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沪教版英语七年级上册Unit 4 The Earth语法专项练习
一、语法填空（20道）
The Earth is one of the planets ______ go around the Sun.
We should stop ______ (pollute) the environment to protect our home.
There ______ (be) less fresh water on Earth if we waste it.
Many animals are in danger ______ people cut down too many trees.
It's important ______ us to save energy every day.
The teacher told us that the Moon ______ (circle) the Earth.
We can reduce waste ______ reusing and recycling things.
______ you ______ (plant) more trees in the park next weekend
A lot of plastic ______ (throw) into the sea every year.
The students ______ (learn) about the Earth's resources since last week.
If we ______ (not protect) the Earth, our future will be in danger.
The river ______ (become) cleaner since the factory closed.
We must do something ______ (stop) the Earth from getting warmer.
There are many kinds of ______ (energy) such as solar and wind energy.
The Earth ______ (cover) with about 70% water.
My parents often tell me ______ (not waste) electricity.
By the time we arrived, they ______ (start) the project to save the river.
______ (recycle) paper is a good way to protect forests.
The number of wild animals ______ (decrease) in recent years.
We wonder if scientists ______ (find) a new way to clean the oceans soon.
二、根据句意及首字母或汉语提示完成单词（20道）
We should try to r______waste instead of throwing everything away.
The factory has caused a lot of p______ to the river, so no fish can live in it.
Using solar p______ is a good way to save energy.
We must protect the e______ so that we can live a better life.
Many countries are trying to reduce air p______ by limiting car use.
The Earth is our home, so we should take good______(照顾) of it.
______ (回收利用) can help us save a lot of natural resources.
There is not enough ______ (新鲜的) water for everyone in some areas.
People have ______ (污染) the environment in many ways.
We need to find more ______ (可再生的) energy sources.
The government is taking action to protect the ______ (海洋) from plastic waste.
Cutting down too many trees will destroy the natural h______ of many animals.
We should use cloth bags instead of p______ bags to protect the Earth.
The t______ is getting warmer and warmer because of greenhouse gases.
Wind and solar energy are clean and will never r______ out.
We should save every ______ (滴) of water in our daily life.
The ______ (地球) is the only planet where humans can live so far.
Many species of animals are in ______ (危险) of dying out.
Using public transport can reduce air p______.
The students are doing a project on protecting the ______ (环境).
三、用括号内所给词的适当形式填空（20道）
People should stop ______ (cut) down so many trees.
The river ______ (pollute) by the factory last year.
We are trying ______ (save) energy in our daily life.
If we ______ (not act) now, it will be too late.
The Sun gives us light and ______ (hot).
Many animals ______ (lose) their homes because of deforestation.
We can ______ (use) solar power to heat water at home.
My brother ______ (join) an environmental group next month.
The teacher said that the Earth ______ (be) round.
They ______ (work) on the environmental project for three months.
It's important for us ______ (protect) wild animals.
More trees ______ (plant) in the park next spring.
We ______ (have) a meeting about environmental protection tomorrow.
The number of cars ______ (increase) rapidly in recent years.
She suggests ______ (ride) a bike to school instead of taking a car.
The water in this lake ______ (become) much cleaner than before.
If everyone ______ (do) their part, we can make a difference.
We need ______ (reduce) our use of plastic bags.
The environmental problems ______ (discuss) at the meeting yesterday.
By the end of this year, we ______ (finish) the project to clean the park.
四、选择题（20道）
1.The Earth ______ around the Sun.
A. go B. goes C. went D. will go
2.We should try ______ plastic bags when shopping.
A. to use B. not to use C. using D. not using
3.If it ______ tomorrow, we will plant trees in the park.
A. rain B. rains C. will rain D. rained
4.A lot of waste ______ every day in our city.
A. is produced B. produces C. was produced D. produced
5.We have learned about environmental protection ______ two years.
A. since B. for C. in D. on
6.______ is important for us to save water every day.
A. This B. That C. It D. What
7.Many animals ______ if we don't protect them.
A. die B. died C. will die D. have died
8.The teacher told us that the Moon ______ around the Earth.
A. moves B. moved C. will move D. has moved
9.We can ______ waste by reusing and recycling.
A. reduce B. increase C. produce D. find
10.Solar energy is a kind of ______ energy.
A. renewable B. expensive C. harmful D. difficult
11.The river ______ cleaner because people have stopped throwing rubbish into it.
A. becomes B. became C. has become D. will become
12.______ you ______ to join the environmental club
A. Do, want B. Will, want C. Did, wanted D. Are, want
13.The government has made laws ______ protect wild animals.
A. so B. so that C. to D. for
14.By the time we get there, they ______ the work.
A. finish B. finished C. will finish D. will have finished
15.We should avoid ______ too much electricity.
A. use B. using C. to use D. used
16.The Earth ______ by 70% water.
A. covers B. is covered C. covered D. was covered
17.If we ______ more trees, there will be less air pollution.
A. plant B. will plant C. planted D. are planting
18.The students ______ about the importance of protecting the Earth now.
A. learn B. are learning C. learned D. will learn
19.This is the best way ______ we can protect our environment.
A. which B. how C. that D. what
20.______ plastic is bad for the environment because it takes hundreds of years to break down.
A. Reusing B. Recycling C. Using D. Reducing
答案
一、语法填空
1.that 2. polluting 3. will be 4. because 5. for6.circles 7. by 8. Will plant 9. is thrown 10. have learned11.don't protect
12.has become 13.to stop 14.energies15.is covered16.not to waste 17. had started 18. Recycling 19. has decreased 20. will find
二、根据句意及首字母或汉语提示完成单词
1.recycle 2. pollution 3. power 4. environment 5. pollution
6.care 7. Recycling 8. fresh 9. polluted 10. renewable
11.oceans 12. habitat 13. plastic 14. temperature 15. run
16.drop 17. Earth 18. danger 19. pollution 20. environment
三、用括号内所给词的适当形式填空
1.cutting2.was polluted3.to save4.don't act5.heat6.have lost
7. use 8. will join 9. is 10. have worked11.to protect 12. will be planted 13.will have 14.has increased 15. riding16.has become 17. does 18. to reduce 19. were discussed 20. will have finished
四、选择题
1.B 2. B 3. B 4. A 5. B
6.C 7. C 8. A 9. A 10. A
11.C 12. A 13. C 14. D 15. B
16.B 17. A 18. B 19. C 20. C

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