1. 英语教学课件
九年级全

2. Unit 6
When was it
invented?

3. Words and Expressions crispy salty sour by mistake customer
adj. 脆的；酥脆的
adj. 咸的
adj. 酸的；有酸味的
错误地；无意中
n. 顾客；客户

4. What’s this? How does it taste?

5. objectives To learn some words to describe how food can taste
crispy, sour, sweet, salty
To listen for specific information
To talk about the history of potato chips, using passive voice
Did you know potato chips were invented by mistake?

6. 1a
Can you describe
the tastes of them?
They are
crispy and salty.

7. 1. What kind of food, fruit and drink do you like best?
2. Can you describe the tastes of them?

8. What’s this? How does it taste?
potato chips
crispy, salty

9. What’s this? How does it taste?
ice cream
sweet

10. What’s this? How does it taste?
salted duck egg
salty

11. What’s this? How does it taste?
lemons
sour

12. 1b
Write the name of a different food after each word.
sweet
banana, water melon
crispy
fried chicken, potato chips
salty
cheese, salted eggs
sour
vinegar, lemon

13. Listen and circle T for true or F for false.
1. Potato chips were invented by mistake.
T F
2. They were invented in 1863.
back in 1853.
T F
3. The customer thought the potatoes were not thin enough.
T F
4. The customer said they were not salty enough.
T F
loved the
potatoes.
5. George wanted to make the customer happy.
didn’t want
T F
6. The customer was happy in the end.
T F

14. Listen again. Complete the sentences.1d
Listen again. Complete the sentences.
The History of Potato Chips
Do you know how potato chips were invented? Potato chips ______________ by a cook called George Crum. They were invented in ________________. George Crum cut the potatoes really, really ___________ and then cooked them for a long time until they were _________. Finally he put lots of salt on them so they were ______________.
were invented
1853
thin
crispy
really salty

16. 1e
Make a conversation about the invention of potato chips. Use the information in 1c and 1d.
Did you know potato chips were invented by mistake?
Wow, I didn’t know that.
Who invented them?

17. Make a conversation about the invention of potato chips
Make a conversation about the invention of potato chips. Use the information in 1c and 1d.
They were invented by a cook called George Grum.
When was that?

18. Make a conversation about the invention of potato chips
Make a conversation about the invention of potato chips. Use the information in 1c and 1d.
Oh, it was in 1853.
Wow, cool. Why was it an accident?

19. Make a conversation about the invention of potato chips
Make a conversation about the invention of potato chips. Use the information in 1c and 1d.
Eh…it is really a long story.
Never mind, I am not busy.

20. We’ll see which group does the best.
Role-play
We’ll see which group does the best.
1. Role play in groups;
2. Role play in front of the class

21. by mistake意为“错误地, 无意中”，常置于句末。
The potato chips were invented by mistake.
薯片是无意中被发明出来的。
by mistake意为“错误地, 无意中”，常置于句末。
【经典习题】完成句子：
很抱歉我错拿了你的书包。
I’m sorry that I took your schoolbag
___ _______.
by mistake

22. 拓展延伸
mistake为名词时，还可构成短语：make a mistake （犯错误）
mistake为动词时，常用于mistake…for… （把……误认为……）
I mistook Kate for her sister when I met her yesterday.

23. There were four famous inventions in a______ China.
注: 另附word文档。
点击此处链接
根据句意和首字母提示补全单词。
There were four famous inventions in a______ China.
2. These cars were p_______ by the
same company.
3. Few pears r________ on the trees after the heavy rain.
4. I don’t like the t_____ of the meat.
ncient
roduced
emained
aste

24. — “Frog”, Mo Yan’s latest novel, please!
— Sorry, it ____ just now. But it will come out again soon.
A. sold out B. is sold out
C. has sold out D. was sold out

25. It ____ last week that the haze(雾霾) in Beijing caused many problems.
A. reports B. reported
C. is reported D. was reported

26. 本课时重点回顾 new words crispy, sour, salty 2. passive voice
Potato chips were invented by mistake.

27. Spelling Bee 客户 错误地 crispy salty sour
Now 2 mins to test your spelling.
English-Chinese
crispy salty sour
Chinese-English
客户 错误地
When finished, exchange your papers to see who does the best.

28. Homework
1. Write a short passage about the history of your favorite food.
2. Preview the new words we will use in the next lesson.