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Unit 6
When was it invented
Section B (1a-1e)

Do you like shopping
Me too .
I bought so many things.
Can you guess them？
Lead in
Yesterday, I went to the "BUSY FOR YOU" to buy something to eat.
potato chip
lemon
candy
cake
salty egg
pepper
yogurt
coffee
biscuit
How do they taste
Presentation
味道
Different foods have different tastes .
lemon
They taste/are sour and sweet.
cake
coffee
It tastes/is bitter.
pepper
It tastes spicy/hot.
How does it taste
How does it taste
biscuit
It tastes crispy.
salty egg
It tastes salty.
--How does it taste
Ask and answer quickly.
--It tastes...
1a
sweet crispy salty sour
salty
sour
sweet
salty
How do these foods taste Some pictures have more than one word.
sweet ____________________________
crispy ____________________________
salty ____________________________
sour ____________________________
Write the name of a different food after each word.
banana
Beijing Duck
potato chips
grape
candy
biscuit
cookie
salty egg
lemon
1b
strawberry
salt
yogurt
Do you know how potato chips were invented
Do you like potato chips
Pre-listening
T F
T F
T F
T F
T F
T F
back in 1853.
1. Potato chips were invented by mistake.
2. They were invented in 1863.
3. The customer thought the potatoes
were not thin enough.
4. The customer said they were not salty
enough.
5. George wanted to make the customer
happy.
6. The customer was happy in the end.
Listen and circle T for true or F for false.
1c
didn't want
cut too thick
While-listening
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 __________.
Listen again. Complete the sentences.
were invented
1853
thin
crispy
really salty
verb.
time
adj.
adj.
adj.
1d
Let's read the conversation
Who invented potato chips
They were invented by a cook called George Crum.
When were potato chips invented
They were invented in 1853.
Post-listening
Retell the story
Why were potato chips invented
The customer said the fried potatoes were cut and them to the kitchen. George was angry.
too thick
sent
back
Retell the story
How were potato chips invented
George was so angry that he cut the potatoes really 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
Retell the story
What was the result
The customer them and .
loved
asked for more
Retell the story
Q: Although potato chips are really delicious, are they healthy
We should choose food wisely and develop good eating habits.
Homework
Memorize the new words.
Do the exercises in students’ book Page 55.
Preview the passage in 2b.

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