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(共34张PPT)
Section B (1a-1e)
Unit 6 When was it invented
CONTENT
Pre-listening
Lead in
While-listening
Post-listening
Summary
Homework
Learning goals
语言能力：能够在谈论美食发明的情境中正确运用新单词和被动语态的
有一般过去式结构。并利用所学知识复述制作薯片的步骤。
文化意识：了解薯片的发明历史，意识到小发明也能创造大大的价值。
培养创新意识。同时养成健康饮食的好习惯。
思维品质：通过听力活动练习，能精准提取关键信息，锻炼思维的逻辑
能力。
学习能力：在美食的主题下保持学英语的兴趣；学习听力策略快速完成
听力；通过小组合作，演讲报告达到锻炼英语口语的能力。
Lead in
Lead in
What kinds of food do you like best
I like …
Pre-listening
How do they taste
They taste salty and crispy.
Presentation
Potato chips
biscuits
How do they taste
They taste sour.
Presentation
lemons
yogurt
How do they taste
They taste spicy.
chili
hot pot
Presentation
How do they taste
They taste sweet.
chocolate
ice-cream
Presentation
honey
How do they taste
They taste bitter.
bitter melon
coffee
Presentation
sour
crispy
spicy
salty
bitter
sweet
Game time!
sweet crispy salty sour
_________
_________
crispy
sour
salty
_________
sweet
salty
_________
_________
_________
_________
1a
_________
sweet crispy salty sour________
bananas
fried chicken
cheese
yogurt
1b
Write down more food!
What are they doing
Do you know how potato chips were invented
Predicton
They were invented by a cook called George Crum.
But he invented them by mistake.
=by accident
/kr m/
Presentation
While-listening
1c
1. Potato chips were invented by mistake. T F
2. They were invented in 1863. 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
5. George wanted to make the customer happy. T F
6. The customer was happy in the end. T F
最后；终于
无意中
n.顾客
薄的
Tips：听关键词，注意时间，形容词，肯定或否定
1d
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
Post-listening
Read the conversation and answer the questions
Boy1: Hey, did you know that potato chips
were invented by mistake
Boy2: Really What do you mean
Boy1:Well, here on the bag it says that they
were invented by a cook called George
Crum.
Boy2: When was that
Boy1: Oh, it was back in 1853.
Boy2: So, why was it an accident
Boy1: Well, one day, a customer came into
the restaurant where George worked.
He ordered a plate of fried potatoes.
When the potatoes came, he said they
were cut too thick and sent them back
to the kitchen.
Boy2: So what happened
Boy1: Well , George was angry,so he cut
the potatoes really, really thin, and
he cooked them for a long time until
they were crispy.And he put lots of
salt on them so they were really salty.
He thought the customer would hate
them.
Boy2: And
Boy1: And the customer loved them and asked
for more. He told the other customers
about them, and soon everyone was
ordering thinly cut, crispy, salty potato
chips.
Boy2: And we're still eating them today.
What a cool story!
追溯到
进入
厚的
send...back to...
“把······送回······”
持续很长时间
Who invented potato chips
When were they invited
How was it made
1e
Who invented potato chips
How to make potato chips
When were they invited
They were invented by….
They were invented in…
First, …
Retell the process of making potato chips.
First , cut the potatoes really ,really thin.
Then, cook them for a long time until they are crispy.
Finally, put lots of salt on them so they are really salty.
Small inventions changed the world by accident.
Summary
酸的
甜的
咸的
脆的
辣的
苦的
Summary
Summary
The customer loved them so much that he asked for more. he told---. So - ordered----
As a result
He thought the customer would hate them.
Why
by accident, ----sent back---, because---. But ---angry, so ---cut----and cooked ---for---until----.And---put ---on ---so-----.
How
a cook called George Crum
Who
in 1853
When
The history of potato chips
exercise
Ⅰ.选词填空
Exercise
1. I don’t like eating chocolate. It tastes is too .
2. Mom added salt but it still wasn’t enough.
3. I prefer lemons to oranges. I like the taste.
4. She likes cookies. They are hard, dry and easily broken.
crispy sweet salty sour
sweet
salty
sour
crispy
1. Mom added salt to the soup, but it still wasn’t _____.
A. enough sweet
C. salty enough
B. sweet enough
D. enough salty
Exercise
2. This kind of soup should be boiled _____ a long time.
A. for
B. in
C. with
D. at
Exercise
3. Hold on to your dreams, and they may come true _____.
A. at the end
B. by the end
C. in the end
D. on the end
Exercise
4.I know that potato chips ______ by George Crum.
A. invented
B. was invented
C. are invented
D. were invented
Exercise
Homework
Write down the history of potato chips in your exercise book.(B层)
2. Find out some information about an invention you are interested in, and write a passage to introduce it. (A层)

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