人教版2025九年级英语Unit 6 When was it invented Section B3a~Self Check课件(共27张PPT)

(共27张PPT)
Section B (3a~Self Check)
Unit 6
When was it invented
Learning
Objectives
1
2
3
回顾本单元所学习的一些物品的发明，更好地梳理所学的重点短语和句式；能够结合问题理清本单元写作的基本框架。（学习理解）
灵活应用所学知识描述图片中所呈现的有关物品发明、功能等相关信息的描述；能够结合所梳理的框架完成3b。（应用实践）
以科技节举办的最伟大的科学发明演讲比赛为背景，向大家介绍自己最熟悉的一个发明创造，介绍其具体是什么、做什么的、为什么会喜欢它等；能够认识到发明的核心能力即是对世界万物保持好奇心。（迁移创新）
通过本课时学习，我们能够：
What inventions have been mentioned in this unit
computer
car
zipper
TV
telephone
basketball
tea
potato chips
What inventions have been mentioned in this unit
computer
car
zipper
TV
telephone
basketball
tea
potato chips
Why
When
Who
Shen Nong
around 5,000 years ago
by accident
What inventions have been mentioned in this unit
computer
car
zipper
TV
telephone
basketball
tea
potato chips
When
Who
How
Why
in 1853
George Crum
The customer said the fried potatoes were cut too thick and sent them back to the kitchen. George was angry.
1. Cut the potatoes really, really thin.
2. Cooked them for a long time until they were crispy.
3. Put lots of salt on them.
What inventions have been mentioned in this unit
computer
car
zipper
TV
telephone
basketball
tea
potato chips
When
Who
How
Why
for fun and exercise
over 100 years ago
James Naismith
1. Players are ________________ teams.
divided into two
2. Players on the same team must _____________
to get the ball _________________________.
in the other team’s basket
work together
3. At the same time, they need to _____ the
competing team form ________.
stop
scoring
In fact, inventions are everywhere in our life. They are
useful and helpful .
What problems do you meet in the life Can you invent something to solve
I am not able to take notes quickly in class.
It’s very hard for me to get up early.
Can you invent something new to solve those difficulties
I can’t do
homework correctly.
Problem: quickly taking notes in class
New invention: a special pen
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.
taking notes quickly
2. Problem: ___________________________
New invention: ______________________
What it is used for: __________________
3. Problem: ___________________________
New invention: ______________________
What it is used for:
____________________________________
____________________________________
a special clock
getting up early
waking me up
doing homework
a robot
doing homework with me
It can be my favorite homework partner.
3b
Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.
Who was it invented by
What is it made of
What is it used for
What does it look like
Where or when can it be used
How much will it cost
Try to use the following expressions:
It was invented by...
It is made of…
It is used for...
not only...but also...
It is very important / of great importance because...
In my opinion...
Try to tell us the following information:
3b
Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.
This special pen was invented by Liu Jie. It has three colors and is used for_________________________________________________________________________________________________________________________
_____________________________________________________________.
Write it like this:
Idea Expressions
思路点拨
简单介绍该钢笔
被发明及其特点
重点介绍该钢笔
的用途
...was invented by… is used for…
useful…
comes with… program the words…
write short form…
推荐购买
contain up to… make changes…
This special pen was invented by Liu Jie. It has three colors and is used for taking notes quickly. It is very useful if you have a lot to write down. The pen comes with a microchip that can store a list of common words that you will use. You can program the words you will use often into the microchip’s memory, then assign a short form to each word. When you are writing, you just need to write the short forms with the pen, press a button on the pen and the short forms will change into the actual words. The microchip can contain up to 50 words and you can make changes to the list of words whenever you need to.
Sample writing
What invention is it
Who was it invented
What is it used for
What does it come with
How many words can the microchip contain
How does it work
What invention is it
Who was it invented
What is it used for
What does it come with
How does it work
How many words can the microchip contain
科技节要到了，学校举办主题为 “The Greatest Invention”的英语演讲比赛，请你写一篇不少于80词的演讲稿。
必须包括以下要点：
1. Introduce the invention. 2. What's it used for
3. Why do you like it
It’s time to write.
审清要点
细心审题
定体裁：说明文
定人称：介绍一项发明，人称为第三人称，表达想法为第一人称
定时态：一般为一般现在时和一般过去时
定语态：被动语态
简单介绍这个发明。
详细说明这个发明的情况。
Beginning
Ending
Body
说出自己的想法。
Beginning
Body
Ending
Usage
Name ＆Time
Instruction
Price
Recommendation
It was invented… Because it…
It is used for…
First… then… It costs…
How to introduce
an invention
Outline
Thanks to …, ours lives have been greatly improved.
There have been many great inventions that have changed …But…is the greatest invention in my mind.
短语储备
daily lives日常生活
be made of/from 由……制成
by accident 偶然；意外地
be used to/for 被用来……
at that time 在那时
without doubt 毫无疑问；的确
not only … but also … 不但…而且…
thanks to 由于；多亏
开头句：
Among all the modern inventions, I think … is the most important one.
I think … is such a great invention.
In my opinion, … is one of the greatest inventions.
中间句：
It was invented … ago.
It was made of/from …
It was used to/for …
This invention can not only … but also …
This invention made it … for sb. to do sth.
句型荟萃
句型荟萃
句型荟萃
句型荟萃
经典名句：
Labor creates the world. 劳动创造了世界。
One of the greatest human qualities is its creativity.
人类最伟大的品质之一便是其创造性。
结尾句：
Thanks to …, our lives have been greatly improved.
Without doubt I like … because …
… play(s) an important part in our daily lives.
Writing
确立篇章
话题引出
（Beginning）
↓
↓
↓
介绍发明
（Main Body）
↓
↓
表达想法
（Ending）
The Greatest Invention
There have been many great inventions that have changed our lives. But the light bulb is the greatest invention in my mind.
It was invented in 1854.It was invented by Thomas Edison. And it is used for seeing in the dark. It's made of glass and looks like a ball.It has brought bright to the world since it was invented. With light bulb, people can do more things than before.
I think it’s a great /useful/invention. I believe that it is a small invention that changed the world. What's more,Thomas Edison was a great inventor. I also want to be an inventor like him.
Key points Check
Good Structure 3’
Good sentences 3’
Correct grammar/spelling 5’
Good logic 2’
Tidy writing 2’
互评
Check List
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, website, all of sudden
I. Complete the passage with the correct forms of the words in the box.
invent
all of a sudden
doubt
websites
mention
Self Check
II. Rewrite these sentences using the passive voice.
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.
The video was taken back to the store (by someone).
We were asked not to run in the hallway (by them).
Self Check
III. Find out information about an invention you would like to know more about and write sentences below.
Invention: _________________________
When: _________________________
Who: _________________________
Purpose: _________________________
in 2013
umbrella with a light
Li Meng
seeing in the rain in the dark
Self Check
Be curious about everything!
Homework
Must do: 1. Polish your passage according to your group members’ advice;
2. Make a mind-map to review this unit.
Try to do: Search for more information about different inventions.