Unit 9 When was it invented?第3课时Section B 1a2c 一背记单词和词组1. 脆的 2. 咸的3. 酸的 4. 错误5. 厨师 6. 撒7.错误地 8. 偶然地9. .的历史 二.听力训练来源:www.shulihua.netBoy1: Hey, did you know that were invented ? Boy2: Really? ?Boy1: Well, here on it says that they were invented by a called George Crum.Boy2: When that?Boy1: Oh, it was back in .Boy2: So, why was it ? Boy1: Well one day a customer in the where George sent back his plate of because he said they were cut too Boy2: So ?来源:www.shulihua.net来源:www.shulihua.net数理化网Boy1: Well, George was in a bad mood, so he cut the potatoes really, really thin, and he them for a until they were .And he sprinkled on them so they were really salty. He the customer would them.Boy2: And?Boy1: And the customer and asked for more. He the other来源:www.shulihua.net customers about them, and soon everyone thinly-sliced, crispy, salty potato chips. 三用所给词的适当形式填空1. Potato chips (invent) by mistake.2. The customer said they werent (salt) enough.3. _ (skate)on real ice is very exciting.4. It is (report) that a new bridge will (build) here.5. I wasnt (invite) to the party yesterday.6. Theyre used for (see) in the dark.来源:www.shulihua.net7. He is used to (go) to work by bike.8. It used to (rain) here in summer. But now it doesnt often rain.2