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Unit 4 The Wonders of Nature
八年级英语人教版·下册
Section B (2a-4c)
一、新课引入
What words would you use to describe natural wonders
二、新课讲解
2a
Match the words on the left with their opposites on the right.
1. _________ below 5. _________ top
2. _________ common 6. _________ northern
3. _________ low 7. _________ risky
4. _________ dead 8. _________ survive
A. safe E. unusual
B. bottom F. living
C. southern G. high
D. above H. die
D
E
G
F
B
C
A
H
二、新课讲解
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
long high deep old fast soon
1. ______________________________ 4. ______________________________
2. ______________________________ 5. ______________________________
3. ______________________________ 6. ______________________________
How long is this river
How old is this old building
How high can you jump in PE class
How fast does this train run
How deep is the lake in the park
How soon will the movie start
二、新课讲解
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 _________!
deepest
dive
surface
survive
wonder
淡水湖
过去分词短语作地点状语
自然景观
二、新课讲解
3a
Read the advertisement. Circle the numbers and underline the adjectives used to describe the Great Barrier Reef.
The Great Barrier Reef:
An Amazing Underwater World
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.
占地面积为……
so 用来指代前一句提到的内容，避免句子重复，让表达更简洁
二、新课讲解
3a
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!
who引导定语从句
Read the advertisement. Circle the numbers and underline the adjectives used to describe the Great Barrier Reef.
动名词短语作主语，谓语动词用单数形式
二、新课讲解
Language points
1. It takes up an area of 345,000 square kilometres and includes many islands and white sand beaches. 它的面积达34.5万平方千米，包含 900多个岛屿和白色沙滩。
二、新课讲解
Language points
【辨析】include, included与including
include 意为“包括；包含”，强调把某事物作为整体的一部分包含在内。后面直接接宾语
included include的过去分词，用来补充说明前面提到的事物包含在某个范围内，放在名词或代词后
including 作介词，用来引出包含在整体中的部分内容，一般放在被包含的事物之前
二、新课讲解
Language points
The tour includes a visit to the Science Museum. 这次旅行包括参观科学博物馆。
We all went, me included. 我们都去了，包括我在内。
They have many pets, including three cats. 他们有很多宠物，包括三只猫。
二、新课讲解
Language points
2. The Great Barrier Reef is also alive! 大堡礁也是有生命的！
【辨析】alive, live, lively 与 living
alive 意为“活着的；有生气的”，作表语或后置定语
live 作动词时读/liv/，意为“居住，生活”；作形容词时读/larv/，意为“活的，现场直播的”
lively 意为“活泼的；生动的；充满活力的”，作定语或表语
living 意为“活着的；现存的”，作定语或表语
二、新课讲解
Language points
All the people alive are very lucky to escape from the fire. 所有还活着的人都很幸运地从火灾中逃了出来。
I live in Beijing. 我住在北京。
There is a live fish in the bowl. 碗里有一条活鱼。
She is a lively girl. 她是一个活泼的女孩。
All living things need water. 所有生物都需要水。
二、新课讲解
Language points
3. For people who love the ocean, visiting the Great Barrier Reef is the dream of a lifetime! 对于热爱海洋的人来说，游览大堡礁是一生的梦想!
people who love the ocean 是一个名词短语，中心词是people, who love the ocean为定语从句，用来修饰people 。其中 people 是先行词，who 是关系代词，引导定语从句。
My uncle who works as a doctor is very kind. 我那个当医生的叔叔非常和蔼。
二、新课讲解
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
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 like fish and birds,
visit islands, and ride a bike or horse
二、新课讲解
3c
Write an advertisement for Qinghai Lake or another natural wonder. Try to make your advertisement as persuasive as possible.
Come and See Qinghai Lake!
Do you want to leave the noisy city and enjoy the beauty of nature Come to Qinghai Lake!
Qinghai Lake is in Qinghai Province, China. It is our country’s largest lake. The water is blue and clear. Green grass grows around it. You can see many birds flying and fish swimming here.
There are lots of fun things to do. You can take photos of cute wildlife, visit the quiet islands, or ride a bike along the lake. The fresh air and nice views will make you feel happy and relaxed.
Don’t miss this great place! Qinghai Lake will give you an unforgettable trip!
二、新课讲解
4a
Work in a group. Choose a natural wonder (a river, lake, mountain, forest, waterfall, etc.). Then do some research and make notes.
● name ● location and size ● plants and animals ● special facts
二、新课讲解
4b
Make a poster about the natural wonder you chose. Refer to the example on the right.
二、新课讲解
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 ...
二、新课讲解
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, plus five other countries.
People call it “the lungs of the earth” because it makes more oxygen than lots of other forests. It also has the largest variety of plants and animals in the world —you can find millions of unique living things here.
二、新课讲解
Let me tell you about the Northern Lights!
They’re beautiful lights in the sky. You can see them in the North Pole area. Their colors are green, pink and purple. They only appear at night, and they look like dancing ribbons—so pretty!
二、新课讲解
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.
1. New words and phrases:
risky, southern, located, freshwater, type, attract, curious, traveller, natural, reef, underwater, northeastern, coast, coral, include, sand, alive, structure, turtle, lifetime
三、归纳小结
2. Reading:
The Great Barrier Reef: An Amazing Underwater World
四、强化训练
书面表达
假设你是王浩宇，你们班的交换生Tim想在暑假参观一处自然奇观。请你根据下列内容提示，用英语写一封80词左右的邮件，向他推荐世界上最深的峡谷——雅兰藏布大峡谷。开头和结尾已给出，不计入总词数。
语篇类型：应用文
时态：一般现在时；
人称：第三人称；
内容提示：
长度：约505千米；
深度：约6千米(最深处)；
美誉：植物博物馆the plant museum；动物王国the animal kingdom；
最佳旅游时间：春、夏
四、强化训练
Dear Tim,
I’m writing to tell you something about one of the greatest wonders of the natural world in China — the Yarlung Tsangpo Grand Canyon. _________________________
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours
Wang Haoyu
It’s in Xizang, China. It is
about 505 kilometers long. And it is the deepest canyon in the world. The deepest depth of it reaches around 6 kilometers.
As a place that all nature lovers want to visit, the Yarlung Tsangpo Grand Canyon is home to thousands of plants and animals. It’s called “the plant museum” and “the animal kingdom”. The best time to visit it is spring and summer.
I’m sure you will have a great time there.
五、布置作业
1. Design a poster about a natural wonder by yourself.
2. Preview the new words and expressions about Unit 5.

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