人教版英语九年级全一册 Unit 6 When was it invented? Section B (1a-1e) 导学案（含答案）

人教版英语九年级全册第六单元Section B (1a-1e)导学案
Unit 6 When was it invented Section B (1a-1e)
预习目标：
1.Key words and phrases:
crispy, salty, sour, by mistake, customer
2.Key sentences:
—Did you know potato chips were invented by mistake
—Wow, I didn’t know that. Who invented them
3.通过学习，了解土豆的发现过程。
预习导学：
温故知新——复习前一节课学习的语法，巩固练习。
一、根据所给词的正确形式填空。
1. The boy _____________(punish) by his mother yesterday.
2. The old man ___________(pay) only 200 dollars as salary last month（工资、薪水）.
3. It ___________(say) the aliens（外星人）are from another planet（行星）.
4. The short novel______________ (write) by a common girl.
5. _________ the umbrella _________(take) out by someone yesterday
6.The rubbish ___________ (throw) everywhere when they got there .
7.Yesterday , the children _________ (tell) to stay at home in Tom’ family.
8. An hour _________ (spend) on his homework by him last Sunday .
参考答案：1.was punished 2.was paid 3.is said 4.was written 5.Was , taken
6.was thrown 7.were told 8.was spent
二、将下列句子改为被动语态。
1. They solved the problem by themselves yesterday.
_______________________________________________________________________________
2. Somebody looked through my information.
_______________________________________________________________________________3. Did the boy draw a picture of his father
_______________________________________________________________________________
4.My parents didn’t allow me to go out in the past.
_______________________________________________________________________________
5.He lost his keys on the way to school.
______________________________________________________________________________
参考答案：
The problem was solved by themselves yesterday.
My information was looked through by somebody.
Was the picture of his father drawn by the boy
I wasn’t allowed to go out (by my parents) in the past.
His keys were lost on the way to school.
预习导学：Look and describe ice-cream
I like eating ice-cream because it’s sweet , cool and delicious.
1a The words in the box describe how food can taste. Write them under the correct pictures. Some pictures have more than one word.
potato chips : salty , crispy 2.lemon : sour , fresh
3.ice-cream : cold , sweet , delicious 4.salt eggs : salty , delicious
1b Write the name of a different food after each word.
sweet _____________________________________________________
crispy _____________________________________________________
salty ______________________________________________________
sour ______________________________________________________
参考答案：
sweet: banana , apple , candy , ice-cream
crispy : potato chips , cookie
salty : Beijing Duck , potato chips , salted fish , salt eggs
Sour: grape , lemon
1c 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.
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 custom was happy in the end. T F
参考答案：
F 2.F 3.T 4.F 5.F 6.T
Discuss : what do we need when we make potato chips
Potatoes , salt , oil ....
How to make potato chips
First , wash the potatoes and cut up them into pieces. Then put them into the boiling oil for a few minutes. Next , put the slices of fried potato chips in the plate. Put some salt on the pieces of potato chips. At last , enjoy the delicious food.
Listen and answer the questions.
Who invented potato chips ____________________________________________
When were they invented ___________________________________________
What did the custom order at the restaurant
____________________________________________________________________
What did the custom think of the potato chips George cooked at first
____________________________________________________________________
How did George cook the potatoes then
___________________________________________________________________________
___________________________________________________________________________
参考答案：
They were invented by a cook called George Crum.
In 1853.
He ordered a plate of fried potatoes.
He thought they were cut too thick.
He cut the potatoes really, really thin and cooked them for a long time until they were crispy. And he put lots of salt on them so they were really salty.
1d Listen again. Complete the sentences.
The History of Potato Chips
Do you know how potato chips were invented Potato chips 1.____________ by a cook called George Crum. They were invented in2. ________.
George Crum cut the potatoes really, really 3._______ and then cooked them for a long time until they were 4.________. Finally he put lots of salt on them so they were 5.__________.
参考答案：1.were invented 2.1853 3.thin 4.crispy 5. really salty
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: It’s said that they were invented by a cook called George Crum.
B: When was that
A: Oh, it was back in 1853.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.
B: Why was it an accident
A: 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.
B: And then
A: 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.
一些知识点小结：
Potato chips were invented by mistake.
其中的by mistake 表示“错误的、由于疏忽造成的”，又如：The old man took away my umbrella by mistake on a cold day.
The customer thought the potatoes were not thin enough.
enough的用法:形容词+enough ; enough + 名词。例如：Who is brave enough to eat my house \ I didn’t have enough money to buy things I like.
George wanted to make the customer happy.
make和let都可以表示“使”、“让”，但是let 只能接动词原形，make 既可以接动词原形，也可以接形容词。例如：Let’s go shopping. The sad movie makes me want to leave.\ The sad movie makes me sad.
The custom was happy in the end.
in the end类似于at last , 表示“最后”，finally也可以表示这个意思。
例如：Finally , I tried my best and succeeded.
I tried my best and succeeded in the end.
At last , I tried my best and succeeded.
同学们，以上就是人教版英语九年全册第六单元Unit 6 When was it invented Section B (1a-1e)导学案，希望你们认真对待。其中“温故知新”部分是对前面内容的复习巩固，如果遇到问题，要及时通过提问、讨论等方式解决。
英语的学习，不是一天两天的事情，需要长期的坚持，只要功夫深，铁杵磨成针！只要你下定决心，一定可以排除万难，加油，同学们！