Unit 3 The world of Science Using language 语法讲解课件(共21张PPT)-2025-2026学年外研版（2019）必修第三册

(共21张PPT)
新外研版 Book 3
Unit 3 Present Perfect Passive
Grammar in context:How Innovation
Shapes Our World
Learning objectives
1.语言能力
Master the structure :have/has been+V-ed;Convert active sentences to passive sentences.
2.思维品质
View the development of technology dialectically.
3.文化意识
Discuss China’s contributions(e.g high speed railways,mobile payment)using passive voice.
01
Lead-in:Describe the pitctures.
1.Medical robots ______________(use) in Chinese hospitals since 2020.
2.Solar energy ________________(adopt) in rural schools.
have been used
has been adopted
02
Basic structure
Compare the different verb forms.
Active（主动）
Passive(被动)
5G has been developed (by scientists).
主语+ have/has done
主语+have/has been done+by施动者
Scientists have developed 5G
Basic
structure
03
Presentation
Dr Richard Fairhurst has written a world-famous book The New Age of Invention.
宾语
主语
谓语
1.把主动句的宾语变为被动句的主语
2.把主动句的谓语变为被动语态形式
3.把主动句的主语变为by的宾语，放在被动句的谓语之后，by短语可以省略
A world-famous book The New age of Invention
has been written
by Dr
Change the present perfect active into the present perfect passive.
Richard Fairhurst.
Many things in our lives have already been affected.
Have a try: rewrite the underlined parts using the present perfect passive.
（P38）
Within the next 80 years, our lives may be changed beyond recognition by 3D printing. It has already affected many things in our lives, right down to the food we eat. For instance, 3D - printed hamburgers________________ (serve) to customers in some restaurants in London. But perhaps the most significant success that __________________ (achieve)to date is in medicine. human body parts, including a beating heart __________________(make)with 3D printing technology. And it is not just humans who are benefiting – in Brazil, a new 3D - printed shell __________________( give) to a turtle injured in a forest fire!
02
Practice 1（p38）
have been served
has been achieved
have been made
has been given
时间状语
Virtual reality has been used by him since last month.
②表示一个被动的动作或状态从过去开始一直持续到现在，并可能继续持续下去
since+时间点
for+时间段
Basic Usages
04
04
表示被动的动作在说话之前已经完成，强调过去的动作对现在造成的影响或产生的结果
时间状语
already
yet
recently / lately
so far
by now
up to/till now
Basic Usages
“China speed” has been given new meanings in the past decade.
in the last/past+时间段
在过去的十年间，“中国速度”已经被赋予了新的含义。
practice 3
In China,high- speed railway networks________________(build) across the country in the past decade..
Mobile payment systems_________________(apply)widely since 2015,_________(make)cashless societies possible.
has been built
have been appled
Basic Usages
04
making
与一般过去时的被动语态was/were done的区别
难点突破
timeline
past
now
一般过去时
（时间点）
现在完成时（时间段）
Basic Usages
04
③
难点突破
②与一般过去时的被动语态的区别
The first phone was released in 2007.
一般过去时的被动语态强调动作发生在过去某个特定时间点，
所表示的动作或状态与现在的情况没有联系。
现在完成时的被动语态强调过去动作造成的影响或状态持续到现在，即现在公园仍向公众开放。
Smartphones have been integrated into daily life since 2007,changing how we communicate.
Basic Usages
04
③
基本用法
难点突破
1. Bike sharing systems___________(set up) in our city in 2018. Since then,
carbon emissions__________________(reduce) by 15%.
2.TikTok ___________________ (download) over 2 billion times last year globally,but its users____________________(criticize) recently for data privacy issues.
与一般过去时的被动语态的区别
practice 4
was set up
has been reduced
Basic Usages
04
was downloaded
have been criticized
现在完成时的
被动语态
Basic Structure
Basic Usages
summary
have/has been done
表示被动的动作在说话之前已经完成，强调过去的动作对现在造成的影响或产生的结果
②表示一个被动的动作或状态从过去开始一直持续到现在，并可能继续持续下去
Basic Structure
Time
Adverbials
already
yet
recently / lately
so far
by now
up to/till now
in the last/past+时间段
since+时间点
for+时间段
③与一般过去时被动语态的区别：一般过去时的被动语态强调动作发生在过去某个特定时间点，与现在无关。现在完成时的被动语态强调过去动作造成的影响或状态持续到现在.
04
Practice 5: Fill in blanks with the correct forms.
1.The first smartphone_________________(introduce)by Apple in 2007, changing communication forever.
2.Since its launch,online shopping _________________(adopt)by millions of people because of its convenience.
3.The electric light bulb_____________(invent)by Edison in the 19th century.
4.Many traditional markets ___________________ (replace) by e-commerce platforms in the last 10 years.
was introduced
has been adopted
have been replaced
was invented
04
Practice 5: Fill in blanks with the correct forms.
5.Bike sharing systems___________(set up)in Beijing in 2016,and so far they____________________(expand) to 200 cities.
6.The data about climate change_____________(collect)last year.
7.The AI translation app____________________(download)over 5 million times recently.
8.Smart home techonology_________________(create)to simplify life,and it ___________________(apply)in our daily life up to now.
were set up
was collected
has been downloaded
was created
have been expanded
has been applied
05
Discussion
Talk about the change of your life caused by some inventions,using present perfect passive where appropriate.
Today,many new inventions , such as ... has been created , making...
06
Debate
“Technology has improved life” vs “Technology has caused problems”.
Each side has to use at least 3 sentences of present perfect passive.
e g. Privacy has been threatened by AI apps.
Student A : Hi everyone! Let me introduce my household robot. _______________________________________(这个机器人在外表上更像是一个人,而不是一台机器)!
Student B : Really What can it do
Student C : Yes, tell us more!
Student A: ___________________________________________（提示：做家务，陪同购物，下棋，照顾老人小孩等）!
Student D : That’s cool! Can it help in emergencies
Student A: Of course! ______________________________________________（如果一位老人突然病了,它可以叫医生帮忙）
Student B: Wow, I want one too!
Activity7 Evaluation
to know the structure and usage of the present perfect passive
to change sentences from the present perfect active into the present perfect passive
to use the present perfect passive to talk about the change of life.
Activity7 Evaluation
I have learnt
Result
Result:Excellent! Good! Not bad!
Student A : Hi everyone! Let me introduce my household robot. _______________________________________(这个机器人在外表上更像是一个人,而不是一台机器)!
Student B : Really What can it do
Student C : Yes, tell us more!
Student A: ___________________________________________（提示：做家务，陪同购物，下棋，照顾老人小孩等）!
Student D : That’s cool! Can it help in emergencies
Student A: Of course! ______________________________________________（如果一位老人突然病了,它可以叫医生帮忙）
Student B: Wow, I want one too!
1. Basic homework： Draw a mind-map to sum up the present perfect passive.
2. Practical homework ：Write a short passage to describe the change of your hometown,using the present perfect passive.
3. Expansive homework： Interview the elders and record changes in life tools with passive sentences.
Student A : Hi everyone! Let me introduce my household robot. _______________________________________(这个机器人在外表上更像是一个人,而不是一台机器)!
Student B : Really What can it do
Student C : Yes, tell us more!
Student A: ___________________________________________（提示：做家务，陪同购物，下棋，照顾老人小孩等）!
Student D : That’s cool! Can it help in emergencies
Student A: Of course! ______________________________________________（如果一位老人突然病了,它可以叫医生帮忙）
Student B: Wow, I want one too!
THANKS