外研版（2019） 必修第二册 Unit 6 Earth First Developing ideas课件-（47张）

(共47张PPT)
大观念视角下的单元整体学习
主题语境 “人与自然”——关爱地球、保护环境
正视环保问题
单元大观念：正视全球面临的环保问题，了解先进的环保理念，增强环保意识，践行绿色生活方式，树立共同关爱地球，保护环境，与自然和谐相处的价值观。
子主题
Period 1
Starting out & Vocabulary
感知环境问题；学习主题语块
把握主题，建立各语篇关联，形成大观念
Period 3
Using language: Grammar
关注海洋环境；聚焦人类活动
Period 4
Listening & Speaking
讨论雾霾污染；礼貌打断他人
增强环保意识
践行环保理念
Period 2
Understanding ideas
打破传统观念；重新认识鲨鱼
Period 5
Developing ideas
了解先进理念；真正绿色生活
Period 6
Writing
宣传光盘行动；环保共同参与
Period 7
Presenting ideas & Reflection
关注“碳足迹”;回顾单元内容
Book 2 Unit 6
Earth first
Period 5 Developing ideas
What's really green
At the end of the class, you'll be able to:
distinguish some real green living truths from false ones;
understand the logic of causes-effects-measures in the context of a green lifestyle;
put what you’ve learnt today into daily practice to live a real green life.
Learning Objectives:
Questions:
What are real green living truths
What are the false ones
What are causes-effects-measures
How can we put the logic into use (talk, presentation)
How can we take actions to save our planet
Green Lifestyle
save water
reduce waste
choose reusable items
use renewable energy
turn off electric devices
donate old clothes
walk, bike, carpool ...
Watch & Brainstorm
Watch the video and think about what we should do to protect the environment.
Activity 1
Watch & Brainstorm
Nature is Speaking ...
Activity 1
What does she really want to say
Pay close attention to the lines. Try to make some notes.
What is the clip mainly about
In your opinion, which lines impress you most
When I thrive, you thrive. When I falter, you falter, or worse.
How you choose to live each day, whether you regard or disregard me, doesn’t really matter to me. Your actions will determine your fate, not mine. I am nature. I will go on. I am prepared to evolve. Are you
a rhetorical sentence
Green Lifestyle
reduce waste
take a shower
use paper bags instead of plastic ones
turn off lights
eat local food
Chect out
Activity 2
Quiz time!
How much do you know about a green lifestyle
Look at the questions about “green living” and tick your answers.
1. Which shopping bag is more environmentally friendly
A plastic bag.
A paper bag.
Neither of these.
2. What should you do to save energy when leaving your home
Turn off a device.
Unplug a device.
Neither of these.
3. What food is better for the environment
Food produced near to where you live.
Food produced far from where you live.
It depends.
4. Which uses less water
Taking a bath.
Taking a shower.
It depends.
Think & Predict
What's green
What's really green
Activity 3
Look at the two titles and think out the differences between them and WHY the author uses “What's really green” instead of “What's green”.
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 in terms of carbon footprint.
It’s better to take a shower than a bath to save water.
Think & Predict
Activity 3
subheadings
Read & Decide
Read the subheadings in the passage and decide if they are true or false.
expand on: to add details to what you are saying
Activity 4
What's really green
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 in terms of carbon footprint.
It’s better to take a shower than a bath to save water.
Expand on the main heading
Slightly longer than the main heading
Give the reader an overall understanding of the text
Read & Decide
Read the subheadings in the passage and decide if they are true or false.
expand on: to add details to what you are saying
Activity 4
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 in terms of carbon footprint.
It’s better to take a shower than a bath to save water.
Read & Decide
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 in terms of carbon footprint.
It’s better to take a shower than a bath to save water.
Read the passage, check your answers and then figure out how these statements go wrong.
Read & Think
Activity 5
Plastic bags cause litter and are a danger to animals.
It takes hundreds of years for them to break down.
When we turn off a device, it goes into stand-by mode.
Local food does not need to be transported long distances and kept cool during transport.
Taking a shower uses less water than a bath.
Why do people believe these statements are true
Plastic bags cause litter and are a danger to animals.
It takes hundreds of years for them to break down.
Making a paper bag uses _________ as much energy as making a plastic bag and up to three times _________________ and produces more ________________.
four times
the amount of water
greenhouse gases
What kind of bag is a better choice
A reusable bag is a better choice.
What else can be reused in our daily life
shopping bag
thermos (保温杯)
coffee cup
meal box
When we turn off a device, it still uses power.
Devices in _________ mode still use power, and older devices in this mode can use even more, because electricity continues to __________ the devices, even when it is turned “off”.
stand-by
leak from
“off”
Why is the word “off” put into a quotation mark
Because the appliance is not really off, and it goes into stand-by mode and still uses power.
What can you learn from this “green truth”
What else can we do to save energy (electricity or water)
We need to remove our cellphone charger (充电器) from the power supply, and also unplug other household appliances, for example, washing machine, television, reading lamp and so on.
Local food does not need to be transported long distances and kept cool during transport.
____________ might have used more _______ and produced more greenhouse gases even ___________________________.
Local produce
energy
taking into account its transport
Taking a shower uses less water than a bath.
If you spend over ____________ in a shower, you’ll use _______________ in a bath – about ______________.
eight minutes
as much water as
50 litres of water
What's a better way to take a shower
Keep your shower time as short as possible.
Take a reusable bag with you when you go shopping.
To make sure the appliance is in fact off, remove the plug from its power supply.
Eating local food isn't always better for
the environment.
Keep your shower time as short as possible.
Read & Reflect
How much do you know about a green lifestyle, after reaing the text
Activity 6
Have this quiz, again!
1. Which shopping bag is more environmentally friendly
A plastic bag.
A paper bag.
Neither of these.
2. What should you do to save energy when leaving your home
Turn off a device.
Unplug a device.
Neither of these.
3. What food is better for the environment
Food produced near to where you live.
Food produced far from where you live.
It depends.
4. Which uses less water
Taking a bath.
Taking a shower.
It depends.
Read & Summarise
Activity 7
Find words and expressions that can connect the causes and effects.
because of this, This happens because, if, due to the fact that,
so, therefore, thus, then, as a result, consequently
Since
For example:
Making a paper bag uses more energy and water than making a plastic bag. It also produces more greenhouse gases. CONSEQUENTLY, paper bags are not good for the environment.
SINCE you'll use the same amout of water as in a bath if you spend more than eight minutes in the shower, it's not always better to take a shower than a bath.
......
Retell & Review
Activity 8
Retell the passage based on the mind map.
Paper shopping bags
time to break down; energy and water; greenhouse gases; a reusable bag
electric devices
power leak in stand-by mode; remove the plug
Really
Green
local food
shower or bath
in some cases; more energy; more greenhouse gases
It depends; shower time; eight minutes
For example:
Recently, some green truths have been proved to be only half true, or even completely false. For example, the majority of people mistake paper bags as much more environmentally friendly than plastic ones. Actually, making a paper bag consumes four times as much energy as making a plastic one and up to three times the amount of water. The process also produces more greenhouse gases. Consequently, taking a reusable bag is a better choice.
The 1_______(major) of us take steps to save energy and reduce pollution. But recently, some “green truths” 2_______________(show) to be only half true, or even 3_________(complete) false.
Plastic bags cause litter and are a danger to wild animals, 4______mistake them for food. So people think paper bags are the better environmental choice. 5_________, making a paper bag uses four times as much energy 6___ making a plastic one. In fact, both kinds of bags are bad 7_____ the environment. You should unplug a device rather than turn it off when 8_______(leave) your home. Is eating local food good for the environment The answer is “No”. 9___is the production of food, not its transport, that uses most of the energy. People often thinks it`s better to take a shower than a bath, but it`s not right. It depends on how long you spend in the shower and how large your bath is. 10_________ , the key is to keep your shower time as short as possible.
majority
have been shown
completely
which
However
as
for
leaving
It
Therefore
直击高考
Think & Share
Are you aware of any other “green truths” that are not true
Activity 9
1
2
Some tips!
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 true.
End your talk by encouraging your audience to become “greener”.
Topic: Are electric cars really “green”
Description: Electric cars run on electricity and they don’t burn gasoline at all; therefore they don’t emit CO2, thus creating “zero emission” (零排放).
For example:
Explanation: Although driving an electric car does not cause any air pollution, the pollution mainly comes from the production of its battery and the electricity used to keep it running. The production of the electric batteries requires lithium(锂). A large amount of energy is used on mining and processing this metal. Meanwhile, the electricity by which electric cars are powered is mainly from burning coal or gas. All of these contribute to carbon emissions. Consequently, electric cars aren’t really green.
Take actions now!
What can we do to become “greener” or become really green, not just green
Changing Your Personal Habits
Carry a reusable water bottle so you will not need bottled water.
Use reusable bags while you’re shopping.
Reuse items to save them from the landfill.
Reduce the amount of time you spend using electronics(电子产品).
Buy second-hand products or borrow items instead of buying them new.
Turn lights off when they aren’t in use
Creating a Green Home
Cut down on your water use.
Line dry your clothing instead of using a dryer.
Eat less meat because it takes more resources to raise.
Recycle paper, cardboard, plastic, glass, and metal cans.
Staying Green on the Move
Walk or ride a bike to some places if you live close enough.
Use public transportation to travel long distances.
Everyone can't do everything, but everyone can do something.
Homework
Discover more green truths that are not completely true and explain these ideas by using the causes-effects-measures.
Thanks for watching!