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(共24张PPT)
Unit 1
When was it invented
Section B 1a-1e
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情境导入
新课探究
课堂小结
Before-listening
情 境 导 入
There are so many things on sale .(打折出售)
Do you want to buy something to eat
What are they
Lemons
cake
chocolate
candies
salted duck egg
coffee
情境导入
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课堂小结
Lemons
cake
chocolate
candies
salted duck egg
coffee
情境导入
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课堂小结
Different foods have different tastes (味道）.
How do they taste
They are/taste sour.
sour
酸的 [ sa ]
How do they taste
They are/taste sweet.
sweet
甜的[swi:t]
How do they taste
They are/taste crispy and salty.
crispy
脆的[ kr sp ]
salty
咸的[ s lt ]
Can you think of any other flavor (n.味)
Black coffee tastes bitter.
bitter
苦的[ b t ]
spicy
辣的
[ spais ]
Latiao tastes spicy/hot.
Different foods have different tastes (味道）.
Read together
sour [ sa ] 酸的
sweet [swi:t] 甜的
bitter [ b t ] 苦的
spicy [ spais ] 辣的
salty [ s lt ] 咸的
crispy [ kr sp ] 酥脆的
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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
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1b
Write the names of a differrent food after each word.
sour .
crispy .
salty .
sweet .
bananca
candies
cake
potato chips
salted eggs
lemons
potato chips
potato chips
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错误地；无意中
不够薄
Listening tips:
Find out key words &phrases
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1853
thin
didn’t want
While-listening
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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 ______________.
1853
thin
crispy
really salty
were invented
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Listen again and underline passive voice ( past tense).
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According to the listening, complete the mind map.
After-listening
Potato chips
When : in _________
Where: in a ________
Who : a ________called George Crum
How: A customer came into a restaurant. He__________fried potatoes.
When the potatoes came, they were ________ back to the kitchen
because they were too _______. But this made the cook was _____,
so he cut the potatoes really _______ and cooked for a long time
until they were ________, and he_______lots of salt on them,so the
potatoes tasted really________.He thought the customer would
______ them.
Result :The customer_______ them so much that he ________for more
and told others.
restaurant
1853
cook
ordered
sent
thick
angry
thin
crispy
put
salty
hate
loved
asked
新课探究
After-listening
1e
Make a conversation about the invention of potato chips. Use the information in 1c and 1d.
A: Did you know potato chips
were invented by mistake
B: Wow, I didn’t know that.
Who invented them
A: ...
新课探究
Language points
1.mistake的用法
potato chips were invented by mistake.薯片是无意中被发明的。
I took his book by mistake. 我误拿了他的书。
by mistake “错误地；无意中”，此时mistake作名词。如：
★ 可数名词；make a mistake /make mistakes “犯错”，
表示在某方面犯错用in
eg. I made a mistake in grammar. 我在语法方面犯了错。
★ 及物动词；“搞错，认错” mistake-mistook-mistaken
mistake...for... 把……错当成
eg. I mistook Tom for Bob yesterday. 昨天我错把汤姆当成了鲍勃。
拓展
新课探究
2.enough 用法
Potatoes were not thin enough.土豆不够薄。
形容词；“足够的，充足的”.
eg. I have enough time to finish the work. 我有充足的时间完成工作。
副词；“足够地，充分地”
eg. He is old enough to go to school. 他足够大可以去上学了。
enough+名词
形容词/副词+enough
小结
enough 名前，形副后，常与to do 搭配使用。
新课探究
3.thin 用法
Potatoes were not thin enough.土豆不够薄。
形容词；“瘦的”
反义词：fat
thin-thinner-thinner
thin
形容词；“薄的”
反义词：thick (厚的)
新课探究
Ⅰ. 根据句意和所给汉语提示完成句子。
1. The food tastes too (咸的) for me. I can’t stand it.
2. The cake goes (酸的).Throw it away, please.
3. Eating too much (甜的) candies is bad for your teeth.
4. The restaurant offers good service to all its _ (顾客).
5. I likes crispy (脆的) chips. They are so yummy.
salty
sour
sweet
customers
sweet
新课探究
II. 根据语境, 从方框中选择恰当的短语填空, 有的需要变换形式。
by mistake, in the end, fast enough, enough food, called
1. The teacher said he should run .
2. Although he thought it was difficult, he agreed to do it .
3. People in the poor erea don’t have .
4. It’s said that George invented potato chips .
5. The book was written by a famouse writer Lu Xun.
fast enough
in the end
enough food
by mistake
called
课 堂 小 结
Summary
1.Master the new words.
crispy salty sour by mistake custermer
2.Important sentences.
Did you know potato chips were invented by mistake
The customer said the potatoes were not thin enough.
3.Talk about the invention of potato chips.
was/were +done
THANK YOU

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