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(共15张PPT)
UNIT 5
Power of Ideas
3D printing
1. What is this
2. Do you know how it works
3. What can it be used for
It’s a 3D printer.
Tick the things that you think a 3D printer can make. You can add more.
medicine
tables
chairs
hearts
computers
arms and legs
shoes
food
toys
houses
___________________
？
？
？
car parts, tools, models, pots and so on.
A 3D printer can make hearts.
A 3D printer can also make ... by different materials.
flowers and the vase
a house
wig(假发)
a bag
During the break, Han Lin shared his experience with Ella.
Listen to the conversation and answer the questions.
1. Where did Han Lin go last weekend
2. Why was the 3D printer Han Lin’s favourite invention
He went to the International Exhibition of Inventions.
Because almost everything under the sun can be made by it.
To the International Exhibition of Inventions.
During the break, Han Lin shared his experience with Ella.
Complete the sentences with the correct forms of the words in the box. Then listen again and check your answers.
read, design, produce, create, send
First, the object is _______ on the computer.
Then, a file is _______ by the computer.
And the file is _______ to the 3D printer.
Next, the file is _______ by the 3D printer.
Finally, the object is _______ by building up plastic.
1
2
3
4
5
designed
created
sent
read
produced
在描述过程时，使用顺序词，可以让描述条理清晰，一目了然。
全世界
like… the most 最喜欢……
几乎所有东西
各种各样的日常用品
在医学领域
把……送到……
Pay attention to the expressions.
被动语态：
由“助动词be十及物动词过去分词”构成。助动词be有人称、数和时态的变化。
1. And the file is sent to the 3D printer.
send+宾语+ to +地点/人：把…寄到/送到…（主动语态)
主语+be sent to+地点：...被送到...（被动语态)
e.g. Please send the letter to my friend.
I will send the photo to you.
The boy is sent to hospital.
文件被发送到 3D 打印机。
2. Finally, the object is produced by building up plastic.
最后，这个物品是通过塑料逐层堆叠打印而成的。
produce v. 生产
e.g. This factory produces bikes.
Paper is produced from wood.
product n. 产品
e.g. The 3D printer can make many products.
production n. 生产；产量
e.g. The factory increased its production.
【语境应用】用produce的适当形式填空。
The factory _________ many good ________.
Its __________ is very high.
produces
production
products
build up 堆积；逐步建成；拼接成型
e.g. The model is made by building up paper.
这个模型是通过堆叠纸张做成的。
They build up small stones to make a wall.
他们堆砌小石头砌成一堵墙。

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