Unit 6 Earth first Developing ideas 课件(共21张PPT)-2025-2026学年外研版（2019）必修二
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| 名称 | Unit 6 Earth first Developing ideas 课件(共21张PPT)-2025-2026学年外研版（2019）必修二 |  | |
| 格式 | pptx | ||
| 文件大小 | 49.5MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2025-06-18 15:58:17 | ||
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文档简介
(共21张PPT)
What’s
really green
B2U6 Earth first
Lead-in
Look at the questions about “green living” and tick your answers.
You can’t give a definite answer because different things are possible indifferent situations.
Pre-reading
What’s the meaning of “green” in the title
environmentally friendly
What’s the function of the sentences in red
subheadings/subtitles
Paper shopping bags are better than plastic ones.
When you turn off a device, it stops using power.
Eating local food is good for the environment.
It’s better to take a shower than a bath.
What’s the main idea of the passage
It discusses some common __________ which have been shown to be only _________ or even ______________.
green truth
half true
completely false
While-reading
Read for the structure
Most of us are aware that we must take care of the environment, and the majority of us take steps to save energy and reduce waste and pollution. But recently, some “green truths” have been shown to be only half true, or even completely false. Here are some common ones. Which are really green
Introduction
(para1)
Body
(para2-5)
Conclusion
(para6)
While-reading
Read para2-5 for the details
Read the four subheadings in the passage and decide if they are true or false.
Why do you think these common senses are not true (causes)
According to the reasons, what conclusions can you draw (effects)
What can we do to solve the problem (measures)
Paper shopping bags are better than plastic ones.
When you turn off a device, it stops using power.
Eating local food is good for the environment.
It’s better to take a shower than a bath.
Body (para2-5)
Group work
Read and fill the blanks
Paper shopping bags are better than plastic ones.
Making a paper bag uses more energy and water.
It also produces more greenhouse gases.
Paper bags are not good for the environment.
Take a reusable bag when going shopping
When you turn off a device, it stops using power.
Group work
Read and fill the blanks
Devices turned “off ” go into stand-by mode and still use power.
Electricity continues to leak from the device.
Turning off a device won’t stop it from using power.
Remove the plug from its power supply.
Eating local food is good for the environment.
Group work
Read and fill the blanks
It is the production of food, not its transport, that uses most of the energy and produces most of the greenhouse gases.
Eating local food isn’t always better for the environment.
Eat seasonal local food.
It depends
It’s better to take a shower than a bath.
Group work
Read and fill the blanks
If you spend more than eight minutes in a shower, you’ll use as much water as in a bath.
It’s not always better to take a shower than a bath.
Keep your shower time as short as possible.
It depends
Post-reading
Read more
Are you aware of any other “green truths” that are not true Share them with the class.
watch the video and answer:
What is “greenwashing”
How to avoid
Post-reading
Think and share
How “green” are you Share your “green actions” with the class.
What can you do to become “greener”
Reuse
Reduce
Recycle
what you need
what you have/consume
what you can’t reduce or reuse
Homework
Give a talk about one of the “green truths” in the passage.
1 Use these questions to help plan your talk.
Which “green truth” are you going to talk about
Why do people believe it is “green”
Why is it not completely true
What can you do to become “greener”
2 Organise your talk following the steps below.
Start your talk by stating the topic.
Describe your chosen “green truth” in more detail.
Explain why it is not completely “green”.
End your talk by encouraging your audience to become “greener”.
3 Give your talk to the class.
Useful expressions:
Some people think that...
However, it is (not completely) true because...
Therefore, we should/had better/are supposed to...
Languge
Points
②缺乏经验的 a green hand 生手
③嫉妒的；羡慕的 a green eye 眼红
④青春的；生机勃勃的 the green years 风华正茂
①环保的；无污染的；天然的 green movement环保运动
⑥草木青葱的；绿油油的 a green wood 一片青翠的树林
⑦脸色发青的 green around the gills 面如土色
④新鲜的；未成熟的；嫩的 green bananas 青香蕉
⑤金钱 green power 金钱的力量； green back 美钞
green
1. Most of us are aware that we must take care of the environment, and the majority of us take steps to save energy and reduce waste and pollution.
我们大部分人都意识到要保护环境，也采取了各种行动节约能源，减少浪费和污染。
① a majority decision (= one that is decided by what most people want)
② In the nursing profession, women are in a/the majority.
构成多数；占多数
The majority of: 大部分；大多数
反义词：minority n. 少数人；少数群体
① We must take steps to end the war.
② We are taking steps to prevent pollution.
③ We must take steps to prevent this tragedy from happening again.
take steps to do sth
我们正在采取措施防止污染。
我们必须采取措施阻止这类悲剧再次发生。
我们必须采取措施来结束这场战争。
① The majority was / were in favour of(赞同) the proposal.
② Who says the majority is always able to make the minority agree with their idea
3) 当majority后不接of短语时，如强调整体，谓语动词用单数；如强调众多个体，谓语动词用复数。
大多数人赞成这个提议。
谁说多数人总能使少数人同意他们的想法？
①The majority of students find it hard to learn German.
② The majority of people is more than half of the population.
③The majority of people interviewed prefer TV to radio.
2) majority常与of连用，后接复数可数名词。
a. 当“ majority of+复数名词”作主语时，谓语动词一般用复数。
b. 当“majority of +集体名词”作主语时，谓语动词用单、复数均可。
大部分学生认为学德语很难。
大部分人指的是人口的一半以上。
大多数接受采访的人都喜欢看电视多于听收音机。
2. It takes hundreds of years for plastic to break down, but much less time for paper.
塑料需要数百年才能分解，而纸的降解时间要短的多。
① Food is broken down in the stomach.
② Bacteria(细菌) break down the animal waste to form methane gas(沼气).
to make a substance separate into parts or change into a different form in a chemical process 使分解
食物在胃里分解。
细菌使动物粪便分解形成沼气。
break down
① On my way to the station my car broke down.
② Her health broke down under the pressure of work.
③ He broke down and wept when he heard the news.
情不自禁地哭起来
(机器等) 出故障
被搞垮；垮掉
本句含有句型：It takes （sb.）some time/effort + to do sth.”。其中，“it”是形式主语，真正的主语是动词不定式“to do sth.”。
It takes him half an hour to get to work by bus.
他乘公交车上班需要半个小时。
3. When we turn off a device, such as television, it goes into stand-by mode.
当我们关掉电视等电器时，它会进入待机状态。
① Turn the TV off now.
② Don't forget to turn off the lights when you leave.
③ The light is a bit too harsh (刺眼的). You can turn it off.
灯光有点太刺眼了。你可以把灯关掉。
现在把电视机关掉。
离开时别忘了关灯。
to stop the flow of electricity, gas, water, etc. by moving a switch, button, etc.
关掉，截断（电流、煤气、水等）
turn off
an object or a piece of equipment that has been designed to do a particular job
装置；仪器；器具；设备
device
① a water-saving device
② electrical labour-saving devices around the home
③ Rescuers used a special device for finding people trapped(使陷入困境) in collapsed(倒塌的) buildings.
节水装置
节省劳力的各种家用电器
救援者使用特殊设备来寻找被困在倒塌建筑物下面的人。
①It’s common sense to dress more warmly then it gets cold.
②He lacked any of the practical common sense essential in management.
4. It seems like common sense…
这似乎已是人们常识性的认识……
天冷了要穿得暖一点儿，这是常识。
管理方面基本的实用常识他一点也不懂。
the ability to think about things in a practical way and make sensible decisions 常识
common sense
make sense 有道理；有意义；讲得通:
This sentence doesn’t make sense. 这个句子不通。
a sense of... 一种...的感觉
I felt a sense of pride and achievement as I stepped onto the podium.
当我走上领奖台时，我感到一种自豪和成就感。
5. It is the production of food, not its transport, that uses most of the energy and produces most of the greenhouse gases.
强调句: It is/was +被强调部分+that/who+其他成分。
构成强调句的it本身没有实际意义；强调句中的连接词一般只用that或who，即使在强调时间状语和地点状语时也是如此，that或who不可省略；可用于强调句中的时态通常只有两种，即一般现在时和一般过去时。
强调句型的疑问结构：一般疑问句：Is/Was it that …
特殊疑问句：特殊疑问词+is/was it that …
It was my father that/who met with an old friend of his in the street yesterday.
Was it her that you were talking about
Where was it that you saw the man
See You!
What’s
really green
B2U6 Earth first
Lead-in
Look at the questions about “green living” and tick your answers.
You can’t give a definite answer because different things are possible indifferent situations.
Pre-reading
What’s the meaning of “green” in the title
environmentally friendly
What’s the function of the sentences in red
subheadings/subtitles
Paper shopping bags are better than plastic ones.
When you turn off a device, it stops using power.
Eating local food is good for the environment.
It’s better to take a shower than a bath.
What’s the main idea of the passage
It discusses some common __________ which have been shown to be only _________ or even ______________.
green truth
half true
completely false
While-reading
Read for the structure
Most of us are aware that we must take care of the environment, and the majority of us take steps to save energy and reduce waste and pollution. But recently, some “green truths” have been shown to be only half true, or even completely false. Here are some common ones. Which are really green
Introduction
(para1)
Body
(para2-5)
Conclusion
(para6)
While-reading
Read para2-5 for the details
Read the four subheadings in the passage and decide if they are true or false.
Why do you think these common senses are not true (causes)
According to the reasons, what conclusions can you draw (effects)
What can we do to solve the problem (measures)
Paper shopping bags are better than plastic ones.
When you turn off a device, it stops using power.
Eating local food is good for the environment.
It’s better to take a shower than a bath.
Body (para2-5)
Group work
Read and fill the blanks
Paper shopping bags are better than plastic ones.
Making a paper bag uses more energy and water.
It also produces more greenhouse gases.
Paper bags are not good for the environment.
Take a reusable bag when going shopping
When you turn off a device, it stops using power.
Group work
Read and fill the blanks
Devices turned “off ” go into stand-by mode and still use power.
Electricity continues to leak from the device.
Turning off a device won’t stop it from using power.
Remove the plug from its power supply.
Eating local food is good for the environment.
Group work
Read and fill the blanks
It is the production of food, not its transport, that uses most of the energy and produces most of the greenhouse gases.
Eating local food isn’t always better for the environment.
Eat seasonal local food.
It depends
It’s better to take a shower than a bath.
Group work
Read and fill the blanks
If you spend more than eight minutes in a shower, you’ll use as much water as in a bath.
It’s not always better to take a shower than a bath.
Keep your shower time as short as possible.
It depends
Post-reading
Read more
Are you aware of any other “green truths” that are not true Share them with the class.
watch the video and answer:
What is “greenwashing”
How to avoid
Post-reading
Think and share
How “green” are you Share your “green actions” with the class.
What can you do to become “greener”
Reuse
Reduce
Recycle
what you need
what you have/consume
what you can’t reduce or reuse
Homework
Give a talk about one of the “green truths” in the passage.
1 Use these questions to help plan your talk.
Which “green truth” are you going to talk about
Why do people believe it is “green”
Why is it not completely true
What can you do to become “greener”
2 Organise your talk following the steps below.
Start your talk by stating the topic.
Describe your chosen “green truth” in more detail.
Explain why it is not completely “green”.
End your talk by encouraging your audience to become “greener”.
3 Give your talk to the class.
Useful expressions:
Some people think that...
However, it is (not completely) true because...
Therefore, we should/had better/are supposed to...
Languge
Points
②缺乏经验的 a green hand 生手
③嫉妒的；羡慕的 a green eye 眼红
④青春的；生机勃勃的 the green years 风华正茂
①环保的；无污染的；天然的 green movement环保运动
⑥草木青葱的；绿油油的 a green wood 一片青翠的树林
⑦脸色发青的 green around the gills 面如土色
④新鲜的；未成熟的；嫩的 green bananas 青香蕉
⑤金钱 green power 金钱的力量； green back 美钞
green
1. Most of us are aware that we must take care of the environment, and the majority of us take steps to save energy and reduce waste and pollution.
我们大部分人都意识到要保护环境，也采取了各种行动节约能源，减少浪费和污染。
① a majority decision (= one that is decided by what most people want)
② In the nursing profession, women are in a/the majority.
构成多数；占多数
The majority of: 大部分；大多数
反义词：minority n. 少数人；少数群体
① We must take steps to end the war.
② We are taking steps to prevent pollution.
③ We must take steps to prevent this tragedy from happening again.
take steps to do sth
我们正在采取措施防止污染。
我们必须采取措施阻止这类悲剧再次发生。
我们必须采取措施来结束这场战争。
① The majority was / were in favour of(赞同) the proposal.
② Who says the majority is always able to make the minority agree with their idea
3) 当majority后不接of短语时，如强调整体，谓语动词用单数；如强调众多个体，谓语动词用复数。
大多数人赞成这个提议。
谁说多数人总能使少数人同意他们的想法？
①The majority of students find it hard to learn German.
② The majority of people is more than half of the population.
③The majority of people interviewed prefer TV to radio.
2) majority常与of连用，后接复数可数名词。
a. 当“ majority of+复数名词”作主语时，谓语动词一般用复数。
b. 当“majority of +集体名词”作主语时，谓语动词用单、复数均可。
大部分学生认为学德语很难。
大部分人指的是人口的一半以上。
大多数接受采访的人都喜欢看电视多于听收音机。
2. It takes hundreds of years for plastic to break down, but much less time for paper.
塑料需要数百年才能分解，而纸的降解时间要短的多。
① Food is broken down in the stomach.
② Bacteria(细菌) break down the animal waste to form methane gas(沼气).
to make a substance separate into parts or change into a different form in a chemical process 使分解
食物在胃里分解。
细菌使动物粪便分解形成沼气。
break down
① On my way to the station my car broke down.
② Her health broke down under the pressure of work.
③ He broke down and wept when he heard the news.
情不自禁地哭起来
(机器等) 出故障
被搞垮；垮掉
本句含有句型：It takes （sb.）some time/effort + to do sth.”。其中，“it”是形式主语，真正的主语是动词不定式“to do sth.”。
It takes him half an hour to get to work by bus.
他乘公交车上班需要半个小时。
3. When we turn off a device, such as television, it goes into stand-by mode.
当我们关掉电视等电器时，它会进入待机状态。
① Turn the TV off now.
② Don't forget to turn off the lights when you leave.
③ The light is a bit too harsh (刺眼的). You can turn it off.
灯光有点太刺眼了。你可以把灯关掉。
现在把电视机关掉。
离开时别忘了关灯。
to stop the flow of electricity, gas, water, etc. by moving a switch, button, etc.
关掉，截断（电流、煤气、水等）
turn off
an object or a piece of equipment that has been designed to do a particular job
装置；仪器；器具；设备
device
① a water-saving device
② electrical labour-saving devices around the home
③ Rescuers used a special device for finding people trapped(使陷入困境) in collapsed(倒塌的) buildings.
节水装置
节省劳力的各种家用电器
救援者使用特殊设备来寻找被困在倒塌建筑物下面的人。
①It’s common sense to dress more warmly then it gets cold.
②He lacked any of the practical common sense essential in management.
4. It seems like common sense…
这似乎已是人们常识性的认识……
天冷了要穿得暖一点儿，这是常识。
管理方面基本的实用常识他一点也不懂。
the ability to think about things in a practical way and make sensible decisions 常识
common sense
make sense 有道理；有意义；讲得通:
This sentence doesn’t make sense. 这个句子不通。
a sense of... 一种...的感觉
I felt a sense of pride and achievement as I stepped onto the podium.
当我走上领奖台时，我感到一种自豪和成就感。
5. It is the production of food, not its transport, that uses most of the energy and produces most of the greenhouse gases.
强调句: It is/was +被强调部分+that/who+其他成分。
构成强调句的it本身没有实际意义；强调句中的连接词一般只用that或who，即使在强调时间状语和地点状语时也是如此，that或who不可省略；可用于强调句中的时态通常只有两种，即一般现在时和一般过去时。
强调句型的疑问结构：一般疑问句：Is/Was it that …
特殊疑问句：特殊疑问词+is/was it that …
It was my father that/who met with an old friend of his in the street yesterday.
Was it her that you were talking about
Where was it that you saw the man
See You!