(共20张PPT)
Developing ideas
Unit 6 Earth First
Green
You are green.
a green hand
green lifestyle/ living
Look at the questions about “green living” and tick your answers.
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.
What’s really green
Read the passage (P90-92) and find the answer.
As subheadings expand on the main heading or title, they can be slightly longer than the main heading. Although not every paragraph needs a subheading, they can be skimmed to give the reader an overall understanding of the content of a text.
Learning to learn
Read the four subheadings in the passage and decide if they are true or false.
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.
Then read the passage and check your answers.
False. Making a paper bag uses four times as much energy as making a plastic bag and up to three times the amount of water. The process also produces more greenhouse gases.
In fact, both kinds of bags are bad for the environment. So, take a reusable bag with you when you go shopping.
Paper shopping bags are better than plastic ones.
When you turn off a device, it stops using power.
False. When we turn off a device, such as television, it goes into stand-by mode. Devices in this mode still use power, and older devices in stand-by mode can use even more.
To make sure your appliance is in fact off, remove the plug from its power supply.
Apart from the transport, we should take the production of food into account.
Eating local food is good for the environment.
False. In some cases, local produce might have used more energy and produced more greenhouse gases than produce grown a long way away — even taking into account its transport.
The key is to keep your shower time as short as possible.
It’s better to take a shower than a bath.
False. It depends on how long you spend in the shower and how large your bath is. If you spend more than eight minutes in a shower, you’ll use as much water as in a bath — about 50 litres of water.
Figure out the structure of the passage.
Introduction
Conclusion
III
Intensive reading
P92 Complete the cause-effect flow chart.
Devices turned off go into stand-by mode and still use power.
Local produce sometimes might use more energy and produce more greenhouse gases.
If you spend more than 8 minutes in a shower, you’ll use as much wate as in a bath.
Ⅳ
Post-reading
Which of the “green truths” surprises you most Give your reasons.
Are you aware of any other “green truths” that are not true Share them with the class.
How “green” are you Share your “green actions” with the class.
What can you do to become “greener”
Think Share
Which of the “green truths” surprises you most Give your reasons.
Various answers are possible.
2. Are you aware of any other “green truths” that are
not true Share them with the class.
The organic food sometimes is not as green as we suppose; The car using electricity instead of petrol is not energy-saving …
Think Share
3. How “green” are you Share your “green actions” with
the class.
Various answers are possible.
Turn off the lights and remove the plugs of electric devices when I go out or don’t use them;
Give the old clothes to others to reuse them;
Take a cloth bag or shopping basket instead of plastic bags when shopping …
4. What can you do to become “greener”
Think Share
Thanks
