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八年级下册Unit 4 The Wonders of Nature 知识清单
一、单元核心主题
自然奇观与环境保护——学习描述自然景观、自然现象，表达对自然的惊叹，并讨论如何保护自然。
二、核心词汇
英文 中文 英文 中文
wonder (n.) 奇观；奇迹 insect 昆虫
nature 自然 tree 树
mountain 山 flower 花
hill 小山丘 grass 草
river 河流 living things 生物
lake 湖 environment 环境
ocean/sea 海洋 ecosystem 生态系统
forest 森林 amazing 惊人的
desert 沙漠 wonderful 极好的
waterfall 瀑布 beautiful/pretty 美丽的
cave 洞穴 huge/large 巨大的
island 岛屿 high/tall 高的
beach 海滩 deep 深的
sunrise/sunset 日出/日落 long 长的
rainbow 彩虹 wide 宽的
storm 暴风雨 natural 自然的
lightning 闪电 peaceful 宁静的
thunder 雷声 explore (v.) 探索
cloud 云 discover (v.) 发现
wind 风 protect (v.) 保护
fog 雾 save (v.) 拯救
plant 植物 pollute (v.) 污染
animal 动物 pollution (n.) 污染
bird 鸟 danger (n.) 危险
travel (v.) 旅行 endangered (adj.) 濒危的
visit (v.) 参观 disappear (v.) 消失
三、重点句型与功能表达
1. 描述与惊叹自然奇观（本单元核心）
使用感叹句：
What a beautiful sunset!（多美的日落啊！）
How amazing the waterfall is!（这瀑布太惊人了！）
It’s so wonderful!（它太棒了！）
使用形容词：
The mountains are very high.（这些山非常高。）
The forest looks so peaceful.（这片森林看起来如此宁静。）
The ocean seems endless.（海洋似乎无边无际。）
2. 询问与介绍自然景观
Have you ever seen… （你曾经见过……吗？）
Have you ever seen a rainbow after the rain
What is it like （它是什么样的？）
What is the desert like
Where is it located （它位于哪里？）
It’s located in the south of China.
How tall/deep/long is it （它有多高/深/长？）
How deep is this lake
3. 表达喜爱与偏好
I really like/love…（我真的很喜欢……）
My favorite natural wonder is…（我最喜欢的自然奇观是……）
I prefer mountains to oceans.（比起海洋，我更喜欢山。）
I’m interested in exploring caves.（我对探索洞穴感兴趣。）
4. 谈论环境保护
We should protect our environment.（我们应该保护环境。）
Don’t throw rubbish everywhere.（不要到处扔垃圾。）
It’s important to save water.（节约用水很重要。）
We must stop polluting the rivers.（我们必须停止污染河流。）
Many animals are in danger now.（现在许多动物都处于危险之中。）
5. 旅行与探索计划
I want to visit… one day.（我希望有一天能去参观……）
Let’s go hiking in the mountains.（我们去山里徒步吧。）
Would you like to go to the beach （你想去海滩吗？）
I plan to explore the forest next month.（我计划下个月去探索森林。）
四、语法精讲
1. 现在完成时（二）—— have/has been to 与 have/has gone to（本单元重点）
功能：谈论过去的经历（特别指“去过某地”）或表示动作对现在的影响。
① have/has been to + 地点
含义： “曾经去过某地”（现在已经回来了，有相关经历）。
例句：
I have been to the Great Forest twice.（我去过大森林两次。→ 现在已回，有经历）
She has been to many countries.（她去过很多国家。→ 有旅行经历）
疑问与否定：
Have you ever been to the desert （你曾经去过沙漠吗？）
He hasn’t been to that mountain.（他没去过那座山。）
② have/has gone to + 地点
含义： “已经去某地了”（说话时人还在那里或在途中，未回来）。
例句：
Tom has gone to the beach with his family.（汤姆和家人去海滩了。→ 现在还在那里）
They have gone to explore the cave.（他们去探索洞穴了。→ 目前未回）
注意： 该结构通常不用于第一、二人称做主语的疑问句或否定句。
关键区别：
have been to → 经历，已回
have gone to → 动作，未回
2. 形容词的比较级和最高级（复习与深化）
规则变化：
一般加 er, est: tall → taller → tallest
以e结尾加 r, st: large → larger → largest
重读闭音节双写加 er, est: big → bigger → biggest
以y结尾变y为i加 er, est: pretty → prettier → prettiest
多音节词前加 more, most: amazing → more amazing → most amazing
本单元自然主题例句：
This mountain is higher than that one.（这座山比那座高。）
The Pacific Ocean is the largest ocean in the world.（太平洋是世界上最大的海洋。）
This is the most beautiful sunset I have ever seen.（这是我看过的最美的日落。）
3. so/such 用于感叹与强调
so + 形容词： The sky is so blue today.（今天天空真蓝。）
such (+ a/an) + 名词： It is such a wonderful place!（这真是个奇妙的地方！）
五、课本重点情景与语篇分析
Section A 典型对话（分享经历）：
A: You look so excited.
B: Yes, I just came back from Yellow Mountain.
A: Really Have you been there before
B: No, it was my first time. The sunrise was the most amazing thing I’ve ever seen!
A: Sounds wonderful. I’ve never been there, but I really want to go now.
六、易错点与学习提醒
1. “have been to” 与 “have gone to” 的混淆：
错：Where is Lucy — She has been to the library.（应为 has gone to）
对：I have been to Shanghai three times.（表示经历）
2. “ever” 在现在完成时中的使用：
ever（曾经）用于疑问句和否定句：Have you ever seen a volcano
never（从未）用于否定句：I have never seen snow.
ever 通常不用于肯定句（不说 I have ever been there，而说 I have been there before）。
3. 自然名词的可数与不可数：
可数：mountain（一座山 → mountains），island（一个岛 → islands）
不可数：nature（自然），weather（天气），thunder（雷声），lightning（闪电）
注意：rain（雨）通常不可数，但 a heavy rain（一场大雨）中可视为可数。
4. “pollution” 与 “pollute”：
pollution 是不可数名词：air pollution（空气污染）
pollute 是动词：Factories pollute the river.
5. “最高级” 前定冠词 the 的省略情况：
形容词最高级作表语且不与他人/物比较时，可省略 the：
The lake is deepest here.（这里湖水最深。→ 描述自身特征）
This lake is the deepest in China.（这个湖是中国最深的。→ 明确比较范围，需加 the）
Unit 4 The Wonders of Nature 单元测试卷
班级：__________ 姓名：__________ 分数：__________
一、单项选择（共15小题，每小题1分，共15分）
1. The mountains look so _______. I want to climb them one day.
A. peaceful B. huge C. polluted D. dangerous
2. —Where is Li Ming
—He _______ the forest with his classmates.
A. has been to B. has gone to C. went to D. goes to
3. This is _______ beautiful waterfall I have ever seen.
A. the more B. the most C. more D. most
4. We should _______ our environment and not throw rubbish everywhere.
A. pollute B. save C. protect D. discover
5. —Have you ever _______ a rainbow
—Yes, I saw one last week.
A. see B. saw C. seeing D. seen
6. The Pacific Ocean is _______ than the Atlantic Ocean.
A. large B. larger C. largest D. the largest
7. Many animals are in _______ because their homes are disappearing.
A. wonder B. danger C. peace D. cloud
8. _______ amazing the sunrise is!
A. What B. What a C. What an D. How
9. I _______ the Great Wall twice. It's really wonderful.
A. have been to B. have gone to C. go to D. went to
10. We must stop _______ the rivers with waste from factories.
A. pollute B. polluting C. to pollute D. polluted
11. This river is about 50 meters _______.
A. wide B. high C. tall D. deep
12. I prefer walking in the forest _______ swimming in the sea.
A. to B. than C. for D. with
13. Let's _______ the cave tomorrow. I heard it's very interesting.
A. travel B. visit C. explore D. discover
14. The air in this mountain area is so _______.
A. polluted B. clear C. dangerous D. deep
15. _______ a wonderful natural world we have!
A. How B. What C. Why D. When
二、完形填空（共10小题，每小题1.5分，共15分）
Last summer, my family and I visited a beautiful national park. It was my first time to see such ___16___ mountains and forests. The air was fresh, and the ___17___ was very peaceful.
On the first day, we went hiking. The ___18___ was very tall, and it took us three hours to reach the top. From there, we could see a ___19___ below. The water was so clear that we could see fish swimming.
The next day, we explored a nearby ___20___. It was dark inside, but our guide had a flashlight. We saw some strange rocks and even a few ___21___ sleeping on the ceiling.
During our trip, I learned that this park is home to many ___22___ animals. Some of them are even ___23___ because there are very few left in the world. The park rangers told us it's important to ___24___ these animals and their homes.
I have ___25___ to many places, but this national park is the most wonderful one I've ever seen. I hope to go back again next year.
16. A. polluted B. amazing C. dangerous D. deep
17. A. wind B. environment C. cloud D. thunder
18. A. hill B. river C. mountain D. waterfall
19. A. desert B. lake C. ocean D. forest
20. A. island B. cave C. beach D. desert
21. A. birds B. flowers C. trees D. insects
22. A. dangerous B. rare C. large D. beautiful
23. A. huge B. peaceful C. endangered D. natural
24. A. pollute B. save C. discover D. explore
25. A. gone B. been C. went D. visited
三、阅读理解（共三篇，15小题，每小题2分，共30分）
A 篇
My name is Amy. Last month, I went to the beach with my parents. It was my first time to see the sea. The ocean was so huge and blue! I could hear the sound of the waves and feel the soft wind.
I walked on the beach and collected some beautiful shells. I also saw many birds flying over the sea. In the afternoon, we watched the sunset. The sky turned orange and red. It was the most beautiful sunset I have ever seen.
I love the sea because it makes me feel peaceful and happy. I hope to visit more natural wonders in the future.
26. Where did Amy go last month
A. To the mountains.
B. To the forest.
C. To the beach.
D. To the desert.
27. What did Amy do on the beach
A. She climbed trees.
B. She collected shells.
C. She explored a cave.
D. She swam in the sea.
28. When did they watch the sunset
A. In the morning.
B. At noon.
C. In the afternoon.
D. At night.
29. How did Amy feel about the sea
A. Scared.
B. Bored.
C. Peaceful and happy.
D. Worried.
30. What does Amy hope to do in the future
A. Stay at home.
B. Visit more natural wonders.
C. Live near the sea.
D. Study about birds.
B 篇
The Amazon rainforest is one of the largest rainforests in the world. It is home to millions of plants and animals. Many of them cannot be found anywhere else on Earth.
However, the Amazon is facing serious problems. People are cutting down trees to make space for farms and roads. This is called deforestation. When trees are cut down, animals lose their homes. The air also becomes worse because trees help clean the air.
Scientists say that protecting the rainforest is important for the whole world. Rainforests produce oxygen and help control the Earth's climate. If we lose them, our planet will be in great danger.
We can help save the rainforest by using less paper, recycling, and learning more about why rainforests are important. Every small action can make a difference.
31. What is the Amazon rainforest
A. A desert.
B. A mountain.
C. A rainforest.
D. An ocean.
32. Why are people cutting down trees in the Amazon
A. To build homes for animals.
B. To make space for farms and roads.
C. To plant more trees.
D. To explore the forest.
33. What happens when trees are cut down
A. Animals get more homes.
B. The air becomes cleaner.
C. Animals lose their homes.
D. The climate becomes better.
34. Why are rainforests important for the Earth
A. They produce oxygen and help control climate.
B. They provide wood for building.
C. They are good for farming.
D. They are beautiful to visit.
35. How can we help save the rainforest
A. By cutting down more trees.
B. By using more paper.
C. By recycling and using less paper.
D. By building more roads.
C 篇
Nature is full of wonders that often surprise us. One of these wonders is the aurora, also known as the northern lights. The aurora is a natural light display in the sky, usually seen in places near the North Pole.
The lights are created when particles from the sun hit the Earth's atmosphere. These particles cause the air to glow in beautiful colors like green, pink, and purple. The aurora often looks like dancing curtains of light in the night sky.
Seeing the aurora is a dream for many travelers. However, it is not easy to see because it only appears under certain conditions and in specific places. The best time to see it is during winter in countries like Norway, Iceland, and Canada.
The aurora reminds us how amazing our planet is. It also shows that we still have much to learn about nature. Protecting our environment is important so that future generations can also enjoy such wonders.
36. What is the aurora
A. A kind of animal.
B. A natural light display in the sky.
C. A type of plant.
D. A mountain.
37. Where can we usually see the aurora
A. Near the equator.
B. In deserts.
C. Near the North Pole.
D. In rainforests.
38. What causes the aurora
A. Particles from the sun hitting the Earth's atmosphere.
B. Lights from cities.
C. Reflection of the ocean.
D. Fire in the forest.
39. When is the best time to see the aurora
A. During summer.
B. During winter.
C. During spring.
D. During autumn.
40. Why is it important to protect our environment according to the passage
A. Because it is expensive to travel.
B. Because we need more farms.
C. So that future generations can enjoy natural wonders.
D. Because scientists want to study it.
四、任务型阅读（共5小题，每小题2分，共10分）
阅读下面关于张家界国家森林公园的介绍，根据内容完成句子，每空一词。
Zhangjiajie National Forest Park is in Hunan Province, China. It is famous for its tall and strange mountains. Many of the mountains look like giant stone pillars. The park is also home to many plants and animals. Some animals are endangered, so it is important to protect them.
Visitors can hike in the park, take photos of the beautiful scenery, and breathe the fresh air. The park is very popular with tourists from all over the world.
If you love nature, Zhangjiajie is a wonderful place to visit. You will be amazed by its natural beauty.
41. Zhangjiajie National Forest Park is in _______ Province.
42. The mountains there look like giant _______ pillars.
43. The park is home to many plants and _______.
44. Some animals are _______ and need protection.
45. Visitors can _______ in the park and take photos.
五、补全对话（共5小题，每小题2分，共10分）
根据上下文，在横线上写出适当的句子，使对话完整、通顺。
A: Hi, Sarah. You look excited. Where have you been
B: 46________________________________________. I just came back yesterday.
A: Really 47________________________________________
B: Yes, it was my first time. It was amazing!
A: 48________________________________________
B: I saw many high mountains, clear rivers, and green forests.
A: That sounds wonderful. 49________________________________________
B: The most amazing thing was the sunrise. It was the most beautiful one I've ever seen.
A: Wow, I want to see it too. 50________________________________________.
B: Sure, I can show you my photos later.
六、书面表达（共20分）
假设你是李华，你刚刚参观了一个自然奇观（如：高山、森林、湖泊、瀑布等）。请你给你的英国笔友Mike写一封电子邮件，分享你的经历和感受。
内容包括：
1. 你参观的是什么地方；
2. 那里是什么样的（至少描述两个方面）；
3. 你的感受以及你认为我们应该如何保护这样的自然奇观。
字数要求：80词左右。
参考答案与解析
一、单项选择
1. B
解析： huge 意为“巨大的”，用来形容山，符合“想有一天去爬”的语境。
2. B
解析： has gone to 表示“已经去了某地（现在还没回来）”，符合问句“Where is Li Ming ”的语境。
3. B
解析： the most beautiful 是最高级结构，与“I have ever seen（我所见过的）”这个比较范围一致，前面需要加定冠词 the。
4. C
解析： protect our environment 是固定搭配，意为“保护我们的环境”，符合“不要到处扔垃圾”的语境。
5. D
解析： Have you ever seen... 是现在完成时疑问句结构，动词需用过去分词 seen。
6. B
解析： larger 是形容词比较级，用于两者（太平洋和大西洋）之间的比较。
7. B
解析： in danger 是固定短语，意为“处于危险之中”，与“家园正在消失”的语境相符。
8. D
解析： How + 形容词 + 主语 + 谓语！是感叹句的一种结构，此处修饰形容词 amazing。
9. A
解析： have been to 表示“曾经去过（现在已经回来）”，与“去过两次”的经历描述一致。
10. B
解析： stop doing sth. 意为“停止做某事”，此处表示“必须停止污染河流”。
11. A
解析： wide 用来形容河流的“宽度”，符合“50米”的计量。deep 形容深度，high/tall 形容高度。
12. A
解析： prefer A to B 是固定搭配，意为“比起B来更喜欢A”。
13. C
解析： explore the cave 意为“探索洞穴”，符合“听说很有趣”的语境。
14. B
解析： clear 用来形容空气“清新”，与“山区”的特点相符。
15. B
解析： What a + 形容词 + 单数可数名词 + 主语 + 谓语！是感叹句结构。此处“world”是单数可数名词，前面有形容词 wonderful。
二、完形填空
16. B amazing
解析： amazing 意为“令人惊叹的”，用来形容第一次看到的国家公园的山和森林。
17. B environment
解析： environment 意为“环境”，指代前文描述的空气清新、整体氛围，与 peaceful 搭配。
18. C mountain
解析： 后文提到“reach the top（到达山顶）”，且花了三个小时，说明是较高的山（mountain），而非小山丘（hill）。
19. B lake
解析： 下文提到“water was clear（水很清澈）”，并能看到鱼，符合湖（lake）的特征。
20. B cave
解析： 后文提到“dark inside（里面很黑）”、“flashlight（手电筒）”、“rocks（岩石）”，符合洞穴的特征。
21. A birds
解析： “sleeping on the ceiling（睡在洞顶上）”符合蝙蝠或某些鸟类的习性，选项中 birds 更贴合一般认知。
22. B rare
解析： rare 意为“稀有的”，与后文“有些甚至濒危”形成递进逻辑。
23. C endangered
解析： endangered 是单元核心环保词汇，意为“濒危的”，与“few left in the world（世界上所剩无几）”一致。
24. B save
解析： save these animals 意为“拯救这些动物”，是环保行动的常用表达。
25. B been
解析： have been to many places 表示“去过很多地方”，强调过去的经历，符合后文“但这是最美的一个”的比较。
三、阅读理解
A 篇
26. C
解析： 文章第一句明确说明 “I went to the beach”。
27. B
解析： 第二段提到 “I walked on the beach and collected some beautiful shells.”
28. C
解析： 第二段明确提到 “In the afternoon, we watched the sunset.”
29. C
解析： 第三段提到 “I love the sea because it makes me feel peaceful and happy.”
30. B
解析： 文章最后一句 “I hope to visit more natural wonders in the future.”
B 篇
31. C
解析： 文章第一句直接说明 “The Amazon rainforest is one of the largest rainforests...”
32. B
解析： 第二段明确说明 “People are cutting down trees to make space for farms and roads.”
33. C
解析： 第二段提到 “When trees are cut down, animals lose their homes.”
34. A
解析： 第三段提到 “Rainforests produce oxygen and help control the Earth's climate.”
35. C
解析： 最后一段提到 “We can help save the rainforest by using less paper, recycling...”
C 篇
36. B
解析： 第一段对极光的定义是 “a natural light display in the sky”。
37. C
解析： 第一段明确提到 “usually seen in places near the North Pole”。
38. A
解析： 第二段开头说明 “The lights are created when particles from the sun hit the Earth's atmosphere.”
39. B
解析： 第三段明确提到 “The best time to see it is during winter...”。
40. C
解析： 文章最后一句点明保护环境的目的 “so that future generations can also enjoy such wonders.”
四、任务型阅读
41. Hunan
解析： 原文 “Zhangjiajie National Forest Park is in Hunan Province”。
42. stone
解析： 原文 “look like giant stone pillars”。
43. animals
解析： 原文 “home to many plants and animals”。
44. endangered
解析： 原文 “Some animals are endangered, so it is important to protect them.”
45. hike
解析： 原文 “Visitors can hike in the park, take photos...”。此处需用动词原形。
五、补全对话（参考答案）
46. I have been to a national park. / I went to a national park.
解析： 回答“你去哪儿了”，且下句提到“刚回来”，可以用现在完成时或一般过去时。
47. Had you ever been there before / Was it your first time
解析： 根据下句“Yes, it was my first time.”，此处应询问是否是第一次去。
48. What did you see there / What was it like
解析： 根据下句“I saw many...”的回答，此处应询问看到了什么或那里的样子。
49. What was the most amazing thing / What impressed you most
解析： 根据下句“The most amazing thing was...”的回答，此处应询问最令人惊叹的事物。
50. Can you show me your photos / I'd love to see your photos.
解析： 根据下句“Sure, I can show you my photos later.”，此处应提出看照片的请求或愿望。
六、书面表达（范文参考）
Dear Mike,
How are you Last week, I visited a beautiful waterfall in the mountains. It was an amazing experience.
The waterfall was very high and the water was clear. The sound of the falling water was loud but peaceful. Many green trees and colorful flowers grew around it, making the place look like a painting.
I felt so excited and small in front of this natural wonder. I think we should protect places like this by not throwing rubbish and by telling others about their importance. We must keep them clean and safe for the future.
Have you ever visited a natural wonder I'd love to hear about your experience.
Best wishes,
Li Hua

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