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(共31张PPT)
Unit 4
The Wonders of Nature
第6课时 (Section B 2a-3c)
R·八年级下册
Vocabulary in Use
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
E. unusual
F. living
G. high
H. die
A. safe
B. bottom
C. southern
D. above
Match the words on the left with their opposites on the right.
2a
Read the examples and make more sentences using how and the words in the box.
2a
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
Complete the passage with the correct forms of the words in the box.
2c
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
位于
淡水湖
西伯利亚
贝尔加湖
占（一片面积）
deepest
dive
surface
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 _________!
比利时
不同种类的……
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
survive
wonder
What’s the video about
Pre-writing
the Great Barrier Reef
大堡礁
Do you know the biggest coral reef in the world
wonders of the world If so, visit the Great Barrier Reef!
Read the advertisement. Circle the numbers and underline the adjectives used to describe the Great Barrier Reef.
3c
Do you love the ocean Do you want to visit one of the natural
The Great Barrier Reef:
An Amazing Underwater Water
水下世界
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。
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.
东北海岸
占用（时间）；占据（空间）
沙子；沙滩
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!
活体结构
海龟；龟
一生的
Think and discuss
What’re the functions(作用) of numbers and adjectives used in an advertisement
amazing
biggest
alive
largest
345,000
number
adjectives
persuasive(可信的) & impactful
（有冲击力的）
more vivid &
more attractive
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
文章结构
开头
Read and summarize
What does an advertisement for natural wonders consist of
主体
结尾
用问句吸引读者，点明推荐地点。
1.介绍位置、核心特点
（面积、规模、生物多样性）
2.推荐可做的事
（swim, dive, see...）
情感号召，强化吸引力。
Read a student’s notes on Qinghai Lake. Rewrite them in full sentences.
3b
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
1.Qinghai Lake is a_________ in________________________.
2.Qinghai Lake is___________________ in China.
3.It is______________________ in size.
4.If you visit Qinghai Lake, you can______________________
___________________________________________.
salt lake
Qinghai Province, China
the largest lake
4, 340 square kilometres
photograph wildlife
(fish and birds), visit islands, ride a bike or horse
Write an advertisement for Qinghai Lake or another natural wonder. Try to make your advertisement as persuasive as possible.
3c
opening
Place Name: A/An adj Wonder of …
Body
Title
Do you want to visit... If so, visit...!
Located in..., it is the largest... It covers an area of...
You can see... You can swim/photograph/ride...
Visiting... is the dream of a lifetime!
Ad
Ending
Looking for an amazing summer trip Come to Qinghai Lake in Qinghai Province—China’s largest salt lake, covering 4,340 square kilometres!
Sample
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!
话题概述
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。
介绍某一自然奇观
范畴:
主题群:
子主题内容:
人与自然
自然生态
不同地区的生态特征与自然景观
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
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
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
开篇点题
具体介绍
表达感受
The Yarlung Zangbo Grand Canyon is one of the greatest natural wonders...
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...
The best time to visit the Yarlung Zangbo Grand Canyon is...
For people who... is the dream of a lifetime!
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！
The Yarlung Zangbo Grand Canyon is one of the greatest natural wonders①, located in Xizang, China.
范文欣赏
①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。
The Yarlung Zangbo Grand Canyon is not only the world’s longest but also② the world’s deepest canyon.
②用“not only... but also...”介绍雅鲁藏布大峡谷的地理情况。
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 that③ it’s called the “plant museum” and the “animal kingdom”.
③用“so... That”描述雅鲁藏布大峡谷的生态地位。
The best time to visit the Yarlung Zangbo Grand
Canyon is in spring and summer. For people who④ love
the canyon, visiting the Yarlung Zangbo Grand Canyon④is the dream of a lifetime!
④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。
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.

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