Unit 6 When was it invented SectionB 3a-Self Check课件(共33张PPT) 人教版九年级英语全一册

(共33张PPT)
3a-Self Check
老师：XXX
班级：XXX
Unit 6
When was it invented
Contents
Review
1
Pre-writing
2
While-writing
3
Post-writing
4
Summary
5
Homework
6
Language goals
语言
能力
学习
能力
思维
品质
文化
意识
培养学生热爱科学、
勇于探索的精神。
1.掌握常用词汇及句型: nearly,decide on, come up with 等;
2.用英语介绍某一项发明。
通过了解世界上一些对人类有着重大意义的发明的相关信息，开阔学生的眼界，培养学生的创造精神。
1.熟练掌握被动语态用法；
2.学会使用被动语态介绍某项发明。
1
2
3
4
0 1 Review
What inventions have we learned
Review
How to introduce them
When was it invented
Who was it invented by
It was invented in/by…
What inventions have we learned
Review
How to introduce them
What is it/are they used for
Why are they invented by
They are used for…
What inventions have we learned
Review
How to introduce them
Who was it invented by
How was it invented
It was invented by ...
One day,...
What are the influences
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
......
0 2 Pre-writing
by listening music.
by doing exercises.
Let’s talk.
Some interesting inventions.
Do you think they are useful
What have you invented
self-closing
door
by listening music.
by doing exercises.
Let’s talk.
Think of something that you do not like to do.
Then think of an invention that could help you. Make notes.
3a
·Problem: __________________________________________
·New invention: ___________________________________
·What it is used for: ________________________________
a special pen
quickly taking notes in class
taking notes in class
Could you tell me more about it
by listening music.
by doing exercises.
Let’s talk.
Think of something that you do not like to do.
Then think of an invention that could help you. Make notes.
3a
Who and why was it invented
What is it used for
How does it work
What do you think of the invention
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
How to introduce an invention
开篇点题
详尽描述
表达观点
How to
introduce an invention
Beginning
Ending
Body
What
Show opinion
What,How
Analysis
How to introduce an invention
开篇点题
详尽描述
表达观点
How to
introduce an invention
Analysis
This is ...
...was invented by/in...
It is made of…/It looks like…
It can not only … but also …
It was used to/for …
Without doubt I like … because …
0 3 While-writing
by listening music.
by doing exercises.
Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.
3a
While-writing
This special pen was invented by Liu Jie. It has three colors and is used for …
Beginning
Body
Ending
I’d like to introduce…
/This is…
Don’t you… If so, please…
It was invented… Because it…
It is used for… First… then…
Show
This special pen was invented by Liu Jie. He invent it because he want to take notes quickly in class.
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 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
Sample writing
Beginning
Ending
Body
实
战
演
练
发明改变世界，不少中学生都梦想成为发明家。某英语报社正组织题为“My invention: ________”的征文活动，请你根据下面的要点提示，写一篇80词左右的英语短文参赛。
要点：1. 你梦想的发明是什么
2. 这项发明能帮你或他人解决什么问题
3. 你为什么想发明这个东西
要求：1.文中不得出现自己的真实姓名。
2.开头已为你写出，不计入总词数。
While-writing
While-writing
I hope to invent a kind of super shoes.
Many of us may have to throw away our shoes when they are too small for our feet. This is a great waste. And lost shoes are also bad for the environment. If I could invent a kind of super shoes, there would be no such waste.
This kind of shoes is made of a special material, which can grow with your feet and always fit your feet. You don’t have to worry about your shoes being too small or too tight. In addition, if the shoes are dirty, they will start the automatic cleaning function between 12:00 a.m. and 3:00 a.m., and it will automatically dry. So your shoes always look clean. If you walk too much, there will be a massage function at the bottom of the shoes to help you relax your feet.
These shoes can not only help us save some time for cleaning and massage, but also are environmentally friendly. It is also good for us to protect the environment. The most important thing is that the shoes are cheap.
My invention: Super Shoes
Beginning
Ending
Body
① 题材：本文是一篇材料作文，写自己的一项发明；
② 时态：时态为“一般现在时”；
③ 提示：根据所给提示完成写作，不能遗漏信息，包括想要发明的东西、能解决的问题以及发明的原因等。
[写作步骤]
第一步，介绍想要发明的是什么； 第二步，具体介绍想要发明的原因；
第三步，介绍发明物能解决的问题。 第四步， 总结发明物的优点。
[亮点词汇]
① throw away扔掉 ② be bad for对…有害 ③ not only…but also 不但…而且…
[高分句型]
① If you walk too much, there will be a massage function at the bottom of the shoes to help you relax your feet.（if引导的条件状语从句）
② This kind of shoes is made of a special material, which can grow with your feet and always fit your feet.（which引导的非限制性定语从句）
While-writing
详解
0 4 Post-writing
01
02
03
04
05
Peer
-editing
Good Structure
Correct grammar/spelling
Good sentences
Linking words
Beautiful writing
Exchange your articles, help each other correct them.
Post-writing
Play a game
4位同学扮演“推销商”上讲台向同学们
“推销”自己的发明，台下的每位同学都举手投票，得票最多的“推销商”获胜。
（注意：在“推销”发明时请全程使用英语。）
Post-writing
谁的发明最畅销？
Four students act as "salesman" on the platform to "sell" their invention.The audience of each student raise their hands to vote, and the "salesperson" with the most votes will win.
The invention that can be accepted is useful and meaningful.
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 Check
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
1. Someone stole my watch.
My watch was stolen (by someone)
2. They used five eggs to make this big cake.
Five eggs were used (by them) to make this big cake
3. When did they invent the personal computer
When was the personal computer invented
4. They asked us not to run in the hallway.
We were asked not to run in the hallway (by them)
5. Someone took the video back to the store.
The video was taken back to the store (by someone)
Self Check
Rewrite these sentences using the passive voice.
2
0 5 Summary
How to introduce an invention
开篇点题
详尽描述
表达观点
How to
introduce an invention
Beginning
Ending
Body
What
Show opinion
What,How
How to introduce an invention
开篇点题
详尽描述
表达观点
How to
introduce an invention
....was invented by/in...
Because...
It is made of…/It looks like…
It can not only … but also …
It was used to/for …
Without doubt I like … because …
Summary
0 6 Homework
Level B：
Recite the important sentences in the passage.
Level A：
Write a short passage to introduce the invention according to the information in Self Check 3.
Homework
老师：XXX
班级：XXX
Small invention
would change the world.