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Unit 4 The Wonders of Nature.
Welcome to the unit & Grammar
1.掌握Unit 4 The Wonders of Nature部分的重点单词、短语和句型；
单词：
1.wonder n.奇观；惊叹v.琢磨；感到诧异 10.bottom n.底部；最下部
2.measurement n.数量；测量 11.waterfall n.瀑布
3.level n.高度；水平；程度 12. civilization n.文明
4.surface n.表面；表层 13. means 方式；途径
5.depth n.深（度）；纵深 14.development n.发展；壮大
6. dive v. &. n.潜水；跳水；俯冲 15. desert n. 沙漠；荒原
7.research v.& n.研究；调查 16.cubic adj.立方的
8.vessel n.大船；轮船 17. mile n.英里
9.unusual adj.特别的；寻常的 18.pool n.池塘；水坑
短语：
1. natural wonder 自然奇观 6. by the way 顺便提一下
2. square kilometre平方米 7. by all means 通过一切方式；尽一切办法；
3. in size在面积上；尺寸上 8. in the shape of以...的形状
4. sea level 海平面 9. millions of 数百万的;大量的
5. the bottom of ...的底部 10. on the surface of 在...的表面
句型：
1.By the way, do you know why it's called the Yellow River?顺便问一下，你知道它为什么叫黄河吗？
2. Both the Nile and the Yellow River helped ancient civilizations to develop.尼罗河和黄河都曾帮助古代文
明发展。
3. What is the bottom of the deep sea like?深海的底部是什么样子？
4.We should protect them by all means.我们应当竭尽全力保护它们。2.掌握形容词，副词的比较级和最高级的用法，大数字的准确表达，
一、单词默写
1. ______ n.数量；测量 6. ______ n.文明
2. ______ n.表面；表层 7. n.方式；途径
3. _____ n.深（度）；纵深 8. ______n.发展；壮大
4. ______v.& n.研究；调查 9. _____n. 沙漠；荒原
5. ______ n.底部；最下部 10. ______adj.立方的
二、词组默写
1. 自然奇观______ 4. ...的底部 ______
2. 在面积上；尺寸上______ 5. 顺 便 提 一 下 ______
3. 海平面 ______ 6. 通过一切方式；尽一切办法； ______
第一部分 Welcome to the unit
【知识梳理1】416 metres below sea level. 海平面以下416米。
1.below 介词，在…… 下方；低于。
与under的辨析：
below 在下方， 。
under 在……正下方； ，距离近。
例句：The cat is under the table. 猫在桌子正下方
注意：地理海拔描述固定用 below，不用 under：below sea level（海平面以下）/above sea level（海平面
以上）
2.固定搭配：sea level海平面
above sea level 海平面以上
at sea level 在海平面处
例：This mountain is 8848 metres above sea level.（这座山海拔8848 米）
【即时练习】
1. The valley is 300 ______ (metre) below sea level.
2. My desk is ______ (below/under) the window.
3. The ball rolled ______ (below/under) the bed.【知识梳理2】why people are researching the deep sea.人们为何研究深海。
1.research v./n. 研究；探索
动词用法：research sth. 研究某物
例：research the deep sea 研究深海 /research the animal 研究这种动物
名词用法：不可数
do research on sth. 对…… 做研究
词汇变形：researcher n. 研究者；科学家
2.the deep sea 深海
核心搭配：
explore the deep sea
the mystery of the deep sea
in the deep sea
【即时练习】
1.人们正在研究深海，因为它有很多自然资源。
People ________________________________________ because it has many natural resources.
2. 我想知道科学家们为什么研究深海。
I want to know ________________________________________.
【知识梳理3】Some animals have unusual abilities.有些动物拥有与众不同的能力。
1.unusual adj. 与众不同的；不寻常的核心变形 副词形式：
反义词：usual adj. 寻常的；普通的 副词形式 ： 通常
固定搭配：unusual abilities 特殊的能力
2.ability n. 能力；才能 复数： 形容词： 有能力的
固定搭配：be able to do sth. 能够做某事=can
【即时练习】
1. This is an ______ (usual) animal with many special ______ (ability).
2. Many children are ______ (able) to learn from these animal’s unusual abilities.
【知识梳理4】What is the bottom of the deep sea like?深海的底部是什么样子？
1.What is…like? 用于询问人 / 事物的外观、特征、样子，比如：性格、状态、性质。
辨析：What does…look like?仅询问外观 /长相 仅询问视觉上的外在外观、长相、样子。
2.bottom n. 底部；底端
the bottom of + 名词 表示 “…… 的底部”
例：the bottom of the river 河底 /the bottom of the box 盒子底部
【即时练习】
1.—______ does your father look like? —He’s tall and strong.
A. What B. Who C. How D. Which2.What ______ the students ______ like? They’re lovely and clever.
A. is; / B. are; / C. do; look D. does; look
【知识梳理5】By the way,do you know why it’s called the Yellow River?顺便问一下，你知道它为什
么被称作黄河吗？
1. By the way含义：顺便说一下；顺便问一下
例句：
By the way, I finished my homework.顺便说下，我完成了我的家庭作业。
2.why it’s called the Yellow River
（1）宾语从句的陈述语序：疑问词 why + 主语 + 谓语，不能倒装。why it’s called…
例句对比：
Why is it called the Yellow River?
宾语从句：Do you know why it is called the Yellow River?
（2）be +过去分词，被动语态：is called含义：被叫做；被称为，强调 “被人们命名”
原形：call → 过去分词：called
例句：The dog is called Lucky.
This place is called the Dead Sea.
【即时练习】
1. 顺便问一下，你知道这座山为什么叫泰山吗？
By the way, do you know why ______ ______ ______ Mount Tai?
2. 你能告诉我这条河为什么被称作母亲河吗？
Can you tell me why this river ______ ______ the Mother River?
【知识梳理6】In China,we even call the Yellow River our “mother river”!在中国，我们甚至把黄河
称作我们的 “母亲河”！
1. call + 宾语 + 名词 / 形容词,含义：把…… 称作……；认为…… 是……
Call + the Yellow River（宾语）+ our “mother river”（名词短语作宾语补足语）
主动与被动转换
主动句：We call the Yellow River our “mother river”.
被动句：The Yellow River is called our “mother river”
例句：We call him our hero.（我们称他为英雄。）
People call this animal a koala.（人们把这种动物叫作考拉。）
They call the park a green land.（他们把这个公园叫作绿地。）
【即时练习】
We call the Yellow River our “mother river”.（改为被动句）
The Yellow River ______ ______ our “mother river” by us.【知识梳理7】We should protect them by all means.我们应当竭尽全力保护它们。
1.by all means 固定短语，含义：无论如何；务必；竭尽全力；means，单复数同形。
例句：
We must keep the environment clean by all means. 。
by no means ：绝不，一点也不（表示否定）
例：This is by no means a good idea. 这绝不是个好主意。
【即时练习】
我们应该竭尽全力保护这些河流。
【知识梳理8】helped in the development of ancient civilizations 助力古代文明发展
1. development n. 发展；发育；开发
动词原形： v. 发展；壮大；养成
例句：develop a good habit 养成好习惯；
develop the economy 发展经济
固定结构：the development of… …… 的发展，这是无生命事物的所有格形式。
2.civilization n. 文明。可数名词，复数形式：
搭配：Chinese civilization 中华文明；
ancient river civilizations 古代河流文明
【即时练习】
1. The river helped in the ______ (develop) of ancient civilizations.
2. We should ______ (development) our traditional culture.
3. There are many ancient ______ (civilization) in the world.
第二部分 Grammar 形容词、副词的比较级和最高级，大数字的表达。
【知识梳理1】比较级的用法
1.比较级的常见结构：
结构及用法 例句
A + be + 形容词比较级 + than + B 表示 The Yellow River is longer than this river.黄河比这条河
“A 比 B 更……”。 更长。
The +比较级...,the+ 比较级.. The harder you work, the better grades you will get.你越
表示“越...就越... 努力，成绩就会越好。
比较级 + and + 比较级表示 “越来
越……”。 The weather is getting colder and colder.天气越来越冷
注意:若为多音节词的比较级，则用“more and 了。
more+形容词原级”表示“越来越...
A+be/动词+比较级+than any other+可数名词单 He did better in math than any other boy in his结构及用法 例句
数 class.
他在数学方面做得比他们班里其他男孩好。
表示*几倍于..."时，用*倍数+比较级+than”结 Your room is three times bigger than mine.
构。 你的房间是我的三倍大。
【即时练习】
1．Our city is developing (quickly) than before.
2．The weather got even (bad) than we expected.
3．If you want (run) (fast) than him, you need (practise) every day.
4．The (early) children learn to look after themselves, the better it is for their future.
【知识梳理2】最高级的用法
1.表示三者或三者以上的人或物进行比较时，用最高级形式。形容词最高级前必须加定冠词the,副词最高
级前可以不加。
2.最高级的常见结构：
结构及用法 例句
He is the tallest of the three boys.
A+be/动词+the+最高级+of/in/among+比较范围
他是三个男孩中最高的一个。
A+be+one of +the+最高级+名词复数 He is one of the best players in the school.
表示“A是...中最...之一 他是学校里最优秀的球员之一。
表示在三者或三者以上的人或物中进行选择时，用 Which city is the most beautiful,Beijing,Shanghai or
句型: Fuzhou?
Which/Who+be/动词+the+最高级，A，B or C? 哪个城市是最漂亮的？北京，上海，福州？
The Nile is the first longest river in the world.
the+序数词+最高级 表示"第几最...“”
尼罗河是世界上最长的河流。
【即时练习】
1．This film is ________ than that one, but it is not ________ interesting film I have ever seen.
A．more funny; the most B．funnier; a most C．funnier; the most D．more
funny; a most
2．Mount Tai is one of ________ mountains in China. Many tourists visit it every year.
A．famous B．more famous C．most famous D．the most famous
3．—Who got the first place in the running competition in your school?
—Nancy. She ran the ________ of all the students in our school.
A．slowest B．fastest C．slower D．faster
4．—Which season do you like ________, spring, summer, autumn or winter?
—Autumn. The weather is cool and the scenery is beautiful.
A．well B．better C．best D．the best
5．Are you sure he practiced ________ times as the other members? He dances worse than ________ in the team.A．as many; any other member B．as much; any member
C．more; any of the other members D．more; all the members
【知识梳理3】大数字的表达
1.万位及以上数字的表达
英语中没有“万”的单词。需要通过千来换算，1万=10千
基础结构：万位数字=千位及以上数字+thousand+剩余三位数字。
10，000→ten thousand
25,000→twenty-five thousand
123,456→one hundred and twenty-three thousand ,four hundred and fifty-six.
注意：thousand 前有具体数字时，不加s。
千位与后面三位数之间不加and，但三位数内部如（456）的“百位与十位/个位”之间需加and，也可省略。
2.百万位的数字表达
结构为：数字+million。
2，300,000→two million，three hundred thousand。
【即时练习】
1．Our teacher always allows us ________ a long break after two ________ minutes’ study.
A．to take; hundred B．to take; hundreds
C．taking; hundred D．taking; hundreds
2．Every year, many people give away ________ books to the children in poor areas.
A．million B．millions C．millions of
3．The beautiful golden ginkgo forest(银杏林) in Kunming brings ________ people to take pictures and enjoy the
scenery.
A．thousand of B．thousands of C．a thousand of D．three thousands
4．________ of children took part in the Chinese Maths Competitions, but only two ________ of them entered the
second round.
A．Thousand; hundred B．Thousands; hundred
C．Thousand; hundreds D．Thousands; hundreds
一、用所给单词的适当形式填空。
1. The ______ (explore) who ______ (discover) the new species last year is now writing a book about it.
2. The ______ (deep) we go into the forest, the ______ (amaze) plants we’ll find.
3. He spent three hours ______ (research) the ______ (history) event for his project.
4. There are many ______ (danger) animals in the ______ (south) part of the country.
5. The team ______ (be) determined to finish the task, and each member ______ (work) hard every day.二、根据汉语意思完成句子
1. 它流程最远，长约6300公里。
It travels ______ ______ and is about ______ ______ long.
2. 黄河长5464公里，是第二长的（河流）。
The Yellow River is ______ ______ long and is ______ ______ ______.
3. 顺便问一下，你知道它为什么叫黄河吗？
______ ______ ______，do you know why it's ______ ______ ______ ______?
4. 这条河的一些河段携带棕黄色的泥土。
Some parts of the river ______ ______ ______ ______ ______.
5. 尼罗河和黄河都助力了古代文明的发展。
______ the Nile and the Yellow River ______ ancient civilizations to develop.
6. 在地球上最高的地方，你会感觉仿佛能触摸到天空。
On ______ ______ ______ on earth, you will ______ ______ you are able to touch the sky.
一、单项选择
1．—Is that your brother?
—Yes. My brother is ________ than me, but I’m as ________ as him. We both need to eat more healthy food.
A．thinner; taller B．thinner; tall C．thin; taller D．thinnest; tall
2．—The price of petrol (汽油) is not ________ that of last year.
—Exactly! And some people plan to buy new energy cars instead.
A．as good as B．as expensive as C．as high as D．as low as
3．Ms Lee is even ________ than my father with me in learning. She asks me to do some reading even before the
bed!
A．strictest B．most scared C．stricter D．more scared
4．Digital technology has made our life ________ than it was ten years ago.
A．convenient B．more convenient
C．most convenient D．the most convenient
5．—Which would you like to choose, reading in a car or reading in the bed?
—Neither. But if I do have to choose, I prefer reading in a car. Because it is ________ to my eyes.
A．more harmful B．less harmful C．the most harmful D．harmful
6．I think computers will be ________in the future.
A．cheap and cheap B．cheaper and cheaper
C．more and more cheap D．the cheaper
7．The number of giant pandas is becoming ________ because there are ________ bamboo forests for them.A．fewer and fewer; less and less B．fewer and fewer; smaller and smaller
C．smaller and smaller; fewer and fewer D．smaller and smaller; less and less
8．—Can you tell me how to get a ________ grade?
—Don’t be nervous. ________ you write, the better your grade will be.
A．satisfied; The more careful B．satisfying; The more careful
C．satisfying; The more carefully D．satisfied; The more carefully
9．Mike is more hard-working than ________ in his class and he always gets better grades.
A．any other student B．any student C．the other student D．other
students
10．—Canada is one of the largest ________ in the world.
—Yes, it is larger than ________ country in Asia.
A．country; any other B．countries; any other C．countries; any
11．—Which river is ________, the Yangtze River or the Yellow River?
—The Yangtze River. It is the third ________ river in the world.
A．longest; long B．longer; long C．longer; longest
12．My computer is ________ cheaper than ________.
A．more; Jack’s B．much; Jack’s C．more; Jack D．much; Jack
13．The ________ moment for the astronaut was when he saw the Earth from space for the first time.
A．prouder B．proudest C．most proud
14．—Among all the traditional Chinese operas, which one do you think is ________?
—Beijing Opera. Its colorful costumes (服装) and wonderful singing are really amazing.
A．more fantastic B．the most fantastic C．fantastically D．the most fantastically
15．The Palace Museum is one of ________ attractions in Beijing, with ________ everything.
A．famous, a bit B．more famous, a bit
C．most famous, a bit of D．the most famous, a bit of
16．—Which river is ________, the Changjiang River or the Yellow River?
—The Changjiang River. It is the third ________ river in the world.
A．long, longer B．longer, longest
C．longest, longest D．longer, long
17．Mike lives________ from school of all the students, so he always takes a bus to school.
A．far B．farther C．the farthest
18．—You look worried. Did you finish your project?
—Yes, but I think I did it ________ among all my classmates. I made many small mistakes.
A．more carefully B．less carefully
C．the most carefully D．the least carefully
19．Which movie theater do you like ________, Dream Cinema, Town Cinema or Wonder Cinema?A．better B．best C．well D．much
20．—Mike runs faster than ________ in his class.
—You’re right. He is a member of the school race team.
A．the other boy B．any other boy C．any boys
二、完形填空
Victoria Falls is one of the world’s greatest natural wonders. The first European to see the 1 was
David Livingstone in November of 1855. However, some other reports showed that other foreigners had 2
the falls before him. He 3 the site Victoria Falls in honour of (为纪念……) Queen Victoria, and the island
was called Livingstone Island after him.
People think Victoria Falls as the 4 waterfall in the whole world as it has the widest area of falling
water in the world. The falls have become a very 5 place for visitors.
The river after the falls provides the place for riverboarding and white-water rafting (漂流) for beginners, as
well as for those who have experience and are 6 the activities. Every year, lots of visitors 7 these
exciting activities there.
Bungee jumpers also feel very 8 around Victoria Falls. They can 9 down 111 metres off the
bridge by the falls, and it was just recently named the highest bungee jump in the world. Besides, 10 can
also enjoy bird watching, air trips, walking paths, and shopping. You will be certain to enjoy your trip there.
1．A．trees B．stones C．books D．falls
2．A．visited B．decided C．noticed D．trained
3．A．needed B．named C．hoped D．asked
4．A．tallest B．longest C．widest D．thinnest
5．A．popular B．strange C．nervous D．bright
6．A．afraid of B．famous for C．sure about D．good at
7．A．hit B．try C．put D．lie
8．A．bored B．scared C．excited D．worried
9．A．jump B．turn C．look D．write
10．A．doctors B．singers C．teachers D．tourists
三、语法填空
The Sahara Desert is in the north of Africa. It is the 1 (large) desert in the world, covering about
9,320,000 square kilometers. Life there in the past 2 (be) much more difficult for humans than in other
places because it was hard 3 (grow) plants and find water there.
The Sahara Desert 4 (have) one of the most terrible living conditions on Earth. It is very hot 5
dry all year round. The highest temperature there once 6 (reach) 58℃. Camels are the most useful means
of transportation (交通工具) for people in the Sahara Desert. They are called “ships of the desert”.
Oil is one of the richest mineral resources (矿产资源) in the Sahara Desert. After the people there found it,
they started to sell it 7 other countries. Then they had money to build roads and houses in the desert. Butthe living conditions in the Sahara Desert are still hard now. And people were worried about the conditions getting
8 (bad). So the government has tried hard to plant trees in the past few years. They also had some educational
programs to let people know the 9 (important) of saving water. As 10 result, the Sahara Desert
became much more beautiful than before.
The Sahara Desert reminds us that nature is just as important as humans. So we should try our best to protect
the natural world.
四、阅读理解
The Aurora Borealis(北极光), also known as the Northern Lights, is one of the most breathtaking natural
wonders on Earth. This celestial phenomenon occurs in the polar regions, where charged particles from the sun
collide with gases in the Earth’s atmosphere, creating a dazzling display of colored lights that dance across the
night sky.
Experiencing the Northern Lights is a once-in-a-lifetime event for many people. To fully appreciate this
wonder, it’s important to approach it with patience and an open mind. The lights are unpredictable—they may
appear suddenly and fade away just as quickly, or they may linger for hours, painting the sky in shades of green,
purple, and pink.
Communicating with this natural wonder means more than just watching it. It involves feeling the cold air on
your skin, listening to the silence of the Arctic night, and marveling at the sheer power of the sun’s energy. Many
who have witnessed the Northern Lights describe it as a spiritual experience, one that makes them feel connected to
the universe in a profound way.
Protecting the Northern Lights and their habitat is crucial. Light pollution from cities and human activities
can dim the visibility of the lights, making it harder to see them. By reducing light pollution and preserving the
Arctic environment, we can ensure that future generations will also have the chance to witness this amazing natural
phenomenon.
1．What causes the Northern Lights?
A．Collisions between charged particles and atmospheric gases.
B．Volcanic eruptions in the polar regions.
C．Lightning storms in the Arctic.
D．Human activities in the polar areas.
2．Why is patience important when experiencing the Northern Lights?
A．Because the lights are always visible.
B．Because the lights are unpredictable.
C．Because the Arctic is very cold.
D．Because the trip to see them is long.
3．What does communicating with the Northern Lights involve?
A．Taking photos only. B．Feeling, listening, and marveling.
C．Talking to other visitors. D．Studying astronomy books.
4．What threatens the visibility of the Northern Lights?A．Climate change. B．Light pollution and human activities.
C．Wildlife in the Arctic. D．Lack of snow.
5．What is the main idea of the passage?
A．The history of the Northern Lights.
B．How to photograph the Northern Lights.
C．The experience and protection of the Northern Lights.
D．The best time to see the Northern Lights.
