Unit 6 Earth first Developing ideas 课件(共22张PPT,内镶嵌视频)-2025-2026学年外研版(2019)必修第二册

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Unit 6 Earth first Developing ideas 课件(共22张PPT,内镶嵌视频)-2025-2026学年外研版(2019)必修第二册

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(共22张PPT)
What’s
really green
Unit 6
Developing ideas
majority
false
amount
device
stand-by
mode
electricity
leak
appliance
n. 多数,大多数 (人或物)
adj. 不正确的,错误的
n. 数量,数额
n. 设备,仪器,装置
adj. 备用的
n. (机器、设备的)运行方式,
状态,模式
n. 电
v. (使)漏,(使) 渗漏
n. 家用电器,家用器具
remove
plug
take ... into account
litre
campaign
urge
canteen
concerned
v. 移走,搬走,去掉
n. (电) 插头
把……考虑进去
n. 升,公升
n. (宣传) 活动
v. 竭力主张,强烈要求,敦促
n. (工厂、学校等的)食堂,餐厅
adj. 焦急的,担忧的
Quiz(测试): How much you know about “green living”
1. Which shopping bag is more environmentally friendly(环保)
A. A plastic(塑料的) bag.
B. A paper bag.
C. Neither(两者都不) of these.
2. What should you do to save energy when leaving your home
A. Turn off(关掉) a device.
B. Unplug a device(拔掉……的电源插头)
C. Neither of these.
Pre-reading
3. What food is better for the environment
A. Food produced near to where you live.
B. Food produced far from where you live.
C. It depends.
4. Which uses less water
A. Taking a bath.
B. Taking a shower(淋浴).
C. It depends.
“视情况而定”
But are your choices really green
What’s the meaning of “green” in this title
A. color
B. peace
C. environmental friendly

Fast reading-read for main idea
It discusses some
① _________ which have been shown to be only②________ or even completely
③_______
green truths
false
half true
(the 1st and the last paragraph)
Read the four subtitles(副标题) 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 environment.
It’s better to take a shower than a bath.
Careful reading-read for detail
Paper shopping bags are better than plastic ones
However, 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温室气体.
We should take a ________________________ with you when you go shopping.
reusable bag
1. In the following, which one is NOT the disadvantage(缺点) of plastic bags
A. Causing litter(垃圾).
B. Being treated as food by wild animals.
C. Taking much more time to break down(分解).
D. Using much more energy to produce.
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.
When you turn off a device, it stops using power
待机状态
We should ____________________ from its power supply.
remove the plug
2. Which one is true according to this part
A. Leaving a device in stand-by mode is
environment-friendly.
B. Older devices use less energy than new ones.
C. Removing the plug from power supply will
stop using power.
D. Using electric devices as little as possible is
the best way to save energy.
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考虑 its transport.
Eating local food is good for the environment
Half true. It all depends.
We should take_______________ into account.
the transport
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.
When you turn off a device, it stops using power
Half true. It all depends.
We should keep____________________ as short as possible.
shower time
3. According to the passage, when should you take a shower
A. Anytime you like.
B. When you spend less than 8 minutes in a shower.
C. When your bath is quite large.
D. When you use about 50 litres of water.
Post-reading
1. Why does the writer write the passage
A. He wants to introduce some new ways to save energy.
B. He wants to correct(改正) the false green truths and show really green ones.
C. He wants to call on(呼吁) more people to protect the environment.
D. He wants to explain(解释) the importance of energy saving.
1.看标题和副标题:《What’s really green》 → 聚焦 “really”(强调“真相”)和 “green”(环保主题)隐含矛盾:“看似绿色” vs “真正绿色”,暗示作者要揭露误区。
2.看首段和末段:作者通常直接点明写作意图。
首:Some “green truths” have been shown to be only half true,or even completely false.
末:But it’s worth checking common ideas and opinions to see what’s really green.
要求分析作者的写作目的(purpose),属于“主旨题”范畴。
Reduce(减少) food waste.
Recycle (回收)paper, cardboard, glass, and so on.
Think &Share:What can you do to become “greener”
Reuse(重复使用) bags while you’re shopping
Reuse
Reduce
Recycle
How to become a “greener”
Take action from now on!
Homework
1. Compulsory:(必做)优化指导p145-146
2. Optional(选做) Surf the internet and find another FALSE green truth.
Thanks

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