2. 初四英语 Unit 4 When was it invented? Section B 1a-2c 大孤山初中 丁小娜

3. Correct your answers 1. 脆的 adj.crispy 咸的，含盐的 adj.salty 酸的，酸味的 adj sour 厨师 n chep 撒，洒 v sprinkle 3. cut cut cut say said said think thought thought make made made know knew known

4. 2. 错误地 _______ 意外地 ________ 够薄 __________ 够咸 __________ 最后，终于 ________ 要，索取 ______ 使顾客开心 ________________ 把许多盐撒在他们上 _________________ by mistakeby accident thin enough salty enough in the end ask for make the customers happy sprinkle lots of salt on them

5. 1876( 贝尔 ) 1885( 卡尔. 本茨 ) 1927( 贝尔德 ) 1971( 帕斯卡 ) 1976( 华德. 爱肯 ) When were they invented and who were they invented by?

6. the Passive Voice bedone+ Past Passive Voice: was / were+ done

7. sweet sour sweet What do you think of the following things? crispycrispy saltysalty saltysalty sour sweet cold

8. sweet crispy salty sour salty sour sweet bitter cold

9. Listen and circle “T” (for true) or “F” (for false). 1. The potato chips were invented by mistake. 2. They were invented in 1863. 3. The customer thought the potatoes weren’t thin enough. 4. The customer said they weren’t salty enough. 5. George wanted to make the customer happy. 6. The customer was happy in the end. T F

10. The history of chips ____________ that potato chips were invented by mistake? Chips _______________ by a chef called George Crum. They were invented in ______. George Crum cooked them for a long time until they __________. And he sprinkled lots of salt on them so they were ___________. Did you know were invented 1853 were crispy really salty

11. 一位叫 Edison 的发明家 _____________________________ 一个叫 James 的运动员 ______________________________ 一个叫九寨沟的美丽的地方 ___________________________ an inventor called Edison a player called James a beautiful place called Jiuzhaigou

12. 他昨天晚上一直工作到 11 ： 00 。 __________________________________ 车停下再下车。 _________________________________ 直到雨停了我们才离开了。 ______________________________ 我会等他回来。 ________________________________ He worked until 10:00 last night. Don’t get off the bus until it stops. We didn’t leave until it stopped raining. We didn’t leave until the rain stopped. I will wait for him until he comes back.

13. Potato chips (invent) by mistakes. They were invented by a chef who (call) George Crum. It was back in the 1853. Why was it an accident? Well, one day a plate of fried potatoes (send)back. Because the customer said they (cut)too thick. George was in a bad mood, so he cut them again, because the potato chips (cut)very thin and (cook) for a long time until they were crispy. And he (sprinkle) lots of salt them so they were really salty. The customer loved them and told other people. Soon everyone was ordering crispy, salty potato chips. We are still eating them today. were invented was called were sent were cut were cooked sprinkled on

14. 巩固提高 The customers complained that potato chips weren’t ________. A. enough crispy B crispy enough C enough salty D salt enough. -Sorry, I took your pen __________. – It doesn’t matter. A by chance B in the way C by mistake D by mistakes Jack ____ leave _____ his teacher comes back. A doesn’t until B /, until C won’t, / D won’t, until A talk on Chinese history _____ in the school hall next Monday. A be given B has given C will be given D will give 二．完成句子 1. 纸张是中国人发明的。 2. 我认为这鱼不够咸。 3. 美洲大陆是哥伦布（ Columbus ）偶然发现的。 B D D D Paper was invented by Chinese. I don’t think the fish is salty enough. America was discovered by Columbus.

15. Homework Group A: 在网上查一种你喜欢的物品的 发明经历，用英语写一篇简介。 Group B: Write six sentences with the points in this lesson. (enough, …called…, not…until/…until…, etc.)