(共23张PPT)
Unit 6 When was it invented Section B 1a-1e
Key words & phrases:
sour, salty, crispy, customer, by mistake, in the end
Key sentences:
Potato chips were invented by mistake.
The customer was happy in the end.
Functions:
To give students listening and speaking practice.
Learning Objectives
Revision
一般过去时的被动语态
主语+ wasn’t/ weren’t及物
动词的过去分词(+by）
肯定句:
Was/Were +主语+及物动词
的过去分词（+by）
主语+ was/were +及物动词的
过去分词（+by）
否定句:
一般
疑问句：
结构：
主动语态 被动语态
特殊
疑问句：
特殊疑问词+ was/were+
主语+过去分词
Free-talk
How do these food taste
It tastes sweet.
How does it taste
It tastes sour.
How does it taste
adj.酸的；有酸味的
It tastes crispy.
How does it taste
adj.脆的；酥脆的
It tastes salty.
How does it taste
adj.咸的
expensive, convenient, safe
Pre-listening
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
1b
Write the name of a different food after each word.
sweet __________ crispy ___________
salty _____________ sour _____________
banana
prawn slices
shredded squid
yogurt
1c
Listen and circle T for true or F for false.
While-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
错误的；无意中
n. 顾客；客户
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
Post-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:
Did you know potato chips were invented by mistake
Wow, I didn’t know that. Who invented them
It says that they were invented by a cook called George Crum.
When were they invented
They were invented in 1953.
Why was it an accident
Well, one day, a customer ordered a plate of fried potatoes. But when the potatoes came ,he said they were cut too thick and sent them back to the kitchen.
What happened
George cut the potatoes really, really thin and then cooked them for a long time until they were crispy. He put lots of salt on them so they were really salty.
Ready
Go!
Set
Role play
[观察1] The customer was happy in the end.
[探究] in the end 意为 ______________
in the end 表示经过许多困难、变化、挫折、或捉摸
不定的情况之后，某事才发生，意为“最后；终于”
相当于 __________ 和___________.
在老师的帮助下，他终于通过了考试。
With the teacher’s help, he passed the exam ___________.
最后；终于
at last
finally
in the end
Exercises
1. 抱歉，我误拿了你的雨伞。
Sorry, I took your umbrella______ _________ .
2. 我认为这汤不够咸。
I think the soup_____ _____ _______ .
3. 他最终同意了我的计划。
She agreed on my plan____ _____ _____.
by mistake
isn’t salty enough
in the end
GOOD JOB
