Unit 6When was it invented? SectionB 3a~self check课件(共22张PPT) 人教版九年级英语全册

(共22张PPT)
3a-Self Check
Unit 6
When was it invented
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.
Self Che
课前三分钟
invent
all of a sudden
doubt
websites
mention
提出；想出
Self Check
Complete the passage with the correct forms of the words in the box.
1
某些
怀疑
What inventions have we learned
inventions
How to introduce the invention
computer
car
telephone
television
basketball
potato chips
tea
shoes with light
hot ice-cream scoop
zipper
...
高铁：High-speed railway
共享单车：Bike-sharing
支付宝：Alipay
网购：Online shopping
无人机：Drone
shoes with special heel
How to describe an invention
Who was it invented
How was it invented
When and wherewas it invented by
What is it used for
What are the influences of it
What is it made of
How does
it work
......
引入发明
1.在历史上和我们的生活中，有各种各样的发明。(用there be 句型引入发明)
There are different kinds of inventions in history and in our daily lives.
2.在所有发明之中，我最喜欢智能手机因为它们给我们的生活带来了便利。(总体介绍喜欢该发明的原因)
Among all the inventions, I like the mobile phones best because they bring convenience to our lives.
3.伟大的发明如智能手机、高铁列车，极大地改变了世界。(用like 进行举例)
Great inventions, like smart phones and highspeed railway, have greatly changed the world .
4.随着科技的快速发展，伟大的发明在生活中发挥了重要的作用。
(With...of..., ... is/ are play an important role in...)
With the rapid development of technology,
great inventions are playing an important role in our life.
When and where was it invented by
Basketball is a much-loved and active sport that is enjoyed by many for fun and exercise. It is over 100 years old and is played by millions of people all over the world. It is believed that the first basketball game in history was played on December 21, 1891. Then in 1936 in Berlin, it became an event at the Olympics.
It is believed that ... in history was played on + 月日，年，in+地点.
It is said that ... was invented in + 年.
It was invented in + 年.
Basketball was invented by a Canadian doctor named James
Naismith, who was born in 1861. When he was a college teacher, he
was asked to think of a game that could be played in the winter. Dr.
Naismith created a game to be played inside on a hard floor. Dr.
Naismith divided the men in his class into two teams and taught
How was it invented
... was invented by a +国家的+ 职业 named +人名, who was born in 年份.
Who was it invented
It was invented by +人名
... was invented by accident.
When he was a +职业, he was asked to think of a ... that could be ...
... created a ... to be ...
What is it used for 用途
1.无人机非常的有用。一方面，他们可以帮助人们做危险的工作。另一方面，它可以被用于在地震后寻找人类。(第一句总写描述无人机。然后用 for one thing,for another 连接两点进行具体描述)
The drone can be quite useful.
For one thing, it can help people do dangerous jobs.
For another, it can be used to look for people after an earthquake.
2.高铁不仅缩短了旅行的时间，并且让旅行更加舒适。(用 not only...but also...连接高铁的优势)
High-speed railway not only shortens the travel time,
but also makes the trip more comfortable
4.我们可以用电脑做很多事情，比如说听音乐、看电影、搜索信息等等。(用 such as 进行举例)
We can do many other things with computers, such as listening to music, watching movies,
searching for the information and so on.
3.我们在任何时候任何地方都可以和用手机和别人保持联系。(用 anywhere, anytime 强调手机便利性)
We can keep in touch with others anytime and anywhere.
5. 我们甚至出门的时候不需要带钱，因为我们可以用手机支付。(用 even 加强语气)
We even don't need to bring money when going out because we can pay with the phone.
What are the influences of it 影响
1.在 5G 网络的帮助下，我们的生活变得越来越有趣以及便利。(with the help of...)
With the help of 5G, our lives become more and more interesting and convenient.
2.一些发明是如此有用，他们使我们的生活变得更加丰富多彩和方便。
Some inventions are so useful that they make our life become more colorful and convenient.
1.总之，作为中学生，我们应该具有科学探索精神，积极参与创造和发明。
All in all， as middle school students， we should have scientific exploration spirit and take an active part in creating and inventing.
呼吁
本单元的话题是“Invention (发明)”。
写作内容通常要求根据图表或文字提示介绍发明物的相关情况（历史、用途、特点等），或者针对生活中的实际情况，提出自己的发明建议。
写作时，要求学生能够运用本单元的语言知识，尤其是一般过去时的被动语态来组织语言。
话题分析
Analysis
by listening music.
by doing exercises.
Analysis
定人称
定时态
定体裁
说明文
一般过去时
第三人称
一般现在时
被动语态
Show
Pens are important in our daily life.I want to intorduce a special pen to you because it is a very useful invention.
The special pen pen was invented by Liujie.It has three colors and is used for taking notes quickly.It is made of plastic.He invented it because he wants to takes notes quickly.It is very useful if you have a lot to write down. The pen can store a list of common words that you will use. When you are writing, you just need to write the short forms with the pen, press a button on the pen the related words will appear. Besides, it can also turn our voice into actual words.
Without doubt I like the special pen because I can take notes quickly in class now. Don’t you think it’s cool I believe that it will
be popular in the future.
这是一篇事物介绍类的说明文，根据题目提示可考虑采用下面的模板。
the special pen
引出话题
介绍发明
畅想未来
... important in our daily life.
I want to introduce to you
because … is a very useful invention.
时间:The pen was invented in ...by...
外形：... was long and round.
材料:It is made of…/It looks like…
原因: It was invented… Because it…
用途:It is used for… First… then…
It can not only … but also …
Without doubt I like because.....
Don’t you think....？
历史上很多伟大的发明家倾其一生，创造了许多发明，给人们带来了生活上的便利。请你发挥想象设计一项小发明去解决生活或学习中的一个困难或问题。根据以下表格内容提示用英文写一篇短文，并向校报投稿介绍这项小发明。参考词汇：scientific exploration spirit 科学探索精神
介绍一项小发明
简述发明对人们生活的影响 使人们的生活更多彩和便利
介绍自己的小发明 ◎名称：……(请你补充)
◎用途：……
◎操作方法：……
呼吁 中学生要用科学探索精神，积极发明创造
第一步：审题。文体：说明文　
人称　 　　时态　 _
　一般现在时
　第一、第三人称　　
第二步：列框架。
第三步：列出主要的短语。
1.起重要作用　 _
2.社会发展的象征　 　 _
3.使生活更多彩　 _
4.作为中学生　 _
　as middle school students
　make our life more colorful
　a symbol of the social development　
　play an important part
第四步：重点句子仿写。
1. make sth.+adj.　使某物/某事……
一些发明使我们的生活更多彩和便利。
　 _
2. be used for doing被用来……
它被用来快速记笔记。
　 _
　It is used for taking notes quickly.
　Some inventions make our life more colorful and convenient.
3. need to do sth.需要做某事
当你写字时，你只需要用这支笔写出缩写形式。
　 _
_
with the pen.
　When you are writing， you just need to write the short forms
第五步：运用and，or，so，because，but，first，then等连接词将以上要点连成文章，并注意句型多样化。
　Some inventions are so useful that they make our life become more colorful and convenient.(发明对人们生活的影响)
My invention is a special pen.(名称)It is used for taking notes quickly.The pen has a microchip that can store a list of common words which you will use.(用途)When you are writing， you just need to write the short forms with the pen， press a button on the pen and all the short forms will change into the actual words.(操作方法)Is it amazing？
All in all， as middle school students， we should have scientific exploration spirit and take an active part in creating and inventing.(发出呼吁)　
Great inventions are the symbols of the social development.______
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项目 自评分 互评分 老师评分
内容分 1.简述发明对人们生活的影响；(1分) 2.介绍你的小发明的名称、用途和操作方法；(4分) 3.发出呼吁。(1分)
语言分
连贯性
合计(总分15分)