Unit 6 When was it invented? Section B 1a-1e课件(共36张PPT)2023-2024学年人教版英语九年级全册

(共36张PPT)
Unit 6 When was it invented
Section B 1a-1e
Grade 9
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。
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
Let’s enjoy a video
sour
crispy
spicy
salty
bitter
sweet
Game time!
Free talk
Look at the following pictures.
How do they taste
sweet
sweet
sweet/crispy
Free talk
sour
salty
Look at the following pictures.
How do they taste
crispy/salty
ice-cream
sweet, cool and delicious!
Warming up
How do the bread and snack taste
Can you think of any other flavor (n.味)
What are the four basic kinds of tastes
sour
sweet
bitter
hot
What food do you like to eat Why
Lead-in: Free talk
Look and say
·What (kind of food) can you
see in the pictures
·How about its taste
Do you like it
The words in the box describe how food can taste. Write them under the correct pictures. Some pictures have more than one word.
1a
sweet crispy salty sour
crispy
salty
sour
sweet
salty
sweet crispy salty sour________
bananas
fried chicken
cheese
yogurt
1b
Write down more food!
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
A lot of salt are put on them.
They should be cut really thin.
Lead in
Pre-listening
Write the name of a different food after each word.
1b
sweet
crispy
salty
sour
banana
biscuit
cheese
tomato
Look and predict
·What are they talking about
·Where does the story take place
Let’s listen and choose.
4. How were potato chips invented
Because of the special needs of
customers.
B. Because George was angry.
C. Because they’re crispy and salty.
精听：对文章细节内容再次梳理 ——what, when, who, how。
1. What are they talking about
A. How potato chips were invented.
B. Why George was angry.
C. When potato chips were invented.
2. When were potato chips invented
A. In 1835.
B. In 1853.
C. In 1385.
3. Who invented potato chips
A. A customer.
B. A restaurant.
C. A cook.
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
播放教材1c音频
Listen again. Complete the sentences.
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
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
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
Who
When
Do you know potato chips
were invented
They were invented by a
______called George Crum
in .
by mistake
cook
1853
1
Retell the story
2
One day a customer _______a plate of fried potatoes. When they came ,he said they________ too thick and sent them back to the kitchen.
ordered
were cut
What happened
Make a conversation about the invention of potato chips. Use the information in 1c and 1d.
1e
A: Did you know potato chips were invented by mistake
B: Wow, I didn’t know that. Who invented them
A: ...
Do you know how sandwich was invented
Discussion
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！
1．salty 咸的
salty 形容词，意为“咸的；含盐的”，是由名词 salt（盐）加后缀 -y构成的。
e.g. 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
拓展
luck → lucky（幸运的) health → healthy（健康的）
wind → windy（有风的；多风的）
rain → rainy（下雨的；多雨的）
1． salty 咸的
名词 + 后缀 -y 构成的形容词
拓展
cloud → cloudy（多云的；阴天的）
sleep → sleepy（困乏的；瞌睡的）
snow → snowy（下雪的；多雪的）
sand → sandy（含沙的）
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
2． Potato chips were invented by mistake.
薯片是无意中被发明的。
by mistake 意为“错误地；无意中”。
e.g. Maybe somebody took it by mistake. 可能有人错拿了它。
拓展
在 by mistake 中，mistake 要用单数，且其前无冠词。
【拓展】
mistake还可以构成短语：
make a mistake/make mistakes犯错误；
mistake…for… 把……错认成……。例句：
Don’t make mistakes any more. 别再出错了。
I mistook her for our English teacher.
我把她错认成我们的英语老师了。
(　)1. —Sorry, Pam, I took your notebook ______．
—It doesn't matter. They look the same as each other.
A．by hand B．by mistake C．in trouble D．in danger
(　)2. I can't stand these ______ oranges. I like sweet food.
A．crispy B．salty C．sour D．delicious
(　)3 .The soup isn't ______. Please add some ______ to it.
A．salt enough; salty B．salty enough; salt
C．salt; salty enough D．enough salty; salt
(　)5.In summer, Susan often drinks some _____ water when she comes back from school.
A．boiling B．boil C．boiled D．boils
B
C
B
C
Exercise
一、单项填空
1. The TV ____________ (invent) around 1927.
2. They are used for _______ (see) in the dark.
3. This kite _________ (make) by Jack.
4. Tea ______________ (discover) a long time ago.
5. Our classroom _________________ (should clean) every day.
was invented
seeing
was made
was discovered
should be cleaned
Exercise
二、用所给词的正确形式填空
crispy、salty、sour、by mistake、customer
词汇
·When was ... invented
·Where was ... invented
·Who invented ...
·How was ... invented
谈论食物的
发明历史
Do you know what these are How were they invented
Choose one of them and write a short passage. You can search the Internet for information.