Unit 4 期中复习（语法专练）2025-2026学年人教版八年级上册

Unit 4 Amazing Plants and Animals期中考试复习习题 Grammar Focus 【语法中考感知】 Ⅰ. 构成规则 1. 规则变化： • 单音节/部分双音节：est (fast → fastest, early → earliest) • 辅音字母+y结尾：y → i + est (happy → happiest) • 重读闭音节：双写辅音 + est (big → biggest, hot → hottest) • 多音节/部分双音节：most + 原级 (beautiful → most beautiful, slowly → most slowly) 2. 不规则变化： • good/well → best • bad/badly/ill → worst • many/much → most • little → least • far → farthest/furthest Ⅱ. 常考重点与易错点 1. 定冠词 the：形容词最高级前通常加 the (He is the tallest in our class.)。 • 易错点：副词最高级前 the 可省略 (He runs (the) fastest.)。 • 易错点：当形容词最高级前有物主代词、名词所有格时，不加 the (She is my best friend.)。 2. 比较范围： • in + 集体/范围 (in the class, in China) • of/among + 个体/类别 (of the three, among us) • of all the..., one of the + 最高级 + 复数名词 3. 隐含比较：使用 the 和比较级结构表示最高级含义。 • 比较级 + than any other + 单数名词 (China is larger than any other country in Asia.) • 比较级 + than the other + 复数名词 (Tom is taller than the other boys.) 4. 固定句型： • This is/was the + 最高级 + 名词 + 定语从句 (This is the most interesting book I have ever read.) 【基础知识过关】 Ⅰ. 单项选择。 1. The Amazon rainforest is one of ______ places on Earth, full of life. A. wet B. wetter C. wettest  D. the wettest 2. Among all the students, Jenny listens to the teacher ______. A. the most carefully B. more carefully C. most carefully  D. carefully 3. — Which is ______ season in your hometown? — I think it's autumn. A. beautiful B. more beautiful  C. the most beautiful  D. most beautiful 4. This is ______ movie I have ever seen. I almost fell asleep. A. the most exciting  B. the least interesting  C. less interesting D. more exciting 5. Of the two pandas, the one eating bamboo is ______. A. the heavier  B. heaviest C. the heaviest D. more heavier 6. The giant panda is one of ______ animals in China. A. the more popular  B. the most popular  C. most popular D. popular 7. He runs ______ than any other student in his class. That means he is the fastest. A. fast  B. faster  C. fastest D. the fastest 8. We must protect ______ (few) resources we have left for future generations. A. a few B. fewer  C. the fewest  D. the few 9. — What do you think of the new science book? — It's ______ book I've ever read. A. good B. better  C. the best  D. best 10. The weather report says tomorrow will be even ______. We'd better stay at home. A. bad B. worse  C. the worst  D. worst Ⅱ. 用所给词的正确形式填空。 11. The cheetah runs __________ (fast) of all the land animals. 12. I think protecting nature is one of the__________ (important) things we can do. 13. This kind of butterfly is __________ (tiny) than your fingernail. 14. Who jumped __________ (far) in your PE class, Mike or John? 15. Among all the subjects, I like English __________ (well). 16. This is the __________ (lively) party I have ever been to. Everyone is having fun! 17. We need to act __________ (quickly) to save the endangered animals. 18. That was the __________ (bad) storm we have had in ten years. 19. The story about the panda is the __________ (interesting) one in the whole book. 20. Of all the students, she does her homework the __________ (carefully). Ⅲ. 选词填空。 (选择下列词语并用其正确形式填空，每个词限用一次) good bad much little far early happy loud careful important Protecting Our Ecosystem The ecosystem is one of the21. __________ (important) things we have on Earth. However, it is facing 22. __________ (far) challenges than we thought. Some species are in the23. __________ (bad) situation now because their homes are disappearing. To help, we should start with the 24. __________ (simple) step: not littering. We also need to think 25. __________ (happy) about our future. The 26. __________ (little) waste we produce, the better for our planet. Last week, our class had a debate on environmental protection. I prepared 27. __________ (careful) and spoke 28. __________ (loud) to make my point. I arrived 29. __________ (early) that morning to get a good seat. I believe that if we all try our 30. __________ (good), we can make a real difference. 【能力提升训练】 Ⅳ. 完形填空 阅读下面短文，掌握其大意，然后从各题所给的 A、B、C、D四个选项中选出最佳选项。 Panda is a symbol of China. It is also one of the rarest animals in the world. Many people think pandas are lazy because they eat and sleep for about 12 hours a day. ___1___， they are actually good at climbing trees. Pandas mainly live on bamboo. A panda can eat a large ___2___ of bamboo every day. However, bamboo doesn't have much nutrition (营养)， ___3___ pandas need to eat a lot to get enough energy. Sadly, the bamboo forests are getting smaller, so pandas are losing their homes. That's ___4___ they are in danger now. To protect pandas, the Chinese government has built many nature reserves. In these reserves, pandas can live ___5___． Scientists also do research to learn more about their habits. Everyone can ___6___ in protecting pandas. For example, we can tell more people about the ___7___ of saving them. We can also save paper to protect their forests. It is ___8___ for us to live in a world with these lovely animals. Let's take action now! If we don't protect them, they might ___9___ forever. Remember, protecting pandas is protecting ___10___ world. ( ) 1. A. For example B. Moreover C. However D. Actually ( ) 2. A. number B. amount C. piece D. kind ( ) 3. A. so B. but C. because D. if ( ) 4. A. when B. where C. why D. how ( ) 5. A. happily B. angry C. sad D. happy ( ) 6. A. play a part B. take care C. have fun D. make sure ( ) 7. A. importance B. important C. ecosystem D. popular ( ) 8. A. terrible B. disappointing C. necessary D. impossible ( ) 9. A. appear B. increase C. disappear D. land ( ) 10. A. us B. our C. ourselves D. we Ⅴ. 补全对话 根据对话内容，从文后选择适当的选项补全对话，其中有一项是多余的。 A: Hi, Li Ming. Did you watch the documentary（纪录片） about wild animals last night? B: ___11___ It was about how climate change is affecting their lives. A: Yes, it's really worrying. ___12___ B: I think we should do something to help. For example, we can plant more trees. A: Good idea. Trees can provide homes for many animals. ___13___ B: Really? What is it? A: We can also use less electricity. ___14___ B: I see. ___15___ Then we can produce less carbon dioxide (二氧化碳). A: Exactly! Small actions can make a big difference. A. That's one way to help. B. What else can we do? C. Yes, I did. D. No, I don't think so. E. In order to protect them, we need to take action. F. That means we should turn off the lights when we leave a room. 11._______ 12._______ 13._______ 14._______ 15._______ 学科网（北京）股份有限公司 $ Unit 4 Amazing Plants and Animals期中考试复习答案解析 Grammar Focus 【语法中考感知】 Ⅰ. 构成规则 1. 规则变化： • 单音节/部分双音节：est (fast → fastest, early → earliest) • 辅音字母+y结尾：y → i + est (happy → happiest) • 重读闭音节：双写辅音 + est (big → biggest, hot → hottest) • 多音节/部分双音节：most + 原级 (beautiful → most beautiful, slowly → most slowly) 2. 不规则变化： • good/well → best • bad/badly/ill → worst • many/much → most • little → least • far → farthest/furthest Ⅱ. 常考重点与易错点 1. 定冠词 the：形容词最高级前通常加 the (He is the tallest in our class.)。 • 易错点：副词最高级前 the 可省略 (He runs (the) fastest.)。 • 易错点：当形容词最高级前有物主代词、名词所有格时，不加 the (She is my best friend.)。 2. 比较范围： • in + 集体/范围 (in the class, in China) • of/among + 个体/类别 (of the three, among us) • of all the..., one of the + 最高级 + 复数名词 3. 隐含比较：使用 the 和比较级结构表示最高级含义。 • 比较级 + than any other + 单数名词 (China is larger than any other country in Asia.) • 比较级 + than the other + 复数名词 (Tom is taller than the other boys.) 4. 固定句型： • This is/was the + 最高级 + 名词 + 定语从句 (This is the most interesting book I have ever read.) 【基础知识过关】 Ⅰ. 单项选择。 1. The Amazon rainforest is one of ______ places on Earth, full of life. A. wet B. wetter C. wettest  D. the wettest 2. Among all the students, Jenny listens to the teacher ______. A. the most carefully B. more carefully C. most carefully  D. carefully 3. — Which is ______ season in your hometown? — I think it's autumn. A. beautiful B. more beautiful  C. the most beautiful  D. most beautiful 4. This is ______ movie I have ever seen. I almost fell asleep. A. the most exciting  B. the least interesting  C. less interesting D. more exciting 5. Of the two pandas, the one eating bamboo is ______. A. the heavier  B. heaviest C. the heaviest D. more heavier 6. The giant panda is one of ______ animals in China. A. the more popular  B. the most popular  C. most popular D. popular 7. He runs ______ than any other student in his class. That means he is the fastest. A. fast  B. faster  C. fastest D. the fastest 8. We must protect ______ (few) resources we have left for future generations. A. a few B. fewer  C. the fewest  D. the few 9. — What do you think of the new science book? — It's ______ book I've ever read. A. good B. better  C. the best  D. best 10. The weather report says tomorrow will be even ______. We'd better stay at home. A. bad B. worse  C. the worst  D. worst 参考答案与解析 1. D.查 "one of the + 最高级 + 复数名词" 结构。 2. A. listen 是动词，需用副词修饰。carefully 是多音节副词，最高级是 the most carefully。副词前的 the 可省略，但选项中带 the 也是正确的。 3. C. season 是单数，问的是“最...的季节”，需用最高级，且前加 the。 4. B. 根据“我几乎睡着了”可知电影无聊。interesting 是多音节词，最高级是 the most interesting，其反义是 the least interesting。 5. A. 范围是 "of the two pandas"，两者比较用比较级。但特指“两个中更重的那个”，常用 "the + 比较级" 结构。 6. B. 考查 "one of the + 最高级 + 复数名词" 结构。 7. B. than 是比较级的标志词。than any other student 是隐含最高级的常用比较级句型。 8. D. 此处 the few 后接名词 resources，是特指“我们仅剩的这点资源”，为固定用法，不表示最高级。 9. C. 考查 "It's the best book I've ever read." 的经典句型，最高级前加 the。 10. B. even 常修饰比较级，且根据语境“最好待在家”可知天气更糟。bad 的比较级是 worse。 Ⅱ. 用所给词的正确形式填空。 11. The cheetah runs __________ (fast) of all the land animals. 12. I think protecting nature is one of the__________ (important) things we can do. 13. This kind of butterfly is __________ (tiny) than your fingernail. 14. Who jumped __________ (far) in your PE class, Mike or John? 15. Among all the subjects, I like English __________ (well). 16. This is the __________ (lively) party I have ever been to. Everyone is having fun! 17. We need to act __________ (quickly) to save the endangered animals. 18. That was the __________ (bad) storm we have had in ten years. 19. The story about the panda is the __________ (interesting) one in the whole book. 20. Of all the students, she does her homework the __________ (carefully). 参考答案与解析 11. fastest。范围 of all...，用最高级。fast 作副词，最高级前 the 可省略，故填写(the) fastest 。 12. most important。one of the + 最高级 + 复数名词 结构。 13. tinier。than 是比较级标志。tiny 变比较级：y → i + er。 14. farther/further。far 的比较级可以是 farther (距离) 或 further (程度)。 15. best。like...best 是固定搭配，意为“最喜欢”。 16. liveliest。lively 以辅音字母加 y 结尾，变最高级：y → i + est。 17. more quickly。act 是动词，需用副词修饰。quickly 是多音节副词，比较级/最高级前加 more/most。此处无比三者范围，但语境暗示需要“更快地行动”，用比较级。 18. worst。bad 的最高级是 worst。 19. most interesting。one 是单数，且由定语限定，表示“最有趣的那一个”，用最高级。 20. most carefully。范围 Of all the students，用最高级。carefully 是多音节副词，最高级是 the most carefully。 Ⅲ. 选词填空。 (选择下列词语并用其正确形式填空，每个词限用一次) good bad much little far early happy loud careful important Protecting Our Ecosystem The ecosystem is one of the21. __________ (important) things we have on Earth. However, it is facing 22. __________ (far) challenges than we thought. Some species are in the23. __________ (bad) situation now because their homes are disappearing. To help, we should start with the 24. __________ (simple) step: not littering. We also need to think 25. __________ (happy) about our future. The 26. __________ (little) waste we produce, the better for our planet. Last week, our class had a debate on environmental protection. I prepared 27. __________ (careful) and spoke 28. __________ (loud) to make my point. I arrived 29. __________ (early) that morning to get a good seat. I believe that if we all try our 30. __________ (good), we can make a real difference. 参考答案与解析 21. most important (important的最高级)。"one of the + 最高级 + 复数名词"结构。 22. further (far的比较级)。than是比较级标志。further 在此处意为“更严峻的”。 23. worst (bad的最高级)。修饰名词situation。 24. simplest (simple的最高级)。形容词最高级，指“最简单的步骤”。 25. more happily (happy → happily的比较级)。think是动词，需用副词修饰。意为“更乐观地思考”。 26. less (little的比较级)。“the + 比较级..., the + 比较级...”句型。 27. (the) most carefully (careful → carefully的最高级)。prepare是动词，需用副词修饰，副词最高级前的the可以省略。此处强调在所有人中准备得“最充分”。 28. (the) loudest (loud的最高级)。speak是动词，需用副词修饰。 29. (the) earliest (early的最高级)。arrive是动词，需用副词修饰。 30. best (good的最高级)。try one's best是固定短语。 【能力提升训练】 Ⅳ. 完形填空 阅读下面短文，掌握其大意，然后从各题所给的 A、B、C、D四个选项中选出最佳选项。 Panda is a symbol of China. It is also one of the rarest animals in the world. Many people think pandas are lazy because they eat and sleep for about 12 hours a day. ___1___， they are actually good at climbing trees. Pandas mainly live on bamboo. A panda can eat a large ___2___ of bamboo every day. However, bamboo doesn't have much nutrition (营养)， ___3___ pandas need to eat a lot to get enough energy. Sadly, the bamboo forests are getting smaller, so pandas are losing their homes. That's ___4___ they are in danger now. To protect pandas, the Chinese government has built many nature reserves. In these reserves, pandas can live ___5___． Scientists also do research to learn more about their habits. Everyone can ___6___ in protecting pandas. For example, we can tell more people about the ___7___ of saving them. We can also save paper to protect their forests. It is ___8___ for us to live in a world with these lovely animals. Let's take action now! If we don't protect them, they might ___9___ forever. Remember, protecting pandas is protecting ___10___ world. ( ) 1. A. For example B. Moreover C. However D. Actually ( ) 2. A. number B. amount C. piece D. kind ( ) 3. A. so B. but C. because D. if ( ) 4. A. when B. where C. why D. how ( ) 5. A. happily B. angry C. sad D. happy ( ) 6. A. play a part B. take care C. have fun D. make sure ( ) 7. A. importance B. important C. ecosystem D. popular ( ) 8. A. terrible B. disappointing C. necessary D. impossible ( ) 9. A. appear B. increase C. disappear D. land ( ) 10. A. us B. our C. ourselves D. we 参考答案与解析 1. C. 解析：上文说“人们认为熊猫懒”，下文说“它们实际上擅长爬树”，前后是转折关系，故选However。 2. B. 解析：bamboo（竹子）为不可数名词，表示“大量”应用a large amount of. A large number of 后接可数名词复数。 3. A. 解析：上文“竹子营养不多”和下文“熊猫需要吃很多”是因果关系，故选so（所以）。 4. C. 解析：上文“竹林变小，熊猫失去家园”是“它们处于危险中”的原因，故选why（这就是为什么...）。 5. A. 解析：live是动词，修饰动词要副词. 根据语境，在自然保护区里熊猫应该生活得“快乐”，故选happily。 6. A. 解析：play a part in...是固定短语，意为“在...中发挥作用”，符合“每个人都能发挥作用”的语境。 7. A. 解析：定冠词the后需接名词，根据句意“告诉人们拯救熊猫的重要性”，应选importance。 8. C. 解析：根据下文呼吁采取行动，可推知作者认为“与我们共同生活是必要的”，故选necessary。 9. C. 解析：根据“如果我们不保护它们”的假设，后果可能是“永远消失”，故选disappear。 10. B. 解析：空格后是名词world，此处需用形容词性物主代词our来修饰。 Ⅴ. 补全对话 根据对话内容，从文后选择适当的选项补全对话，其中有一项是多余的。 A: Hi, Li Ming. Did you watch the documentary（纪录片） about wild animals last night? B: ___11___ It was about how climate change is affecting their lives. A: Yes, it's really worrying. ___12___ B: I think we should do something to help. For example, we can plant more trees. A: Good idea. Trees can provide homes for many animals. ___13___ B: Really? What is it? A: We can also use less electricity. ___14___ B: I see. ___15___ Then we can produce less carbon dioxide (二氧化碳). A: Exactly! Small actions can make a big difference. A. That's one way to help. B. What else can we do? C. Yes, I did. D. No, I don't think so. E. In order to protect them, we need to take action. F. That means we should turn off the lights when we leave a room. Ⅴ. 补全对话 11. C。解析：上句是一般疑问句，且下句“It was about...”表明B看了纪录片，故选 C。 12. E。解析：上句表达担忧，下句提出行动建议，E项“为了保护它们，我们需要采取行动”完美承上启下。 13. B。解析：上句A肯定种树是个好主意，下句 B问“是什么”，中间自然需要A引出另一个建议，故用 B项“我们还能做什么？”来过渡。 14. F。解析：上句A提出“我们可以少用电”，F项“那意味着...”具体解释了如何节约用电，逻辑紧密。 15. A。解析：B理解了A的建议后，用A项“那是一种帮助的方式”来表示认同，然后进一步阐释，对话流畅自然。 学科网（北京）股份有限公司 $