人教版九年级全册Unit 6 When was it invented?课时6SectionB(3a-SelfCheck)课件(共13张PPT，内嵌视频)

(共13张PPT)
Section B (3a-Self Check)
Unit 6
When was it invented
课时教学目标
语言能力:
能够恰当运用一般过去时的被动语态介绍某一项发明。
思维品质:
通过介绍某项发明，培养分析能力和创新能力。
文化意识：
培养学生热爱科学、勇于探索的精神。
学习能力:
通过思考写作步骤和架构搭建及如何组织语言，提升统筹规划能力。学会使用被动语态介绍某项发明。积累写作技巧和锻炼写作思维，培养写作能力。
Enjoy a video.
Lead-in
What’s the invention
It’s a suitcase.
It was invented by a pupil called Jiang Junming.
Who was it invented by
What is it made of
It is made of wood, metal, plastic and so on.
What is it used for
It is used for carrying things or people.
3a
Problem: ________________________
New invention: ____________________
What it is used for: _________________
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 quickly
3b
Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.
3b
第三人称为主
说明文
一般现在时为主，穿插一般过去时、一般将来时
被动语态为主
3b
List an outline
推销你
的新发明
引出话题
介绍新发明
推荐购买
I’d like to introduce a new invention to you.
名称 The new invention is a(n)...
发明者及发明时间It was invented by... in/on...
外形 It has... /It looks like...
材料 It is made of/from...
用途 It’s used for/to...
操作方法 It is controlled by... You need to...
价格 It is only... yuan. It’s cheap and good. You can afford it.
It’s really a convenient and useful invention. Come and buy one!
3b
Sample writing
I’d like to introduce a new invention to you. It’s a special pen and it was invented by Liu Jie in May, 2024. It has three colors and it is made of plastic and steel. It is used for taking notes quickly. It is useful if you have to write down a lot of notes. The pen comes with a microchip that can store lots of words and sentences that you will use. When you are writing, you just need to write the short forms with the pen. It is controlled by a button. When you press the button on the pen, all the short forms will change into the actual words. It’s really a convenient and useful invention and it’s only 30 yuan. You can afford e and buy one!
1
Complete the passage with the correct forms of the words in the box.
invent doubt mention website all of a sudden
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
all of a sudden
doubt
Self Check
websites
mention
决定
几乎相同
想出
导致、引起
用……做……
提供关于……的信息
2
Self Check
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).
Five eggs were used (by them) to make this big cake.
When was the personal computer invented
We were asked not to run in the hallway.
The video was taken back to the store (by someone).
3
Self Check
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
Summary
How to describe the invention Sentence structures Writing skills
what invention The new invention is a(n)... List the outline before writing
the inventor and the time It was invented by... in/on... the shape and the material It has.../It looks like... It is made of/from... the application and the operational method It’s used for/to... It is controlled by... You need to... Homework
实践性作业
Think of an interesting invention and think about how to make it with materials in your home.
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