资源简介

(共51张PPT)
Unit4: The Wonders of Nature
Why do we explore nature
八下英语RJ
第4-6课时: Section B (1a-reading plus)
What is the highest mountain in the world
Warm up
Mount Qomolangma
1a
Pre-reading
What do you know about Mount Qomolangma
Tell a partner.
View and predict
Two groups of Chinese team climbed the Mount Qomolangma.
Mount Qomolangma is the highest mountain in the world. It is 8,848.86 metres high. It’s located on the China-Nepal border. It’s part of the Himalayas. It is famous for its extreme conditions.
The first people to reach the top were Tenzing Norgay and Edmund Hillary on 29 May 1953. The first Chinese team did so in 1960, while the first woman to succeed was Junko Tabei from Japan in 1975.
While-reading
1b
Scan the article to find the information below.
Scanning
You can
read a text quickly to find specific information
(特定信息), such as numbers, years, names, and places. Numbers and years are usually in Arabic numerals, while names and places usually start with capital letters.
1._________________ : what climbers(登山者) called the way up the northern side of the mountain
2._________________ : the distance between the Second Step and sea level
3._________________ : the year the first Chinese team reached the top of Qomolangma
4._________________ : the height of Qomolangma in 2020
The “Death Road”
8,600 metres
In 1960
8,848.86 metres
the distance between... and...
……和……之间的距离
While-reading
1b
Text analysis
Reaching New Heights
To most people, Mount Qomolangma is one of the greatest wonders of the world. On the highest place on earth, you will feel like you are able to touch the sky. But only the best climbers reach the top, and that is only if they survive the terrible conditions first. On the mountain, temperatures can fall to -30 degrees. Climbers must also deal with thin air, high cliffs, and changeable weather.
Before 1960, no one was able to reach the top of Qomolangma from the northern side. Mountain climbers even called that way the “Death Road”, but a Chinese climbing team was determined to make the climb.
On 24 May 1960, climbers Liu Lianman, Wang Fuzhou, Qu Yinhua, and Gongbu arrived at the Second Step. It was 8,600 metres above sea level. People said it was so high that even birds could not reach it. Liu allowed his teammates to step on his shoulders. Bit by bit, the climbers pulled themselves up, and they made it past the Second Step. At 4:20 a.m. on 25 May, the Chinese national flag flew above the world’s highest mountain for the first time.
one of the+形容词最高级+可数名词复数 最……的……之一
感觉像；给……的感觉；感受到； 其后可接名词、动词-ing形式或从句
be able to do sth 能够做某事
“ 只有……才 ”，引导条件状语从句
在这里说明主语that（reach the top）成立的前提条件
处理；对付
多变的天气
be determined to do sth 决心做某事
so... that 如此……以至于
allow sb to do sth 允许某人做某事
on one’s shoulders 在某人的肩膀上
一点一点地；逐渐地
①获得成功②（尤指在困难情况下）准时到达
第一次
In 1975, another Chinese team climbed to the top of Qomolangma to do research. This time, they brought a ladder to the Second Step. Until 2007, almost all climbers from the northern side used this “Chinese Ladder” to reach the top much faster. In 2020, a Chinese research team went to Qomolangma to measure its height—8,848.86 metres.
Climbing Qomolangma is dangerous. Some climbers reach the top successfully, but many fail. Why do people still risk their lives to climb the highest mountain in the world It is because human curiosity and ambition cannot be stopped. Or, as the English explorer George Mallory put it, it is simply “because it’s there”!
While-reading
1b
Text analysis
Reaching New Heights
use sth to do sth 使用/利用某物做某事
risk one’s life to do sth 冒着生命危险做某事
put 说；表达
as sb puts it 正如某人所言
put simply 简单地说
put it another way 换个说法
Language points
(1) What climbers called the way up the northern side of the mountain 登山者对珠峰北坡登山路线的称呼
northern adj. 北部的；向北的
表示方位的名词，在词尾加-ern 可构成形容词。如
east+-ern→eastern （东部的；向东的） west+-ern→western （西部的；向西的）
south+-ern→southern （南部的；向南的）
Tom lives in the northern part of America. 汤姆住在美国的北部。
方位
south n.南，南方
north n.北，北方
west n.西，西方
east n.东，东方
southeast n.东南
southwest n.西南
northwest n.西北
northeast n.东北
Language points
living/housing/working conditions 生活/住房/工作条件
(2)But only the best climbers reach the top, and that is only if they survive the terrible conditions first.
但只有最优秀的登山者才能登顶，而前提是他们要在恶劣的环境中存活下来。
condition n.
①环境；条件 常用复数形式。
The climbers suffered from bad working conditions.登山队员们饱受恶劣工作条件之苦。
in bad/good/excellent condition 处于糟糕的/良好的/极佳的状态 out of condition 健康状况不佳
②[不可数名词] 状态；状况；健康状况
The car is in excellent condition. 这辆汽车的车况好极了。
He is overweight and out of condition. 他体重超重，健康状况不佳。
Language points
(3)Mountain climbers even called that way the “Death Road”, but a Chinese climbing team was determined to make the climb.
登山者甚至称那条路线为“死亡之路”，但一支中国登山队决心完成这次攀登。
death n. 死亡；毁灭；破灭
death, die, dead与dying
单词 词性 词义 功能
death 名词 死亡；毁灭；破灭 在句中作主语或宾语
die
dead
dying
辨析
动词
死亡；消失
非延续性动词，不能与表示一段时间的状语连用，其过去式、过去分词均为died，动词-ing 形式为dying
形容词
不运行的；死的
强调状态，可以与表示一段时间的状语连用
形容词
垂死的；临死的
在在句中作定语
The vet tried to save the dying dog, but it finally died. Now the dead dog lies quietly, and its death makes the little girl very sad. 兽医努力拯救那只垂死的狗，但它最终还是死了。现在那只死去的狗静静地躺着，它的死亡让这个小女孩非常伤心。
Language points
(4) Why do people still risk their lives to climb the highest mountain in the world 为什么人们仍然冒着生命危险去攀登这座世界最高峰？
risk ① v. 使……冒风险（或面临危险）其后可接名词（短语）、代词或动词-ing 形式作宾语.
risk one’s life 冒着生命危险
risk doing sth 冒险做某事
The fireman risked his life to save the child.
这个消防队员冒着生命危险去救那个孩子。
We’d better not risk travelling in these bad conditions.
我们最好不要在这种糟糕的条件下冒险出行。
搭配
risk ② n.危险；风险
the risk of... ……的风险
take risks/a risk 冒险
Smoking can increase the risk of heart problems.
吸烟会增加患心脏病的风险。
Don’t take risks. And you should think twice.
不要冒险。你应该三思。
risky adj. 有危险（或风险）的
Doctors say it’s too risky to do the operation. 医生说动手术风险太大。
搭配
拓展
Language points
(5) It is because human curiosity and ambition cannot be stopped. 这是因为人类的好奇心和雄心壮志是无法被阻挡的。
curiosity n. 好奇心；求知欲
out of curiosity 出于好奇
Children show curiosity about everything. 儿童对一切事物都显露出好奇心。
I opened the old box out of curiosity. 我出于好奇打开了那个旧盒子。
curious adj. 好奇的；求知欲强的 curiously adv.好奇地
be curious about 对……好奇
搭配
拓展
ambition n. 追求的目标；野心；雄心
ambition to do sth/ambition of doing sth 做某事的志向/抱负
His ambition is to travel around the world. 他的理想是环游世界。
He finally achieved his ambition of becoming a programmer.
他最终实现了当程序设计员的夙愿。
ambitious adj. 有野心的；有雄心的
He is an ambitious young man full of enthusiasm and vitality.
他是个充满热情与活力的有远大抱负的青年。
搭配
拓展
While-reading
1c
Read the article again. Match the paragraphs with the main ideas.
Paragraphs 1 and 2
Paragraphs 3 and 4
Paragraph 5
A. Achievements of Chinese teams
B. Reasons for climbing Qomolangma
C. Difficulties and dangers
While-reading
1c
Read the passage carefully and answer the questions.
1. What are the difficulties and dangers of Qomolangma
2. What’re the achievements Chinese team once made
3. Why do people risk their lives to climb the highest mountain in the world
Temperatures can fall to -30 degrees. Climbers must also deal with thin air, high cliffs, and changeable weather.
Before 1960, no one was able to reach the top of Qomolangma from the northern side. Mountain climbers even call that way the “Death Road”.
①At 4:20 a.m. on 25 May 1960, the Chinese national flag
flew above the world’s highest mountain for the first time.
②In 1975, another Chinese team climbed to the top of Qomolangma to do research. They brought a ladder to the Second Step.
③In 2020, a Chinese research team returned to Qomolangma to measure its height—8,848.86 metres.
It is because human curiosity and ambition cannot be stopped and it is simply “because it’s there”!
While-reading
1d
Read again. Circle T for true or F for false.
Then correct the false statements.
1. A few climbers reached the top of Qomolangma from the northern side before 1960.
2. In 1960, Liu Lianman’s teammates used a ladder to get past the Second Step.
3. The Chinese team brought a national flag to the top of Qomolangma in 1960.
4. The “Chinese Ladder” was placed at 8,600 metres above sea level.
5. Climbers first started to use the “Chinese Ladder” in 2007.
In 1960, Liu Lianman’s teammates stepped on his shoulders to get past the Second Step.
No one was able to reach the top of Qomolangma from the northern side before 1960.
Climbers first started to use the “Chinese Ladder” in 1975.
T F
T F
T F
T F
T F
Post-reading
1e
Discuss the questions.
1. How do you think the Chinese climbers felt when they placed(放置，安放) the national flag on top of Qomolangma
2.What do you think George Mallory meant by “because it’s there”
3.What qualities do you think a good mountain climber needs to have
I think they felt very proud and excited.
He doesn’t have complicated(复杂的)reasons for climbing it.
The mountain is just there, and that’s enough to make him want to reach its top.
For him, climbing Mount Qomolangma is a choice driven by curiosity and ambition, not for money or fame(名望).
A good mountain climber needs to have both a strong body and a strong mind.
A good mountain climber needs to have team spirit.
Preview
Review and retell the text
Reaching New Heights
Preview
Review and retell the text
Reaching New Heights
1. 死亡之路 2. 登顶
3. terrible condition 4. bit by bit
5. 做研究 6. 冒着生命危险
7. changeable weather
II. 用括号内所给单词的适当形式填空
1. It often snows in the (north) part of China in winter.
2. Luckily, all the people (survive) the terrible accident last week.
3.The weather here is (change) in spring — sometimes sunny,
sometimes rainy.
4. The (determine) boy never gives up when he faces difficulties.
5. The doctors (success) saved the sick child's life last night.
基础巩固
I. 写出下列短语的中文或英文释义
Exercises
Death Road
reach the top
糟糕的状况
逐渐地
do research
risk one's life
多变的天气
northern
survived
changeable
determined
successfully
III. 单项选择
( )1. During the heavy rainstorm, the little bird by hiding under a big tree.
A. live B. survived C. spent D. alive
( )2. The weather in spring is always .
It can be sunny in the morning but rainy in the afternoon.
A. changeable B. comfortable C. dangerous D. beautiful
( )3. He to save his daughter from drowning.
A. the risk of losing his life B. take a risk of his life
C. risked his life D. risk losing his life
( )4. The little girl her mind and decided to stay at home with her mum.
A. changed B. turned C. makes D. keeps
( )5. After months of practice, she finally passing the driving test.
A. succeeded in B. succeeded to C. achieved in D. achieved to
基础巩固
Exercises
B
A
C
A
A
Homework
Master the new words and language points.
Listen, read and retell the story.
Vocabulary in use
2a
Match the words on the left with their opposites on the right.
A. safe E. unusual
B. bottom F. living
C. southern G. high
D. above H. die
南部的；向南的
____ 1.below ____ 2.common
____ 3.low ____ 4.dead
____ 5.top ____ 6.northern
____ 7.risky ____ 8.survive
D
E
G
F
B
C
A
H
Vocabulary in use
2b
Read the examples and make more sentences using how and the words in the box.
How far is it from your home to school How heavy is a blue whale
How large is your country How often do you exercise
询问路程或距离
询问重量
询问面积或规模
询问频率
1 .
2 .
3 .
4 .
5 .
6 .
long high deep old fast soon
How long is the Yellow River
How high is Mount Taishan in Shandong
How old is your grandfather
How fast can a giraffe run
How soon will the rainy season start in this area
How deep is the Mariana Trench
Vocabulary in use
2c
Complete the passage with the correct forms of the words in the box.
deep survive wonderful surface dive
Located in Siberia, Russia, Lake Baikal is one of the world’s most famous lakes. It is the________ freshwater lake in the world. To reach the bottom, you must_______ 1,620 metres! It is also larger than most other lakes. Its_________ covers 31,500 square kilometres. That is bigger than the country of Belgium! Lake Baikal is cold most of the year. But over 1,200 different types of animals can still ________ in this environment. Today, the lake still attracts many curious travellers. After all, it is a great natural
_________!
位于
西伯利亚
贝尔加湖
淡水湖
deepest
dive
占（一片面积)
surface
比利时
不同种类的……
survive
吸引；招引
好奇的；求知欲强的
旅行者；游客
毕竟；终归
自然的；天然的；天生的
wonder
While-reading
3a
Read the advertisement. Circle the numbers and underline the adjectives used to describe the Great Barrier Reef.
大堡礁
水下世界
Do you love the ocean Do you want to visit one of the natural wonders of the world If so, visit the Great Barrier Reef!
Located on the northeastern coast of Australia, the Great Barrier Reef is one of the most amazing places to visit. It is the biggest coral reef in the world. It takes up an area of 345,000 square kilometres and includes many islands and white sand beaches.
The Great Barrier Reef is also alive! If you visit it, you will see the largest living structure on earth. Here, you can swim or dive in the clear water and see coral, plants, and colourful fish.
If you dive deeper, you might even see large fish, turtles, and sharks. For people
who love the ocean, visiting the Great Barrier Reef is the dream of a lifetime!
if so 如果是这样的话；要是这样 是“if it is so”的省略形式，表示肯定意义；如果表示否定意义，则用if not。
东北海岸
占用（时间）；占据（空间)
沙子；沙滩
活体结构
海龟；龟
一生的
persuasive(可信的) and impactful (有冲击力的)
more vivid(生动的) and more attractive
While-reading
3a
Read the text again and fill in the key information.
What
Where
Special fact
Things to do
on the northeastern coast of Australia
the Great Barrier Reef
1. the biggest coral reef →an area of 345,000 km2
2. alive→the largest living structure on earth
1. swim or dive in the clear water
2. see coral, plants, and colourful fish; dive deeper→even see large fish, turtles & sharks
What does an advertisement for natural wonders consist of
Post-reading
3b
Read a student’s notes on Qinghai Lake. Rewrite them in full sentences.
Qinghai Lake
What: a salt lake
Where: Qinghai Province, China
Special fact: the largest lake in China
(4,340 km )
Things to do: photograph wildlife (fish and birds), visit islands, ride a bike or horse
咸水湖
拍摄
salt lake
Qinghai Province, China
the largest lake
4, 340 square kilometres
photograph wildlife (fish and birds),
visit islands, ride a bike or horse
Post-reading
3c
Write an advertisement(广告) for Qinghai Lake or another natural wonder. Try to make your advertisement as persuasive(有说服力的) as possible.
Post-reading
3c
Write an advertisement for Qinghai Lake or another natural wonder. Try to make your advertisement as persuasive as possible.
For example
Looking for an amazing summer trip Come to Qinghai Lake in
Qinghai Province—China’s largest salt lake, covering 4,340 square
kilometres!
Located at about 3,200 metres above sea level, it’s much higher than
any lake you’ve ever seen.
The lake’s water is the clearest and bluest you’ll ever see. It’s more beautiful than a thousand painted pictures.
Here, you can get close to amazing wildlife. There are hundreds of different kinds of fishes swimming in the lake and thousands of colourful birds flying above. You’ll have the best chance to take amazing photos.
For outdoor fun, you can ride bikes or horses along the lake. It’s a longer and more exciting ride than anywhere else nearby.
This is the best place to relax and have fun. Don’t miss it—Qinghai Lake is waiting for you!
基础巩固
单项选择
Exercises
( )1. --- is your country --- It is about 9.6 million square kilometres.
A. How long B. How large C. How deep D. How high
( )2. The city is building a new airport in its area to improve transportation.
A. northeastern B. north C. northeast D. east
( )3. Little Tom is always the stars at night,
he often asks his dad why they shine so bright.
A. curious about B. afraid of C. good at D. tired of
( )4. After the fire was put out, the firefighters were happy to find that
the little dog was still .
A. live B. alive C. lively D. living
( )5. Our school sports meeting has many interesting activities， running,
jumping and ball games.
A. include B. including C. included D. includes
B
A
A
B
B
Exercises
基础巩固
The ocean is a very big and wonderful place. Its 1. is full of life. You can see many colourful fish swimming there, and some small plants float on the water. The sun shines brightly, making the surface warm and light.
But if you go 2. into the ocean, things change a lot. It grows dark because the sun can't reach there, and the water becomes very cold, Even so, some special animals can 3. in this harsh enviroment. They have unique ways to live — like being able to find food in the dark.
The ocean is an important part of our 4. . It helps keep the air clean and gives homes to millions of creatures. From the bright surface to the dark deep, there's life everywhere. It's amazing to think about how all these animals survive in such different conditions!
用方框中所给单词填空
surface deep environment survive
surface
deep
survive
environment
While-writing
介绍某一自然奇观
话题概述
范畴: 人与自然
主题群: 自然生态
子主题内容: 不同地区的生态特征与自然景观
本单元的话题是“自然奇观”，与此相关的写作一般是描述某个奇特的自然景观。写作时，可以先谈这个景观的位置，然后描写该景观的主要特点，最后表达对该景观的感受。
While-writing
阶段一：审题立意
经典例题
中国西藏的雅鲁藏布大峡谷（The Yarlung Zangbo Grand Canyon）不仅是世界上最长的峡谷，还是世界上最深的峡谷。请你根据下列内容提示，写一篇80词左右的英语短文，简要介绍一下雅鲁藏布大峡谷。
文体: ________________ 人称: ________________ 时态: ________________
说明文
第三人称
一般现在时
要点：
1. 介绍地理情况
2. 描述其生态地位
3. 说明最佳游览季节
内容提示：
◆长度：504.6 千米，比美国大峡谷
（Grand Canyon）长约57 千米
◆深度：6 009 米（最深处）
◆美誉：植物博物馆（the plant museum）
动物王国（the animal kingdom）
◆最佳旅游季节：春、夏
While-writing
经典例题
阶段二：谋篇布局
开篇点题 The Yarlung Zangbo Grand Canyon is one of the greatest natural wonders...
具体介绍 The Yarlung Zangbo Grand Canyon is not only... but also...
It is... kilometres long, ... longer than...
Its maximum depth reaches...
The Yarlung Zangbo Grand Canyon is home to...
表达感受 The best time to visit the Yarlung Zangbo Grand Canyon is...
For people who... is the dream of a lifetime!
While-writing
经典例题
阶段三：积句成篇
开头句 1. Located in..., ... is one of the world’s biggest/deepest/most famous...
2. Would you like to visit one of the natural wonders of the world
中间句 1. It takes up/covers an area of... square kilometres.
2. It’s... square kilometres in size.
3. Lots of tourists are amazed at the beauty of...
4. ... is not only the longest but also the deepest... in the world.
5. ... is home to thousands of plants and animals.
6. When you..., you will feel like you are...
7. If you pay a visit to..., you will/can...
结尾句 1. The best time to visit it is in...
2. What a(n) wonderful/amazing/excellent place it is!
3. All in all, it’s such a wonderful place that you can’t miss it.
4. For people who love/are interested in..., visiting... is the dream of a lifetime!
名言警句 1. The mountain is the book of the earth, and the story of the ages.
山是大地之书，是时代的故事。
2. The landscape in Guilin is the best under heaven. 桂林山水甲天下。
3. Nature makes us wonder! 大自然让我们惊叹！
While-writing
经典例题
阶段四：范文欣赏
The Yarlung Zangbo Grand Canyon is one of the greatest natural wonders, located in Xizang, China.
The Yarlung Zangbo Grand Canyon is not only the world’s longest but also the world’s deepest canyon.
It is 504.6 kilometres long, about 57 kilometres longer than the Grand Canyon in the US. Its maximum depth reaches 6,009 metres. The Yarlung Zangbo Grand Canyon is home to so many plants and animals that it’s called the “plant museum” and the “animal kingdom”.
The best time to visit the Yarlung Zangbo Grand Canyon is in spring and summer. For people who love the canyon, visiting the Yarlung Zangbo Grand Canyon is the dream of a lifetime!
用“one of the+形容词最高级+可数名词复数”
表明雅鲁藏布大峡谷“世界级自然奇观”的属性
用“not only... but also...”介绍雅鲁藏布大峡谷的地理情况
用“so... That”描述雅鲁藏布大峡谷的生态地位
用who 引导的定语从句及动名词短语作主语表明雅鲁藏布大峡谷对于峡谷爱好者的意义
阅读关于黄山的笔记，为黄山撰写一则广告。 (1)What：一座拥有独特景致的世界闻名的山脉；
(2)Where：中国安徽省； (3)Special fact：以奇松，怪石，云海著称；
(4)Things to do：登山赏景，游览古寺(ancient temples)，拍摄美丽的自然风光(natural landscapes).
要求： 1. 描述黄山并阐释人们为何应去此地游览； 2. 尽量让你的广告具有说服力；
3. 字数在60~80; 4. 开头已给出，不算入总字数。
拓展探究
书面表达
Exercises
Do you want to visit one of the natural wonders of Anhui If so, visit the Mount Huang.
Located in Anhui Province, China, it's a world-famous mountain with unique and beautiful scenery. It's famous for its strange pines, grotesque rocks, and the magnificent sea of clouds. When you're there, you can climb the mountain to enjoy the beautiful views, visit ancient temples, and take lots of photos of the wonderful natural landscapes.
For people who love mountains, you're sure to have an unforgettable time at Mount Huang!
Homework
Listen and read the text in 3a.
Choose one natural wonder you’re interested in and collect information online. Then, write an article to introduce it.
Lead in
What natural wonders are they What special facts do you know about these natural wonders Choose one and share with us.
Mount Qomolangma
the Great Barrier Reef
the Yellow River
the Yangtze River
the Sahara Desert
the Mariana Trench
Project
4a
Design a poster about a natural wonder
Work in a group. Choose a natural wonder (a river, lake, mountain, forest, waterfall, etc.). Then do some research and make notes.
小组合作。选择一处自然奇观（河流、湖泊、山脉、森林、瀑布等）。然后进行调研并做笔记。
name
location and size
plants and animals
special facts
Project
4b
Make a poster about the natural wonder you chose. Refer to the example on the right.
What information can you get from the title and the pictures
巴西，秘鲁，哥伦比亚
肺
种类 a variety of 各种各样的
Project
4b
Read and answer the questions.
What’s the natural wonder
What size is it
What’s its location(位置)
Amazon Rainforest.
In Brazil, Peru, Colombia, and five other countries.
It’s 6 million square kilometres in size.
What special facts do you know about it
It’s world’s biggest rainforest.
It’s called “the lungs of the earth”.
It’s the largest variety of plants and animals in the world.
Project
4b
Sample poster
Huangguoshu Waterfall
the largest waterfall in China
located in Guizhou Province
101 metres wide and 77.8 metres high
roaring（咆哮的）water rushes down every second
people can walk right behind the waterfall through a natural cave
Project
4c
As a group, give a report to the class. Pay attention to the use of large numbers, comparatives, and superlatives.
The Amazon Rainforest is the
world’s biggest rainforest.
It covers 6 million square
kilometres. You can see most of
it in three countries, Brazil, Peru,
and Colombia …
Project
4c
As a group, give a report to the class. Pay attention to the use of large numbers, comparatives, and superlatives.
Sample
Good morning, class! Today we’d like to introduce you to Huangguoshu Waterfall — the largest waterfall in China.
Located in Guizhou Province, Huangguoshu Waterfall is 101 metres wide and 77.8 metres high. The main waterfall alone is much wider than many small waterfalls nearby! Every second, roaring water rushes down—it’s like a huge white curtain falling from the sky.
What makes Huangguoshu Waterfall even more special is that you can walk right behind the waterfall through a natural cave. This gives travellers a much more exciting experience than watching from a distance. Huangguoshu Waterfall attracts millions of curious travellers each year.
If you want to experience the greatest power of nature, Huangguoshu Waterfall is the best place to visit! Thank you for listening!
Reflecting
1. What new facts about natural wonders have you learnt
2. Can you make comparisons when talking about natural wonders
3.Can you use large numbers to give some geography facts
4.Can you explain how and why people connect with nature
5. What are some achievements that people have made while exploring nature
Nature makes us wonder. That is why it is wonderful.
Free talk
the Sahara Desert
What do you know about the Sahara Desert
location
size
geography
life
…
Let’s learn
Text analysis
The Sahara Desert
Located in Africa, the Sahara Desert spreads across 30 per cent of the continent. This vast desert, also known as “the great desert” in Arabic, is about 9 million square kilometres in size. It is also at least 4.6 million years old. This means that it is one of the oldest places in the world.
All deserts are dry, and the Sahara is both dry and hot. It is the largest hot desert in the world. We may think that all deserts are hot, but in fact some deserts are very cold! Many scientists believe that Antarctica, for example, is a type of cold desert.
Most of the Sahara is rocky ground. But there are also places with grass, lakes, mountains, and even sand seas. A sand sea is just what it sounds like—it looks like a sea of sand! When the wind blows, the sand looks like waves.
横跨；遍布
大陆；陆地；洲
辽阔的；巨大的
阿拉伯语
在尺寸上；在大小方面
至少
一种
岩石的；多岩石的
what引导的表语从句，说明沙海是什么样的
Let’s learn
Text analysis
The Sahara Desert
Life in the Sahara is difficult. About two million people live in the Sahara. They usually move from place to place. There is water in a few parts of the Sahara, and some people live in these places all year round.
Not many animals can live in a place with such a dry and hot climate. They must adapt to survive. Camels, for example, go for a long time without drinking water. When they do find water, they can drink more than 100 litres of it in 13 minutes! Fennec foxes live in the desert too. They have large ears to help their bodies stay cool.
Today, the world’s largest hot desert is getting even bigger. It is now about 10 per cent larger than what it was about a century ago. But why is it growing Some scientists believe that part of the reason is climate change. As temperatures rise, summers in Africa grow hotter and less rain falls. Water bodies get smaller and the ground gets drier and drier. If we do not take effective measures, the desert will keep growing!
到处；从一个地方到另一个地方
全年
不定式作目的状语，说明大耳朵的作用
适应（新情况） adapt to 适应某物
骆驼
此处的do是强调助动词，当句中无其他助动词时，用于加强语气
升
耳廓狐
百年；世纪
水体
比较级+and+比较级 越来越……
采取有效的措施
1
Practise
Read the text and complete the mind map.
Sahara Desert
Location
Growth
Life
Geography
Age
Size
in Africa
about 9 million
square kilometres
at least 4.6 million
years old
most places are rocky;
some have grass, lakes，
mountains and even sand seas
difficult
about 10 per cent larger than what it was about a century ago
2
Practise
Discuss the questions.
1. How is life in the desert different from other places where people live
2. Would you like to visit the Sahara Desert or even live there for a while Why or Why not
3. What do you think will happen if the Sahara keeps getting bigger
What should we do about it
Life in the desert is much harder. First of all, it is hard to find water, and people usually move from place to place. What’s more, the weather in the desert is very dry and hot. In other places, people usually have stable homes and enough water. The weather is better than that in the desert.
I would like to visit the Sahara Desert. Because I want to see its amazing landscapes, like sand seas and the rocky ground.
/ I don’t want to live there. Because it’s too hot and difficult to find water.
If the Sahara keeps getting bigger, I think more land will dry up, and people and animals there may lose their homes. We should take effective measures, such as reducing pollution, planting more trees, and saving water.（答案不唯一，仅供参考）
Homework
Review the words and phrases in this unit.
Polish your poster and write an article to introduce the natural wonder you’re interested in.

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