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Unit 4 The Wonders of Nature
八年级英语人教版·下册
Section A (3a-4d)
一、新课引入
The Yellow River.
Can you name these places
The Yangtze River.
The Nile.
一、新课引入
the Yellow River
Do you know how long they are
the Yangtze River
the Nile
一、新课引入
Let’s find out the answer in the dialogue together.
二、新课讲解
Read the conversation and underline the three rivers mentioned.
3a
Yaming: Welcome back, Ella! How was your trip
Ella: It was great! We saw the Hukou Waterfall on the Yellow River. Is that the longest river in China
Yaming: No, the Yangtze River is the longest river in China. It travels the farthest and is about 6,300 kilometres long. The Yellow River is 5,464 kilometres long and is the second longest. By the way, do you know why it’s called the Yellow River
顺便说一下
二、新课讲解
3a
Ella: Because it’s yellow
Yaming: Right. Some parts of the river carry brown and yellow earth.
Ella: That’s interesting! I like learning about rivers. My favourite is the Nile. Did you know it’s the longest river in the world
Yaming: Yes, it’s 6,671 kilometres long. It’s very important in Egypt’s history.
n. 土壤
Read the conversation and underline the three rivers mentioned.
二、新课讲解
3a
Ella: That’s right. Both the Nile and the Yellow River helped ancient civilizations to develop. And they’re still very important today.
Yaming: Yes. In China, we even call the Yellow River our “mother river”!
Ella: We should protect them at all costs.
Read the conversation and underline the three rivers mentioned.
不惜一切代价；无论如何
母亲河
二、新课讲解
Language points
1. It travels the farthest and is about 6.300 kilometres long. 它延伸最远，长度约6300公里。
【辨析】farthest与furthest
共同点 farthest/furthest 二者都可用于表示实际距离上的“最远”，在描述具体的、可测量的距离时，这两个词通常可以互换使用
不同点 farthest 侧重于表示具体的、实际的距离
farthest/furthest 二者都可用于表示实际距离上的“最远”，在描述具体的、可测量的距离时，这两个词通常可以互换使用
二、新课讲解
Language points
The village is the farthest/furthest one from here. 那个村庄是离这儿最远的一个。
I can throw the ball the farthest in our group. 在我们组里，我能把球扔得最远。
He has gone the furthest in solving this difficult problem. 在解决这个难题方面，他取得了最大的进展。
二、新课讲解
Language points
2. 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为黄河吗？
by the way意为“顺便说；问一下”。在句子中的位置比较灵活，可以放在句首、句中或句末，一般 用逗号与其他句子成分隔开。
二、新课讲解
Language points
(1) 用于引入新话题。
I’m going to the supermarket to buy some fruit. By the way, do you need anything 我要去超市买些水果。顺便问一下，你需要什么东西吗
(2) 用于补充信息。
I’ve finished my homework. By the way, I also helped my mom do some housework. 我已经完成了我的家庭作业。顺便说一下，我还帮我妈妈 做了些家务。
二、新课讲解
Language points
(3) 用于提醒对方。
We’re going to the park this weekend. By the way, wear comfortable shoes. 我们这个周末要去公园。顺便提醒一下，穿双舒适的鞋子。
二、新课讲解
What do Yaming and Ella know about these rivers Read the conversation again and complete the table.
3b
River Country Length Importance
Yellow River ___________ ___________ km helped in the development of
ancient _____________
Nile River ___________ ___________ km China
5,464
Africa
6,671
civilizations
二、新课讲解
Language points
3. helped in the development of ancient civilizations 助力了古代文明的发展
development作名词，意为“发展；发育；成长”。
Children need a good environment for their physical and mental development. 孩子们需要一个良好的环境来实现他们的身心发展。
二、新课讲解
Language points
【拓展】其动词为develop，意为“发展；成长；研制”。
China has developed rapidly in recent decades. 近几十年来，中国发展迅速。
Children should be encouraged to develop good study habits. 应该鼓励孩子们养成良好的学习习惯。
二、新课讲解
Listen to the conversation. Then role-play it.
3c
二、新课讲解
Imagine that you are Yaming or Ella. Continue the conversation with a partner about other geographical features in China.
3d
Ella: Could you tell me more about China, Yaming
Yaming: Sure! What would you like to know
Ella: What’s the biggest desert in China
Yaming: It’s the Taklimakan Desert.
Ella: Do you know ...
二、新课讲解
Imagine that you are Yaming or Ella. Continue the conversation with a partner about other geographical features in China.
3d
Ella: Could you tell me more about China, Yaming
Yaming: Sure! What would you like to know
Ella: What’s the biggest desert in China
Yaming: It’s the Taklimakan Desert.
Ella: Do you know how big the Qinghai Lake is
Yaming: It’s the largest lake in China. It’s in Qinghai Province.
Ella: Cool! What about the highest mountain
Yaming: Mount Qomolangma! It’s on the border of China and Nepal. It’s
8,848.86 meters tall.
Ella: That’s amazing! It’s the highest mountain in the world, right
Yaming: Yes, it is!
二、新课讲解
Read the sentences. Circle the adjectives which compare things. Underline the adverbs which compare actions.
4a
What is the biggest desert in the world It is the Sahara Desert.
How big is it It is about 9,000,000 square kilometres in size.
Where is the deepest point in the ocean It is in the Mariana Trench.
How deep is it It is about 11,000 metres deep.
Some deep-sea animals are blind, but they can “see” as well as others. Mount Qomolangma is one of the greatest wonders of the world, and it is still growing taller. The Yangtze River travels the farthest in China and is about 6,300 kilometres long.
二、新课讲解
Write or spell out the numbers.
4b
1. Mount Kilimanjaro is __________ (five thousand, eight hundred and ninety-five) metres high.
2. __________ (twenty-five thousand, seven hundred and sixty-eight) cubic metres of water pours down Inga Falls each second.
3. The East African Rift Valley is about 4,000 (_____________) miles long.
4. The Taklimakan Desert has a total area of about 337,000 (______________
_______________________) square kilometres.
5,895
25,768
four thousand
three hundred
and thirty-seven thousand
二、新课讲解
Complete the passage with the correct forms of the words in the box.
4c
My friends and I visited Victoria Falls in Africa last year. Visiting one of the world’s __________ waterfalls was a magical experience. As we went __________ to the falls, the noise of the water slowly grew __________ and louder. Then, right before our eyes, the waterfall appeared. It went on for as __________ as the eye could see. Later, we sat in a special pool at the top of the falls. There, we felt the water rush past us and become a part of the waterfall. It was the scariest but also the ____________ experience of our trip!
large amazing far close loud
largest
closer
louder
far
most amazing
……的一部分
adv. 正好；恰好
一眼望不到边
二、新课讲解
My friends and I visited Victoria Falls in Africa last year. Visiting one of the world’s largest waterfalls was a magical experience. As we went closer to the falls, the noise of the water slowly grew louder and louder. Then, right before our eyes, the waterfall appeared. It went on for as far as the eye could see. Later, we sat in a special pool at the top of the falls. There, we felt the water rush past us and become a part of the waterfall. It was the scariest but also the most amazing experience of our trip!
开头：点明游览地点和时间，总述这是一次奇妙的经历
中间：按游览顺序描写
结尾：总结经历
二、新课讲解
Language points
4. As we went close to the falls, the noise of the water slowly grew louder and louder. 当我们靠近瀑布时，水流的响声渐渐越来越大。
close to的用法：
(1) 意为“靠近；接近(空间上的接近)”。
Our school is close to a park. 我们学校靠近一个公园。
二、新课讲解
Language points
(2) 意为“接近(时间、数量、程度等)”。
It’s close to midnight. You should go to bed. 快到午夜了。你应该去睡觉了。
(3) 意为“几乎；差不多”。
She was close to tears when she heard the bad news. 当她听到这个坏消息时，几乎要哭出来了。
(4) 意为“亲密；亲近”。
My sister and I are very close to each other. 我和我姐姐关系非常亲密。
二、新课讲解
Write some questions to compare places. Then ask a partner your questions.
4d
● What is the highest ... ● Which park is bigger, ... or ...
What is the highest mountain in Asia
What is the longest river in China
What is the deepest ocean in the world
Which river is longer, the Yellow River or the Nile
Which mountain is higher, Mount Tai or Mount Huang
Which desert is hotter, the Sahara or the Taklimakan
三、归纳小结
1. New words and phrases:
waterfall, civilization, at all costs, development, cubic, cubic metre, mile, pool
2. Target language:
the sentences with Comparative and Superlative Forms of Adjectives and Adverbs
四、强化训练
一、单词拼写
1. Now more and more foreigners come to China for _________ (far) study.
2. The ___________ (develop) of our city brings us a better life.
3. From Earth, the Sun looks much ___________ (bright) than the other stars in the sky.
further
development
brighter
四、强化训练
4. Which is ___________ (deep) salt lake in the world
5. I think the cheetah runs the ___________ (fast) of all land animals.
6. Taizhou is an old city with a long history of more than two ___________ (thousand) years.
deepest
fastest
thousand
四、强化训练
二、完成句子
1. 她决心不惜一切代价完成这项任务。
She decided to finish the task ________ ________ ________.
2. 这座城市非常靠近大海。
This city is very ________ ________ the sea.
3. 我同意你的计划。顺便问一下，我们什么时候出发去大连？
I agree with your plan. ________ ________ ________, when are we leaving for Dalian
at all costs
close to
By the way
四、强化训练
三、书面表达
我们每个中国人都以自己的祖国为傲。请以“My motherland—china”为题，用英语介绍一下我们的祖国。提示：
1. 历史；
2. 位置：亚洲东部；
3. 河流和高山；
4. 名胜古迹 (places of interest)；
5. 人民正努力使自己的国家更加富强。
要求：
1. 要点齐全，语言流畅，书写规范；
2. 词数80左右，开头已给出，不计入总词数；
3. 文中不得使用真实姓名、校名。
四、强化训练
My motherland—China
China is my motherland. ________________________________________
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
It’s an old country with a very long history of
more than 5,000 years. China lies in East Asia. There are many places of interest in my country, such as the Great Wall, the Palace Museum and so on. They are well-known around the world.
China has many famous rivers and mountains. The Yangtze River is the longest river in my country. Mount Huang is famous in the world. Chinese people are trying to make the country richer and stronger.
五、布置作业
Memorize the new words and phrases.
Read the conversation in 3a.

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