UNIT 11
OUR GREENER WORLD
A. PHONETICS
I. Decide whether the bold syllables are stressed (S) or unstressed (U).
1. Plastic bags are a big environmental hazard.
2. We need to develop greener products.
3. It’s a good idea to recycle household waste.
4. The environment is a popular topic these days.
5. There is a severe water shortage in parts of Africa.
II. Underline the stressed syllables.
1. Coal is a finite resource.
2. We are planting trees in the park.
3. The shortage of energy is the problem.
4. It’s our duty to save water.
5. This machine runs on solar power.
B. VOCABULARY
I. Complete the sentences using the words or phrases in the box.
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reusing charity glass rubbish plastic bag
recycling bins reduce survey exchange fairs
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1. They have _______ for old bottles and cans.
2. Do you want me to pour you a _______ of water?
3. We can make a nice flower vase by _______ this plastic bottle.
4. I’d like to _______ this dress for one in a smaller size.
5. They will exhibit their new designs at the trade _______ this spring.
6. A good way to _______ air pollution is using less cars.
7. They went on a ten-kilometre walk to raise money for _______ .
8. Some people just dump their _______ in the river.
9. We should do a _______ on how people use energy.
10. It takes 1,000 years for a _______ to degrade in a landfill.
II. Choose the best answers to complete the sentences.
1. This shopping bag is not _______, so I can buy it.
A. cheap B. simple C. expensive D. green
2. _______ materials are good for our environment.
A. Expensive B. Natural C. Polluted D. Fresh
3. Sewage from the factories is the main cause of _______ in this river.
A. soil pollution B. air pollution
C. water pollution D. noise pollution
4. Reusable bags are better for the environment than _______ ones.
A. plastic B. rubbish C. shopping D. paper
5. I turned off the electric fan to _______ electricity.
A. reuse B. save C. recycle D. reduce
6. Alan gave me a _______ bottle when I finished jogging.
A. air B. plant C. soil D. water
7. You should _______ things that can be recycled in a recycling bin.
A. put B. cut down C. decorate D. throw away
8. Most books and notebooks are made of _______.
A. plastic B. wood C. paper D. rubber
9. They _______ empty cans into new window frames.
A. recycle B. reduce C. swap D. reuse
10. You should give your old clothes to those _______.
A. for fun B. for good C. in use D. in need
C. GRAMMAR
I. Fill in the blank with a, an or the.
1. Victoria is _______ animal lover.
2. I have _______ idea about reusing old things.
3. There is _______ used glass on the coffee table.
4. Her father is _______ environmentalist.
5. Today is _______ first day of our holiday.
6. She’s delivering _______ speech about greenhouse effect.
7. Are you going to _______ beach this Sunday morning?
8. Recycle Club is _______ organisation for students to help our environment.
9. They are staying at _______ five-star resort in Da Nang.
10. Is he staying at _______ Furama resort in Da Nang?
II. Write the correct form of the verbs in brackets.
1. The air _______ (not be) so polluted if people _______ (not drive) too many cars.
2. What _______ you _______ (do) if you _______ (see) somebody litter?
3. If we _______ (keep) using oil, we _______ (run) out of it soon.
4. Bella _______ (harm) the environment if she _______ (not reuse) her old items.
5. I _______ (buy) recycled bags if they _______ (not cost) much.
6. _______ it _______ (be) better if Carlos _______ (go) to school by bus?
7. We _______ (save) more trees if we _______ (use) paper economically.
8. If there _______ (be) flood, many people _______ (lose) their homes.
9. If he _______ (give) his old clothes to charity, he _______ (help) people in need.
10. Wild animals _______ (die) if people _______ (continue) destroying their habitats.
III. Combine the sentences using conditional sentence type 1 and the words given.
1. Factories dump waste into rivers. A lot of fish die.
If
2. People keep using plastic bags. Oceans are full of plastic garbage.
If
3. They go to work by taxi. They don’t save a lot of money.
They won't
4. People build too many houses. Land for farming decreases.
Land for farming
5. The Earth becomes hotter. The polar ice cap melts.
If
6. You don’t write on both sides. You waste your paper.
You
7. We use recycled products. We won't harm the environment.
We
8. People breathe polluted air. They suffer from lung diseases.
If
9. The residents don’t often cycle. There is too much air pollution in this area.
There
10. Those companies will receive good feedbacks. They produce reusable bags.
If
IV. Choose the best answers to complete the sentences.
1. I’ve finished _______ my homework and I’m going to _______ bed now.
A. the - 0 B. 0 - 0 C. the - the D. a - a
2. Daisy will become ‘greener’ if she _______ a reusable shopping bag.
A. carry B. carries C. will carry D. carried
3. What will you do if you _______ someone throwing trash on the street?
A. can see B. will see C. see D. saw
4. If we _______ more plants, we _______ soil pollution.
A. will grow - reduce B. grew - will reduce
C. grow - will reduce D. are growing - will reduce
5. If you bring water bottles to a picnic, what type of bottles _______?
A. do you bring B. should you bring C. are you bringing D. you will bring
6. Solar panels are _______ example of _______ renewable energy technologies.
A. an - a B. the - the C. the - a D. an - 0
7. _______ method of transportation has _______ major effect on _______ environment.
A. The - a -the B. A - a - an C. The - the - the D. 0 - a - an
8. If students _______ to school by bus, there _______ less traffic.
A. go - will be B. will go - is C. will go - will be D. go - is
9. _______ your food in a reusable box if you bring it to school?
A. Will you not put B. You won’t put C. You will put D. Will you put
10. Is it true that _______ water conducts heat faster than _______ air?
A. the - an B. a - an C. the - the D. 0 - 0
V. Choose the word of phrase that needs correcting.
1. If we don’t use recycled paper, we will save a lot of trees.
A B C D
2. Streets will be cleaner if people puts trash in a trash bin.
A B C D
3. People can have breathing problems if they will breathe polluted air.
A B C D
4. If she doesn’t use plastic bags, she will help to reduce a plastic waste.
A B C D
5. If plastic waste is thrown away, it will be dangerous for environment.
A B C D
D. SPEAKING
I. Put the sentences in the correct order to make a conversation.
___ You want to keep them, don’t you?
___ Why do you want to reuse them? They are very cheap, and it’s easy to buy the brand new ones.
___ I’m folding plastic bags.
___ Because we will help the environment if they are reused. Plastic bags are very dangerous for living things!
___ I see. I have an idea. We should also keep plastic water bottles.
___ OK.
1 What are you doing, Naomi?
___ Good idea. There is one in the fridge. Let’s go and take it.
___ Yes, I do. These bags are still new, so I can use them again.
II. Write the questions for the underlined words.
1. I use recycled items because I want to save the environment.
2. Everybody should reduce waste and reuse plastic bags.
3. No. My parents don’t grow vegetables at home.
4. There are two electric fans in my room.
5. I turn off the lights when I leave my classroom.
6. He swapped his old novels with his cousins.
7. Yes. There is a recycling bin in my house.
8. You can buy reusable bags at the check-out desk.
E. READING
I. Read the passage and answer the questions.
We know that we will pollute the environment if we do not use materials wisely. People have founded many programmes to save materials and protect the environment. 3Rs is one of them. 3Rs stands for Reduce, Reuse and Recycle.
Reducing means we reduce the amount of waste we produce. This is the best way to help the environment. If we do not reduce the waste, we will pollute our environment more seriously.
Reusing is using the items again. For example, plastic bags can be reused if it is still new. We should not throw away reusable things but store and use them for other purposes.
Recycling is changing the waste materials into new products. For example, we recycle waste paper to make carton boxes. We should recycle as many things as possible.
If we reduce, reuse and recycle our resources, we will save energy and money. Moreover, we will help to prevent pollution and global climate change.
1. What will happen if people do not use materials wisely?
2. What does 3Rs stand for?
3. What does “reducing” mean?
4. What will happen if we do not reduce the waste?
5. What is “reusing”, and “recycling”?
6. Should we throw away reusable things?
II. Fill in each blank with a word in the box.
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harmful solar reduce energy use walk products serious
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Have you ever thought of how to reduce pollution? Here are 5 easy ways:
- Use public means of transportation. We shouldn’t use cars to go to nearby places, but (1) _______, ride a bicycle or take a bus. It is one of the best ways to (2) _______ pollution.
- Use green energy. We should use renewable energy such as (3) _______ energy and wind.
- Turn off lights, computers and all other electric devices when they are not in (4) _______ . If we do so, we will save a lot of (5) _______ and money.
- Be careful with the rubbish we throw away every day because they cause (6) _______ pollution. We should not throw rubbish into lakes, rivers and seas.
- Use environmentally friendly (7) _______ . We should use reusable bags and bottles instead of plastic ones. Plastic waste is (8) _______ to the environment.
F. WRITING
I. Write conditional sentences type 1 using the prompts given.
1. we/ breathe in/ polluted air/ we/ get/ sick.
2. Daniel/ see/ rubbish/ on the streets/ he/ pick/ it/ up.
3. she/ not/ use/ water/ she/ close/ the water tap.
4. his friends/ like/ his books/ he/ swap/ the books/ with them.
5. I/ go shopping/ this evening/I/ buy/ some/ recycled bags.
6. we/ find/ creative ways/ to use energy/ we/ save/ a lot of/ money.
7. they/ invite/ me/ to join/ 3Rs club/I/ be/ very glad.
8. you/ spend/1.5 hour/ on Facebook/ every day/ you/ waste/ 7 months/ in 10 years.
II. Complete the second sentence so that it means the same as the first one.
1. It's forbidden to throw garbage there.
You mustn’t
2. Stop polluting the lake, or the fish will die.
If we don’t
3. Reducing plastic waste is helpful for our life.
We should
4. Because we don’t recycle paper, we don’t save lots of trees.
If we
5. Scientists advise not using too many plastic containers.
People shouldn’t
6. I don’t think bicycling will pollute the air.
I think bicycling
7. Don’t waste oil, or it will run out soon.
If people
8. Cities are convenient, but the air in cities is polluted.
Although
ĐÁP ÁN
A. PHONETICS
I. l. U-S-S 2. S-U-S 3. S-U-S 4.U-S-U 5.U-U-S
II. 1. Coal is a finite resource.
2. We are planting trees in the park.
3. The shortage of energy is the problem.
4. It’s our duty to save water.
5. This machine runs on solar power.
B. VOCABULARY
I. 1. recycling bins 2. glass 3. reusing 4. exchange 5. fairs
6. reduce 7. charity 8. rubbish 9. survey 10. plastic bag
II. l. C 2. B 3. C 4. A 5. B 6. D 7. A 8. C 9. A 10. D
C. GRAMMAR
I. 1. an 2. an 3. a 4. an 5. the 6. a 7. the 8. an 9. a 10. the
II. 1. won’t be - don’t drive 2. will... do - see 3. keep - will run 4. will harm - doesn’t reuse
5. will buy - don’t cost 6. Will... be - goes 7. will save - use 8. is - will lose
9. gives - will help 10. will die - continue
III. 1. If factories dump waste into rivers, a lot of fish will die.
2. If people keep using plastic bags, oceans will be full of plastic garbage.
3. They won’t save a lot of money if they go to work by taxi.
4. Land for farming will decrease if people build too many houses.
5. If the Earth becomes hotter, the polar ice cap will melt.
6. You will waste your paper if you don’t write on both sides.
7. We won’t harm the environment if we use recycled products.
8. If people breathe polluted air, they will suffer from lung diseases.
9. There will be too much air pollution in this area if the residents don’t often cycle.
10. If those companies produce reusable bags, they will receive good feedbacks.
IV. l. B 2.B 3. C 4.C 5.B 6. D 7. A 8. A 9. D 10. D
V. 1. A (use) 2. B (put) 3. C (breathe) 4. D (a) 5. D (the environment)
D. SPEAKING
I. - What are you doing, Naomi?
- I’m folding plastic bags.
- You want to keep them, don’t you?
- Yes, I do. These bags are still new, so I can use them again.
- Why do you want to reuse them? They are very cheap, and it’s easy to buy the brand new ones.
- Because we will help the environment if they are reused. Plastic bags are very dangerous for living things!
- I see. I have an idea. We should also keep plastic water bottles.
- Good idea. There is one in the fridge. Let’s go and take it.
-OK.
II. 1. Why do you use recycled items?
2. Who should reduce waste and reuse plastic bags?
3. Do your parents grow vegetables at home?
4. How many electric fans are there in your room?
5. When do you turn off the lights?
6. Who did he swap his old novels with?
7. Is there a recycling bin in your house?
8. Where can I/ we buy reusable bags?
E. READING
I. 1. We will pollute the environment if we do not use materials wisely.
2. 3Rs stands for Reduce, Reuse and Recycle.
3. Reducing means we reduce the amount of waste we produce.
4. If we do not reduce the waste, we will pollute our environment more seriously.
5. “Reusing” is using the items again, and “recycling” is changing the waste materials into new products.
6. No, we shouldn’t. We should store and use them for other purposes.
II. 1. walk 2. reduce 3. solar 4. use
5. energy 6. serious 7. products 8. harmful
F. WRITING
I. 1. If we breathe in polluted air, we will get sick.
2. If Daniel sees rubbish on the streets, he will pick it up.
3. If she doesn’t use water, she will close the water tap.
4. If his friends like his books, he will swap the books with them.
5. If I go shopping this evening, I will buy some recycled bags.
6. If we find creative ways to use energy, we will save a lot of money.
7. If they invite me to join 3Rs club, I will be very glad.
8. If you spend 1.5 hour on Facebook every day, you will waste 7 months in 10 years.
II. 1. You mustn’t throw garbage there.
2. If we don’t stop polluting the lake, the fish will die.
3. We should reduce plastic waste.
4. If we recycle paper, we will save lots of trees.
5. People shouldn’t use too many plastic containers.
6. I think bicycling won’t pollute the air.
7. If people waste oil, it will run out soon.
8. Although cities are convenient, the air in cities is polluted.