1. Mai is talking about types of energy sources now.

(Mai đang nói về các loại nguồn năng lượng.)

Giải thích: Thì hiện tại tiếp diễn dạng khẳng định chủ ngữ Mai số ít => is V-ing

2. We are using solar energy to replace energy from coal today.

(Chúng ta đang sử dụng năng lượng mặt trời để thay thế năng lượng từ than đá ngày nay.)

Giải thích: Thì hiện tại tiếp diễn dạng khẳng định chủ ngữ "we" => are V-ing

3. Keep quiet! The students of Class 7C are taking a test.

(Trật tự! Các học sinh lớp 7C đang làm bài kiểm tra.)

Giải thích: Thì hiện tại tiếp diễn dạng khẳng định chủ ngữ "students" số nhiều => are V-ing

4. Scientists are developing new energy sources to protect the environment.

(Các nhà khoa học đang phát triển các nguồn năng lượng mới để bảo vệ môi trường.)

Giải thích: Thì hiện tại tiếp diễn dạng khẳng định chủ ngữ "scientists" số nhiều => are V-ing

5. We are reducing the use of nuclear energy nowadays.

(Ngày nay chúng ta đang giảm việc sử dụng năng lượng hạt nhân.)

6b

7a

8c

9a

10b

In the modern world, people depend on energy to power their everyday lives. A wide range of power-run devices and modern conveniences (1) are taken for granted, and although it may seem that we will not be in danger of living without those conveniences, the fact is that many supplies of energy are running out rapidly. Scientists are constantly (2) searching for new sources of energy to keep modern society running. Whether future populations will continue to enjoy the benefits of abundant energy will depend (3) on the success of this search. Coal, oil and natural gas are now being used widely. (4) However, not only are supplies of , these supplies are limited, and they are a major source of pollution. Therefore, the existing alternative energy sources must be improved or futher explored and developed. These include nuclear, water, solar, and wind power, as well as energy from new, (5) nonpolluting types of fuels types of fuels. Each of these, however, has advantages and disadvantages.

recycling/ nothing/ list/ vegetables/ something/ save/ trouble/ polluting/ taking. Our environment is in (1)trouble. Modern ways of living and today’s industries are (2)polluting it. Most people think there is (3) nothing they can do. This is not true. Everyone can do something to help (4) save our environment. Here is a (5)list of things you can do.

Our environment is in trouble. Modern ways of living and today’s industries are polluting it. Most people think there is nothing they can do. This is not true. Everyone can do something to help save our environment. Here is a list of things you can do.
- Help to cut pollution by taking the bus to work instead of your car.
- Buy fruit and vegetables that have not been treated with pesticides.
- Recycle all your cans, bottles and paper. There should be a recycling center somewhere near your home, so take them there.

Most of the world’s energy comes from the sun. The sun’s energy is in wood, oil, and other things that people use for energy.

VI. Read the text then answer true or false

People use many sources of energy. Ancient people used only their arms, hands, and simple tools until they discovered fire. Later, people learned to use the energy of the wind to sail ships. Then they learned to use animals to do work. In the eighteenth and nineteenth centuries, people began to use machines. The first machines used steam. They burned coal to heat water. The hot water turned into steam, and the steam engine did the work. Later, people began to use the gasoline engine, and today people are using nuclear energy. Energy is one of the basic concepts, or ideas, of physics. It is the ability to do work. Without energy we could live. We need energy to work, and scientists are always looking for new sources of energy.

1. None of the world’s energy comes from the sun. F

2. Wind, steam, and gasoline are sources of energy. T

3. People have never used nuclear energy. F

4. Energy is the ability to do work. T

5. We need new sources of energy. T

Rewrite the sencond sentences, keeping the meaning unchanged:

1. they will show flying cars to the public when they finish it.

-> Flying cars will be shown to the public when it is finished

2. Tam doesn't type as fast as she used to.

-> Tam used to type faster than she does now

3. We will use sources of energy more effectively for our future.

-> Sources of energy will be used more effectively for our future.

4. We will slove the problem of energy shortage by using solar energy .

-> The problem of energy shortage will be solved by using solar energy .

5. They will replace coal by another renewable sources.

-> Coal will be replaced by another renewable sources.

6. They will use flying car to travel form place to another place.

-> Flying cars will be used to travel form place to another place.

Rewrite the sencond sentences, keeping the meaning unchanged:

1. they will show flying cars to the public when they finish it.

-> Flying cars will be shown to the public when it is finished

2. Tam doesn't type as fast as she used to.

-> Tam used to type faster than she does now

3. We will use sources of energy more effectively for our future.

-> Sources of energy will be used more effectively for our future.

4. We will slove the problem of energy shortage by using solar energy .

-> The problem of energy shortage will be solved by using solar energy .

5. They will replace coal by another renewable sources.

-> Coal will be replaced by another renewable sources.

6. They will use flying car to travel form place to another place.

-> Flying cars will be used to travel form place to another place.

1. Sources of energy will be used more effectively for our future.

2. The problem of energy shortage will be solved by using solar energy.

3. Coal will be replaced by another renewable source.

4. Flying cars will be used to travel form place to another place.

1. We have....panels on the roof at home to catch the sun's energy. (sun) solar

2. I think we should reduce energy...as much as possible. (consume) consumption

3. His class will take a test on...sources of energy. (alter) alternative

4.  Solar energy is.... Moreover, it is clean and safe. (new) renewable

5. Waves will be used as an...friendly energy source. (environment) environmentally

6. We do some things to save energy, but there's always room for... .(improve) improvement

7. Fossil fuels are...energy sources. (new) non-renewable

8. People in...areas have to gather wood to use as fuel. (mountain) mountainous

9. Wind power is...used in my country. (increase) increasingly

10. Hydro power is cheap and... . (plenty) plentiful

11. Solar energy will be used to solve the problem of energy... . (short) shortage

12. There are some...of using coal because it ó non-renewable. (advantage) advantages

Câu 15 có sai gì không bạn

Almost all our energy comes from oil, coal and natural gas. We call them fossil fuels. The earth’s
fossil fuels are running out. What would happen if there were no oil, coal and gas on earth?
Scientists are trying to find and use other alternative sources of energy. We can use energy
from the sun, the wind and the water.
Solar energy is unlimited. It supplies all the energy used to grow plants, to evaporate water for
rain, and to maintain the temperature of the planet. All are necessary for human life. If we’re able to
collect solar energy, we’ll be sure to make good use of this abundant source of power.
Another source of energy from nature is the wind. Wind power is clean and plentiful. Energy
from the wind has been used for centuries to move ships, grind grain, pump water and do other kinds
of work. In more recent time, wind power has been used to generate electricity.
Water can also provide power. For a long time, people have used water to power machines.
Some early uses of water power were to mill grain, saw wood and power machinery for the textile
industry. Today water power is mostly used to generate electricity.
11. We are asking the question “What would happen if there were no oil, coal and gas on earth?” because ___.
A. we are now depending so much on fossil fuels.
B. we are looking forward to seeing great changes.
C. we are looking for other alternative sources of energy.
D. other sources of energy can come from the sun, the wind and the water.
12. Which of the following can NOT be used as alternative sources of energy?
A. coal/gas B. the sun/the water
C. the sun/the wind D. solar energy/nuclear power
13. Centuries ago, people used wind power to ___.
A. maintain the earth’s temperature B. get water from underground
C. grow plants D. generate electricity
14. Up till now, water energy has been used for ___.
A. similar purposes C. the textile industry
B. moving ships D. different purposes
15. The word “plentiful” in line 8 mostly means ___.
A. fresh B. natural C. available D. limited

=> Theo mình thì key :abundant

11. A

12. D

13. B

14. D

15. (Câu này chẳng có từ nào gần nghĩa hoặc dính líu đến nhau gì cả)

We are looking for cheap, clean, and effective sources of energy. These types of energy won’t cause pollution or waste natural resources. It will be provided freely by the sun. One percent of the solar energy that reaches the earth will be enough to provide electricity for the whole population of the world. Solar energy will be used by many countries around the world. Solar panels will be placed on the roofs of houses and other buildings and the sun’s energy will be used to heat water. The energy will be stored for a long time. We hope that by using solar energy the problem of the energy shortage will be solved.

1. What types of energy are we looking for?

 _We are looking for cheap, clean, and effective sources of energy

2. What will we use the sun’s energy for?

 _____ The sun’s energy will be used to heat water

3. How long will the energy be stored?

 __________The energy will be stored for a long time

Change into passive voice:

1.we will reduce the use of the electricity to save energy.

_=>The use of the electricity will be reduced to save energy__________________________________

2.will we use public transport?

Will public transport be used ?____________________________________

3.why do we call the wind and the sun's alternative sources of energy?

__Why is the wind and the sun's alternative sources of energy called by us ?__________________________________

4.our country will develop alternative sources of energy

=>_alternative sources of energy will be developed by our country___________________________________

5.another renewable resource will replace coal

__Coal will be replaced by another renewable resource__________________________________