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Unit 4 Amazing Plants and Animals
课时3 Section A (3a-3c) 分层作业
核心知识速记 03拓展培优
01基础达标 03思维进阶
02能力提升
单词默写。
/ 让教学更有效 高效备课 | 英语学科
21世纪教育网(www.21cnjy.com)
21世纪教育网(www.21cnjy.com)
1._____________/l nd/n. 陆地；土地v. 降落；着陆 2._____________ /' fr k n/adj. 非洲的；非洲人的
n. 非洲人
3._____________ /r z/n. 玫瑰；蔷薇 4._____________ /'pi ni/n. 牡丹；芍药
5._____________ /'l t s/n. 莲花 6._____________ /'b t fla /n. 蝴蝶
7._____________/w /n. 翅膀；翼 8._____________ /fr g/n. 蛙；青蛙
9._____________/we /v. 有…… 重；称重量 10._____________(= kilogram; kilogramme)千克；公斤
11._____________ /'g k /n. 银杏 12._____________ /b 'li v/v. 相信；认为有可能
13._____________ /'pr v ns/n. 省份
二、词组默写。
1.在世界上______________________ 2.所有动物中_____________________
3. 接近；直到____________________ 4.超过2亿年前___________________
5.数千的________________________ 6.做某事的最佳时间_________________________
7.散步__________________________
三、词性转换
21世纪教育网(www.21cnjy.com)
1.land (v. 降落 → n. 着陆) → ___________ 2.African (adj. 非洲的 → n. 非洲人) → ___________
3.rose (n. 玫瑰 → adj. 玫瑰色的) → ___________ 4.weigh (v. 称重 → n. 重量) → ___________
5.believe (v. 相信 → n. 信念) → ___________ 6.province (n. 省份 → adj. 省级的) → ___________
四 、短文填空
阅读下面短文，在空白处填入一个适当的单词或括号内单词的正确形式。
Ginkgo trees are like living treasures. They have a long history, 1. ________ (date) back over 200 million years. These trees are not only 2.________(amaze) for their age but also for their beauty.
In autumn, ginkgo trees put on a show. Their leaves turn a bright gold, making them some of the 3. ________ (beautiful) trees in the world. Many people love to visit ginkgo - lined streets and parks during this season. It’s a time when the trees become 4.________(fill) with visitors taking photos and enjoying the view.
Ginkgo trees are also important in Chinese culture. They are seen as a symbol of hope and long life. The old ginkgo tree in the Zhongnan Mountains of Shaanxi Province is a good example. It’s believed to be one of the 5. ________(old) ginkgo trees in China, and it attracts 6.________ (thousand) of tourists every year.
The ginkgo tree has some special features. Its nuts can be used in cooking, and they are 7.________ (taste) in some traditional dishes. Also, ginkgo trees are 8.________ (hard) than many other trees to survive in different environments. They can stand cold winters and hot summers, showing their strong 9. ________ (able) to adapt.
Protecting ginkgo trees is important. They are not just beautiful and useful but also a link to our planet’s past. By learning about and caring for these trees, we can ensure they continue to be a part of our world for 10. ________ (generation) to come.
五、完形填空
The Redwood Forest Adventure
Redwood forests are amazing. The redwood trees are some of the 1. ____ (tall) trees on Earth. They can reach heights of over 100 meters! Walking into a redwood forest feels like entering a 2. ____ (magic) world.
These forests are home to many animals. Birds sing 3. ____ (sweet) in the trees, and small animals run around. The redwood bark is thick and strong. People use it to make 4. ____ (use) things like boxes and crafts.
Redwood trees have a long lifespan. Some are more than 2,000 years old. They grow 5. ____ (slow) but steadily. Even in difficult conditions, they show great 6. ____ (strong) to survive.
Visiting redwood forests is popular. Every year, 7. ____ (thousand) of tourists come to admire these giants. They learn about the trees’ history and 8. ____ (important) to nature.
We must protect redwood forests. They are not just beautiful but also 9. ____ (value) for scientific research. By protecting them, we ensure future generations can 10. ____ (experience) their wonder too.
1.A. tallest B. taller C. tall D. the tall
2.A. magic B. magics C. magical D. magically
3.A. sweet B. sweetly C. sweets D. sweetness
4.A. use B. uses C. useful D. useless
5.A. slow B. slowly C. slower D. slowest
6.A. strength B. strong C. stronger D. strongest
7.A. thousand B. thousands C. thousand of D. thousands of
8.A. important B. importance C. importantly D. import
9.A. valuable B. more valuable C. most valuable D. the valuable
10.A. experience B. experiences C. experienced D. experiencing
六、阅读理解
A
The Amazing Cactus
Cacti are special plants that mainly grow in deserts. Unlike most plants, they have thick stems instead of large leaves. These stems can store water, which is very important for living in dry places.
Cacti come in many shapes and sizes. Some are as small as a tennis ball, while others can grow up to 20 meters tall. Their flowers are usually bright—pink, yellow, or red—and bloom for a short time each year.
Why don’t cacti need much water One reason is their spines. Spines are like sharp needles that grow on the stems. They stop animals from eating the cactus and also reduce water loss by shading the plant.
People in desert areas use cacti in different ways. Some eat the fruit of certain cacti, which is sweet and juicy. Others use the stems to make medicine. But cacti are also in danger because of overcollecting and habitat loss.
根据短文内容，选择最佳答案。
1.Where do most cacti grow （ ）
A. In forests B. In deserts C. In rivers D. In mountains
2.What helps cacti store water （ ）
A. Large leaves B. Thin stems C. Thick stems D. Bright flowers
3.What is the function of cactus spines （ ）
A. To help the plant grow taller B. To store extra water
C. To stop animals from eating the cactus D. To make the plant look beautiful
4.The underlined word “habitat” means ______ in Chinese. （ ）
A. 寿命 B. 栖息地 C. 品种 D. 价值
5.Why are cacti in danger （ ）
A. They get too much water B. They bloom for a short time
C. Overcollecting and habitat loss D. Their fruit is too sweet
七、任务型阅读
请阅读下面的非连续性文本，根据语篇内容，回答问题。
The Journey of Sea Turtles
Sea turtles are ancient creatures that have lived on Earth for over 100 million years. They live in warm oceans around the world, but female sea turtles must return to the beach to lay their eggs.
A female sea turtle can lay up to 100 eggs at a time. The eggs are buried in the sand, which keeps them warm and safe. After about two months, baby turtles break out of the eggs and try to reach the ocean. This is a dangerous journey—many are eaten by birds or other animals.
Sea turtles are important to ocean health. They eat sea grass, which helps keep the grass beds healthy. Healthy grass beds provide homes for many sea animals. However, sea turtles are in danger. Plastic pollution, climate change, and beach development harm their survival.
Scientists and volunteers are working to protect sea turtles. They patrol beaches to guard nesting areas and clean up plastic waste. By learning about sea turtles, we can help make sure they continue their long journey on Earth.
根据短文内容，完成下列各题。
1.How long have sea turtles lived on Earth （请用英语回答，不超过 8 个词）
______________________________________________________________________
2.Where do female sea turtles lay their eggs （请用英语回答，不超过 5 个词）
______________________________________________________________________
3.What do sea turtles eat to keep grass beds healthy （请用英语回答）
______________________________________________________________________
4.The underlined word “patrol” means _________________ in Chinese.
5.What other ways do you think can help protect sea turtles （请用英语回答，至少两点）
______________________________________________________________________
21世纪教育网(www.21cnjy.com)Unit 4 Amazing Plants and Animals
课时3 Section A (3a-3c) 分层作业
核心知识速记 03拓展培优
01基础达标 04思维进阶
02能力提升
单词默写。
/ 让教学更有效 高效备课 | 英语学科
21世纪教育网(www.21cnjy.com)
21世纪教育网(www.21cnjy.com)
1._____________/l nd/n. 陆地；土地v. 降落；着陆 2._____________ /' fr k n/adj. 非洲的；非洲人的
n. 非洲人
3._____________ /r z/n. 玫瑰；蔷薇 4._____________ /'pi ni/n. 牡丹；芍药
5._____________ /'l t s/n. 莲花 6._____________ /'b t fla /n. 蝴蝶
7._____________/w /n. 翅膀；翼 8._____________ /fr g/n. 蛙；青蛙
9._____________/we /v. 有…… 重；称重量 10._____________(= kilogram; kilogramme)千克；公斤
11._____________ /'g k /n. 银杏 12._____________ /b 'li v/v. 相信；认为有可能
13._____________ /'pr v ns/n. 省份
【答案】1.land 2.African 3.rose 4.peony 5.lotus 6.butterfly 7.wing
8.frog 9.weigh 10.kg 11.ginkgo 12.believe 13.province
二、词组默写。
1.在世界上______________________ 2.所有动物中_____________________
3. 接近；直到____________________ 4.超过2亿年前___________________
5.数千的________________________ 6.做某事的最佳时间_________________________
7.散步__________________________
【答案】1.in the world 2.among all animals 3. up to 4.over 200 million years ago
5.thousands of 6.the best time to do sth. 7.take a walk
三、词性转换
21世纪教育网(www.21cnjy.com)
1.land (v. 降落 → n. 着陆) → ___________ 2.African (adj. 非洲的 → n. 非洲人) → ___________
3.rose (n. 玫瑰 → adj. 玫瑰色的) → ___________ 4.weigh (v. 称重 → n. 重量) → ___________
5.believe (v. 相信 → n. 信念) → ___________ 6.province (n. 省份 → adj. 省级的) → ___________
【答案】1. landing 2. African 3. rosy 4.weight 5.belief 6.provincial
四 、短文填空
阅读下面短文，在空白处填入一个适当的单词或括号内单词的正确形式。
Ginkgo trees are like living treasures. They have a long history, 1. ________ (date) back over 200 million years. These trees are not only 2.________(amaze) for their age but also for their beauty.
In autumn, ginkgo trees put on a show. Their leaves turn a bright gold, making them some of the 3. ________ (beautiful) trees in the world. Many people love to visit ginkgo - lined streets and parks during this season. It’s a time when the trees become 4.________(fill) with visitors taking photos and enjoying the view.
Ginkgo trees are also important in Chinese culture. They are seen as a symbol of hope and long life. The old ginkgo tree in the Zhongnan Mountains of Shaanxi Province is a good example. It’s believed to be one of the 5. ________(old) ginkgo trees in China, and it attracts 6.________ (thousand) of tourists every year.
The ginkgo tree has some special features. Its nuts can be used in cooking, and they are 7.________ (taste) in some traditional dishes. Also, ginkgo trees are 8.________ (hard) than many other trees to survive in different environments. They can stand cold winters and hot summers, showing their strong 9. ________ (able) to adapt.
Protecting ginkgo trees is important. They are not just beautiful and useful but also a link to our planet’s past. By learning about and caring for these trees, we can ensure they continue to be a part of our world for 10. ________ (generation) to come.
【答案】 1.dating 2.amazing 3.most beautiful 4.filled 5.oldest
6.thousands 7.tasty 8.harder 9.ability 10.generations
【导语】
1.解析：考查非谓语动词。“date back” 与 “They（ginkgo trees ）” 是主动关系，用现在分词作伴随状语，填 dating ，表示银杏树的历史可追溯到 2 亿多年前 。
2.解析：考查形容词。此处描述银杏树的性质，“-ing” 形容词 amazing（令人惊叹的 ）修饰物，填 amazing ，指银杏树因树龄和美丽令人惊叹 。
3.解析：考查形容词最高级。“some of + the + 形容词最高级 + 可数名词复数” 结构，beautiful 的最高级是 most beautiful ，表示是世界上最美丽的树之一 。
4.解析：考查固定短语。“be filled with” 是固定搭配，意为 “充满……” ，填 filled ，指树上满是拍照和赏景的游客 。
5.解析：考查形容词最高级。“one of + the + 形容词最高级 + 可数名词复数” 结构，old 的最高级是 oldest ，表示是中国最古老的银杏树之一 。
6.解析：考查数词。“thousands of” 是固定短语，意为 “成千上万的” ，填 thousands ，指每年吸引成千上万游客 。
7.解析：考查形容词。系动词 “are” 后接形容词作表语，taste 的形容词形式是 tasty（美味的 ），填 tasty ，说明银杏果在传统菜肴中很美味 。
8.解析：考查形容词比较级。“than” 是比较级标志，hard 的比较级是 harder ，表示银杏树比许多其他树更能在不同环境中存活 。
9.解析：考查名词。形容词 “strong” 后接名词，able 的名词形式是 ability（能力 ），填 ability ，指展现出强大的适应能力 。
10.解析：考查名词复数。“for generations to come” 是固定表达，意为 “世世代代” ，填 generations ，表示确保银杏树为后世存在 。
五、完形填空
The Redwood Forest Adventure
Redwood forests are amazing. The redwood trees are some of the 1. ____ (tall) trees on Earth. They can reach heights of over 100 meters! Walking into a redwood forest feels like entering a 2. ____ (magic) world.
These forests are home to many animals. Birds sing 3. ____ (sweet) in the trees, and small animals run around. The redwood bark is thick and strong. People use it to make 4. ____ (use) things like boxes and crafts.
Redwood trees have a long lifespan. Some are more than 2,000 years old. They grow 5. ____ (slow) but steadily. Even in difficult conditions, they show great 6. ____ (strong) to survive.
Visiting redwood forests is popular. Every year, 7. ____ (thousand) of tourists come to admire these giants. They learn about the trees’ history and 8. ____ (important) to nature.
We must protect redwood forests. They are not just beautiful but also 9. ____ (value) for scientific research. By protecting them, we ensure future generations can 10. ____ (experience) their wonder too.
1.A. tallest B. taller C. tall D. the tall
2.A. magic B. magics C. magical D. magically
3.A. sweet B. sweetly C. sweets D. sweetness
4.A. use B. uses C. useful D. useless
5.A. slow B. slowly C. slower D. slowest
6.A. strength B. strong C. stronger D. strongest
7.A. thousand B. thousands C. thousand of D. thousands of
8.A. important B. importance C. importantly D. import
9.A. valuable B. more valuable C. most valuable D. the valuable
10.A. experience B. experiences C. experienced D. experiencing
【答案】1.A 2.C 3.B 4.C 5.B 6.A 7.D 8.B 9.A 10.A
【导语】本文聚焦红杉林，介绍红杉树的高度、生长环境、生态意义及保护价值，涵盖形容词最高级、词性转换、固定搭配等语法点，契合八年级上册英语语法考查方向，助力学生在语境中巩固知识 。
第 1 题 句意：红杉树是地球上最高的树之一。
解析：“some of + the + 形容词最高级 + 可数名词复数” 为固定结构，用于描述在某一范围内 “最…… 之一” 。“tall” 的最高级形式是 “tallest” ，此句说红杉树是地球上最高的树之一，所以填 “tallest（A 选项 ）” 。
第 2 题 句意：走进红杉林，感觉就像进入了一个神奇的世界。
解析：修饰名词 “world” 要用形容词，“magic” 是名词或动词，其形容词形式 “magical（C 选项 ）” 意为 “神奇的；有魔力的” ，能生动描绘出红杉林像神奇世界的感觉，所以填 “magical” 。
第 3 题 句意：鸟儿在树上甜美地歌唱，小动物们四处奔跑。
解析：修饰动词 “sing” 需用副词，“sweet” 是形容词，其副词形式 “sweetly（B 选项 ）” 表示 “甜美地；悦耳地” ，用来体现鸟儿歌声的特点，所以填 “sweetly” 。
第 4 题 句意：人们用它（红杉树皮 ）制作像盒子、手工艺品这类有用的东西。
解析：修饰名词 “things” 要用形容词，“use” 是动词或名词，其形容词形式 “useful（C 选项 ）” 意为 “有用的” ，说明红杉树皮可制作出有用的物品，所以填 “useful” 。
第 5 题 句意：它们生长缓慢但稳定。
解析：修饰动词 “grow” 要用副词，“slow” 是形容词，其副词形式 “slowly（B 选项 ）” 表示 “缓慢地” ，用于描述红杉树生长的速度，所以填 “slowly” 。
第 6 题 句意：即使在恶劣条件下，它们也展现出强大的生存力量。
解析：“great” 是形容词，后面要接名词，“strong” 是形容词，其名词形式 “strength（A 选项 ）” 意为 “力量；实力” ，表明红杉树具备强大的生存力量，所以填 “strength” 。
第 7 题 句意：每年，成千上万的游客前来观赏这些 “巨人”（红杉树 ）。
解析：“thousands of（D 选项 ）” 是固定短语，意思是 “成千上万的；数以千计的” ，用于修饰可数名词复数 “tourists” ，突出每年来参观红杉林的游客数量众多，所以填 “thousands of” 。
第 8 题 句意：他们了解这些树的历史以及它们对大自然的重要性。
解析：“and” 连接并列的成分，前面 “history” 是名词，此处也应用名词，“important” 是形容词，其名词形式 “importance（B 选项 ）” 表示 “重要性” ，用于说明红杉树对大自然而言具有的重要价值，所以填 “importance” 。
第 9 题 句意：它们不仅美丽，对科学研究也很有价值。
解析：“be + 形容词 + for...” 是常用结构，“value” 是名词，其形容词形式 “valuable（A 选项 ）” 意为 “有价值的；宝贵的” ，体现出红杉林对科学研究来说是有价值的，所以填 “valuable” 。
第 10 题 句意：通过保护它们，我们确保后代也能体验到它们的奇妙之处。
解析：“can” 是情态动词，情态动词后要接动词原形，“experience（A 选项 ）” 作为动词，意为 “体验；经历” ，表示后代能够体验到红杉林的奇妙之处，所以填 “experience” 。
六、阅读理解
A
The Amazing Cactus
Cacti are special plants that mainly grow in deserts. Unlike most plants, they have thick stems instead of large leaves. These stems can store water, which is very important for living in dry places.
Cacti come in many shapes and sizes. Some are as small as a tennis ball, while others can grow up to 20 meters tall. Their flowers are usually bright—pink, yellow, or red—and bloom for a short time each year.
Why don’t cacti need much water One reason is their spines. Spines are like sharp needles that grow on the stems. They stop animals from eating the cactus and also reduce water loss by shading the plant.
People in desert areas use cacti in different ways. Some eat the fruit of certain cacti, which is sweet and juicy. Others use the stems to make medicine. But cacti are also in danger because of overcollecting and habitat loss.
根据短文内容，选择最佳答案。
1.Where do most cacti grow （ ）
A. In forests B. In deserts C. In rivers D. In mountains
2.What helps cacti store water （ ）
A. Large leaves B. Thin stems C. Thick stems D. Bright flowers
3.What is the function of cactus spines （ ）
A. To help the plant grow taller B. To store extra water
C. To stop animals from eating the cactus D. To make the plant look beautiful
4.The underlined word “habitat” means ______ in Chinese. （ ）
A. 寿命 B. 栖息地 C. 品种 D. 价值
5.Why are cacti in danger （ ）
A. They get too much water B. They bloom for a short time
C. Overcollecting and habitat loss D. Their fruit is too sweet
【答案】1.B 2.C 3.C 4.B 5.C
【导语】本文介绍了仙人掌的生长环境、形态特征、适应干旱的原因、人类对其的利用及面临的威胁，主题围绕特殊植物展开，符合八年级上册英语阅读对自然科普类文本的考查，侧重细节理解和词义猜测能力的培养。
1.细节理解题,此类题目主要考查对文章中具体信息的获取能力。在文中第一句 “Cacti are special plants that mainly grow in deserts” 明确提到仙人掌主要生长在沙漠，所以答案选 B。
2 细节理解题,解答这类题需要在文中找到与问题相关的细节描述。文中 “they have thick stems instead of large leaves. These stems can store water” 说明粗厚的茎能储存水分，因此答案是 C。
3 细节理解题,重点在于准确理解文中关于特定事物作用的表述。文中 “Spines... stop animals from eating the cactus” 指出尖刺能阻止动物啃食仙人掌，所以选 C。
4 词义猜测题,这类题需要结合上下文语境来推断单词的意思。结合 “habitat loss” 与 “overcollecting（过度采集）” 并列，都指威胁仙人掌生存的因素，可推测 “habitat” 为 “栖息地”，答案是 B。
5 细节理解题,要从文中找到导致某一结果的原因描述。文中最后一句 “cacti are also in danger because of overcollecting and habitat loss” 明确原因是过度采集和栖息地丧失，所以选 C。
七、任务型阅读
请阅读下面的非连续性文本，根据语篇内容，回答问题。
The Journey of Sea Turtles
Sea turtles are ancient creatures that have lived on Earth for over 100 million years. They live in warm oceans around the world, but female sea turtles must return to the beach to lay their eggs.
A female sea turtle can lay up to 100 eggs at a time. The eggs are buried in the sand, which keeps them warm and safe. After about two months, baby turtles break out of the eggs and try to reach the ocean. This is a dangerous journey—many are eaten by birds or other animals.
Sea turtles are important to ocean health. They eat sea grass, which helps keep the grass beds healthy. Healthy grass beds provide homes for many sea animals. However, sea turtles are in danger. Plastic pollution, climate change, and beach development harm their survival.
Scientists and volunteers are working to protect sea turtles. They patrol beaches to guard nesting areas and clean up plastic waste. By learning about sea turtles, we can help make sure they continue their long journey on Earth.
根据短文内容，完成下列各题。
1.How long have sea turtles lived on Earth （请用英语回答，不超过 8 个词）
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2.Where do female sea turtles lay their eggs （请用英语回答，不超过 5 个词）
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3.What do sea turtles eat to keep grass beds healthy （请用英语回答）
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4.The underlined word “patrol” means _________________ in Chinese.
5.What other ways do you think can help protect sea turtles （请用英语回答，至少两点）
______________________________________________________________________
【答案】1.Over 100 million years. 2.On the beach. 3.Sea grass. 4.巡逻
5.We can reduce plastic use. We can tell others about protecting sea turtles. / We can support sea turtle protection organizations. (答案合理即可)
【导语】本文介绍了海龟的生存历史、繁殖习性、对海洋健康的作用、面临的威胁及保护措施，主题围绕海洋生物展开，符合八年级上册英语阅读表达的考查方向，涉及细节提取、词义猜测和开放表达等能力
1. 解析：文中第一句明确提到海龟在地球上生存的时间，提炼关键信息并控制词数即可。
2. 解析：问题询问雌海龟产卵的地点，文中 “female sea turtles must return to the beach to lay their eggs” 是关键句，简洁回答即可。
3. 解析：文中提到海龟食用某种东西来保持海草床健康，直接找出该事物即可。
4 .解析：“patrol beaches to guard nesting areas” 结合语境可知是 “巡逻海滩保护产卵区”，故 “patrol” 意为 “巡逻”。
5 .解析：需基于文中 “plastic pollution, climate change” 等威胁，提出合理的保护方法，答案不唯一，体现开放性。
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