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中小学教育资源及组卷应用平台
Unit 4 Section B Reading Plus 语言点精讲精练
I．语言点精讲
1. Located in Africa, the Sahara Desert spreads across 30 per cent of the continent.
位于非洲，撒哈拉沙漠延伸至该大陆的30%。
要点1：过去分词短语作状语
用法：过去分词位于句首，表示地点或状态，表“位于非洲”，逻辑主语是the Sahara Desert，二者为被动关系。逻辑主语与句子主语一致。
长城位于亚洲，绵延至中国北方。
Located in Asia, the Great Wall stretches across northern China.
要点2：spread across
用法：意为“延伸，遍布”。
坐落在河边，这个小镇很美丽。
Located by the river, the small town is very beautiful.
这种植物遍布全国。This kind of plant spreads across the country.
This means that it is one of the oldest places in the world.
这意味着它是世界上最古老的地方之一。
要点1：This means that…
用法：意为“这意味着……”，后接宾语从句。
要点2：one of the + 形容词最高级 + 复数名词
用法：表示“最……之一”，名词用复数。
这意味着我们必须早点出发。
This means that we must set out early.
故宫是中国最著名的景点之一。
The Palace Museum is one of the most famous places in China.
We may think that all deserts are hot, but in fact some deserts are very cold!
我们可能认为所有沙漠都很热，但事实上有些沙漠非常寒冷！
要点1：We may think that…
用法：表示“我们可能认为……”，后接宾语从句。
要点2：in fact
用法：意为“事实上”，用于纠正或补充前文观点。
我们可能认为他很懒，但事实上他很勤奋。
We may think that he is lazy, but in fact he is hard-working.
他看起来很严肃，事实上他很友好。
He looks serious; in fact, he is very friendly.
A sand sea is just what it sounds like—it looks like a sea of sand! 沙海就像它听起来的那样——它看起来像一片沙的海洋！
要点1：what it sounds like
用法：表语从句，意为“就像它听起来的那样”。what在从句中作like的宾语，意为“像……的样子”。
这个公园就像它听起来的那样——春天是一片花的海洋。
This park is just what it sounds like—a sea of flowers in spring.
要点2：look like
用法：意为“看起来像”，后接名词或代词。
这个名字就像它听起来的那样——它是一个安静的地方。
The name is just what it sounds like—it is a quiet place.
这片云看起来像一只兔子。The cloud looks like a rabbit.
a sea of...：固定表达，意为“一片…的海洋”，如a sea of fire（一片火海）。
5.They must adapt to survive. 它们必须适应以求生存。
要点1：adapt to
用法：固定短语，意为“适应（环境/情况）”，后接名词，动名词，或代词。
我们必须快速适应新环境。We must adapt to the new environment quickly.
要点2：不定式表目的
用法：to do 表示“为了……”，说明动作的目的。
我们必须适应新的环境。We must adapt to the new environment.
我们种树为了保护环境。We plant trees to protect the environment.
must：情态动词，表示“必须”，语气强烈。
6.When they do find water, they can drink more than 100 litres of it in 13 minutes! 当它们真的找到水时，能在13分钟内喝下100多升水！
要点1：do + 动词原形表强调
用法：表示“确实，真的”，加强语气。
要点2：more than
用法：意为“超过，多于”。
他昨天确实完成了作业。He did finish his homework yesterday.
我有超过10本书。I have more than 10 books.
7.As temperatures rise, summers in Africa grow hotter and less rain falls. 随着气温升高，非洲的夏天变得更热，降雨量也减少。
要点：as 引导时间状语从句
用法：意为“随着……”，强调两个动作同步变化。
随着太阳升起，天空变得越来越亮。
As the sun rises, the sky becomes brighter and brighter.
随着时间流逝，我们变得越来越成熟。
As time goes by, we become more and more mature.
8.If we do not take effective measures, the desert will keep growing! 如果我们不采取有效措施，沙漠将持续扩张！
要点1：if 引导的真实条件句（主将从现）
用法：从句用一般现在时，主句用一般将来时。
要点2：keep doing sth.
用法：意为“持续做某事，一直做某事”。
如果明天不下雨，我们就去公园。
If it doesn’t rain tomorrow, we will go to the park.
雨一直下了一整天。The rain kept falling all day.
II．语言点精练
一、单词填空。请根据所给的首字母写出单词，使句子意思完整正确。
1. Most of the Sahara is r_________ ground.
2. When the wind b________, the sand looks like waves.
3. Not many animals can live in a place with such a dry and hot climate. They must a________ to survive.
4. If we do not take effective m________, the desert will keep growing!
5. This m_______that it is one of the oldest places in the world.
二、用括号内所给词的适当形式填空。
1. This vast desert, also________(know) as "the great desert" in Arabic.
2. The Sahara is __________(large) hot desert in the world.
3. Camels, for example, go for a long time without ________(drink) water.
4. As temperatures rise, summers in Africa grow hotter and ________(little) rain falls.
5. A sand sea is just what it _______(sound) like—it looks like a sea of sand!
三、根据汉语意思完成句子。
1. 位于非洲，撒哈拉沙漠延伸至该大陆的30%。
Located in Africa, the Sahara Desert _______ ______ 30 per cent of the continent.
它至少也有 460 万年 的历史了。
It is also _____ _______ 4.6 million years old.
我们或许以为所有的沙漠都是炎热的，但事实上，有些沙漠非常寒冷！
We may think that all deserts are hot, but ______ ______some deserts are very cold!
4. 如今，世界上最大的热带沙漠还在不断扩大。
Today, the world's largest hot desert is getting ________ ________.
5. 他们通常从一个地方搬到另一个地方。
They usually move _______ place ________ place.
四、完形填空
Keoni's class was discussing a story about a fox who was punished for stealing(偷) nuts from an old man's house, Keoni was 1 , though, about swimming in the ocean. After school, he 2 home and jumped into the water. Keoni lived in a house on the 3 with his grandfather. Of all the things he loved about the ocean, he loved its coral reefs the 4 . He was amazed by the shapes and colours of the coral, as well as the fish and other strange sea __5 that swam around it.
Keoni 6 a small piece of coral. “That looks like a wave,” he thought. He put it away and brought it home. He collected more coral the next day, and every day after that, until his grandfather 7 what he was doing.
“Keoni, you mustn't take coral from the ocean!” his grandfather said. “Coral is 8 _, and it's also home to thousands of other sea creatures. How would you feel if someone came here and stole 9 home ”
“Why not I only took some small pieces, Grandfather.”
“What if everyone took just some small pieces ” his grandfather asked. “Soon there would be no coral left. Don't steal any more! You know, the ocean always 10 what belongs to it.”
That night, Keoni 11 about his grandfather's warning 12 he feared the ocean's power.
The next day, a 13 alarm scared him. His grandfather said,“It's a tsunami. We must go up the hill.” He and his grandfather raced to 14 ground with their neighbours.
An hour later, from his uncle's safe house, Keoni watched 15 as the huge wave hit the beach.“The ocean punished me and took back what I stole,” he said.
( )1. A. daydreaming B. writing C. shouting D. listening
( )2. A. walked B. rushed C. drove D. cycled
( )3. A. mountain B. beach C. forest D. river
( )4. A. least B. same C. better D. most
( )5. A. plants B. creatures C. rocks D. shells
( )6. A. drew B. discovered C. ate D. lost
( )7. A. forgot B. hid C. enjoyed D. realized
( )8. A. active B. awake C. asleep D. alive
( )9. A. my B. him C. your D. their
( )10. A. gets over B. takes back C. gives away D. puts up
( )11. A. worried B. laughed C. talked D. sang
( )12. A. but B. or C. because D. so
( )13. A. soft B. quick C. loud D. funny
( )14. A. higher B. quieter C. nearer D. drier
( )15. A. excitedly B. calmly C. nervously D. happily
五、语法填空
阅读下面短文，在空白处填入一个适当的词，或使用括号内所给单词的正确形式填空。
The Amazon Rainforest is one of the most amazing natural wonders 1.__________ the world. It is the world's 2.__________ (big) rainforest. It covers 5.5 million square kilometres. You can find it in nine different 3.__________ (country), including Brazil, Peru, and Colombia.
The Amazon is often 4.__________ (call) "the lungs of the earth" because it produces 20% of the world's oxygen. It is also home to the 5.__________ (large) variety of plants and animals on the planet. Scientists believe that there are millions of species 6.__________ (live) there.
The rainforest plays a very important role 7.__________ the global climate. It helps to regulate temperatures and rainfall patterns around the world. 8.__________ (protect) the Amazon is important for all of us.
Many people want to visit the Amazon 9.__________ (see) its beauty. They can explore the forest, watch wildlife, and learn about different cultures. However, visitors must be careful not to harm the environment.
Nature makes us wonder. That is 10.__________ it is wonderful. We should do our best to protect these amazing places for future generations.
六、阅读理解
It was a day in 2014. Xu Yitang went to an aquarium (水族馆) in Beijing with friends. At that time, he had no idea that this trip would make a difference in his life.
Xu saw some coral (珊瑚) in the aquarium. He lost himself in the beauty of it. After that day, he became interested in the natural wonder. He started visiting experienced people to learn how to grow coral. He also learned online. Later, he started to grow coral at home.
Xu was a college student then. He studied Peking Opera (京剧). He thought he would probably take on a job about Peking Opera after finishing college. But as he learned more about coral, he knew that it is very important. Coral reefs (珊瑚礁) are home to many sea animals. However, they are in great need of protection (保 护). Xu wanted to help and he did so. After finishing college, he took a job protecting the coral in Hainan.
Each day, Xu spends hours staying in the sea water to study the beautiful coral. Sometimes, he has to work late at night in the sea. It is very difficult and dangerous. Although his work is hard, he enjoys it. When he is free, he likes to share beautiful coral photos and videos online. He wants more people to take action to protect the coral and the sea.
1．What can we know about Xu
A．He studied Peking Opera before.
B．He got his first job in Beijing.
C．He learned coral protection at college.
D．He saw some coral in the aquarium in Beijing with friends in 2024.
2．The last paragraph is mainly about ________.
A．Xu’s advice B．Xu’s dream C．Xu’s work D．Xu’s hobby
3．What’s the best title for the passage
A．Be careful with your actions B．Protect the beauty in the sea
C．Don’t be afraid of differences D．A trip to an aquarium
II. 语言点精练参考答案
一、单词填空。
1. rocky 2.blows 3.adapt 4. measures 5.means
二、用所给单词的适当形式填空
1. known 2.the largest 3. drinking 4. less 5. sounds
三、根据汉语意思完成句子
1.spreads across 2.at least 3.in fact 4.even bigger 5.from; to
四、完形填空
【答案】
1—5 ABBDB 6—10 BDDCB 11—15 ACCAC
答案与解析
A. daydreaming
解析：后文提到他想着去海里游泳，说明上课时在走神、做白日梦。
B. rushed
解析：放学后迫不及待想去游泳，所以是冲回家。
B. beach
解析：能直接跳进海里游泳，说明家在海滩边。
D. most
解析：固定搭配 love…the most，表示 “最喜欢……”。
B. creatures
解析：fish 属于海洋生物，other sea creatures 指 “其他海洋生物”。
B. discovered
解析：他在海里发现了一小块珊瑚。
D. realized
解析：他每天都捡珊瑚，直到爷爷意识到他在做这件事。
D. alive
解析：珊瑚是有生命的，也是其他海洋生物的家。
C. your
解析：爷爷反问：如果有人来偷走你的家，你会怎么想？
B. takes back
解析：海洋总会收回属于它的东西，与后文海啸收回海滩相呼应。
A. worried
解析：Keoni 听了爷爷的警告，晚上很担心、不安。
C. because
解析：他担心因为害怕海洋的力量，表原因用 because。
C. loud
解析：警报声是响亮的，loud alarm 符合语境。
A. higher
解析：海啸来临时要往更高的地方跑。
C. nervously
解析：看到巨大海浪冲击海滩，他的心情是紧张不安的。
五、语法填空
1. in 2. biggest 3. countries 4. called 5. largest 6. living 7. in 8. Protecting 9. to see 10. why
答案与详细解析
in
解析：in the world 为固定搭配，意为 “在世界上”。
biggest
解析：前面有 the world's（世界上的），表示最高级含义，故用 big 的最高级 biggest。
countries
解析：前面有 nine different（九个不同的），可数名词 country 需用复数形式 countries。
called
解析：被动语态 be called，表示 “被称作、被叫做”。
largest
解析：the largest variety of… 表示 “种类最多的……”，the 后接形容词最高级 largest。
living
解析：现在分词作后置定语，species living there 意为 “生活在那里的物种”。
in
解析：固定搭配 play a role in…，表示 “在…… 中起作用”。
Protecting
解析：动词原形不能直接作主语，需用动名词 Protecting 作句子主语。
to see
解析：不定式表目的，visit… to see… 意为 “去参观…… 来欣赏……”。
why
解析：固定句型 That is why…，表示 “那就是…… 的原因”。
六、阅读理解
【答案】1．A 2．C 3．B
【解析】
【导语】本文是一篇记叙文，主要讲述了徐一唐从对珊瑚产生兴趣到投身珊瑚保护工作的故事。
1．细节理解题。根据“Xu was a college student then. He studied Peking Opera.”可知，徐一唐曾学习京剧。故选A。
2．主旨大意题。根据“Each day, Xu spends hours staying in the sea water to study the beautiful coral.”以及他分享珊瑚照片的行为可知，本段主要介绍徐一唐的日常工作内容。故选C。
3．最佳标题题。通读全文可知，全文围绕徐一唐从接触珊瑚到投身保护工作的故事展开，强调保护珊瑚
的重要性。故选B。
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Presentation
Unit4 The Wonders of Nature
Section B Why do we explore nature
Reading plus
课外阅读课公开课
单元主题范畴：人与自然
单元主题内容：自然景观、自然现象、生态保护；自然世界及其价值
(2024新版)人教版 八年级(下册)
Presentation
Learning Objectives
1.通过观看视频和图片，能够正确地回答问题，能够说出撒哈拉沙漠的基本信息；通过观看标题和图片，能够预测课文大意；能梳理文章结构，概括段落大意，完成信息表格与思维导图。（学习理解）
2.能通过略读和精读获取关键信息；能运用所学语言简单介绍撒哈拉沙漠并表达环保观点；能小组合作完成环保海报并进行简短展示。(应用实践)
3.了解撒哈拉沙漠的现状，认识自然奇观的价值，树立保护自然、对抗沙漠化的环保意识。(迁移创新)
Presentation
Watch and guess
Let’s enjoy a video and guess: What natural wonder is it
What natural
wonder is in the
video
The Sahara Desert
What do you know
about the Sahara Desert
Presentation
Think and say
What do you know about the Sahara Desert
Name
Location
Size
Special facts
The Sahara Desert (撒哈拉沙漠)
It is in northern Africa.
It is the largest hot desert in the world.
It is very dry and hot. It has beautiful sand dunes (沙丘).
Presentation
Discuss and say
What comes to your mind when talking about deserts
hot and dry
lifeless
dangerous
lonely
camel
vast
cactus
(仙人掌)
sandy
...
beautiful landscape
Presentation
Watch and say
Let’s enjoy another video and learn more about the Sahara Desert.
Presentation
Discuss and say
What do you already know about the Sahara Desert
KWL chart
What I already Konw
K
What I Want to Know
W
What I Have Learned
L
dry and hot
in Africa
the largest hot desert in the world
Camels live there
How old is it exactly
What plants and animals live there
How do people live there
......
Now we have so many interesting questions! Let’s read the text to see if we can find the answers.
Presentation
Look and predict
Look at the title , the picture and answer the questions.
Title
Picture
+
What can you see in the picture
I can see a small fox with big ears.
Why do you think it has such big ears
To help it stay cool in the hot desert!
What might the text talk about
A. The Sahara Desert is the oldest place in the world.
B. The Sahara Desert is a large, hot, and dry desert in Africa with special life and a growing problem.
C. Camels and fennec foxes are the only animals that can live in the Sahara Desert.
Presentation
Read and answer
Read the text quickly and answer
the following questions.
1.What kind of passage is it
A.Exposition(说明文)
B.Narration(记叙文）
C. Argumentation(议论文）
2. Which kind of material is this text most likely from
A. A geography book.
B. A history magazine
C. A science report
D. A tour guide
3. How many paragraphs are there
6.
Find the topic sentences of each paragraph.
Tip:
The topic sentence usually lies at the beginning or the end of a paragraph.
Presentation
Read and answer
Match the main idea with each paragraph.
The Sahara is a dry and hot desert,
and not all deserts are hot.
The Sahara Desert is a large, old
desert in Africa.
The Sahara is getting bigger because
of climate change.
Some animals like camels and fennec
foxes can adapt to the Sahara.
Life in the Sahara is hard, and
some people live there.
The Sahara has rocky ground and other landscapes like sand seas.
Presentation
Read and answer
Match the main idea with each
paragraph.
How many parts can we divide the text into
What’s the structure of this passage
A. ①/ ②③④⑤/⑥
B. ①②/ ③④/ ⑤⑥
C. ①/②③/④⑤/⑥
Part 1:Basic facts-location,size, age
Part 2: Environment-climate(气候) and landforms(地貌)
Part 3: Life in the Desert-human life and animal life
Part 3: Problem & Warning-desert growth
Three.
Presentation
Fill and choose
Read Para.1 and complete the table, then choose the right answers .
Basic facts about the Sahara Desert. Location & Size It is in __________.
It spreads across ____________ of the continent.
It is about ___________ square kilometres in size.
Age - It is at least ____________ years old.
Africa
30 per cent
9 million
4.6 million
1.What does the underlined word "vast" most probably mean
A. Very old B. Very large
C. Very dry D. Very hot
2.Which of the following is TRUE about the Sahara Desert
A. It is the oldest place in the world. B. It is over 5 million years old.
C. It covers 30% of the African continent. D. It is called "the great desert" in English.
Presentation
Read and fill
Read Part. 2 carefully and complete the table.
Category(类别) Content(内容)
Desert Climate - All deserts are .
- Sahara: dry + .
- It is _____________________ desert in the world.
Sahara Landforms - Most: .
- Also: grass, lakes, mountains, .
- Sand seas: look like a sea of sand;
sand looks like when wind blows.
dry
hot
the largest hot desert
rocky ground
sand seas
waves
Sahara is a hot and dry place. How can people and animals survive there How is the life there
Presentation
Watch and say
Presentation
Read and complete
Read Part. 3 carefully and complete the table.
Category Special ways to survive
People Move ____________________.
Live ___________ all year round.
Camels Can go for a long time ____________________.
Can drink __________________ of water in 13 minutes when they do find water.
Fennec foxes Have large ears to help their bodies ___________.
from place to place
near water
without drinking water
more than 100 litres
stay cool
Life in the Sahara is difficult, but people and animals adapt to survive.
Presentation
Watch and learn
Presentation
Look and say
But look at the desert itself—does it stay the same all the time
Presentation
Watch and say
Read Part. 4 (para.6) and answer the questions.
1. How much larger is the Sahara than about a century ago
2. Why is it growing
3. What will happen if we don’t take action
It is now about 10 per cent larger than it was about a century ago.
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.
The desert will keep growing.
What other reasons might cause the Sahara to grow

Presentation
Discuss and say
What other reasons might cause the Sahara to grow
1. 砍伐树木 (Deforestation)
- People cut down too many trees for firewood or farming.
- Trees help keep the soil and water. Without trees, the land becomes dry and turns into desert.
2. 过度放牧 (Overgrazing)
- Too many sheep and goats eat up all the grass.
- The soil is left bare. Wind can easily blow it away, and the land becomes desert.
3. 过度开垦 (Over-cultivation)
- Farmers plant crops on dry land too often, without letting the soil rest.
- The soil loses its nutrients and can’t grow plants anymore.
4. 水资源过度开发 (Overuse of water resources)
- People use too much groundwater for farming and daily life.
- Rivers and lakes dry up, and the land around them becomes desert.
5. 土壤侵蚀 (Soil erosion)
- Without plants to protect the soil, wind and rain wash the good soil away.
- The land becomes too poor to grow anything, so it turns into sand.
Presentation
Discuss and say
What can we do to help stop the desert from growing
1. Plant more trees (植树造林)
- We can plant more trees and grass.
- They can hold the soil and keep water in the ground.
2. Use water wisely (合理用水)
- We should save water in daily life (e.g., turn off taps when not using them).
- Farmers can use less water for growing crops.
3. Control grazing (控制放牧)
- Farmers should not keep too many sheep or goats in one place.
- This way, the grass can grow back.
4. Protect the soil (保护土壤)
- We should let dry land rest sometimes, not plant crops all the time.
- This helps the soil get back its nutrients.
5. Learn and tell others (宣传环保)
- We can learn more about desertification.
- We can tell our family and friends to protect the environment too.
Presentation
Look and say
Desert growth
8.2 million square kilometers
about 1920
Today

Sahara Desert area:
8.2 + 8.2 × 10% = 9.02
9.02 million square kilometers
Reasons: ___________________________________________
Future warning: ___________________________________________
根据美国《气候》杂志的研究数据
一个世纪前（约1920年）：面积约为 820万平方公里
Climate change / hotter summers, less rain
If we don’t take effective measures, the desert will keep growing.
Presentation
Watch and learn
Presentation
Listen and repeat
Presentation
Look and summary
What have you learned about the Sahara
Summary
What I already Konw
K
What I Want to Know
W
What I Have Learned
L
KWL chart
dry and hot
in Africa
the largest hot desert in the world
Camels live there
How old is it exactly
What plants and animals live there
How do people live there
......
Location
Size & Age
Geography
Life
Growth
Protection
...
Presentation
Read and complete
1
Read the text and complete the mind map.
in Africa
about 9 million square
kilometres
about
10%
larger
than
what it
was
about a century
ago
at least
4.6
million
years
old
about 2 million
people; animals
like camels and
fennec foxes
rocky ground,
grass, lakes,
mountains, and
sand seas
Presentation
Discuss and say
2
1. How is life in the desert different from other places
Life is difficult because of heat, lack of water, and frequent movement for survival.
I would like to visit the Sahara Desert for adventures, I would like to see the sand seas and some of the wildlife, like fennec foxes, but I would not like to live there. because the environment is severe (恶劣的).
2. Would you like to visit/live in the Sahara Why
Discuss the questions.
3. What will happen if the Sahara keeps growing What can we do to stop it
There may be more droughts. We must fight climate change by reducing pollution.
Our country has taken some measures to fight against the desert.
Can you name some of them
Do you think they can be used to stop the expansion of the Sahara
Presentation
Discuss and say
Fight against desert
Measures
Make laws
Build windbreaks
Plant more trees
and grass
Save water
...
Presentation
Watch and say
Protecting the desert is protecting our home; small actions today can stop the sand from swallowing tomorrow’s hope.
守护沙漠，就是守护我们共同的家园，今日的微小行动，能阻止黄沙吞噬明日的希望。
Presentation
Look and say
Let’s cherish our earth and fight climate change to keep our world green and beautiful.
Presentation
Language points
Para.1
Located in Africa, the Sahara Desert spreads across 30 percent 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.
be located in … 位于……
横跨……；遍布……
非洲大陆
广袤的沙漠
在阿拉伯语中
至少
one of the + 形容词最高级 + 复数名词 最…… 之一
Presentation
Language points
Para.2&3
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.
既干燥又炎热
最大的热带沙漠
n.南极洲
n.南极洲
岩石地面
一片沙的海洋
看起来像波浪
Presentation
Language points
Para.4
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.
大约两百万人
从一个地方搬到另一个地方
一些地区
全年；一年到头
Presentation
Language points
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.
with 短语作后置定语
适应环境以求生存
超过 100 升水
耳廓狐（沙漠狐）
Para.5
Presentation
Language points
Today, the world's largest hot desert is getting even bigger. It is now about 10 percent 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!
Para.6
变得甚至更大 / 持续扩大
变得甚至更大 / 持续扩大
但它为什么在扩张呢？
气候变化
气温升高
降雨量也更少
采取有效措施
Presentation
Class test
根据文章内容，从方框中选单词并用其适当形式完成短文
The Sahara Desert is a famous natural wonder. It ________ across 30 per cent of Africa. It is about 9 million square kilometres in size, making it the ________ hot desert in the world. It is also very _________—at least 4.6 million years old.
Most of the Sahara is rocky ground, with grass, lakes, mountains and sand seas. Life in the desert is not easy. Only about two million people ________ there, and they often move from place to place.
Animals must ________ to the dry and hot ________ to _________. Camels and fennec foxes are good examples of desert animals.
Now the Sahara is _________ bigger. It is about 10 per cent larger than it was a ________ ago. If we don’t take effective _________, the desert will keep growing.
spread large old live adapt survive grow century measure climate
spreads
largest
old
live
adapt
climate
survive
growing
century
measures
Presentation
Must do:
1. Copy and remember 5 key words from the passage (e.g., desert, dry, adapt, survive, measure).
2. Write 2 short sentences to describe the Sahara Desert (using the new words).
Choose to do:
1. Draw a picture of a fennec fox and label one of its adaptations (e.g., large ears).
2. Find one fact about desert protection and write it down in 1 simple sentence.
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