Unit 7 The natural world Assessment 同步分层作业 2026-2027学年译林版英语八年级上册

Unit 7 The natural world Assessment 分层作业 建议用时：30分钟 一、单词汉译英（Assessment：单元综合） 1. 生态系统 ____________ 2. 湿地 ____________ 3. 珊瑚 ____________ 4. 企鹅 ____________ 5. 肾脏 ____________ 6. 肺 ____________ 7. 海绵块 ____________ 8. 氧气 ____________ 9. 有害的 ____________ 10. 防止 ____________ 11. 野生生物 ____________ 12. 平衡的 ____________ 二、短语汉译英（教材原短语） 1. 是……的家园 ____________ 2. 覆盖地球表面71% ____________ 3. 产生约70%的氧气 ____________ 4. 清除 ____________ 5. 减缓气候变化 ____________ 6. 在……中起重要作用 ____________ 7. 约占……的三分之一 ____________ 8. 吸收有害物质 ____________ 三、词形变换（写出下列单词的名词形式） 1. environmental → ____________ 2. harmful → ____________ 3. balanced → ____________ 4. important → ____________ 5. prevent → ____________ 一、单句填空（用括号内单词的正确形式填空） 1. The ocean ____________ (produce) food and oxygen for us. 2. Wetlands ____________ (be) important for wildlife. 3. Forests can ____________ (store) water in the soil. 4. Too much pollution ____________ (harm) the ecosystem. 5. We should ____________ (prevent) people from polluting the water. 二、根据汉语意思完成句子（每空一词） 地球表面约71%被海洋覆盖。 About 71% of the earth's ____________ is covered by the ocean. 湿地是许多稀有鸟类的家园。 Wetlands are ____________ ____________ many rare birds. 森林约占地球陆地面积的三分之一。 Forests ____________ ____________ nearly a third of the earth's land area. 湿地能清除污染并防止洪水。 Wetlands can ____________ ____________ ____________ pollution and prevent floods. 三大生态系统在减缓气候变化中起重要作用。 The big three ____________ an important ____________ in slowing down climate change. 三、句型转换 1. The ocean produces about 70% of the earth's oxygen.（对画线部分提问）____________ ____________ oxygen does the ocean produce? 2. Coral reefs are home to many fish.（改为一般疑问句）____________ coral reefs ____________ to many fish? 3. Forests take in carbon dioxide.（改为否定句）Forests ____________ ____________ in carbon dioxide. 4. Pollution makes the water dirty.（改为否定句）Pollution ____________ ____________ the water dirty. 5. Wetlands are important. We must protect them.（用 so 合并为一句）Wetlands are important, ____________ we must protect them. 四、选词填空（单元综合复习） 【ocean, wetland, forest, harmful, balance】 1. The ____________ produces most of the oxygen on the earth. 2. A ____________ can store water and clean it. 3. Many animals live in the ____________ and eat its leaves. 4. Too much plastic is ____________ to wildlife. 5. We should keep the ____________ of nature. 五、情景补全对话（5个空，6个选项，1项多余） A. What are the big three ecosystems? B. Why should we protect them? C. What can we do at home? D. That is easy to do. E. I will try my best. F. How often do you go swimming? Millie: Simon, we will have a test on Unit 7 tomorrow. 1.____________ Simon: They are oceans, wetlands and forests. Millie: 2.____________ Simon: Because they provide food and homes for millions of animals and plants. Millie: 3.____________ Simon: We can save water, use less paper and tell others about them. Millie: 4.____________ Simon: Yes. Small actions can help a lot. Millie: I hope we can both do well in the test. Simon: 5.____________ Millie: Thank you. Let us work hard together. 拓展提高（课内同源 + 课外同源） Passage1（课内同源：地球的三大生态系统） 　　The natural world is full of ecosystems, and the big three are oceans, wetlands and forests. The ocean is the largest of them. It covers 71% of the earth and produces about 70% of our oxygen. It holds plenty of salt water, and water rises, falls and returns to it. Wetlands cover only 6% of the land, but they are home to 40% of all types of plants and animals. They clean the water and prevent floods. Forests cover nearly a third of the land and trap harmful things in their leaves. In China, Zhalong Nature Reserve protects wetlands for cranes and other wildlife. All these ecosystems keep the earth healthy, so we must take good care of them. 任务一：单项选择 1.How much of the earth does the ocean cover? A.About 6%. B.About 40%. C.About 71%. D.About 20%. 2.What do forests do with harmful things? A.They trap them in their leaves. B.They send them into the sea. C.They turn them into water. D.They give them to animals. 任务二：判断正误(T/F) 3.Wetlands are home to 40% of all types of plants and animals. (　　) 4.Zhalong Nature Reserve protects forests for cranes. (　　) 任务三：简答 5.What do wetlands do for the earth? _______________________________________________________________________________ Passage2（课外同源：海南的红树林） 　　Mangrove forests grow along the coast in warm places. Hainan has some of the best mangroves in China. A mangrove forest is a special ecosystem between the sea and the land. The trees stand in salty water, and their roots hold the soil. They can prevent floods and stop strong winds. Many animals make their homes there. Small fish swim among the roots, and birds build nests in the tall trees. Mangroves also help get rid of pollution in the water. In the past, people cut down many mangroves. Now the government protects them, and visitors come to watch the birds. Mangroves play an important role in keeping the balance of nature. 任务一：单项选择 1.Where do mangrove forests grow? A.In high mountains. B.Along the coast in warm places. C.In the desert. D.On dry grassland. 2.Why are mangroves important to the coast? A.Because they stop strong winds and prevent floods. B.Because they give people fruit. C.Because they are very tall. D.Because they grow in the deep sea. 任务二：判断正误(T/F) 3.Small fish and birds make their homes in mangrove forests. (　　) 4.People are still cutting down mangroves now. (　　) 任务三：简答 5.What do mangroves do to the water? _______________________________________________________________________________ 任务四：单元微写作 以“The Natural World and Us”为题，写一篇短文，不少于6句话，请使用 ecosystem / be home to / harmful / protect 等词汇。 _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ 参考答案 夯实基础 一、单词汉译英 1.ecosystem 2.wetland 3.coral 4.penguin 5.kidney 6.lung 7.sponge 8.oxygen 9.harmful 10.prevent 11.wildlife 12.balanced 二、短语汉译英 1.be home to 2.cover 71% of the earth's surface 3.produce about 70% of the earth's oxygen 4.get rid of 5.slow down climate change 6.play an important role in 7.make up nearly a third of 8.trap harmful things 三、词形变换 1.environment 2.harm 3.balance 4.importance 5.prevention 能力进阶 一、单句填空 1.produces 2.are 3.store 4.harms 5.prevent 二、根据汉语意思完成句子 1.surface 2.home; to 3.make; up 4.get; rid; of 5.play; role 三、句型转换 1.How; much 2.Are; home 3.don't; take 4.doesn't; make 5.so 四、选词填空 1.ocean 2.wetland 3.forest 4.harmful 5.balance 五、情景补全对话 答案：1.A 2.B 3.C 4.D 5.E；多余项：F 拓展提高 Passage1 任务一：1.C 2.A 任务二：3.T 4.F 任务三简答：5.They clean the water and prevent floods. Passage2 任务一：1.B 2.A 任务二：3.T 4.F 任务三简答：5.They help get rid of pollution in the water. 任务四范文：The natural world is our home. Oceans, wetlands and forests are the big three ecosystems. The ocean covers about 71% of the earth and produces most of our oxygen. Wetlands clean the water and prevent floods, and they are home to a lot of wildlife. Forests take in carbon dioxide and trap harmful things. All of them play an important role in keeping the balance of nature. We should protect them and live in a green way. 学科网（北京）股份有限公司 $