1、Unit 4 Isnt It Wonderful? Passage B The Invention of the Microwave Oven ReviewReview 1. blog 微博 2. electronic products 电子产品 3. be out of 不在. 4. recharge 充电 5. disposable 一次性的. 6. programme 程序 7. in ones opinion 按照某人的看法a Microwave oven ？Who is the inventor of the microwave oven?Percy Spencer(1894-197
2、0)中文名：珀西中文名：珀西.斯本塞斯本塞 美国人，发明家，微波炉的美国人，发明家，微波炉的发明者。发明者。 The Invention of the Microwave Oven New words and Expressions 1. generate 产生 2. high-frequency 高频率的 3. melt 熔化 4. engineer 工程师 5. curious 好奇的 6. rise( rose , risen ) 增加 7. explode( explosion) 爆炸 8. light (lighted/lit, lighted/lit) 照亮 9. scientif
3、ic 科学的 10. conclusion 结论 11. exposure 暴露 12. thus 因此 13. practical 实际的 14. domestic 家用的 15. feed (fed, fed ) 提供（原料） 16. intrigue v.引发的好奇心 intrigued 好奇的 17. electromagnetic 电磁的New words and Expressions 1. have no idea 不知道 2. get close to 靠近 3. pop out 喷出 4. be joined by 和.一道 5. light up 闪亮，发光 6. work
4、 on 从事 7. large quantities of 大量的 8. come on the market 面市/上市 When Was the microwave oven invented ? In 1946 Sum up the important events in the Sum up the important events in the invention of the microwave oven, using the invention of the microwave oven, using the clues on the left.clues on the left
5、. Clues Events chocolate bar It started to melt when it got too close to an electronic tube. popcorn kernels egg metal box Clues Events chocolate bar It started to melt when it got too close to an electronic tube. popcorn kernelsPopcorn was popping out over the lab floor when placed near the electro
6、nic tube. egg metal box Clues Events chocolate bar It started to melt when it got too close to an electronic tube. popcorn kernelsPopcorn was popping out over the lab floor when placed near the electronic tube. eggIt started to shake and in the end exploded and splashed all over Spencers colleagues
7、face when put near the electronic tube. metal box Clues Events chocolate bar It started to melt when it got too close to an electronic tube. popcorn kernelsPopcorn was popping out over the lab floor when placed near the electronic tube. eggIt started to shake and in the end exploded and splashed all
8、 over Spencers colleagues face when put near the electronic tube. metal box The microwave oven was invented.Notes:, Spencer placed popcorn kernels near the electronic tube , soon popcorn was out over the lab floor. 好近旁奇之下，斯宾塞将爆米花谷粒放在电子管近旁，很快爆米花蹦的实验室里满地都是。 A. intrigued 是形容词，“着迷的，好奇的”。 The boy was int
9、rigued by the legend of dragons. B. pop是动词，“发出砰砰声” The balloon popped when the cat put its paw on it. Notes: 3 . Engineers went to Spencers hot new idea, developing and refining it for use. 工程师们开始忙于斯宾塞的这个新主意，对之进行开发和完善，使之能够具有实际用途。 A. work on sth. “努力改善” You should work on your skills in public speaki
10、ng . 你应该努力提高你公开演讲的能力。 B. practical “实际/用的” Thats a clever invention, but not very practical. Notes: 2. Spencer designed a metal box with a hole into which he microwave power. 斯宾塞设计了一个金属盒，在上面开了一个洞，他从这个洞里将微波能导入盒中。 A. feed 喂养 We brought along pieces of old bread and fed the birds. B. 本句中“提供（原料） The fir
11、e is dying. Will you feed it with some wood? 火快灭了，你能给里面添点儿柴吗？Careful ReadingCareful Reading Read the passage again and choose the best answerRead the passage again and choose the best answer 1. Spencers chocolate bar started to melt when it was_. a. near an electronic oven b. far away from an electr
12、onic tube. c. near an electronic tube.Careful ReadingCareful Reading Read the passage again and choose the Read the passage again and choose the best answerbest answer 2. What event confirmed Spencer that microwave energy could cook food quickly? a. The exploding egg. b. The popcorn kernels . c. The
13、 colleague .Careful ReadingCareful Reading Read the passage again and choose the Read the passage again and choose the best answerbest answer 3. What did Spencer feed into the metal box besides food? a. High pressure. b. An electromagnetic field . c. Microwave powerCareful ReadingCareful Reading Rea
14、d the passage again and choose the Read the passage again and choose the best answerbest answer 4. What happened when food was placed in the box and microwave energy was fed in ? a. The temperature of the food rose. b. The temperature of the food remained the same . c. The temperature of the food dropped. Sum up Sum up 1. Words and Expressions 2. Time 3. Inventor 4. Procedures 1. Finish the related exercise on the exercise-book . 2. Try your best to remember the words and expressions appeared during our class. Homework :
