Unit 7 The natural world 语法培优卷 -2025-2026学年译林版（2024）八年级英语上册

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Unit 7 The natural world语法培优卷一、语法过关（20分）A. 用所给单词的适当形式填空（共10小题，每小题1分，满分10分）1. We should try our best ______ (prevent) pollution in wetlands.2. The ocean ______ (cover) about 71% of the earth's surface.3. Many desert plants can ______ (store) water in their leaves.4. Too much plastic waste ______ (harm) the ocean ecosystem.5. Forests are important because they ______ (take in) carbon dioxide.6. The government ______ (create) more nature reserves last year.7. It's ______ (luck) that scientists are working hard to save coral reefs.8. Wetlands act like the earth's ______ (kidney) to clean water.9. People must stop ______ (cut) down trees to protect forests.10. The documentary shows how ______ (careful) animals live in grasslands.B. 句型转换（共5小题，每小题2分，满分10分）1. The ocean provides food for many sea animals.（改为同义句）The ocean ______ many sea animals ______ food.2. We should protect ecosystems.（改为被动语态）Ecosystems ______ ______ protected by us.3. Forests are important because they produce oxygen.（对划线部分提问）______ ______ forests important?4. The desert is dry, so some plants store water.（改为同义句）Some plants store water ______ the desert is dry.5. The idea sounds great.（改为感叹句）______ ______ the idea sounds!二、词汇过关（20分）A. 选词填空，从方框中选择合适的单词，并用其正确形式填空（共10小题，每小题1分，满分10分）balance oxygen surface pollution ecosystemprevent store support harmful protect1. The ocean produces about 70% of the earth's ______.2. We must take action to ______ the environment from being destroyed.3. Plastic waste is ______ to sea life in the ocean.4. Wetlands can ______ floods by storing water during heavy rains.5. The forest is a complex ______ with many plants and animals.6. The earth's ______ is covered by 71% water and 29% land.7. Plants in wetlands help get rid of ______ and keep the water clean.8. It's important to keep the ______ of nature to avoid climate change.9. The soil can ______ water and give it to plants when they need it.10. Coral reefs ______ thousands of sea creatures in a small area.B. 用所给单词的适当形式填空（共10小题，每小题1分，满分10分）1.The ______ (nature) world is full of wonderful ecosystems.2.We should use ______ (environment) friendly products to reduce pollution.3.The ______ (hot) in deserts can reach over 40℃ during the day.4.Many ______ (science) are working hard to protect coral reefs.5.The ______ (deep) of the ocean can be more than 10,000 meters.6.The ______ (pollute) of the river has killed many fish.7.It's ______ (danger) to throw plastic bags into the sea.8.The ______ (protect) of forests is important for our future.9.The ______ (live) things in an ecosystem depend on each other.10.We need to learn more about the ______ (important) of wetlands.三、单项选择（共15小题，每小题1分，满分15分）1. ______ ecosystem includes both living and non-living things.A. A B. An C. The D. /2. Forests ______ carbon dioxide and produce oxygen.A. take off B. take in C. take out D. take up3. Wetlands are called the “kidneys” of the earth ______ they clean the water.A. because B. so C. but D. or4. The ocean ______ 71% of the earth's surface.A. covers B. covers with C. is covered D. is covered with5. We should ______ plastic bags to protect the ocean.A. use more B. stop using C. keep using D. start using6. Some desert animals get water ______ plants.A. to B. from C. with D. for7. The temperature in deserts ______ a lot between day and night.A. changes B. changes with C. changes into D. changes for8. ______ is a big problem for coral reefs.A. Pollution B. Pollute C. Polluted D. Polluting9. We can ______ the beach to keep it clean.A. clean up B. put up C. pick up D. look up10. The government has made laws ______ protect wetlands.A. help B. to help C. helping D. helped11. Oceans, wetlands and forests are ______ main ecosystems on earth.A. three B. the three C. third D. the third12. Plants in wetlands help ______ pollution.A. get rid of B. get on with C. get up D. get off13. ______ it is raining heavily, wetlands can store water like sponges.A. When B. Before C. After D. Until14. We should encourage people ______ part in protecting ecosystems.A. take B. taking C. to take D. took15. The ocean is ______ the “heart” of the earth because it circulates water.A. called B. calling C. to call D. call四、完成句子（共5小题，每小题3分，满分15分）1. 湿地能像海绵一样储存雨水。Wetlands can ______ rainwater ______ giant sponges.2. 大约 40% 的动植物生活在湿地中。About 40% of plants and animals ______ ______ wetlands.3. 我们必须采取行动阻止海洋污染。We must ______ ______ to prevent ocean pollution.4. 森林被称为 “地球之肺”，因为它们能净化空气。Forests ______ ______ "the lungs of the earth" because they clean the air.5. 人类活动正在破坏生态系统的平衡。Human activities are ______ ______ ______ of ecosystems.五、语法选择（共10小题，每小题1分，满分10分）Rainforests are important ecosystems on earth. They 1 about 6% of the earth's land area, but half of the world's plants and animals live there. The trees in rainforests 2 a lot of carbon dioxide and produce oxygen, which is good for the air. However, rainforests are in 3 . Many people cut down trees to make space for farms and buildings. This 4 the homes of animals and plants. 5 , the climate is also changing, which makes rainforests drier.What can we do to 6 rainforests? First, we can use less paper to reduce the need for cutting trees. Second, we can 7 others about the importance of rainforests. Third, we can support companies that protect rainforests 8 of destroying them. Protecting rainforests is important for 9 . If we don't act now, many plants and animals will disappear forever. Let's work together to keep rainforests 10 .1. A. cover B. take C. make D. get2. A. give out B. take in C. put off D. set up3. A. safety B. danger C. control D. order4. A. protects B. builds C. destroys D. improves5. A. Also B. But C. Or D. So6. A. harm B. damage C. protect D. waste7. A. teach B. learn C. hear D. see8. A. because B. instead C. lots D. full9. A. nothing B. everything C. someone D. everyone10. A. dangerous B. healthy C. dirty D. empty六、语法填空（共10小题，每小题1分，满分10分）阅读下面短文，按照句子结构和上下文连贯要求，在空格处填入一个适当的词或使用括号中的词语的正确形式填空。 Wetlands are amazing ecosystems. They cover only about 6% of the earth's land area, 1 they are home to 40% of the world's plants and animals. Wetlands 2 (call) the "kidneys" of the earth because they help clean the water. Plants in wetlands can get rid 3 pollution, making the water fresh. During heavy rains, wetlands store water like giant sponges. This helps 4 (prevent) floods. Many birds live in wetlands all year round, while some go there 5 (spend) the winter. For example, Zhalong Nature Reserve in China is 6 important home for red-crowned cranes. However, wetlands are facing problems. Some people want to make wetlands 7 (small) to build farms. This 8 (leave) less space for wildlife. To protect wetlands, governments have made laws. We can also help by 9 (keep) wetlands clean and telling others about their importance. Wetlands are important for 10 (we) and the planet. Let's protect them together!七、补全对话（共10小题，每小题1分，满分10分）从选项中选择合适的句子，补全对话。其中有两项多余。Amy: Hi Daniel, 1 ?Daniel: Yes! It includes all living and non-living things in an area. 2 .Amy: That's cool. 3 ?Daniel: Because they clean water and provide homes for wildlife. 4 .Amy: 5 ? I saw a report about it.Daniel: Yes, it's a famous wetland in Heilongjiang. 6 .Amy: But I heard 7 . What's the problem?Daniel: Some people want to build farms there. 8 .Amy: 9 ?Daniel: 10  and tell others to protect wetlands.Amy: Good idea! Let's start now.A. What can we do to help?B. It's home to many rare birds.C. How large is Zhalong Nature Reserve?D. Why are wetlands important?E. I learned about ecosystems in class.F. They also help prevent floods.G. Many animals are losing their homes.H. We should stop polluting them.I. Have you heard of Zhalong?J. Do you know what an ecosystem is?K. The water there is getting dirty.L. Let's join a clean-up project.