(共28张PPT)
人教新目标版 九年级（全）
Unit6 When was it invented
Period4 Section B 1a-1e
听说课优质课
Presentation
Learning aims
1.学习本课新词汇: crispy, salty, sour, by mistake, customer
掌握句型：
—Did you know potato chips were invented by mistake
—Wow, I didn’t know that.
Who invented them
2. 在听力练习中，能够准确判断句子正误，完成句子填空，能听懂薯片发明的历史以及发明的过程等。
3.在口语交际中能够使用一般过去时的被动语态谈论薯片的发明过程和历史。
Presentation
New words
Pre-listening
Listen and repeat.
crispy adj. 脆的；酥脆的
salty adj. 咸的
sour
adj.酸的；有酸味的
customer n. 顾客；客户
[ k st m ]
[ sa ]
[ s lti]
[ kr spi]
by mistake
错误地；无意中
Presentation
Warming up
Pre-listening
Look and say.
What kind of snacks do you like to eat
How do they taste
Can you describe them
Which taste do you like best
Can you think of any other flavor (n.味)
What are the four basic kinds of tastes
sour
sweet
bitter
hot
ice-cream
sweet
bread
sweet and delicious.
Presentation
Presentation
Pre-listening
Look and say.
How does the food taste
They are crispy（脆的）.
potato chips（薯片）
biscuits （饼干）
lemons 柠檬
yogurt酸奶
They are sour（酸的）.
watermelon（西瓜）
cake 蛋糕
They are sweet（甜的）.
lazi chicken 辣子鸡
hot pot火锅
They are hot (辣的).
Presentation
Presentation
Pre-listening
Look and say.
Different food has different taste(味道).
They are salty (咸的).
salted eggs 盐蛋
bitter melon苦瓜
coffee咖啡
It tastes bitter.
['b t ]
crispy / hard
They taste crispy and hard\soft and sweet.
sweet / soft
pickled vegetable
['p k( )ld] 腌菜
What’s this /What are these
It’s a/an…..They’re…..
How does it taste /How do they taste
It’s/They’re…….
Presentation
Practice
Pre-listening
Look and write.
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
adj. 脆的；
酥脆的
adj. 咸的
adj. 酸的
sour
sweet
salty
Presentation
Practice
Pre-listening
Look and write.
1b
sweet ____________________________
crispy ____________________________
salty ____________________________
sour ____________________________
Write the name of a different food after each word.
banana
apple
Beijing Duck
potato chips
grape
candy
cracker
cookie
salt
salted fish
lemon
Presentation
Lead in
Pre-listening
Look and say.
First what are needed
The potatoes are cut into slices.
The slices are cooked in the pan for a
long time until they were crispy.
The pepper and salt are sprinkled(撒，洒).
potato chips
Who were potato chips invented by
When were potato chips invented
Do you know how to make potato chips
They should be cut really thin.
A lot of salt are put on them.
Presentation
Prediction
Pre-listening
Look and answer.
Who are they
George
cook
customer
How were potato chips invented
Presentation
Listening
While-listening
Listen and circle.
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. 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
n. 顾客
1853
thin
angry
1c
Presentation
Listening
While-listening
Listen and complete.
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
1d
Presentation
Listening
While-listening
Listen and fill.
Listen again and fill in the card.
Who invented:__________
When invented :__________
How invented :__________
Process:_______________________________________________________________________________________________________________________
George Crum
1853
by mistake
cut the potatoes really, really thin
cooked them for a long time until they were crispy
put lots of salt on them so they were really salty
Presentation
Reading
Listen to the tape and read after it.
Post-listening
Listen and repeat.
Presentation
Practice
Post-listening
Look and write.
One day a customer in the restaurant where George worked __________his plate of _____ potatoes because he said they ________too thick. George was in a bad mood, so he ___the potatoes really, really thin, and he ______ them for a long time ____ they were crispy. And he _________lots of salt on them so they were really_____. He thought the customer would _____ them. And the customer loved them and _________ more. He told the other customers about them, and soon everyone was ordering thinly-sliced, ______, _____ potato chips.
The story of potato chips
sent back
fried
were cut
cut
cooked
until
sprinkled
salty
hate
asked for
crispy
Potato chips were invented by a chef called George Crum. They were invented in 1853.
salty
Presentation
Retelling
Post-listening
Look and retell.
Fill in the mind map, then retell the story.
The History of Potato Chips
When
Who
How
Result
Why
1853
George Crum
The customer said the fried potatoes were cut too thick
and sent them back to the kitchen. George was angry.
1. Cut the potatoes really, really thin.
2. Cooked them for a long time until they were crispy.
3. Put lots of salt on them.
The customer loved them and asked for more.
Presentation
Practice
Post-listening
Ask and answer.
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
It’s said that they were
invented by a cook called George Crum.
When was that
Oh, it was back in 1853.
Why was it an accident
One day, a customer ordered a plate of fried potatoes. George cooked them for him. When the potatoes came, he said they were cut too thick and sent them back to the kitchen.
Presentation
Practice
Post-listening
Ask and answer.
So what happened
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.
And then
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.
Presentation
Discussion
Post-listening
Look and say.
What kinds of delicious food does your hometown have
Have you ever eaten hot pot
Hot pot is a feature (特色）food of Chongqing. When the Chongqing natives get together with their friends, most of them would like to choose hot pot as their dinner. Hot pot is famous for its spicy and hot （麻辣）， If you are adventurous （有冒险精神）enough, you can cook anything with hot pot .
Love food, Love hometown, Love life!
爱美食，爱家乡，爱生活！
Presentation
Language points
Post-listening
Look and think.
1. by mistake为介词短语，意为“无意中；错误地”，
相当于accidentally。
例句：今天早上我无意中错过了校车。
I missed the school bus by mistake this morning.
我错拿了你的钢笔。
mistake还可以构成短语：
make a mistake/make mistakes 犯错误
mistake…for… 把……错认成……
翻译：别再出错了。
我把她错认成我们的英语老师了。
I mistook her for our English teacher.
Don’t make mistakes any more.
Presentation
Language points
Post-listening
2. The customer thought the potatoes were not thin enough.
单词enough修饰名词时，不需要倒装。
如：我有足够的钱。
其修饰形容词、副词要倒装。
如：He wrote carefully enough to get the award
of the competition.
enough常可以和词组so-that，too-to转换。
他跑得不够快，赶不上其他人了。
He didn’t run fast enough to catch up with the others.
He ran so slowly that he couldn’t catch up with the others.
He ran too slowly to catch up with the others.
Look and think.
Presentation
3. in the end 最后，终于 (相当于finally 或 at last)
I was saved in the end.我最后获救了。
by the end常和of相连，用于指时间，意为“到……底(末)为止”
at the end of可以指时间，也可指处所，意为“在…尽头，在…结束时”。
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
翻译：这个月月末我们将会开个会。
At the end of this month we’ll have a meeting.
到去年末为止我们已经做了十架飞机了。
By the end of last year we’d made ten planes.
Language points
Post-listening
Look and think.
Presentation
Language points
Post-listening
4. salty 咸 的
salty (tasting of salt) 形容词，意为“咸的；含盐的”，是由名词salt(盐)加后缀-y构成的。
The soup is a little salty for me.汤对我来说有点咸了。
名词+后缀-y构成的形容词：
luck—lucky health—healthy wind—windy rain—rainy taste — tasty ice —icy snow —snowy sun—sunny
Look and think.
Presentation
Class test
Post-listening
I. 用所给词的正确形式填空。
1. The TV ____________ (invent) around 1927.
2. Wood can be used for ________ (make) paper.
3. This kite _________ (make) by Uncle Wang.
4. Tea ______________ (discover) a long time ago.
5. Our classroom _________________ (should clean)
every day.
was invented
was made
was discovered
should be cleaned
making
Presentation
Class test
Post-listening
1.请不要让他工作太久。
Please don’t _____ him _______for long.
2. 这个顾客说这个薯条不够脆。
The customer said that the potato chips weren’t ______ _____.
crispy enough
II. 翻译句子。
3. 乔治想让顾客高兴。
George wanted _________ the customer ________.
4. 薯条是一个名Crum的厨师发明的。
The potato chips_____ _______ by a cook ______Crum.
5.对不起，我刚才错拿了你的雨伞。
Sorry，I took your dictionary ______ _______ just now.
to make
happy
were invented
called
by mistake
make
work
Presentation
Homework
1.Go over the history of chips in 1a & 1d and write a short essay about it.
2.Look for the invention of tea by the Internet or reading the books. Then copy the information on paper.
3. Preview the new words and expressions in SectionB2a-2e.
4. Preview the passage Do You Know When Basketball Was Invented on page 46.
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