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(共34张PPT)
Unit 6
When was it invented？
人教新目标版 九年级上
SectionB 1a-1e公开课
Learning objectives
1. 学习并掌握词汇crispy, salty, sour, customer,by mistake等；
2.能听懂并正确运用新单词和被动语态复述薯片的发明,运用听力策略完成听力任务。
3.了解薯片的发明历史，引导学生有条理的讲述薯条发明的过程。
4.引导学生意识到身边处处有发明，小发明也能创造大大的价值。
Let’s watch a video and be ready to discuss.
Warming-up
Do you like eating
snacks
How does your
favorite snack taste
salted egg
How does
it taste
It tastes
salty.
adj. 咸的
Potato chips
biscuits
How do
they taste
They taste
salty and crispy.
/ kr spi / adj. 脆的； --------酥脆的
ice cream
cakes
How do
they taste
They taste
sweet.
yogurt
How does
it taste
It tastes
sour.
adj. 酸的
coffee
How does
it taste
It tastes
bitter.
/ b t (r)/ adj. 苦的
spicy strip
(Latiao) 辣条
How does
it taste
It tastes
spicy.
/ spa si/adj. 辣的
苦的
bitter
辣的
spicy
脆的
crispy
甜的
sweet
酸的
sour
Summary
咸的
salty
The taste of food:
1a
The words in the box describe how food can taste. Write them under the correct pictures. Some pictures have more than one word.
sweet crispy
salty sour
crispy
salty
sour
sweet
salty
1a
Write the name of a different food after each word.
apple;
waterme-lon;
cake;
honey;
candy;
......
French fries;
lettuce;
popcorn;
potato chips;
......
pizza;
potato
chips;
salt;
......
grape;
vinegar醋;
orange;
lemon;
strawberry
......
sweet crispy salty sour
Driving a train
S1：I like eating...They/It taste(s)....
S2: Xx likes eating....food.
I like eating...They/It
taste(s)....
S3:....
Look at the picture and read the sentences in 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
Predict: 1.What are they talking about
A.How potato chips were cooked.
B.How potato chips were invented.
C.How to make customers happy.
Predict: 2.What characters are mentioned in the story
Predict: 3.Where did the story happen
George and a customer（n.顾客).
In a restaurant.
Pre-listening
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
1c
Listen and circle T for true or F for false.
1853
thin
angry
thick adj.厚的
Language points
by mistake为介词短语，意为“无意中；错误地”,相当于accidentally。
【语境领悟】I missed the school bus by mistake this morning.
今天早上我无意中错过了校车。
I took your pen by mistake. 我错拿了你的钢笔。
mistake 1. n. 错误。make a mistake/make mistakes犯错误
I used to make mistakes in spelling．我过去常常犯拼写错误。
2. v. 弄错; 误解
You mistook my meaning entirely.你完全误解了我的意思。
mistake ... for ... 错把……当成……
Don't mistake me for an American.不要把我误会成美国人。
in the end 最后，终于 (相当于finally 或 at last)
【拓展】
at the end of可以指时间，也可指处所，意为“在……尽头，在……结束时”。
by the end常和of相连，用于指时间，意为“到……底(末)为止”
【学以致用】1.他在花园的尽头的那边。
He is down _______________ the garden.
2.最后，我们找到了这座房屋。
______________ we found the house.
3.到战争结束时, 这个小铺子已经变成有728个工人的大厂了。
_____________________, the small work-shop had become a large factory with 728 workers.
at the end of
In the end
By the end of the war
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
被动语态
时间
形容词
形容词
形容词
Listen again and fill in the mind map.
The History of Potato Chips
When
Who
How
Result
Why
In _______
A cook________George Crum
The________ said the fried potatoes _______too ____
and sent them back to the kitchen. George was ______.
1. ____ the potatoes really, really_______.
2. _______ them for a long time until they were _____.
3. ______ lots of ______ on them so they were really salty. He thought the customer would ______ them.
The customer ______ them and _________ more.
1853
customer
were cut
thick
angry
thin
Cut
Cooked
crispy
Put
salt
loved
asked for
called
hate
Let's read and check your answers.
Boy 1:Hey,did you know that potato chips were invented by mistake
Boy 2: Really What do you mean
Boy 1: Well, here on the bag it says that they were invented by a cook called George Crum.
Boy 2: When was that
Boy 1: Oh, it was back in 1853.
Boy 2: So, why was it an accident
Boy 1: Well, one day a customer came in the restaurant where George worked.He ordered a plate of fried potatoes.When the potato came, he said they were cut too thick and sent them back to the kitchen.
追溯到1853年
Boy 2: So what happened
Boy 1: 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.
Boy 2: And
Boy 1: 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.
Boy 2: And we're still eating them today. What a cool story!
Boy 1: Yeah.
(被)切得很薄的
1
2
The potatoes are cut very thin.
4
3
They are cooked for a long time.
Some salt is put on them.
They become
crispy.
Retell the steps.
Do you know how to make potato chips
Post-listening
Do you know potato chips
were invented
They were invented by a
______called George Crum
in .
by mistake
cook
1853
1
Retell the story
Who
When
2
One day a customer _______a plate of fried potatoes. When they came, he said they________ too ______ and sent them back to the kitchen.
ordered
were cut
What
happened

thick
3
George was so angry that he cut the potatoes really ,and cooked them for a long time until they were . Then he put lots of salt on them, so it tasted . He thought the customer would hate them.
thin
crispy
salty
What
happened

4
However, the customer them and . And we’re still eating them today.
loved
asked for more
What
happened

How much do you know about potato chips
Potato chips by many people.
It that potato chips are more than 150 years old.
Even today potato chips still by most people.
They by accident in 1853.
The inventor George Crum.
One day, he to serve fried potatoes by a customer.
When the potatoes came, the customer thought they too thick.
The potatoes for a long time until they were crispy.
some salt ________on potato chips.
are loved
is said
are
enjoyed
were invented
was called
was asked
were cut
were cooked
is put
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 were they invented by
When were they invented
How were they invented
What happened next
What a cool story it is!
A customer ordered...
When the potatoes came, he said ....
George was ...., so he cut the potatoes .....and he cooked them....
And he put lots of .....He thought the customer.....
However,the customer.....
1e
Creative invention
Creative inventions come from small things in life.
一、选词填空.
1. Eating too much________food is bad for your teeth.
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
Exercises
二、单项选择。
1. Mom added salt to the soup, but it still wasn’t _____.
A. enough sweet B. sweet enough C. salty enough D. enough salty
2.Wang Xue has a friend______Lin Yu.
A. call B. calling
C. called D. to call
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
4. I know that potato chips ______ by George Crum.
A. invented B. was invented
C. are invented D. were invented
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