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(共20张PPT)
Unit 4 Inventions-Writing
主题范畴：
人与社会
主题群：
科学与技术
子主题：
科学技术与工程，人类发明与创新
Key question
What makes an invention great
master the key words and phrases related to inventions, such as "solar power", "top speed", "instead of", etc.
draw a mind map before writing about my idea for a new invention;
write an article about a new invention with what I have learnt in this unit.
Learning objectives 学习目标
At the end of the class, students will be able to:
Lead in
Let’s play a guessing game. Read the description and guess what the invention is.
It usually has a rectangular shape. Some are white, and some may have other colors.
People can feel comfortable in different seasons with it.
It can make the room cool in summer and warm in winter.
air conditioner
Lead in
Let’s play a guessing game. Read the description and guess what the invention is.
It is a tall and large appliance, usually with a rectangular shape.
It can be white, silver or other colors.
It can keep food fresh for a long time. People can store a lot of food in it and enjoy fresh food whenever they want.
fridge
Lead in
It is often a large, box - like appliance.
It can be white or silver.
It can clean clothes automatically. People don't need to wash clothes by hand anymore with it.
washing machine
Let’s play a guessing game. Read the description and guess what the invention is.
Lead in
It is a small, flat device that can fit in your pocket.
It has a screen on the front and buttons or a touch - screen interface.
It can be used for making calls, sending messages, surfing the Internet, taking photos and many other things.
smartphone
Let’s play a guessing game. Read the description and guess what the invention is.
Lead in
It is usually round in shape.
It is often made of materials like rubber, metal, or plastic.
It makes moving heavy objects much easier and saves a lot of effort.
People use it on various things—like cars, bicycles, carts, and even office chairs.
wheel
Let’s play a guessing game. Read the description and guess what the invention is.
Pre-writing
After reading the descriptions, can you summarize what can we write if we want to introduce an invention
shape/appearance
material
benefits
usage
Pre-writing
Writing an article about a new invention.
Ask questions about Wang Yao’s invention—A flying car. Collect ideas for the mind map below.
My invention—
A flying car
What it is
What it can do
Main features
Benefits of my invention
What it looks like
Pre-writing
Read Wang Yao’s article to find out how she organized her ideas.
What it is
What it can do
Main features
Benefits of my invention
What it looks like
①
②
③
④
While-writing
Read Wang Yao’s article and complete the mind map with key words.
Read for details
a flying car
fast, convenient, green
four wheels
use solar power
travel at a top speed of 300 km/h
be controlled by voice
two wings
avoid traffic jam
make driving a more exciting experience
fly anywhere they like and enjoy the view at the same time
What it is and its main features
What it looks like
What it can do
Its main benefits
A flying car
run on land
fly in the air
While-writing
Read for language
Underline the sentences that describe the car’s features. How does the writer make them clear and convincing
topic sentence
While-writing
Compare the following sentences and decide which is better.
Read for language
Sentence 1: It travels a long way in a short time.
Sentence 2: It has a top speed of 300 km/h. You can travel farther distances in less time.
Sentence 3: Instead of petrol, the car uses solar power, so it will not pollute the air.
Sentence 4: The flying car doesn’t use petrol. It uses solar power. It will not pollute the air.
Tip 1: Use numbers and comparative language to make sentences clearer and more persuasive.
Tip 2: Use linking words to make sentences more coherent.
While-writing
Plan and write
Step 1 Draw a mind map for your own invention.
Step 2 Write about your invention. You can also draw a picture of it.
Post-writing
写作思路：
Part 1: What it is & What it does
①　My invention is ________ (你的发明名称). It is ________, ________ and ________.
(使用三个形容词概括发明的特点，如：useful, smart, green, amazing, cool 等)
②　The ________ (发明名称) has ________ (描述其主要部件，如：a screen, a sensor, two buttons, four wheels). It can ________ and ________. (列出它的主要功能，功能一和功能二)
Part 2: Main Features
It has a top speed of ________ (描述速度/效率). You can ________ (这样做带来的好处). The ________ (发明名称) can be controlled by ________ (控制方式，如：voice, a remote control, a smartphone app). If you ________ (给出一个具体的指令示例), it will ________ (描述发生的反应). Then you can ________ (描述用户能做的事情). You will feel as ________ as a ________ (使用一个比喻，如：free as a bird, happy as a king). Instead of ________ (传统能源，如：petrol, electricity), it uses ________ (新能源，如：solar power, air), so it will not pollute the environment.
Part 3: Benefit of the invention
As we know, ________ (描述一个现实存在的问题，如,traffic is getting heavier, people have less time to read). My invention
will help people _______ (解决什么问题，如,avoid traffic jams). It will make ________ (相关活动) a more ________ (形容词，
如：exciting, enjoyable, relaxing) experience too. People can _____ (展望美好的使用场景) and enjoy ______ at the same time.
实用表达：
外形： 特点： 能源
圆的round 方的square 大的huge 小的small silver 银 medal 金 iron铁 wood 木头 方便的convenient 特别的special 环保的green 创新的creative/ innovative 舒服的comfortable 现代的modern 有用的useful 珍贵的valuable 流行的popular 轻的 light solar power太阳能
wind energy风能
air空气能
tidal energy潮汐能
petrol汽油
electricity 电能
ü 描述外形：
It looks like _________ and has __________.
ü 描述功能：
It is able to _________.
It has the ability of __________.
ü 使用什么能源
Instead of _________, it uses ________ so it’ s greener / more eco-friendly.
ü 描述现状，提出优势：
As we know, the problem of _______ is getting serious. My invention will help ____________________.
Write about an invention
Expressions and sentence patterns
Summary
Evaluation
What it is
What it looks like
What it can do
Main features
Benefits of my invention
Contents, language, structure, writing
Contents
My invention: A pair of special shoes
假设你们学校要开展一个名为“小小发明家”的活动。你发明了一双特别的鞋，所以想参加这次活动。根据以下提示给大家介绍你的发明。要求：80词左右，可适当发挥。
1．看起来像普通的鞋，但是鞋的材料很特别，鞋底里有电池；
2. 冷的时候，可以使人们感觉到温暖，热的时候，可以使人们感觉到凉爽；
3．你对该项发明的看法。
写作步骤
◆审题
（一）人称：用第三人称来介绍自己的发明；
（二）时态：介绍发明，以一般现在时为主；
（三）书写正文：按照提示要点写作，可适当补充内容，注意文章的自然衔接；
（四）检查全文：时态、人称、要点。
◆联想：写作本篇作文可能用到的词汇、短语：normal, material, battery, sole(鞋底)
Homework
Thank you for your listening

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