人教版九年级全册 Unit 6 When was it invented?Section B (3a-self check) 课件 (共39张PPT)

(共39张PPT)
Section B 3a-3c
Unit 6
When was it invented
根据句意及首字母提示完成单词。
1. These people were divided into two groups according to their ages.
2. Look, a few pears remain on the trees. Let’s pick them.
3. It’s said that the potato chips were invented by mistake.
4. The hot weather made the milk sour.
5. My grandparents often goes shopping with a basket (篮子).
Eg . 1 Write an article using the notes
in the box.
Who: college students
What: metal pie plate, flying disk
When: 1950s
Where: bakery Bridgeport, Connecticut
How: students eat pie, throw pie plates
Today: clubs, magazines, festival
A sample version
From pie plate to flying disk
The flying disk was invented by college students.
Flying disk is a metal pie plate. In the 1950s, several
college students ate pies made by a bakery in
Bridgeport, Connecticut. They found it interesting to
throw the pie plates with each other. Then it became
a game. Today, there are flying disk clubs, magazines
and even a festival.
a pen that listens and writes
Eg .2 New invention:
Use:
It can listen to the writer and
write by itself.
Price :
$ 50
music candle
activity glasses
temperature cup
Problem: we often get hurt by the hot
water in the cup.
New invention: a cup that can tell you the
temperature of the water.
Use: It can show the temperature of the water.
Price: $ 50
3a
Think of something that you do not like doing. Then think of an invention that could help you. Make notes.
Problem: quickly taking notes in class
New invention: a special pen
What it is used for:
Price:
内容提示
Problem: quickly taking notes in class
New invention: a special pen
What it is used for:
Price:
Talk about it
A: This special pen was invented by Zheng Jie. It has three colors and it is
used for learning English.
B: How is it special
A: When the red color is turned on, the pen reads out English as it is moved
along the line.
B: When about the black color
A: When the black color is turned on, the pen finds out the structure of the sentences
as it is moved along the line.
B: When about the yellow color
A: When the yellow color is turned on, the pen shows the formation and meaning of
the word as it is moved along the line.
B: Wonderful! Where can I get one
A: I am the shop owner selling this kind of pen.
3b
Imagine you are a businessperson. Write a description of your new invention. Try to sell the invention to the class.
Your time to write
This special pen was invented by Liu Jie. It has three colors and is used for
Self check
Unit 6
When was it invented
重点单词复习
1.project n. 项目，工程；
2. pleasure n. 高兴，愉快；
3. daily adj. 日常的，每日的；
4. mention v. 提到，说到；
5.nearly adv.几乎，差不多；
6.boil v. 煮沸，烧开；
7.remain v. 保持不变；剩余；
8.national adj.国家的，民族的；
9. low adj.低的，矮的；
10.translate v. 翻译；
11.lock v.锁上；n. 锁；
12.sudden adj. 突然的
13. crispy adj. 脆的；酥脆的；
14. salty adj. 咸的；
15.sour adj. 酸的，有酸味的；
16.customer n. 顾客。
17. Canadian 加拿大的，
18. divide v. 分开，分散；
19. hero n 英雄，男主角；
20. professional adj. 职业的，专业的；
重点短语复习
1. shoes with special heels 特殊后跟的鞋子
2. hot ice cream scoop热的冰其淋勺子
3. run on electricity 电动的
4. be used for 被用作
5. the subject for my school project学校项目的课题
6. our daily lives 我们的日常生活
7. have a point有点道理
8. by accident偶然，意外地
9. over the open fire在火堆上
10. fall into the water 落入水中
11. take place 发生
12. without doubt毫无疑问
13. at a low price 以一个很低的价格
14. translate the book into different language
把书翻译成不同种的语言
15. all of sudden 突然
16. by mistake 错误地
17. a much-loved and active sport
一个深受喜爱并且积极的运动
18. divide…into 把…分开
19. stop sb from doing sth
阻止某人做某事
20. look up to钦佩，仰慕
21. the professional basketball
groups职业篮球机构
22. use someone else’s idea
借用其他人的想法
重点句型
1. I think the TV was invented before the car.
我认为电视是在轿车之前发明的。
2. ---When was the telephone invented
--- 电话是什么时候发明的？
--I think it was invented in 1876.
---我认为电话是在1876年被发明的。
3. ---What are they used for
---他们可用来做什么？
---They are used for changing the style of the shoes ---他们可用来改变鞋子的样式。
4. ---When was the zipper invented
---拉链是什么时候发明的？
----It was invented in 1893 .
--它是在1893年被发明的。
5. ---Who was it invented by
---它是由谁发明的？
---It was invented by Whitcomb Judson.
---它是被惠特科姆.贾德森发明的。
6. ---When was tea brought to Korea
---茶是什么时候被带到韩国的？
---It was brought to Korea during the 6th and 7th centuries.
---它是在六至七世纪被带到韩国的。
7. ---What is the hot ice-cream scoop used for -这个热的冰其淋勺子是用来做什么的？
---It’s used for serving really cold ice-cream
---它是用来提供真正冷的冰其淋。
1. I don’t like eating chocolate. The taste is too _______.
2. Mom added salt but it still wasn’t _____ enough.
3. I prefer lemons to oranges. I like the _______ taste.
4. She likes ________ cookies. They are hard, dry and easily broken.
crispy
sweet
salty
sour
crispy, sweet, salty, sour
Fill in the blank with the correct word given.
Do you know the difference
be invented by
be invented in
be invented to
Emphasize on person
Emphasize on time or place
Emphasize on the usage
Can you make sentences with them
1. Telephone ______________ Alexander
Graham Bell, who is an Englishman.
2. various things have ______________ record
the history of human being.
3. paper ____ first __________ ancient China,
and it is one of the most important inventions
in the world.
be invented by/in/to
was invented by
invented in
was
been invented to
It is often difficult to decide on the inventor of certain inventions. This is because sometimes a few people may ______ things which are _______ the same. It’s hard to tell who came up with the idea first.
invent, doubt, mention, nearly, website, all of sudden
1. Complete the passage with the correct forms of the words in the box.
invent
nearly
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.
all of a sudden
doubt
websites
mention
Self check 2 Rewrite these sentences using the passive voice.
1. Someone stole my watch.
2. They used five eggs to make this big cake.
My watch was stolen by someone.
Five eggs were used (by them) 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.
When was the personal computer invented by them
We were asked (by them) not to run in the hallway.
The video was taken back to the store (by someone).
When were they invented
abacus in the 19th Century
binoculars in 1600
camera in 1839
bicycle in 1839
car in 1885
motorcycle in 1885
toothbrush in 1780
washing machine
in 1858
根据汉语及首字母写出单词。
1. When I began to sing，he laughed and made
me very e___________(尴尬的)．
2. After a long trip to Europe，1 felt very
e________(精疲力竭的)．
3. a_______：to make known publicly
4. d_______：to give an account of in speech
or writing
embarrassed
exhausted
announce
describe
5. a_________：one that is invested with
this power，especially a government or government officials.
6. Last night a friend of mine invited me to a c_______ party (化装舞会)．
authority
costume
Self check 3 Find out information about one invention and write sentences below.
Invention: When:
Who:
Purpose:
Homework
Choose one of the inventions which you
think is the most important, and then write
a paragraph about it.