Unit 6 When was it invented?Section A 3a-3c 课件(共22张PPT) 人教版英语九年级全册

(共22张PPT)
Unit 6
When was it invented
Section B 3a - selfcheck
How to introduce an invention
What is the invention
When was it invented
The advantages and disadvantages of the invention.
How to use the invention
They are some inventions.
1. What is the invention
Write down the answers according to the tips.
(a computer)
It is a computer.
2.When was it invented
(1977)
It was invented in 1977.
Let’s learn about the advantages and disadvantages of the computer.
As the saying goes, every coin has two sides.
Free talk
How to introduce an invention
invention
Where
what
when
how
who
why
…was invented in+ 年份
…was invented on+月日，年
...was/were invented by...
...invented ...
because....
in order to.....
There be...
color,shape,size
It was used for …
by accident/chance/mistake
at the same time
although
in/at+地点
What do you think of these inventions
They are useful and helpful and they make our life much easier and much convenient.
There are so many inventions in our daily life .They are
useful and helpful .
New drills
What problems do you have in your daily life
Can you think of an invention that could help you
I can’t take notes quickly in class.
I can’t remember the notes well.
I can’t get up on time.
3a
Think of something that you do not like to do. Then think of an invention that could help you. Make notes.
take notes quickly
pre-writing
What can we invent to solve these problems
I can’t remember the notes well.
I can’t get up on time.
Problem:___________________________________
New invention: ______________________________
What it is used for:___________________________
Problem:___________________________________
New invention: ______________________________
What it is used for:___________________________
remembering notes well
a memory robot
helping me remember well and quickly
getting up on time
a special clock
waking me up on time
Writing
Our school is doing a survey on"Inventions that changed the world" . Please write a short passage to talk about what invention do you think is the greatest
— The greatest invention in the world
There are many wonderful inventions in the world
now ， ……
1．体裁：
2．时态：
3．人称：
4．写作思路：
一、三人称
细化审题——明要求
1
说明文
一般现在时，一般过去时(被动语态)，一般将来时(畅想未来)等。
1.开门见山引出你想介绍的发明物
2.接着介绍它的基本信息、用途（发明背后的故事，发展情况，操作方法，普及程度）
3.说明你认为它最伟大的原因，最后提出对未来的畅想。
Para1 Introduce the name of the great invention
There are many wonderful inventions in the world now ,
such as the cellphone ,the computer and the Internet .
In my opinion ,the greatest one is the Internet.
In my view
I think that +从句
介绍用途
It is used for doing
People use it to...
It can help us to do
First,
second,
third
Besides,
What 's more ,
Last but not least
Para2 Introduce the basic facts of the great invention
It was invented by many computer scientists in the United States in the last century.
get information
study
work
go shopping
watch movies listen to music
In a word,the Internet is the greatest invention because
Para3 Explain the reason ,look forward to the future
All in all
it has made a big difference to the world 对…有巨大影响
it has changed our lives in many ways.
it can help us live a better/happy life .
it makes our life so convenient.
With the development of science and technology (随着科技的进步),there will be more useful inventions in the world.I believe that the world will be more beautiful and we will live a better life .
Internet—the greatest invention in the world
There are many wonderful inventions in the world now ,such as the cellphone ,the computer and the Internet .In my opinion ,the greatest one is the Internet.
It was invented by many computer scientists in the United States in the last century.Nowadays,it can be used in many ways.First, it helps people get information much more easily than before. Second,by using the Internet, people can do almost everything at home, such as studying, working and shopping. Third, it's also a great way for people to relax. People can play games,watch movies and listen to music on the Internet.
All in all, I think the Internet is the greatest invention in the world because it has made a difference to people's lives . With the development of science and technology ,there will be more inventions in the world.I believe the world will be more and more beautiful and we will live a better life .
Example
润色成篇——出佳作
3
一、根据句意及汉语提示写单词，使句子完整、通顺。
1.Most members at the meeting ___________（提到） that
protecting the environment was very important.
mentioned
2.The air was filled with the ______（气味） of flowers.
smell
3.If you give water to a small baby to drink, you have to _____
（煮沸） it first.
boil
4.In less than 100 years, tea became a _________（国家的） drink
in England.
national
5.This decision is not only for the country, but it is especially for
______（贸易） itself.
trade
6.We were asked to ____（列出） the rules that we must follow in
the school.
list
二、根据句意提示，填写出单词的适当形式。
1. Peking Duck is famous for its ______/'krIspi/ skin and delicious meat.
2. The girl in the shop always tries her best to please every _________(顾客)．
crispy
customer
3. In 1879, Edison i_________ the electric light bulb after many failures.
4. The lemon is too s_____. I don't like to eat it.
5. The water tastes ______(salt). It is almost like sea water.
nvented
our
salty
三、按要求完成下列句子。
1. A mouse ate half of the cake last night. (改为被动语态)
_______________________________________________
2. Karl Benz invented the first car in 1885. (改为被动语态)
_______________________________________________
Half of the cake was eaten by a mouse last night.
The first car was invented by Karl Benz in 1885.
3. The telephone was invented by Mr.Bell．(对画线部分提问)
______________________________________________________________________________________________
4. The website was set up in 2022. (对画线部分提问)
_______________________________________________
5. Was Tom asked to come early (做肯定回答)
_______________________________________________
Who was the telephone invented by？/ Who invented the telephone
When was the website set up
Yes, he was.