九年级英语全册 Unit 6 When was it invented（The Third Period—Section B(1a－1e)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

The Third Period—Section B(1a－1e)

Teaching Important Points　【教学重点】
　Key words & phrases：
　sour，customer
by mistake，in the end
　Key sentences：
　1.Potato chips were invented by mistake.
　2.Potato chips were invented by a cook called George Crum.
　Key structure：
　S＋was/were＋past participle＋by…
eg：Potato chips were invented by a cook called George Crum.
Teaching Difficult Points　【教学难点】
　 ★Learn more participle verbs to say the passive voice.
Teaching Aids　【教学工具】
　A tape recorder，CAI or multimedia courseware.
Teaching Steps　【教学过程】
★Step 1　Leading in　【新课导入】
1．Greeting
Greet the class.
2．Brainstorming
Quickly ask questions about how tea was invented.
3．Practice rewriting active sentences into passive voice.
★Step 2　Cooperative inquiry　【合作探究】
1．Finish the task in 1a
①Show pictures of potato chips，lemon，ice－cream，and salted duck eggs.Talk with the class about these foods and ask students to describe their taste.
②Read and learn the new words.
2．Finish the task in 1b
①Do a brainstorming：
T：What other fruit is sweet/sour？What food is crispy/salty？Help them to write the words in the list in 1b.
②Ask different students to write their lists on the blackboard.
③Ask some students：
Do you like lemon？How about its taste?
Is the apple sweet？…
3．Finish the task in 1c
①Look at the sentences in 1c.Predict what we are going to hear.
②Play the recording for the first time.Students listen and try to get the rough meaning.
③Play the recording for the second time and students circle T or F.
④Play the tape once again.Check their answers.
4．Finish the task in 1d
①Look at the passage in 1d.Play the recording for the fourth time.Get the students to fill in the blanks in 1d.
②Read aloud the passage to see how they work.
5．Finish the task in 1e
★Step 3　Homework
1．Make conversations with other students talking about how potato chips were invented after class.
2．Write a conversation to talk about something else.
3．Translate the following sentences into English.
(1)薯片是怎么发明出来的？
________________________________________________________________________
(2)那种食物甜脆可口。
________________________________________________________________________
(3)太咸的食品不受欢迎。
________________________________________________________________________
Board Design　板书设计
Unit 6　When was it invented?
Section B(1a－1e)
How ware potato chips invented?
by mistake，by accident
sweet：
crispy：
salty：
sour：
Teaching Reflection　【教学反思】
　　　When we talk about food，we should learn how to describe their taste.So we do a brainstorming to practice the food names and their tastes.In this period，the students should practice the passive voice in listening to the story about how potato chips were invented.And then get them to listen and speak.In this way they can improve their capacity of language organization and oral output while listening and speaking practice.Students must do some writing practice after they have learned the new items.So we can give them some written work to do after they listen to the story and learn the new words in the part.