Unit 1 The Changing World Section B 同步练习 2026-2027学年英语人教版九年级上册

**基本信息** 初中英语新授课同步练，以"基础巩固-能力提升-拓展探究"分层设计，构建词汇→句型→语篇的语言能力进阶路径，融合新情境培养思维品质与文化意识。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |基础过关|核心词汇（如population growth）、基础语法（现在完成时、被动语态）|汉译英、首字母填空等题型夯实语言基础，聚焦单一知识点应用| |能力提升|语法综合运用（时态辨析、被动语态转换）、语篇理解|新情境完形填空（城市变迁）、阅读理解（人口增长），培养分析推断能力| |拓展探究|综合语言输出、逻辑组织|语法填空（环境变化）与书面表达（家乡变化书信），提升跨文化沟通与综合语用能力|

Unit 1 The Changing World Section B 同步练习 （2026-2027学年新教材英语人教版九年级上册） 基础过关 一、汉译英。 1. 人口增长 ___________________________ 2. 越来越多 ___________________________ 3. 导致 ___________________________ 4. 被用来改善环境 ___________________________ 5. 随着时间的推移 ___________________________ 6. 发展中国家 ___________________________ 7. 采取行动 ___________________________ 8. 处于危险之中 ___________________________ 9. 发生巨大变化 ___________________________ 10. 对……产生影响 ___________________________ 二、根据句意及首字母提示填写单词。 11. The world's p______ has grown to over 8 billion now. 12. With the development of industry, air p______ has become a serious problem. 13. More and more people are moving to c______ to find jobs. 14. We need to take a______ to protect our earth. 15. O______ time, the small village has turned into a big city. 16. Many d______ countries are developing rapidly these years. 17. The river has been p______ by the factories nearby. 18. The government is trying to s______ the problem of traffic jams. 19. It's reported that the number of wild animals is d______ quickly. 20. The Internet has c______ the way we communicate with each other. 三、用括号中所给词的适当形式填空。 21. The population of the city ______ (increase) by 10% in the past five years. 22. Many new buildings ______ (build) in our town since 2020. 23. The river ______ (pollute) by the waste water from factories. 24. We ______ (take) action to save the endangered animals so far. 25. Over the years, the small town ______ (change) a lot. 26. More and more trees ______ (plant) to protect the environment every year. 27. The problem of air pollution ______ (become) more and more serious recently. 28. I ______ (not see) my old friend since we graduated from middle school. 29. With the help of science, our lives ______ (improve) greatly. 30. It is said that the number of cars ______ (rise) quickly in the last decade. 四、根据汉语意思完成英语句子。每空一词（含缩写词）。 31. 世界人口已经增长到80多亿。 The world's population ____ ____ to over 8 billion. 32. 这条河已经被工厂的废水污染了。 The river ____ ____ ____ by the waste water from factories. 33. 我们已经采取行动来保护濒危动物。 We ____ ____ action to protect the endangered animals. 34. 随着时间的推移，这个小村庄变成了一座大城市。 ____ ____, the small village turned into a big city. 35. 空气污染对人们的健康有很大影响。 Air pollution ____ a great ____ on people's health. 五、按要求完成下列各题。每空一词（含缩写词）。 36. The population of China has reached 1.4 billion.（对画线部分提问） ____ ____ the population of China? 37. We have planted thousands of trees in the past three years.（改为被动语态） Thousands of trees ____ ____ ______ in the past three years. 38. The government has solved the problem successfully.（改为否定句） The government ____ ____ the problem successfully. 39. Has the city changed a lot over the years?（作出肯定回答） ____, ____ ______. 40. People have built many new schools in the countryside.（改为被动语态） Many new schools ____ ____ ______ in the countryside. 能力提升 一、单项选择。 ( ) 1. — ______ has the population of your city grown? — It has grown to 5 million in the past ten years. A. How much B. How many C. What D. How ( ) 2. Over the past years, great changes ______ in my hometown. A. have taken place B. took place C. take place D. will take place ( ) 3. The river ______ by the factories nearby, and now it's not clear any more. A. pollutes B. is polluted C. was polluted D. has been polluted ( ) 4. — Have you ______ taken action to protect the environment? — Yes, we have planted many trees. A. ever B. never C. yet D. already ( ) 5. ______ time goes by, we realize how important it is to protect our earth. A. With B. As C. For D. On ( ) 6. The number of wild animals ______ smaller and smaller because of pollution. A. become B. is becoming C. are becoming D. becomes ( ) 7. We should take action ______ the problem of air pollution. A. solve B. solving C. to solve D. solved ( ) 8. — ______ has your uncle lived in this city? — For over twenty years. A. How soon B. How long C. How often D. How far ( ) 9. Many new roads ______ in our city since 2018. A. are built B. were built C. have been built D. will be built ( ) 10. The Internet ______ our lives a lot. We can communicate with others easily now. A. changed B. has changed C. changes D. will change 二、完形填空。 【新情境·城市变迁】When I was a child, my hometown was a small village. There 11. ____ only one narrow road in the village. People lived in small houses made of wood. The air was fresh, and the river was clean. We could 12. ____ fish in the river and climb mountains on weekends. Over the years, great changes 13. ____ place in my hometown. Now, the narrow road has turned into a wide street with many tall buildings on both sides. More and more people have moved here from other places, so the population has 14. ____ a lot. Many new factories have been built, which has brought more jobs 15. ____ people. 16. ____, the environment has also been affected. The river is not as clean as before, and sometimes the air is not fresh 17. ______. The government has realized the problem and 18. ____ action to improve the environment. They have planted more trees and built some parks. They also stop factories from pouring waste water into the river. I hope my hometown will become 19. ____ beautiful in the future. It will be a good place 20. ______ people to live in. ( ) 11. A. is B. was C. are D. were ( ) 12. A. catch B. catches C. caught D. catching ( ) 13. A. take B. took C. have taken D. will take ( ) 14. A. increased B. decreased C. fallen D. dropped ( ) 15. A. for B. to C. with D. of ( ) 16. A. But B. However C. So D. And ( ) 17. A. any more B. no more C. not more D. any longer ( ) 18. A. takes B. took C. has taken D. will take ( ) 19. A. much B. more C. most D. the most ( ) 20. A. for B. to C. with D. as 三、阅读理解。 The World's Population Growth The world's population has grown rapidly over the past few centuries. In 1800, the world's population was about 1 billion. By 1900, it had reached 1.6 billion. In 2000, the population hit 6 billion, and now it's over 8 billion. Why has the population grown so fast? One reason is that medical care has improved. People are living longer than before. Another reason is that more babies are born and survive. In the past, many children died from diseases, but now they can get good treatment. However, rapid population growth causes many problems. For example, there is not enough food for everyone. Many people don't have clean water to drink. Also, more people mean more pollution, which is bad for the environment. Some countries have taken steps to control population growth. For example, China carried out the one-child policy in the past. Now, many countries encourage people to have fewer children. They also try to improve food production and provide clean water for more people. ( ) 21. What was the world's population in 1800? A. About 1 billion. B. 1.6 billion. C. 6 billion. D. Over 8 billion. ( ) 22. Why has the population grown so fast? A. Because people have more children. B. Because medical care has improved and more babies survive. C. Because people move to cities. D. Because food production has increased. ( ) 23. Which problem is caused by rapid population growth? A. Enough food for everyone. B. Clean water for all. C. More pollution. D. More jobs. ( ) 24. What did China do to control population growth in the past? A. Encouraged people to have fewer children. B. Carried out the one-child policy. C. Improved medical care. D. Increased food production. ( ) 25. What can we learn from the passage? A. The world's population will stop growing soon. B. Rapid population growth is good for the environment. C. Countries are trying to solve the problems caused by population growth. D. People don't need to worry about population growth. 四、补全短文。阅读短文，根据短文内容，从其后所给的六个选项中选出能填入空白处的最佳选项，选项中有一项为多余选项。 【新情境·科技改变世界】Technology has changed the world greatly over the years. 26. ______ It has changed the way we live, work, and communicate. First, technology has made our lives more convenient. We can shop online without going to stores. 27. ______ We can also use smart phones to keep in touch with friends and family anywhere in the world. Second, technology has improved work efficiency. Factories use robots to do dangerous and heavy work. 28. ______ People can work from home using computers, which saves time and money. Third, technology has helped us solve many problems. 29. ______ We can also use technology to predict weather and protect people from natural disasters. However, technology also brings some problems. For example, too much screen time is bad for our health. 30. ______ We need to use technology properly to make our lives better. A. We can learn about the world through the Internet. B. It has become an important part of our lives. C. Also, some people use technology to do bad things. D. Scientists use technology to develop new medicine and treat diseases. E. Machines can produce products faster than humans. F. We can travel to other countries easily by plane. 拓展探究 一、阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。 【新情境·环境变化】1. ____ (Have) you noticed the changes in our environment? Over the past few years, the air 2. ____ (become) more and more polluted. Many factories 3. ______ (pour) waste water into rivers, and the water is not clean any more. People 4. ____ (realize) the importance of protecting the environment. The government 5. ____ (take) action to stop pollution. For example, they 6. ____ (close) some factories that pollute heavily. Also, more trees 7. ____ (plant) every year to make the air fresh. 8. ____ we work together, we can make the environment better. 9. ____ (hope), in the future, we will have a clean world with fresh air and clear rivers. Let's take action from now 10. ______! 二、书面表达。 假如你是李明，你的笔友Tom想了解你的家乡近年来的变化。请你根据以下提示，用英语写一封回信。 提示要点： 1. 过去的家乡：小村庄，道路狭窄，房屋简陋，空气清新，河水清澈； 2. 现在的家乡：高楼林立，道路宽阔，工厂增多，人口增长，但环境受到一些影响； 3. 政府采取的措施：植树造林，建设公园，治理河流； 4. 你的期望：家乡变得更美丽。 要求： 1. 必须包含所给要点，可适当发挥； 2. 语句通顺，意思连贯，语法正确，书写规范； 3. 文中不得出现真实人名、校名或地名； 4. 词数80左右。 ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 参考答案 基础过关 一、汉译英 1. population growth/increase 2. more and more 3. lead to/result in 4. be used to improve the environment 5. over time/with the passage of time 6. developing countries 7. take action 8. be in danger 9. change greatly/great changes have taken place 10. have an effect on 二、首字母填空 11. population 12. pollution 13. cities 14. action 15. Over 16. developing 17. polluted 18. solve 19. decreasing 20. changed 三、适当形式填空 21. has increased 22. have been built 23. has been polluted 24. have taken 25. has changed 26. are planted 27. has become 28. haven't seen 29. have been improved/have improved 30. has risen 四、完成句子 31. has grown/reached 32. has been polluted 33. have taken 34. Over time 35. has; effect/influence 五、句型转换 36. What is 37. have been planted 38. hasn't solved 39. Yes; it has 40. have been built 能力提升 一、单项选择 1. A 2. A 3. D 4. A 5. B 6. B 7. C 8. B 9. C 10. B 二、完形填空 11. B 12. A 13. C 14. A 15. B 16. B 17. A 18. C 19. B 20. A 三、阅读理解 21. A 22. B 23. C 24. B 25. C 四、补全短文 26. B 27. A 28. E 29. D 30. C 拓展探究 一、语法填空 1. Have 2. has become 3. have poured 4. have realized 5. has taken 6. have closed 7. are planted 8. If 9. Hopefully 10. on 二、书面表达（参考范文） Dear Tom, I'm glad to tell you about the changes in my hometown. In the past, it was a small village with narrow roads and simple wooden houses. The air was fresh and the river was clean. We often caught fish there. Now, it has changed a lot. There are many tall buildings and wide streets. More factories have been built, and the population has increased. But the river is not as clean as before, and the air sometimes smells bad. Luckily, the government has taken action. They have planted many trees, built parks, and stopped factories from polluting the river. I hope my hometown will become more beautiful in the future. Yours, Li Ming 学科网（北京）股份有限公司 $