Unit 13 Section A Grammar Focus同步练习 2025-2026学年人教版（2012）英语九年级全册

Unit 13 We're trying to save the earth! Section A (Grammar Focus)   一、用单词的正确形式填空。 1. We're trying __________ (save) the earth. 2. The river used to __________ (be) so clean. 3. The air is badly __________ (pollute). 4. No scientific studies __________ (show) that shark fins are good for health yet. 5. We should help __________ (save) the sharks. 二、根据首字母或句意提示写出单词。 1. We're trying to s__________ the earth from pollution. 2. The river used to be so clean, but now it's p__________. 3. Many people f__________ that saving the earth begins with small things. 4. You can save electricity by t__________ off the lights when you leave a room. 5. Instead of driving, you could r__________ your bike or walk. 三、单项选择。 ( ) 1. We're trying ______ the earth. A. save  B. to save  C. saving ( ) 2. The river used to ______ so clean. A. be  B. being  C. been ( ) 3. The air is badly ______. A. pollute  B. polluted  C. polluting ( ) 4. No scientific studies ______ that shark fins are good for health. A. have shown  B. has shown  C. had shown ( ) 5. We should help ______ the sharks. A. save  B. to save  C. Both A and B ( ) 6. ______ you ever taken part in an environmental project? A. Did  B. Have  C. Has ( ) 7. I helped with a Clean-Up Day last year. It was ______ the biggest clean-up project. A. consider  B. considered  C. considering ( ) 8. More than 1,000 people ______ to help out. A. come  B. came  C. coming ( ) 9. We can't afford ______ any longer to take action. A. wait  B. to wait  C. waiting ( ) 10. Many forget that saving the earth ______ with small things. A. begin  B. began  C. begins 四、选词填空（从方框中选择合适的词填空，每词限用一次）。 can could should must might 1. People __________ think that big things need to be done to save the earth. 2. You __________ save electricity by turning off the lights when you leave a room. 3. You __________ also use reusable bags instead of plastic bags. 4. If it's far, you __________ take the bus. 5. All these small things __________ add up and become big things that __________ improve the environment. 五、根据汉语意思完成句子。 1. 我们正在努力拯救地球。 We're __________ to __________ the earth. 2. 这条河过去如此干净。 The river __________ to be so __________. 3. 空气被严重污染了。 The air is badly __________. 4. 我们应该帮助拯救鲨鱼。 We __________ help __________ the sharks. 5. 许多人都忘记拯救地球始于小事。 Many __________ that saving the earth __________ with small things. 六、补全对话。 根据对话内容，从方框中选择恰当的句子补全对话，其中有一项多余。 A: Have you ever taken part in an environmental project? B: 1.__________ I helped with a Clean-Up Day last year. A: 2.__________ B: It was considered the biggest clean-up project this city has ever had. A: 3.__________ B: I think more than 1,000 people came to help out. A: 4.__________ B: Yes, everyone in this city is trying to improve the environment. A: 5.__________ B: We can't afford to wait any longer to take action! A. That's fantastic! B. How many people took part? C. Yes, I have. D. What was it like? E. I don't think so. F. I guess everyone is trying to help. 七、语法填空。 阅读下面短文，在空白处填入一个适当的词，或使用括号内所给单词的正确形式填空。 Joe and Ken are talking about environmental projects. Joe asks Ken 1.__________ he has ever taken part in an environmental project. Ken says yes, he 2.__________ (help) with a Clean-Up Day last year. It was 3.__________ (consider) the biggest clean-up project this city has ever had. More than 1,000 people 4.__________ (come) to help out. Joe thinks 5.__________ is fantastic. He guesses everyone in the city is trying 6.__________ (improve) the environment. Ken agrees and says they can't afford 7.__________ (wait) any longer to take action. Many people think that big things need 8.__________ (do) to save the earth. But they forget that saving the earth begins with small things. For example, you can save electricity by 9.__________ (turn) off the lights. You can also use reusable bags instead of plastic bags. All these small things can make a big 10.__________ (different). 八、阅读理解。 阅读下面短文，从每题所给的A、B、C三个选项中选出最佳选项。 Saving the earth begins with small things that everyone can do. Many people think that only big actions can make a difference, but that's not true. Small daily habits can add up to big changes. For example, you can save electricity by turning off lights when you leave a room. This simple action reduces energy use and helps the environment. You can also use reusable bags when you go shopping. Plastic bags are harmful to the environment because they take hundreds of years to break down. Some stores now charge for plastic bags, which encourages people to bring their own bags. Transportation is another area where small changes help. Instead of driving everywhere, you can ride a bike or walk for short trips. If you need to go far, taking the bus or subway is better than driving alone. This reduces air pollution and saves energy. Recycling is also important. You can recycle paper, plastic, glass, and metal instead of throwing them away. This reduces waste and saves resources. Every small action matters. If everyone does their part, together we can make the earth a cleaner and healthier place to live. ( ) 1. What does the passage mainly talk about? A. Big actions to save the earth. B. Small things everyone can do to help the environment. C. Why people don't care about the environment. ( ) 2. Why are plastic bags harmful? A. Because they are expensive. B. Because they take hundreds of years to break down. C. Because they are hard to carry. ( ) 3. What transportation does the passage suggest for short trips? A. Driving a car.  B. Riding a bike or walking.  C. Taking a taxi. ( ) 4. What can you recycle according to the passage? A. Paper, plastic, glass, and metal.  B. Only paper and plastic.  C. Only glass and metal. ( ) 5. What can we learn from the passage? A. Only big actions can save the earth. B. Small actions from everyone can make a big difference. C. We should wait for the government to take action. 参考答案 一、单词正确形式填空 1. to save 2. be 3. polluted 4. have shown 5. (to) save 二、首字母或句意提示 1. save 2. polluted 3. forget 4. turning 5. ride 三、单项选择 1. B 2. A 3. B 4. A 5. C 6. B 7. B 8. B 9. B 10. C 四、选词填空 1. might/may 2. can/could 3. can/could 4. can/could 5. can, can 五、完成句子 1. trying, save 2. used, clean 3. polluted 4. should, save 5. forget, begins 六、补全对话 1. C 2. D 3. B 4. F 5. A 七、语法填空 1. if/whether 2. helped 3. considered 4. came 5. that/this 6. to improve 7. to wait 8. to be done 9. turning 10. difference 八、阅读理解 1. B 2. B 3. B 4. A 5. B 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $