Unit 1 When was it invented Section B 3a-Self check课件(共35张PPT) 鲁教版（五四制）九年级英语全册

(共35张PPT)
Unit 1 When was it invented
Section B 3a-Self check
写作课
。
本单元以"Inventions"为话题，主要谈论了历史上及生活中的一些重要发明，要求学会介绍某项发明的用途、特点等。该话题常见的命题形式有∶介绍历史上的一项重要发明;介绍你身边的人或你自己的一项新发明。
1.能用“be invented in/by..., be used for…,be made of/from/by...”等句型描述发明物的历史。
2.能够在写作中运用素材收集、话题解读、问题回答、遣词造句、连句成篇、篇章结构布局、写作思维导图等写作技能和写作策略介绍一项发明。
3.鼓励学生保持对科学发明探索的兴趣
Some fruits were bought (by him) yesterday.
He bought some fruits yesterday.
He rode the motorbike to his factory last night.
The motorbike was ridden to his factory (by him) last night.
We made the snowman this morning.
The snowman was made by us this morning.
Ask and answer in pairs.
A: What invention is it
B: …
A: Who was it invented by
B: ...
A: When and where was it invented …
·Problem: __________________________
·New invention: _____________________
·What it is used for: ___________________
a special pen
quickly taking notes in class
taking notes in class
Can you think about more details about this pen
What is it made of
What special thing does it have
What does it look like
How can it help you
Think of something that you do not like to do. Then think of an invention that could help you. Make notes.
3a
3
4
1
2
5
who
when
how
...was/were invented by...
...invented ...
in+ 年份
on+月，日，年
1at the same time 2although 3 in addition 4besides5what's more 6as well 7also 8for example9 another example10
because....for the purpose of .....in order to solve/help.....
There be...
color,shape,size
what
why
invention
How to introduce an invention
3b
This special pen was invented by Liu Jie. It has three colors and is used for …
Imagine you are a business person. Write a description of
your new invention. Try to sell the invention to the class.
假如你是一个商人，你有一项新发明。请以A special…为题介绍一下你的新发明，并将它推销给你的同学们。词数80-100。开头已给出，不计入总词数。
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.
时间:The pen was invented
in ...
外形：... was long and round.
用途:write some messages ... open ...
I think pens are going to ...
写作指导
1. 人称: 主要用第三人称
2. 时态: 一般过去时态为主，其它时态为辅；
3. 语态：主要用被动语态
4. 常用句型：
① ... was invented by / in … ② ... is made of / from …
③ ... is used for/to/as...
④ I think … is a very useful invention.
5. 写作思路
首先，使用3b句型介绍发明的产品发明人名称；
其次：根据3a提示，使用句型介绍类型、用途及其制作材料等；
最后：介绍自己的使用感受效果等, 建议同学买一个。
注意：要恰当运用被动语态，检查时态、句子结构等是否正确。
1. I think … is a very useful invention.
我认为……是一项很有用的发明。
2. … was invented by …
……是由…… (某人)发明的
3. … was invented in …
……是在…… (某时间)发明的
4. It is used for … 它被用来……
5. … is made of ………是由……(材料)制成的
常用句型：
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 all 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.
Hi, boys and girls. I have a special invention. This special pen was invented by Liu Jie. It has three colors and is used for taking notes quickly in class. It was invented in 2012. It is made of plastic and steel. It can remember what the teacher said. It can also help write down the main points. I think it’s a useful invention.
Do you like it If you like it, please call me at 13562327969.
范文展示：
从古自今，无数发明走进了我们的生活，例如点灯、电视、电脑、电话、手机、自行车和雨伞等，这些发明给我们的生活带来了诸多便利，提高了我们的生活质量，真是“小发明改变世界”。请以“My favorite invention"为题根据要求完成A、B两项写作任务。
B.请以“My favorite invention"为题，写一篇短文。
要求：1.内容包含A部分的信息，适当发挥，内容完整。
2.语句通顺连贯，无单词拼写及语法错误。
3.书写规范整洁。 4.不少于80词。
A.用完整的句子回答下列问题：
1.What's your favorite invention
2.When was it invented
3.Who was it invented by
4. What is it used for
5.What do you think of the invention
My favorite invention is light bulb.
It was invented in 1854.
It was invented by Thomas Edison.
It is used for seeing in the dark.
I think it's a great /useful/invention.
Beginning
Sb.al always have difficulty in doing sth., so he invented this.
Body
It is made of…
It looks like…
It has…
Not only can it help you…, but also it can help you…
End
Nowadays, it has become so popular in the world and a lot of people like to used it.
体裁：说明文
时态：介绍发明要用一般现在时
人称：第三人称
在介绍该发明的工作原理时，可以使用表示顺序的词first和then来连接，这是使用逻辑纽带的方式进行衔接的一种方法。
convenient helpful useful interesting fascinating creative more easier popualr/important
daily lives日常生活be made of/from 由……制成
by accident 偶然；意外地meet the requirment/need of 满足需求、要 provide /offer提供
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
单词短语储备
开头句：
Among all the modern inventions, I think … is one of the最高级 one. Do you know when was it invented
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.There is no doubt that ...
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.
常用的关联词
1. 开头常用词语：
as far as we know 据我们所知
as is known to all /everybody knows 众所周知It's well known that
at present 目前
first of all 首先
tell the truth 老实说
2. 结尾常用词语：
after all 毕竟in the end 最后
in a word 总而言之
we hope that ... 我们希望 In short 简而言之clearly 显然
In my opinion ,wisely and properly
原因 thanks to, because of, because结果 as a result of, so/therefore, so ... that
承上启下 every coin has two sides任何事物都有两面性 last but not least最后同等重要的是 转折 however, yet, but
补充说明 not only ... but also ..., furthermore/ What’s more/ besides/ in addition/as well, It is said that ...
My favorite invention is light bulb. It was invented in 1854.It was invented by Thomas Edison. it is used for seeing in the dark. I think it's a great /useful/invention.
There are many inventions around us,such as computers,cameras and mobile phones and so on.
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.
And 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.
My favorite invention
计算机在我们的生活、工作中的作用越来越大，你知道计算机的起源与发展吗？请结合计算机的发明时间(1946年）、外形、用途等方面,谈一下它的发展变化，并说明你对未来计算机的畅想。要求：1.意思连贯,语句通顺;词数不少于80。
Computer
____________________________________________________________________________________________________________________________________
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。
计算机
引出话题
介绍发明
畅想未来
... important in our daily life.
时间:The computer was invented
in ...
外形：... was huge.
用途:send some messages ... open ...
I think computers are going to ...
Computer
Computers are becoming more and more important in our daily life. Do you know when the computer was invented The computer was invented in 1946. At that time , it was huge. With the development of science and technology, the computer has grown smaller. Now there are many kinds of computers, such as personal computers and laptops. The computer is a very useful tool in our life.
For example , it can send some messages to foreign friends by e-mail. What’s more , it can share information with others through the World Wide Web. We can also listen to music or play the game on computers. It makes us relax.
It’s hard to imagine what our life would be like without computers. I think computers will be more convenient and they are going to change our life completely in the near future.
【参考范文】
English Composition of Ningyang Guanghe School（Unit 1）
CLASS： GRADE： NAME： SCORE：
微信（Wechat）是腾讯公司（Tencent）于2011年推出的提供通讯服务的应用程序（app）。微信可以用来发送语音短信、视频、图片和文字；分享日常生活；玩游戏等。微信红包、微信支付也非常受欢迎，请你根据要点提示写一篇介绍微信的短文。
要点：1.发明 2.用途 3.评价（利弊）
supplement : Wechat mini program微信小程序
Wechat official account 微信公众号
【写作自评表】
请使用下面的表格完成自评和修改。依据每个问题进行自查，看看结果是“是”还是“否”。如果是“否”，请记录如何修改以完善自已的写作。
问题 是 否 如果为“否”，如何改进
我在短文的第一段是否对微信的发明做了简短的介绍？
我在短文的第二段是否对微信的用途做了清晰的介绍？
我在介绍微信的用途时是否有清晰的层次？
我在短文的末尾是否做了恰当的评价？
结合以上问题，我的短文结构是否清晰？
我的短文是否运用了恰当的句型和丰富的词语？
我的短文在拼写、语法和标点方面是否都正确？
【写作互评表】
请一位同伴阅读你写的短文并完成下面的表格。之后，请你根据同伴的反馈进一步修改和完善你的短文。
作文评价量化表
Items评价项目Standard Scores标准分值 Score得 分
Format 格式 1 Person人称 2
Tense时态 2
Content内容：1.结构 2.句型 3.要点明确有依据 8
Hand-writing书写 2
语法或单词拼写错误扣分（每处扣1分）
Total总分 25
WeChat is one of the most useful apps in our daily lives. It is widely used around the world. Here is an introduction to WeChat.
WeChat was invented by Tencent in 2011. It is a popular app which is used to communicate with（和…交流 )others. For example, it can be used to send voice messages（语音信息 ）, videos （视频）, pictures and words . Another example is that we can also share our daily lives through WeChat . Besides （而且）, playing games on Wechat is really a good way to relax. Also, people prefer to send WeChat red packets among (在…中) friends or family members.
Another thing is that WeChat pay makes our life much easier. What a convenient app !
However, every coin has two sides (事物都有两面性).Some students spend too much time chatting with others through WeChat. So they can't pay more attention to(更多地注意) their study. What's more, using WeChat too much may be harmful/bad to(对…有害 )eyes . Last but not least(最后但同样重要的是）, our private information may be stolen by bad people and used to do bad things. In my opinion（依我之见）, we are supposed to use it wisely （理性地）and properly（恰当地）.
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. 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, nearly, website, all of sudden
Complete the passage with the correct forms of the words in the box.
Self Check
invent
nearly
all of a sudden
doubt
websites
mention
My watch was stolen (by someone).
Five eggs were used 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).
Self Check
3. Find out information about an invention you would like to know more about and write sentences below.
Invention:___________
When: ______________
Who: _______________
Purpose:_____________
switch plug
(断路插头)
2012，
富超穎 (中国)
scooter carriage
(滑板婴儿车)
2007年
Valentin Vodev (奥地利)
Self Check
如何介绍某项发明
Para 1
引出话题
... important in our daily life.
Para 2
介绍发明
时间：It was invented in ...
材料：It’s made of....
外形：... is/was small/huge/light ...
用途：... is/was used for/to ...
Para 3
谈谈感受
I think/hope it ...
Summary
1. The first paper __________ (make) in China in 105 AD.
2. For over 500 years the art of making paper __________ (limit) to China.
3. In 610, papermaking ______________ (introduce) into Japan.
4. Kites ___________ (know) in China about 3,000 years ago.
5. Wheelbarrows ____________ (invent) in the Han Dynasty.
6. Gunpowder _______________ (discover) by the Chinese hundreds of years ago.
7. Soccer _____________ (develop) in England in the 12th century.
was made
was limited
was introduced
were known
were invented
was discovered
was developed
I、Fill in the blanks with the correct form of the given verbs.
Ⅱ.用所给词的适当形式填空。
1. Now computers are widely used in our ______ (day) lives.
2. He mentioned _________ (hear) from her often.
3.The soup is very _______ (salt) because my mother put lots of _____ (salt) on it.
4. Since then, the ___________ ( popular ) of basketball has risen quickly.
5. I have worked here for _______(near) two years.
daily
hearing
salty
salt
popularity
nearly
1. Review the words in this unit.2. Write a passage to introduce an invention in daily life
假如你发明的“飞行单车”在学校科技节中获奖，被推荐参加一个国际青少年科技展览。请用英语介绍你的发明， 内容包括下图1-4项。
注意：
（1）参考词汇：轮子：wheel 太阳能：solar power
（2）词数80左右（文章的开头已给出，不计入词数）。
（3）不得透露学校、姓名等任何个人信息。
My invention is a flying bike. ____________________________________________
____________________________________________________________________________________________________________________________________________________________________________________________________________
Homework