外研版（2019）必修 第二册Unit 6 Earth first Developing ideas 公开课课件(共23张PPT)
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| 名称 | 外研版（2019）必修 第二册Unit 6 Earth first Developing ideas 公开课课件(共23张PPT) |  | |
| 格式 | pptx | ||
| 文件大小 | 11.3MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2023-03-13 13:02:05 | ||
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文档简介
(共23张PPT)
Unit 6 Earth first
Developing ideas
Warming-up
1. Do you support “green living”
2. How do we protect environment in our daily lives
Watch the video and discuss the questions.
Pre-reading
Look at the questions about “green living” and tick your answers.
While-reading
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.
Read the four subheadings in the passage, decide whether they are true or false and explain your reasons.
While-reading
Complete the causes of these according to the passage.
While-reading
Devices turned off go into
stand-by mode and still use power.
While-reading
Local produce might use more energy and produce more green-house gases.
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.
1. Which of the “green truths” surprises you most Give your reasons.
2. Are you aware of any other “green truths” that are not true Share
them with the class.
3. How “green” are you Share your “green actions” with the class.
4. What can you do to become “greener”
Post-reading
Think and discuss the questions.
Step 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”
Work in groups. Give a talk about one of the “green truths” in the passage.
Post-reading
Step 2 Organise your talk following the steps below.
Start 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”.
Step 3 Give your talk to the class.
Post-reading
Writing
Read and answer the questions.
1. What is the purpose of the letter
2. What is the existing problem
3. What are the proposed actions
from Class 8
1. What is the purpose of the letter
2. What is the existing problem
3. What are the proposed actions from Class 8
Writing
The purpose of this letter is to call on everyone to take part in the Clear Your Plate campaign.
Over 30% of the world’s food is wasted, while many people in poor areas do not have enough to eat.
Do not order more than you need in the school canteen; order less and take leftover food home when dining in restaurants; call on family members and friends to take part in the campaign.
Writing
Discuss another environmental issue about which to write a persuasive letter and make notes.
Writing
Write a persuasive letter. Use the expressions in the box to help you.
Writing
Dear Friends,
We are writing this letter to raise your awareness of the need to protect our planet. You can help simply by participating in the No Bottled Water Campaign.
People tend to think bottled water is cleaner and more convenient. However, they may not know that according to scientific research, millions of tons of plastic are used worldwide to make water bottles each year. The plastic can take hundreds of years to break down.
If you are worried about the effects of bottled water on the Earth, we would like to suggest you take the following steps.
1. Carry your water in a sustainable, reusable bottle. In this way, you don’t need to buy bottled water.
2. If you have to purchase a plastic bottled beverage, recycle the bottle after use.
3. Ask your family members and friends to take part in this campaign.
Everyone is responsible for making our planet cleaner and better by doing what we can. Let’s start NOW.
With best wishes,
Class 11
A possible version
句型公式：倍数表达法
【教材P91】 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.
然而，生产纸袋的耗能为塑料袋的四倍，耗水则多达三倍。
【记牢】
常用的倍数表达法有：
(1)倍数＋as ...as ...。
(2)倍数＋形容词/副词的比较级＋than ...。
(3)倍数＋the size/height/weight/length/width/depth/amount...＋of ...。
(4)倍数＋what从句。
(5) ...times＋as many (或 much )＋名词＋as ...。
【佳句】 This car costs twice as much money as that one.
这辆汽车的价格是那辆的两倍。
【练透】 单句语法填空
①This building is five times as high __ that one.
②The number of students in our school is three times ______(large) than theirs.
③The new square is four times the size __ the previous one.
④People's average income is almost five times ____ they earned ten years ago.
【写美】 一句多译
⑤我们学校是他们学校的三倍大。
→Our school is three times ___________ their school.
→Our school is three times ___________ their school.
→Our school is three times _________of their school.
as
larger
of
what
as large as
larger than
the size
Notes
1. It is the production of food, not its transport, that uses most of the
energy and produces most of the greenhouse gas.
本句为强调句式，基本结构为It is/was+被强调部分+that/who+其他。
e.g. It wasn’t until I finished film studies that I pursued my career
as an actress.
直到完成电影学习，我才开始从事我的演艺生涯。
Notes
强调句的基本句型：
陈述句：It is/was+被强调部分+that/who+句子其他部分。
一般疑问句：Is/Was it+被强调部分+that/who+句子其他部分。
特殊疑问句：疑问词+is/was+it+that+句子其他部分。
not ... until ...结构的强调句型：It is/was not until ... that ...。
e.g. It was because it was raining that we cancelled our picnic.
正是因为下雨我们才取消了野餐。
Notes
2. But it’s worth checking common ideas and opinions to see what’s really green.
be worth doing意为“值得做；值得做某事”。
e.g. He always tells lies, so nothing he said was worth listening to.
他总是说谎，所以他说的话没有一句值得听。
be worth+钱数 值……钱 be worth+doing 值得……
worthy adj. 值得的 be worthy of +n. 值得……
be worthy to be done/of being done 值得……
e.g. Is it worth visiting the city which is famous for its history
这个因历史而出名的城市值得去参观吗
Assignment
Search more information about the “green truths” on the Internet, decide on one and write a short paragraph about it.
Start your writing by stating the topic.
Describe the “green truth” in more detail—why people
believe it’s “green”.
Explain why it is not completely true.
End your talk by encouraging others to become “greener”.
Goodbye!
Unit 6 Earth first
Developing ideas
Warming-up
1. Do you support “green living”
2. How do we protect environment in our daily lives
Watch the video and discuss the questions.
Pre-reading
Look at the questions about “green living” and tick your answers.
While-reading
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.
Read the four subheadings in the passage, decide whether they are true or false and explain your reasons.
While-reading
Complete the causes of these according to the passage.
While-reading
Devices turned off go into
stand-by mode and still use power.
While-reading
Local produce might use more energy and produce more green-house gases.
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.
1. Which of the “green truths” surprises you most Give your reasons.
2. Are you aware of any other “green truths” that are not true Share
them with the class.
3. How “green” are you Share your “green actions” with the class.
4. What can you do to become “greener”
Post-reading
Think and discuss the questions.
Step 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”
Work in groups. Give a talk about one of the “green truths” in the passage.
Post-reading
Step 2 Organise your talk following the steps below.
Start 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”.
Step 3 Give your talk to the class.
Post-reading
Writing
Read and answer the questions.
1. What is the purpose of the letter
2. What is the existing problem
3. What are the proposed actions
from Class 8
1. What is the purpose of the letter
2. What is the existing problem
3. What are the proposed actions from Class 8
Writing
The purpose of this letter is to call on everyone to take part in the Clear Your Plate campaign.
Over 30% of the world’s food is wasted, while many people in poor areas do not have enough to eat.
Do not order more than you need in the school canteen; order less and take leftover food home when dining in restaurants; call on family members and friends to take part in the campaign.
Writing
Discuss another environmental issue about which to write a persuasive letter and make notes.
Writing
Write a persuasive letter. Use the expressions in the box to help you.
Writing
Dear Friends,
We are writing this letter to raise your awareness of the need to protect our planet. You can help simply by participating in the No Bottled Water Campaign.
People tend to think bottled water is cleaner and more convenient. However, they may not know that according to scientific research, millions of tons of plastic are used worldwide to make water bottles each year. The plastic can take hundreds of years to break down.
If you are worried about the effects of bottled water on the Earth, we would like to suggest you take the following steps.
1. Carry your water in a sustainable, reusable bottle. In this way, you don’t need to buy bottled water.
2. If you have to purchase a plastic bottled beverage, recycle the bottle after use.
3. Ask your family members and friends to take part in this campaign.
Everyone is responsible for making our planet cleaner and better by doing what we can. Let’s start NOW.
With best wishes,
Class 11
A possible version
句型公式：倍数表达法
【教材P91】 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.
然而，生产纸袋的耗能为塑料袋的四倍，耗水则多达三倍。
【记牢】
常用的倍数表达法有：
(1)倍数＋as ...as ...。
(2)倍数＋形容词/副词的比较级＋than ...。
(3)倍数＋the size/height/weight/length/width/depth/amount...＋of ...。
(4)倍数＋what从句。
(5) ...times＋as many (或 much )＋名词＋as ...。
【佳句】 This car costs twice as much money as that one.
这辆汽车的价格是那辆的两倍。
【练透】 单句语法填空
①This building is five times as high __ that one.
②The number of students in our school is three times ______(large) than theirs.
③The new square is four times the size __ the previous one.
④People's average income is almost five times ____ they earned ten years ago.
【写美】 一句多译
⑤我们学校是他们学校的三倍大。
→Our school is three times ___________ their school.
→Our school is three times ___________ their school.
→Our school is three times _________of their school.
as
larger
of
what
as large as
larger than
the size
Notes
1. It is the production of food, not its transport, that uses most of the
energy and produces most of the greenhouse gas.
本句为强调句式，基本结构为It is/was+被强调部分+that/who+其他。
e.g. It wasn’t until I finished film studies that I pursued my career
as an actress.
直到完成电影学习，我才开始从事我的演艺生涯。
Notes
强调句的基本句型：
陈述句：It is/was+被强调部分+that/who+句子其他部分。
一般疑问句：Is/Was it+被强调部分+that/who+句子其他部分。
特殊疑问句：疑问词+is/was+it+that+句子其他部分。
not ... until ...结构的强调句型：It is/was not until ... that ...。
e.g. It was because it was raining that we cancelled our picnic.
正是因为下雨我们才取消了野餐。
Notes
2. But it’s worth checking common ideas and opinions to see what’s really green.
be worth doing意为“值得做；值得做某事”。
e.g. He always tells lies, so nothing he said was worth listening to.
他总是说谎，所以他说的话没有一句值得听。
be worth+钱数 值……钱 be worth+doing 值得……
worthy adj. 值得的 be worthy of +n. 值得……
be worthy to be done/of being done 值得……
e.g. Is it worth visiting the city which is famous for its history
这个因历史而出名的城市值得去参观吗
Assignment
Search more information about the “green truths” on the Internet, decide on one and write a short paragraph about it.
Start your writing by stating the topic.
Describe the “green truth” in more detail—why people
believe it’s “green”.
Explain why it is not completely true.
End your talk by encouraging others to become “greener”.
Goodbye!