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Module 12 Save our world
【教学内容分析】
本模块以环境污染以及环保为 ( http: / / www.21cnjy.com )话题。本单元是通过工厂污染环境谈论环保，提倡绿色生活，锻炼学生的语言表达能力，并提高学生的环保意识。通过本单元的听说活动，给学生提供充足的体验和运用语言的机会。
【学情分析】
本模块谈论环境污染和环保，污染问题普遍，学生亲身体会比较多，容易调动学生的积极性，激发学生的学习兴趣。
Unit 1
If everyone starts to do something, the world will be saved.
【教学目标】
Knowledge objective
To master some words and expressions.
Ability objective
To understand a conversation about pollution and a green school.
Moral objective
To learn the crisis of the earth and save the world.
【教学重点】
1. To learn and review some words and expressions：
factory, pol ( http: / / www.21cnjy.com )lute, recycle, waste, enemy, crop, kill, oil, less, such as, hopeless …
2. To learn how to live a green life.
【教学方法】
PWP method, task-based method and interactive approach
【教学手段】
A tape recorder, multimedia and some pictures
【教学过程】
Teaching Procedures:
Step 1 Warming up
Pollution is our g ( http: / / www.21cnjy.com )reat enemy, and we have to fight it. Let Ss watch a video about pollution. Ss look at the pictures and talk about the questions.
Step 2 Listening
Work in pairs. Look ( http: / / www.21cnjy.com ) at the pictures and talk about them. Use the words in the box to help you.
factory pollute recycle waste
Step 3 Listen and complete the sentences.
1. The factory is causing a lot of _____________.
2. There should be some ________ to stop the pollution.
3. We can _______ waste products, such as __________ and paper in a recycling centre.
Listen and read.
Step 4 Consolidate new words
Look and say. Look a ( http: / / www.21cnjy.com )t the pictures of new words and let the students to say as quickly as possible.
Step 5 Reading
Read the dialogue and complete the notes.
Pollution problems
1. If the rivers a ( http: / / www.21cnjy.com )re polluted, ________________________________________.
2. In some places, ( http: / / www.21cnjy.com )pollution from factories ___________________________.【出处：21教育名师】
3. The cars on the roads ________________________________________.
What the students can do
4. Support a gr ( http: / / www.21cnjy.com )een school: every class ___________ which can be ____________. Then the school _______________________ to help students ________________.
5. Students learn _________________________. That means ___________.
Step 6 Everyday English
It’s no use …
Such as …
Nice idea!
Step 7 Language points
1. It’s no use talking about things we can’t do.
It’s no use doing sth. 做某事没有用处
e.g. It’s no use complaining. 抱怨没有用处。
Listen, George, it’s no use living in the past.
听着, 乔治, 活在过去是没有用的。
2. Such as ...
such as 这个短语常用来表示举例说明。
e.g. — There are lots of things you could do. 有很多你们能做的事。
— Such as … 比如说……？
3. That means less waste.
less adj. 较小的; 较少的
n. 较少数; 较少量
less 是 little 的比较级, 指物体的体积或分量相对于别的物体少。
e.g. The firm has less money and fewer staff than last year.
公司的资金和人员都比去年少了。
4. Though pollution is heavy now, I don’t think it’s hopeless.
hopeless adj. 无望的
e.g. The doctor said the old man’s condition was hopeless.
医生说这位老人的病是没有希望的了。
Step 8 Exercises
Complete the passage with the correct form of the words in the box.
cause enemy factory kill oil pollute spread
Pollution is our gr ( http: / / www.21cnjy.com )eat ________. Pollution from ________ is a danger to our health, and may even _______ people. Factories sometimes ________ the rivers, and farmers cannot use the water for their crops. Pollution _________ over cities and villages, and that _________ even more danger. Cars use a lot of _____ and cause pollution too.
Step 9 Pronunciation and speaking
Listen and mark the words which the speaker links.
1. After our lesson on the environment, I’m worried about the future.
2. Students at a gree ( http: / / www.21cnjy.com )n school also learn ways to save energy and recycle at home.
Now listen again and repeat.
Step 10 Work in pairs.
List the po ( http: / / www.21cnjy.com )llution problems in your place. Choose one problem and say what should be done about it.
For example
— The air pollution ( http: / / www.21cnjy.com ) in our city is getting worse. What can we do to stop it
— I think we can ride our bicycles to school more.
Step 11 Homework
Write a passage abo ( http: / / www.21cnjy.com )ut how to control pollution and how save our earth.
Unit 2
Repeat these three words daily: reduce, reuse and recycle.
【教学目标】
Knowledge objective
To master some words and expressions
Ability objective
Enable students to know about how to live a green life.
【教学重点】
1. To learn the words and expressions.
2. To learn the reading method.
【教学方法】
PWP method, task-based method
【教学手段】
A tape recorder, multimedia and some pictures
【教学过程】
Teaching Procedures:
Step 1 Warming up
Do you live a green life
Resource conservation and pollution reduction
节约资源, 减少污染
Green consumption and green purchase
绿色消费, 环保选购
Repeated use
重复使用，多次利用
Recycling
分类回收，循环再生
Natural protection and co-existence
保护自然，万物共存
Save the earth and save us.
Step 2 New words
Look at the pictures of new words and let the students say new words.
Step 3 Reading
1. Look at the pictu ( http: / / www.21cnjy.com )res. Say which ways are good for the environment and why.
2. Look at the title o ( http: / / www.21cnjy.com )f the passage. What suggestions do you think the passage will make Use the words in the box to help you.
china divide necessary plastic policy reuse
It is better to us ( http: / / www.21cnjy.com )e china cups and bowls because they can be used many times.
Step 4 Read the passage and answer the questions.
Which ways are good for the environment and why
Step 5 Check (√) the suggestions that are mentioned in the passage.
1. Order food that you can finish.
2. Use less electricity at home.
3. Learn ways to recycle rubbish.
4. Use paper cups and bags.
5. Repair things.
6. Divide rubbish into different groups.
7. Collect waste or rubbish to raise money.
8. Burn things to save energy.
Keys: 1, 2, 3, 5, 6
Step 6 Find two thi ( http: / / www.21cnjy.com )ngs you should do and two things you should not do in the passage. Find reasons. Use your answers to write sentences.
We should recycle ru ( http: / / www.21cnjy.com )bbish because it can help us protect the environment.
Step 7 Language points
1. We throw tons ( http: / / www.21cnjy.com )of rubbish away each year, and we have to make a change. 21·世纪*教育网
ton n. 吨
tons of 许多, 很多
e.g. We’ve bought tons of beer for the party tonight.
我们已经为今晚的聚会买了大量啤酒。
throw away 扔掉; 丢弃
e.g. When are you going to throw away those old magazines
你打算什么时候扔掉那些旧杂志？
He has thrown away a good opportunity.
他已经失去了一个良好的机会。
2. Repeat these three words daily: reduce, reuse and recycle.
repeat v. 重说; 重新做
前缀“re-”, 意思是“再, 重复”
e.g. I repeated after the teacher word by word.
我跟着老师一个字一个字地读。
reuse v. 再次使用; 重复利用
e.g. She often reuses old envelopes.
她经常重复使用旧信封。
The bottles can be reused up to 20 times.
这些瓶子可重复使用达20次。
3. Although it tak ( http: / / www.21cnjy.com )es energy to change things into something else, it is better than throwing things away or burning them.
change … into … 把……变成……
e.g. You can’t change iron into gold. 你无法把铁变成金子。
4. We cannot hope f ( http: / / www.21cnjy.com )or rapid change, but let’s take these simple steps today …
take steps 采取措施
e.g. We need to take some steps to reduce pollution. 21教育网
我们需要采取一些措施了减少污染。
Step 8 Practice
Complete the passage with the correct form of the words in the box.
divide gran ( http: / / www.21cnjy.com )ddaughter plastic policy rapid recycle repeat step ton
We throw a ( http: / / www.21cnjy.com )way _______ of rubbish every year. If we want a clean world for our grandsons and _________, we have to reduce, reuse and ________. ______ these three words every day. The first ______ is to use less. The second is to use things as long as possible. Then ________ your rubbish into _________, paper, rubber and glass. Finally, draw up a recycling _______ for your community. We cannot hope for ______ change, but every little bit helps!
Keys: tons, granddaug ( http: / / www.21cnjy.com )hters, recycle, Repeat, step, divide, plastic, policy, rapid
Step 9 Writing
Work in pairs. Make a ( http: / / www.21cnjy.com )list of things you can do to make your school greener. 21*cnjy*com
Don’t throw bottles away.
Write a passage on how ( http: / / www.21cnjy.com ) to make your school greener and give reasons. Use the list you have made in Activity 7 to help you. Use because, so and so that.
Don’t throw bottles away because it is better to recycle them.
Unit 3 Language in use
【教学目标】
Knowledge objective
To practice word-building: compounds, derivatives, conversion
Ability objective
Enable students to learn how to protect environment and Earth Hour.
Moral objective
To arouse the awareness of students protecting environment.
【教学重点】
To learn word-building: compounds, derivatives, conversion
【教学方法】
PWP method, task-based method
【教学手段】
A tape recorder, multimedia and some pictures
【教学过程】
Teaching Procedures:
Step 1 Language practice
Reuse means “use again”.
Though pollution is heavy now, I don’t think it’s hopeless.【版权所有：21教育】
Step 2 Make a ( http: / / www.21cnjy.com )new words. Join the parts of words in Box A with the words in Box B. You need to use some of the parts more than once.
A –able -ful im- -less re- un-
B care coll ( http: / / www.21cnjy.com )ect hope possible use usual wanted waste
Step 3 Now work in groups. Play the guessing game English for Fun.
English for Fun
1. full of care ____________
2. can be collected ____________
3. full of hope ____________
4. without any hope ____________
5. not possible ____________
6. not usual ____________
7. without any use ____________
8. use again ____________
9. not wanted ____________
10. making a lot of waste ____________
Step 4 Learning to learn
Sometimes if you know ( http: / / www.21cnjy.com ) the meaning of the parts of a word, you can work out the meaning of the whole word.
re + new + able;
re = again,
able = can be
renewable = can be new again
Step 5构词法
1. 合成法
将两个或两个以上独立且语义不同的单词合 ( http: / / www.21cnjy.com )在一起构成新词的方法叫做合成法。合成法是一种比较灵活的构词方法，可以合成名词、形容词、副词、代词、动词等。例如：afternoon, sportsman, blackboard, sportsperson, newspaper,
airplane, classma ( http: / / www.21cnjy.com )te, grandfather 等就是通过合成构词法构成的名词；kind-hearted, middle-aged, hard-working 等为合成形容词；however, maybe, himself, everyone, nothing, overlook 等也都是通过合成法构成的单词。
2. 派生法
通过在词根前面加前缀或在词根后面加后缀构成一个新词的方法叫作派生法。要通过派生法理解和记忆单词, 我们需要掌握常见的前缀和后缀及派生规律。
(1) 常见前缀
前缀 含义 例词
dis- 不 disagree, dislike
en- 使……处于某种状态 enable, enrich
im-, in- 不 impossible, impatient, inexpensive
inter- 在……之间, 相互 international, interconnect
mis- 错误地 mislead, misunderstand
non- 不, 非 non-smoker, non-native
re- 再, 重复 rewrite, retell
un- 不 unable, unhappy, unpopular
(2) 常见后缀
后缀 功能 例词
-er, -or 构成名词 teacher, worker, visitor
-ian musician
-ing building, painting, shopping, meaning
-ist artist, scientist
-ment agreement, government
-ness coldness, happiness, illness
-th truth, warmth
-tion competition, education, information, invitation
-ty activity, safety
-ble, ible 构成形容词 comfortable, eatable, enjoyable, possible, probable
-al environmental, international, national, traditional
-ful careful, helpful, useful
-ive active, expensive
-less careless, helpless, homeless, useless
-ly friendly, lovely, monthly, weekly
-ous dangerous, famous
-teen 构成数词 eighteen, fifteen, seventeen
-th fifteenth, fifth, fortieth, seventh
-ty forty, sixty, twenty
-ly 构成副词 badly, carefully, carelessly, happily, quickly
(3) 派生规律
由一个词根加上相应的词缀可以派生出名词、形容词、副词等，掌握派生规律对扩充词汇有很大帮助。例如：
由 interest 可以派生出：
uninteresting
interest — interesting — interestingly
interested — uninterested
由 help 可以派生出：
helpless — helplessly
help — helpful — helpfully
由 able 可以派生出：
enable
able unable
ability
disable
3. 转化法
英语构词法中把一种词性转化为另一种词性而词形不变的方法称作转化法。常见的转化有：
(1) 动词转化为名词
— Let’s talk about it more. 咱们再谈谈这件事吧。
— I think we’d better finish the talk now. 我想我们最好现在结束谈话。
(2) 名词转化为动词
She gave me a cup of water. 她给了我一杯水。
You should water the flowers twice a day.
你应该每天给这些花浇两次水。
(3) 形容词转化为名词
She was wearing a black dress.
她穿着一条黑色的裙子。
The girl in black looks very beautiful.
那个穿黑衣服的女孩看上去很漂亮。
Step 6 Exercises
Complete the sentences with the words in the box.
hopeful impossible reuse unhealthy wasteful21世纪教育网版权所有
1. Polluted water is ____________.
2. It is _________ to throw so much food away.
3. If you look a ( http: / / www.21cnjy.com )fter things well, you may ________ some of them later.21cnjy.com
4. It is ___________ to clean up the whole river in such a short time.21·cn·jy·com
5. If we pay atte ( http: / / www.21cnjy.com )ntion to pollution now, the future will be __________. 21*cnjy*com
Step 7 Complete the table.
Noun Verb Adjective Adverb
useful/useless
hope hopefully / hopelessly
pollution ——
water —— ——
waste
—— —— usually/unusually
Step 8 Complete th ( http: / / www.21cnjy.com )e sentences with the correct form of the words in Activity 3.
She was hopeful that her new job would make her more successful.【来源：21·世纪·教育·网】
1. The factory ___________ the river, and the fish died.【来源：21cnj*y.co*m】
2. We often walk in ( http: / / www.21cnjy.com ) the countryside. It is a(n) _______ activity for us.21教育名师原创作品
3. Do not use so much water. It is very __________.
4. To keep t ( http: / / www.21cnjy.com )he flowers growing, you need to _________ them once a day.
Step 9 Complete the sentences.
A lunchbox is a box that you keep your lunch in.
1. A ___________ is a card that you write on one side of and send to someone by post.
2. A ___________ is a room where you have classes at school.
3. A ___________ is a book that has one or more stories for children.
4. A ____________ is a black board that is used at school for writing on with chalk.
Step 10 Work in pairs
Look at the pictures and answer the questions.
1. What kinds of things can be recycled
2. How can these things be reused
3. How does this help the environment
4. Have you ever recycled or used things that can be recycled How www.21-cn-jy.com
Step 11 Complete ( http: / / www.21cnjy.com )the conversation with the correct form of the expressions in the box.
be good for throw away turn off worry about
Mike: I hear you ( http: / / www.21cnjy.com ) are off to the Caribbean for a holiday! Lucky you! But aren’t you _____________ the pollution that such long plane journey may cause for the environment 2·1·c·n·j·y
Ken: I know, but ( http: / / www.21cnjy.com )what can I do about it I’ve already tried my best to protect the environment. I recycle. I don’t ____________ things if I don’t want them any more. I __________ the lights when I leave a room. Don’t tell me I shouldn’t travel by plane any more!www-2-1-cnjy-com
Mike: No, of ( http: / / www.21cnjy.com )course not. But we can do more to protect the environment. For example, we can help keep the air clean by planting trees. Trees ______________ the environment. In this way, we can reduce the harm of pollution.
Ken: Good! So I ( http: / / www.21cnjy.com ) can enjoy my holiday, and when I come back, I’ll plant some trees!
Mike: That’s the idea! ( http: / / www.21cnjy.com ) Maybe we can all join in and start a small forest!
Step 12 Listening
Listen and check (√) the true sentences.
a) Do not throw away ( http: / / www.21cnjy.com )things made of glass, plastic and paper, but recycle them when possible.
b) Take a bag when you go shopping.
c) It is OK ( http: / / www.21cnjy.com )to throw used things away. Looking after them takes a lot of time.
d) Turn off lights when you do not need them.
e) Ride a bike or walk, and do not often drive your car.
f) Paper cup ( http: / / www.21cnjy.com )s and bottled drinks make our life easier. We can use them as much as possible.
Step 13 Listen again and complete the table.
Advice Reasons
1. Don’t throw away things made of _________, but _______ them. Throwing things away is wasteful.
2. __________ your ( http: / / www.21cnjy.com ) plastic bags when you can and __________ with you when you go shopping. Plastic bags __________ recycle.
3. Use less electricity and oil to _________.4. Don’t leave lights on and __________. 5. ________ and do not often drive your car. Producing electricity and using oil may cause ___________.
Step 14 Around the world
Earth Hour
Read the passage and answer the questions.
When is Earth Hour held each year
Why do people switch off the lights during Earth Hour 2-1-c-n-j-y
When and where was the first Earth Hour held
Which city take part in the event today
Step 15 Module task: Discussing what you can do about pollution
Work in groups. Decide what kind of pollution you want to talk about.
Choose a subject th ( http: / / www.21cnjy.com )at you care about the most. It could be water pollution, air pollution, etc.
Find out more inform ( http: / / www.21cnjy.com )ation about your subject. Look it up on a website or in a book.
If you choose air p ( http: / / www.21cnjy.com )ollution, let’s watch a video about air pollution from a factory.
Do you know PM 2.5 Le ( http: / / www.21cnjy.com )t’s know more about PM 2.5 and protect the environment from now.
Step 16 Discussion
Discuss your subject.
Take turns to s ( http: / / www.21cnjy.com )ay what you think about the problems and what can be done.
Listen to what ot ( http: / / www.21cnjy.com )hers say. If you agree with what they have said, say “I agree”. “That’s true” or “That’s a good point”; if you do not agree with what someone says, say “I’m sorry, but I don’t agree. I think that …”
Step 17 Homework
Present your group ideas to the whole class.
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Pollution
Pollution is our great enemy, and we have to fight it. Let’s watch a video about pollution.
Work in pairs. Look at the pictures and talk about them. Use the words in the box to help you.
factory pollute recycle waste
Listen and complete the sentences.
The factory is causing a lot of
_____________.
2. There should be some ________ to stop
the pollution.
3. We can _______ waste products, such
as __________ and paper in a recycling
centre.
Listen and read.
pollution
rules
recycle
glass
factory n.
制造厂; 工厂
pollute v. 污染
recycle v.
回收利用, 再使用(废品)
waste n.
废料; 废弃物
enemy n.
敌人; 仇人
crop n.
庄稼; 作物
kill v.
杀死; 弄死
oil n. 石油
Read the dialogue and complete the notes.
Pollution problems
If the rivers are polluted, ___________
_______________________________.
2. In some places, pollution from factories ____________________________.
farmers can’t use them to water their crops
spreads over cities and villages
3. The cars on the roads _______________
__________________________.
use so much oil and cause pollution
What the students can do
4. Support a green school: every class
_____________ which can be ________
_____________. Then the school
_________________ to help students
________________.
collects waste recycled or used again
sells the waste
in poor areas
5. Students learn ________________
__________________. That means
___________.
ways to save energy and recycle at home
less waste
It’s no use …
Such as …
Nice idea!
1. It’s no use talking about things we
can’t do.
It’s no use doing sth. 做某事没有用处
e.g. It’s no use complaining.
抱怨没有用处。
Listen, George, it’s no use living in
the past.
听着, 乔治, 活在过去是没有用的。
2. Such as ...
such as 这个短语常用来表示举例说明。
e.g. — There are lots of things you could
do. 有很多你们能做的事。
— Such as … 比如说……？
3. That means less waste.
less adj. 较小的; 较少的
n. 较少数; 较少量
less 是 little 的比较级, 指物体的体积或 分量相对于别的物体少。
e.g. The firm has less money and fewer staff than last year.
公司的资金和人员都比去年少了。
4. Though pollution is heavy now, I don’t think it’s hopeless.
hopeless adj. 无望的
e.g. The doctor said the old man’s
condition was hopeless.
医生说这位老人的病是没有希
望的了。
Complete the passage with the correct form of the words in the box.
cause enemy factory
kill oil pollute spread
Pollution is our great ________. Pollution from ________ is a danger to our health, and may even _______ people.
enemy
factories
kill
Factories sometimes ________ the rivers, and farmers cannot use the water for their crops. Pollution _________ over cities and villages, and that _________ even more danger. Cars use a lot of _____ and cause pollution too.
pollute
spreads
causes
oil
Listen and mark the words which the speaker links.
After our lesson on the environment,
I’m worried about the future.
2. Students at a green school also learn
ways to save energy and recycle at
home.
Now listen again and repeat.
List the pollution problems in your place. Choose one problem and say what should be done about it.
— The air pollution in our city is
getting worse. What can we do to
stop it
— I think we can ride our bicycles to
school more.
Write a passage about how to control pollution and how save our earth.登陆21世纪教育 助您教考全无忧
Pollution around us
In recent years o ( http: / / www.21cnjy.com )ur life is becoming better and better. But our environment is becoming worse and worse. It's very bad for our life. Now many people have air-conditioners and cars, they produce (give off ) waste gas. More and more trees are being cut down. There are so much sand on the earth (leaving only sand ) . We often see factories pour waste into rivers or lakes. Water in the river is quite dirty. We haven't enough clean water to drink in cities. 21世纪教育网版权所有
Now we are in dang ( http: / / www.21cnjy.com )er. It's very necessary and important to protect the environment well. I think if everyone tries his best to protect the environment, the world will become much more beautiful, and our life will be better and better .
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Air Pollution
We all know that cl ( http: / / www.21cnjy.com )ean air is important to good health. Wherever you go and whatever you do, you are always surrounded by a sea of gases that we call air. If there are impurities in the air, they may be absorbed by our bodies and make us ill. We need clean air, but unfortunately, air pollution is globally present, especially in cities.
Many large cities ( http: / / www.21cnjy.com ) are anything but pollution-free. Our cities have many factories, which we need to make food, clothing and other things. Every year these factories pour millions upon millions of tons of smog into air. Power plants and houses that burn coal add greatly to air pollution. Besides, there are more cars in cities now. Once out on the streets, they will take in fresh air and replace it with poisonous gases.
Our country is tr ( http: / / www.21cnjy.com )ying hard to prevent and control air pollution. As long as every citizen also realizes its importance and makes join efforts, the day will come soon when people will take in only clean air. Then, the sunlight will no longer be blackened out by smoke and soot.21世纪教育网版权所有
21世纪教育网 www.21cnjy.com 精品资料·第 1 页 （共 1 页） 版权所有@21世纪教育网登陆21世纪教育 助您教考全无忧
Save the world
How to prote ( http: / / www.21cnjy.com )ct the environment becomes one of the biggest problems in the world. We can find that rubbish not only pollutes our environment but also does harms to people’s health. So we should not throw rubbish onto the ground. Some factories are pouring waste water into the rivers, the lakes and the fields. It can make a difference to the environment. It can pollute plant. Sometimes it can kill lots of fish.
We must keep ( http: / / www.21cnjy.com )our environment clean and tidy. We have only one earth. We must try our best to protect her, and keep our home more beautiful and greener.
21世纪教育网 www.21cnjy.com 精品资料·第 1 页 （共 1 页） 版权所有@21世纪教育网(共40张PPT)
Do you live a green life
Resource conservation and pollution reduction
节约资源, 减少污染
Green consumption and green purchase
绿色消费, 环保选购
Repeated use
重复使用，多次利用
Recycling
分类回收，循环再生
Natural protection and co-existence
保护自然，万物共存
Save the earth and save us.
china n. 瓷; 瓷器
bottle n. 瓶
divide n. 分开; 分隔
policy n. 政策; 方针
plastic
n. 塑料
adj. 塑料的
cloth n.
布; 布料
reuse v.
再次使用; 重复利用
reduce v.
减少; 减低; 缩小
recycling n. 回收利用
throw away 扔掉; 丢弃
ton n. 吨
tons of 许多, 很多
rubber n.
橡胶
grandson n.
(外)孙子
granddaughter n.
(外)孙女
rapid adj.
快速的; 迅速的
step n.
步骤; 措施
Look at the pictures. Say which ways are good for the environment and why.
china divide necessary plastic policy reuse
Look at the title of the passage. What suggestions do you think the passage will make Use the words in the box to help you.
It is better to use china cups and bowls because they can be used many times.
Read the passage and answer the questions.
Which ways are good for the environment and why
Check (√) the suggestions that are mentioned in the passage.
Order food that you can finish.
2. Use less electricity at home.
3. Learn ways to recycle rubbish.
4. Use paper cups and paper bags.
5. Repair things.
6. Divide rubbish into different groups.
7. Collect waste or rubbish to raise money.
8. Burn things to save energy.
Find two things you should do and two things you should not do in the passage. Give reasons. Use your answers to write sentences.
We should recycle rubbish because it can help us protect the environment.
1. We throw tons of rubbish away each year, and we have to make a change.
ton n. 吨
tons of 许多, 很多
e.g. We’ve bought tons of beer for the
party tonight.
我们为今晚的聚会买了大量啤酒。
throw away 扔掉; 丢弃
e.g. When are you going to throw away those old magazines
你打算什么时候扔掉那些旧杂志？
He has thrown away a good opportunity.
他已经失去了一个良好的机会。
2. Repeat these three words daily: reduce, reuse and recycle.
repeat v. 重说; 重新做
前缀“re-”, 意思是“再, 重复”
e.g. I repeated after the teacher word by word. 我跟着老师一个字一个字地读。
reuse v. 再次使用; 重复利用
e.g. She often reuses old envelopes. 她经常重复使用旧信封。
The bottles can be reused up to
20 times. 这些瓶子可重复使用达20次。
3. Although it takes energy to change things into something else, it is better than throwing things away or burning them.
change … into …
把……变成……
e.g. You can’t change iron into gold. 你无法把铁变成金子。
4. We cannot hope for rapid change, but let’s take these simple steps today …
take steps 采取措施
e.g. We need to take some steps to reduce pollution.
我们需要采取一些措施了减少污 染。
Complete the passage with the correct form of the words in the box.
We throw away _____ of rubbish every year. If we want a clean world for our grandsons and ______________, we have to reduce, reuse and _______.
divide granddaughter plastic policy rapid recycle repeat step ton
tons
granddaughters
recycle
_______ these three words every day. The first _____ is to use less. The second is to use things as long as possible. Then ______ your rubbish into _______, paper, rubber and glass. Finally, draw up a recycling ______ for your community. We cannot hope for _____ change, but every little bit helps!
Repeat
step
divide
plastic
policy
rapid
Work in pairs. Make a list of things you can do to make your school greener.
Don’t throw bottles away.
Write a passage on how to make your school greener and give reasons. Use the list you have made in Activity 7 to help you. Use because, so and so that.
Don’t throw bottles away because it is better to recycle them.(共52张PPT)
Reuse means “use again”.
Though pollution is heavy now, I don’t think it’s hopeless.
Make a new words. Join the parts of words in Box A with the words in Box B. You need to use some of the parts more than once.
A –able -ful im- -less re- un-
B care collect hope possible use usual wanted waste
collectable, usable, careful, hopeful, useful, wasteful, impossible, careless, hopeless, useless, reuse, unusual, unwanted
Now work in groups. Play the guessing game English for Fun.
full of care ____________
2. can be collected ____________
3. full of hope ____________
4. without any hope ____________
5. not possible ____________
careful
collectable
hopeful
hopeless
impossible
6. not usual ____________
7. without any use ____________
8. use again ____________
9. not wanted ____________
10. making a lot of waste ____________
unusual
useless
reuse
unwanted
wasteful
Sometimes if you know the meaning of the parts of a word, you can work out the meaning of the whole word.
re + new + able;
re = again,
able = can be
renewable = can be new again
1. 合成法
将两个或两个以上独立且语义不同的单词合在一起构成新词的方法叫做合成法。合成法是一种比较灵活的构词方法，可以合成名词、形容词、副词、代词、动词等。例如：afternoon, sportsman, blackboard, sportsperson, newspaper,
airplane, classmate, grandfather 等就是通过合成构词法构成的名词；kind-hearted, middle-aged, hard-working 等为合成形容词；however, maybe, himself, everyone, nothing, overlook 等也都是通过合成法构成的单词。
2. 派生法
通过在词根前面加前缀或在词根后面加后缀构成一个新词的方法叫作派生法。要通过派生法理解和记忆单词, 我们需要掌握常见的前缀和后缀及派生规律。
(1) 常见前缀
前缀 含义 例词
dis- 不 disagree, dislike
en- 使……处于某种状态 enable, enrich
im-, in- 不 impossible, impatient, inexpensive
inter- 在……之间, 相互 international, interconnect
前缀 含义 例词
mis- 错误地 mislead, misunderstand
non- 不, 非 non-smoker, non-native
re- 再, 重复 rewrite, retell
un- 不 unable, unhappy, unpopular
(2) 常见后缀
后缀 功能 例词
-er, -or
构成名词 teacher, worker, visitor
-ian musician
-ing building, painting, shopping, meaning
-ist artist, scientist
后缀 功能 例词
-ment
构成名词 agreement, government
-ness coldness, happiness, illness
-th truth, warmth
-tion competition, education, information, invitation
-ty activity, safety
后缀 功能 例词
-able, -ible
构成 形容词 comfortable, eatable, enjoyable, possible,
-al environmental, international, national, traditional
-ful careful, helpful, useful
-ive active, expensive
-less careless, helpless, homeless, useless
后缀 功能 例词
-ly 构成
形容词 friendly, lovely, monthly, weekly
-ous dangerous, famous
-teen
构成数词 eighteen, fifteen, seventeen
-th fifteenth, fifth, fortieth, seventh
-ty forty, sixty, twenty
-ly 构成副词 badly, carefully, carelessly, happily, quickly
(3) 派生规律
由一个词根加上相应的词缀可以派生出名词、形容词、副词等，掌握派生规律对扩充词汇有很大帮助。例如：
由 interest 可以派生出：
uninteresting
interest — interesting — interestingly
interested — uninterested
由 help 可以派生出：
helpless — helplessly
help — helpful — helpfully
由 able 可以派生出：
enable
able unable
ability
disable
3. 转化法
英语构词法中把一种词性转化为另一种词性而词形不变的方法称作转化法。常见的转化有：
(1) 动词转化为名词
— Let’s talk about it more.
咱们再谈谈这件事吧。
— I think we’d better finish the talk
now. 我想我们最好现在结束谈话。
(2) 名词转化为动词
She gave me a cup of water.
她给了我一杯水。
You should water the flowers twice a
day.
你应该每天给这些花浇两次水。
(3) 形容词转化为名词
She was wearing a black dress.
她穿着一条黑色的裙子。
The girl in black looks very beautiful.
那个穿黑衣服的女孩看上去很漂亮。
Complete the sentences with the words in the box.
hopeful impossible reuse unhealthy wasteful
Polluted water is ____________.
2. It is _________ to throw so much food away.
unhealthy
wasteful
3. If you look after things well, you may ________ some of them later.
4. It is ___________ to clean up the whole river in such a short time.
5. If we pay attention to pollution now, the future will be __________.
reuse
impossible
hopeful
Complete the table.
Noun Verb Adjective Adverb
useful/useless
hope hopefully / hopelessly
pollution ——
water —— ——
waste
—— —— usually/
unusually
use
use
usefully/
uselessly
hope
hopeful/hopeless
pollute
polluted/unpolluted
water
waste
wasteful/wasted
wastefully
usual/
unusual
Complete the sentences with the correct form of the words in Activity 3.
She was hopeful that her new job would make her more successful.
The factory ___________ the river, and the fish died.
2. We often walk in the countryside. It is a(n) _______ activity for us.
polluted
usual
3. Do not use so much water. It is very __________.
4. To keep the flowers growing, you need to _________ them once a day.
wasteful
water
Complete the sentences.
A lunchbox is a box that you keep your lunch in.
A ___________ is a card that you write on one side of and send to someone by post.
2. A ___________ is a room where you have classes at school.
postcard
classroom
3. A ___________ is a book that has one or more stories for children.
4. A ____________ is a black board that is used at school for writing on with chalk.
storybook
blackboard
Look at the pictures and answer the questions.
What kinds of things can be recycled
2. How can these things be reused
3. How does this help the environment
4. Have you ever recycled or used things that can be recycled How
Complete the conversation with the correct form of the expressions in the box.
be good for throw away turn off worry about
Mike: I hear you are off to the Caribbean for a holiday! Lucky you! But aren’t you _______________ the pollution that such long plane journey may cause for the environment
Ken: I know, but what can I do about it I’ve already tried my best to protect the environment.
worried about
I recycle. I don’t ____________ things if I don’t want them any more. I ____________ the lights when I leave a room. Don’t tell me I shouldn’t travel by plane any more!
throw away
turn off
Mike: No, of course not. But we can do more to protect the environment. For example, we can help keep the air clean by planting trees. Trees ______________ the environment. In this way, we can reduce the harm of pollution.
are good for
Ken: Good! So I can enjoy my holiday, and when I come back, I’ll plant some trees!
Mike: That’s the idea! Maybe we can all join in and start a small forest!
Listen and check (√) the true
sentences.
1. It is OK to throw used things away. Looking after them takes a lot of time.
2. Do not throw away things made of glass, plastic and paper, but recycle them when possible.
3. Take a bag when you go shopping.
√
√
4. Producing electricity and using oil will not cause pollution.
5. Turn off lights when you do not need them.
6. Ride a bike or walk, and do not often drive your car.
√
√
Listen again and complete the table.
Advice Reasons
1. Don’t throw away things made of _________________
______, but _______ them. Throwing things away is wasteful.
2. __________ your plastic bags when you can and __________ with you when you go shopping. Plastic bags __________ recycle.
glass, plastic and paper
recycle
Reuse
take a bag
are hard to
Advice Reasons
3. Use less electricity and oil to _______________.
4. Don’t leave lights on and _______________.
5. ____________ and do not often drive your car. Producing electricity and using oil may cause ___________.
reduce pollution
waste electricity
Walk or cycle
pollution
Earth Hour
Read the passage and answer the questions.
When is Earth Hour held each year
Earth Hour is held toward the end of March each year.
Why do people switch off the lights during Earth Hour
They do this to show their awareness of climate change.
When and where was the first Earth Hour held
The first Earth Hour was held in 2007 in Sydney.
Which city take part in the event today
More and more cities are taking part in the event, such as Beijing, London, Rome and New York.
Work in groups. Decide what kind of pollution you want to talk about.
Choose a subject that you care about the most. It could be water pollution, air pollution, etc.
Find out more information about your subject. Look it up on a website or in a book.
If you choose air pollution, let’s watch a video about air pollution from a factory.
Do you know PM 2.5 Let’s know more about PM 2.5 and protect the environment from now.
Discuss your subject.
Take turns to say what you think about the problem and what can be done.
Listen to what others say. If you agree with what they have said, say “I agree”. “That’s true” or “That’s a good point”; if you do not agree with what someone says, say “I’m sorry, but I don’t agree. I think that …”
Present your group ideas to the whole class.
