Unit 6 When was it invented-Section B (1a-1e)课件(共12张PPT)

(共12张PPT)
Unit 6
九年级英语RJ版·上册
Section B (1a-1e)
一、新课引入
What did they eat
What did the big dog think of the ice-cream
Warming up
二、新课讲解
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
sour
salty
sweet
salty
Write the name of a different food after each word.
二、新课讲解
sweet ____________________________
crispy ____________________________
salty ____________________________
sour ____________________________
banana
apple
Beijing Duck
potato chips
grape
candy
cookie
cheese
salted fish
lemon
二、新课讲解
Listen and circle T for true or F for false.
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.
T F
T F
T F
T F
T F
T F
二、新课讲解
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 __________.
thin
really salty
crispy
were invented
1853
二、新课讲解
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: …
by mistake 是个介词短语，意为 “错误地；无意中”，在句中作状语。如：
Somebody took my umbrella by mistake. 有人错拿了我的伞。
I picked up your bag by mistake. 我错拿了你的包。
Language points
二、新课讲解
1. Potato chips were invented by mistake.
enough, 意为“足够的；足够地”，既是形容词，也是副词。修饰名词时放在名词的前面；修饰形容词或副词时放在后面。如：
Language points
二、新课讲解
2. The customer thought the potatoes were not thin enough.
I have enough time to finish reading the book. 我有足够的时间读完这本书。
The girl is old enough to go to school. 这个女孩上学足够大了。
三、归纳小结
四、强化训练
1. Potato chips ______________(invent) by mistake.
2. The customer thought the potatoes ________ (not be) thin enough.
3. George made the customer ________ (happy), because they were salty.
6. Tom cut the potatoes really thin and then ________ (cook) them for a long time.
were invented
were not
unhappy
用所给单词的正确形式填空。
cooked
五、布置作业
Preview the new words and expressions in 2b.
Write 4 sentences with “invent/invention/inventor”.