of a different food after 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 F
2. 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. George wanted to make the customer happy. T F
6. The customer was happy in the end. T F
Step 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 the 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 didn’t know that. Who invented them?
A: ...
Step8: Self Check
1. Complete the passage with the correct forms of the words in the box.
On PPT12-14
Step 9:Summary
(1) sentences: "the passive voice of past tense"
Eg. It was invented by a great man.
(2) new words and phrases:
crispy sour by mistake customer
Step 11: Homework
1. Remember the new words, and we are going to have a dictation tomorrow
2. Preview section B, 2b
七、 Board Design
Unit 6 When was it invented?
Section B，1a-1e & Self Check
1. sentences: "the passive voice of past tense"
Eg. It was invented by a great man.
2. new words and phrases:
crispy sour by mistake customer