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1、江西省萍乡市芦溪县宣风镇中学九年级英语全册 Unit 9 When was it invented Section B 1a 1b 2a 2b 2c 3a学案（无答案） 人教新目标版导学目标:1基础知识目标： 1）掌握1a-3a的重点词汇及短语。 bush remain notice produce pleasant mixture by mistake in the end by accident fall into in this way according to 2）重点句型： Potato chips were invented by mistake. The emperor noti
2、ced that the leaves in the water produced a pleasant smell.3) 掌握一般过去时被动语态。2能力目标：使学生学会正确运用被动语态谈论身边的事物3、 学习策略（Learning strategies）: Scan reading 4、情感目标：通过熟悉我们周围的发明物的历史来开阔眼界，丰富自己的阅历使自己养成勤于思考，善于总结的好习惯。导学过程一、自主预习1)预习以下单词和短语1脆的_ 2咸的_ 3酸的_ 4错误的_ 5厨师_ 6撒，洒_7 厨师 _ 8 古代_ 9.留下；保持不变_10 偶然地_ 11 落入；陷入_ 12用这种方法_ 1
3、3.按照；视。而定_ 14错误地_2)单项选择1. Wood can be used for _ desks .A making B to make C made D make 2. _ Do you think the light bulb was invented _ ?_ No, I dont think so .A by mistakes B by mistake C for mistake D with nistakes 3. I think potato chips are not _ .A thinner B thin enough C enough thin D thinner
4、 enough 4. The boy makes the teacher _ .A angry B angrily C happily D angrilier5. He sprinkled lots of _ on them so they were really _ .A salty, salty B salt, salt C salty, salt D salt ,salty二、学案导学Step1. Greeting and check the homework.Step 2. Free talk:Ask the students to practices talking to each
5、other about some inventions.A: What do you think is the most helpful invention?B:I think the most helpful invention isA: Why do you think so?B: Well, it gives meStep 3 Presentation1. Show some pictures of food and drink. Ask students what they are.2.Then ask the students to describe how food tastes.
6、 3.Learn some new words: sweet, crispy, salty, sour, delicious, hot, awful, niceStep4. Finish the task of 1a and 1bStep5. Listening practice2a. Listen and circle “T” or “F”.2b. Complete the sentences.Languages points:in the end by mistake by accident according toStep6. 2c Pair wo rk : A: Do you know
7、 that potato chips were invented by mistake?B: I dont know.A: They were invented by a chef called George Crum.B: When was that? A: It was invented back in 1853.B: Was it an accident?A: A customer sent back his plate of fried potatoes because they were cut too thick. George cut the potatoes really, r
8、eally thin. And he cooked them for a long time until they were crispy. He sprinkled lots of salt on them so they were really salty. B: Did the customer loved them?A: Yes, they asked for more. Everyone was ordering thinly-sliced, crispy, salty potato chips.B: We like them, too. A: So do I.Step7 3a Re
9、ading practice 1. Listen to the passage first.2. Give students a few minutes to read the passage and try to find the answers to the questions.3. Explain some language points.Step8 Go over the whole lessons.四、课堂测评（一）根据首字母填词 1 I took your dictionary by m_ .2 The milk is s_ .You cant drink it any more
10、.3 Mum added salt to the soup , but it wasnt s_ enough .4 Do you know the movie star c_ Liu Ruoying ?5 P_ are used for making potato chips .（二）用正确单词填空。1Theyd like to be _ (chef) one day .2 I _ (tell) that our school team won the game yesterday .3 Last year ,vegetables _ (grow) in the garden by Nick
11、and he _ (sell) them himself .4 Liu Mei _ ( not have ) breakfast yesterday morning .（三）完成句子，每空一词 。 1 你昨天错拿了我的手机 。You took my mobile phone _ _ yesterday .2 最终一切都会弄清楚的 。Everything will be found out _ _ _ .3 你能尝出汤里有什么怪味吗？Can you _ _in the soup ?4 这种机器是被用来扫地的。This machine _ _ _sweeping the floor .你的车是国产的吗？your car China ？ 3
