(共17张PPT)
Unit 6
Section B(1a-selfcheck)
When was it invented
1.统治者；支配者 n.
2.国家的；民族的 adj.
3.受欢迎；普及 n.
4.地震 n.
5.饼干 n.
6.音乐的；有音乐天赋 adj.
7.疑惑；疑问 n.
8.贸易；交易 n.
9.发出......气味；闻到 v.
10.锁上 v.
ruler
national
popularity
earthquake
biscuit
musical
doubt
trade
smell
lock
How do the bread and snack taste
Sweet and delicious.
Can you think of any other flavors
Salty, hot, bitter, sour, fresh …
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
______ ______ ______ ______
______ ______ ______ ______
crispy
sour
salty
sweet
cold
delicious
salty
fresh
Research & Extension
sweet ____________________________
crispy ____________________________
salty ____________________________
sour ___________________________
Write the name of a different food after each word.
banana
apple
Beijing Duck
potato chips
1b
grape
candy
cookie
salt
salted fish
lemon
Research & Extension
Research
Do you like chips Do you know how they were invented
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 custom was happy in the end.
Listen and circle T for true or F or false.
1c
T F
T F
T F
T F
T F
T F
Research & Extension
课时练83页
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
1d
thin
really salty
crispy
Research & Extension
Make a conversation about the invention of potato chips. Use the information in 1c and 1d.
1e
Interaction
A:Did you know potato chips
were invented by mistake
B:Wow,I didn't know that.Who
invented them
A:...
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
1d
thin
really salty
crispy
Research & Extension
Feedback
It is often difficult to decide on the inventor of certain inventions. This is because sometimes a few people may ______ things which are nearly the same. It’s hard to tell who came up with the idea first. Some inventions can also lead to other inventions _____________. So some people _____ whether the inventor came up with the idea himself or herself. They think that the inventor used someone else’s idea to create his or her invention. That is why books or _______ usually _______ more than one inventor when giving information about inventions.
invent, doubt, mention, nearly, website, all of sudden
1. Complete the passage with the correct forms of the
words in the box.
invent
Feedback
all of a sudden
doubt
websites
mention
1. Someone stole my watch.
_________________________________
2. They used five eggs to make this big cake.
__________________________________
3. When did they invent the personal computer
__________________________________
4. They asked us not to run in the hallway.
__________________________________
5. Someone took the video back to the store.
__________________________________
My watch was stolen (by someone).
When was the personal computer invented
Five eggs were used to make this big cake.
2. Rewrite these sentences using the passive voice.
We were asked not to run in the hallway (by them).
The video was taken back to the store (by someone).
Feedback
Problem: ________________________
New invention: ____________________
What it is used for: _________________
3a
Think of something that you do not like to do. Then think of an invention that could help you. Make notes.
a special pen
quickly taking notes in class
taking notes in class
Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.
3b
有用句型：
1. I think … is a very useful invention.
我认为……是一项很有用的发明。
2. … was invented by …
……是由…… (某人)发明的
3. … was invented in …
……是在…… (某时间)发明的
4. It was used for …
它被用来……
5. … is made of ………
是由……(材料)制成的
One possible version
About two thousand years ago,there was no paper in the world,People used to carve characters in stone,wood or bamboo slips.The rich people wrote on silk or sheep skin.
A great inventor named Cai Lun tried his best to invent and improve paper.He taught people to make paper with waste materials like barks,used cloth and fishing nets.Finally,paper of good quality was invented.It could be used for writing.
After the invention,books became more and more popular all over the world.The invention of paper is very important in the development of human civilization.We will remember Cai Lun,one of the greatest inventors,for ever.
Section B
脆的
酸的
咸的
顾客
无意中
最后
突然
想出主意
导致
crisp
sour
salty
customer
by mistake
in the end
all of a sudden
come up with an idea
lead to
