资源简介

(共34张PPT)
Unit 4 The Wonders of Nature
八年级英语人教版·下册
Section A (1a-2d)
一、新课引入
Do you know the name of the waterfall in the photo
Victoria Falls.
一、新课引入
What do you think is special about it
Huge scale: It is one of the world’s three largest waterfalls, with a main width of about 1,700 meters and a drop of over 100 meters.
Diverse landscapes: It includes multiple sections (such as the Main Falls and Rainbow Falls).
World Heritage status: It was listed as a World Natural Heritage Site in 1989, combining ecological value and visual shock.
一、新课引入
Do you know other wonders of nature
二、新课讲解
Language points
1. The Wonders of Nature 自然奇观
wonder 作名词，意为“奇迹；奇观；惊奇”。
The Great Wall is one of the wonders of the world. 长城是世界奇观之一。
wonder 的相关短语：
(1) in wonder惊奇地
The children looked at the fireworks in wonder. 孩子们惊奇地看着烟花。
二、新课讲解
Language points
(2) no wonder 难怪；不足为奇
No wonder you’re tired, you’ve been working all day. 难怪你累了，你一整天都在工作。
【拓展】wonder 还可作动词，意为“想知道”。
I wonder who he is. 我想知道他是谁。
二、新课讲解
Match the places with the pictures.
1a
_____ Nile River _____ Angel Falls _____ Mount Qomolangma
_____ Dead Sea _____ Sahara Desert _____ Mariana Trench
F
A
D
C
E
B
世界最长河流
世界最高瀑布
世界最高峰
世界海拔最低湖泊
世界最大沙漠
世界最深海沟
二、新课讲解
Listen to the game plete the descriptions of the places.
1b
Place Description Measurement
Mount Qomolangma the ___________________ in the world _________ metres high
Sahara Desert the ___________________ in the world about _________ square kilometres
in size
Dead Sea the ___________________ on earth _________ metres below sea level
Mariana Trench the ___________________ in the ocean about _________ metres deep
highest mountain
biggest desert
lowest place
deepest point
二、新课讲解
Listen again. Complete the measurements in 1b with the numbers below.
Place Description Measurement
Mount Qomolangma the highest mountain in the world ___________ metres high
Sahara Desert the biggest desert in the world about ___________ square kilometres
in size
Dead Sea the lowest place on earth ___________ metres below sea level
Mariana Trench the deepest point in the ocean about ___________ metres deep
8,848.86
9,000,000
416
11,000
基数词+单位词+形容词
“描述事物的度量特征”
基数词+单位词+in+名词
“在某范围 / 类别内的具体度量”
1c
416 8,848.86 11,000 9,000,000
二、新课讲解
Language points
2. ... below sea level ……海平面以下
below 作介词，意为“在……下面；低于；少于”。
There is a beautiful garden below our window. 在我们窗户下面有一个漂亮的花园。
The sun sank below the horizon. 太阳落到了地平线以下。
His score on the test was below 60. 他这次考试的分数低于60分。
二、新课讲解
Language points
【拓展】below 还可作副词，意为“在(或到)下面” 。
Look at the picture below. 看下面的图片。
【辨析】below与under
below 不一定表示垂直的下方，主要强调位置低于某物。反义词为above
under 通常表示在某物的正下方，有垂直在下的意思，还可表示“覆盖；隐藏”等含义。反义词为over
二、新课讲解
Language points
There are some flowers below the balcony. 阳台下面有一些花。
The ball is under the table. 球在桌子的下方。
The little girl hid under the blanket. 小女孩藏在了毯子下面。
二、新课讲解
Language points
3. about 11.000 metres deep 深约11000米
关于长、宽、高、深的表达：
(1) 基数词+单位词+形容词 (long, wide, tall, high, deep等)
10 metres long 10米长
15 meters wide 15米宽
200 metres deep 200米深
二、新课讲解
Language points
(2) 基数词+单位词+in+名词 (length width, height, depth 等)
10 metres in length 10米长
15 meters in width 15米宽
200 metres in depth 200米深
二、新课讲解
Language points
(3) 对长、宽、高等提问用疑问词how。
How long/high/wide ... ……多长/高/宽？
How wide is this river 这条河有多宽？
How long is the Great Wall of China 中国的长城有多长？
Listen to the script and check your answers.
二、新课讲解
Host: Welcome to our game show! Today, it’s all about geography. Answer as quickly as you can! Question one: What is the highest mountain in the world
Fu Xing: It’s Mount Qomolangma!
Host: Correct! How high is it
Liu Hongyu: I know this—it’s 8,848.43 metres high.
Host: No, sorry. Fu Xing
Fu Xing: Is it 8,848.86 metres
Host: Yes! But some scientists say Qomolangma is still growing taller! Now, name the biggest desert in the world.
Fu Xing: The Taklimakan Desert
Host: Wrong! Ella
Ella: It’s the Sahara Desert.
Host: Right! Now, how big is it
Ella: It’s about 9,000,000 square kilometres.
Host: That’s right! What’s the lowest place on earth
Liu Hongyu: It’s the Dead Sea!
Host: Well done! Its surface is 416 metres below sea level. Now where’s the deepest point in the ocean
Fu Xing: It’s in the Mariana Trench.
Host: That’s correct! How deep is it
Fu Xing: It’s about 11,000 metres deep.
Host: Correct!
二、新课讲解
Talk about the places you have learnt about.
1d
A: What’s the lowest place on earth
B: It’s ...
A: How low is it
B: Its surface is ... metres below sea level.
A: Now, what’s ...
二、新课讲解
What do you know about the deep sea Complete the sentences with the information from the picture.
2a
1. Fendouzhe reached _______.
2. The deep sea begins at _______.
3. The Titanic rests at _______.
4. A whale can dive to _______.
D
A
C
B
二、新课讲解
A class is asking a deep-sea researcher some questions after his talk. Listen and tick the topics they discuss.
2b
where the deep sea begins
why people are researching the deep sea
which Chinese submersible dived deeper in the water than many others
what deep-sea animals are like
how everyone should protect the deep sea
√
√
√
√
二、新课讲解
Language points
4. why people are researching the deep sea 人们研究深海的原因
research 的用法：
(1) 作名词
①不可数名词，意为“研究；调查；探索”。
We should do some research on the history of the local area. 我们应该对当地的历史做些研究。
二、新课讲解
Language points
②可数名词，意为“研究项目；研究工作”。
A new research shows that exercise can improve our memory. 一项新的研究表明运动可以提高我们的记忆力。
二、新课讲解
Language points
(2) 作动词，意为“研究；调查”。
He is researching the effects of pollution on plants. 他正在研究污染对植物的影响。
They are researching into/on the new energy sources. 他们正在对新能源进行研究。
Listen to the script and check your answers.
二、新课讲解
Ms Gao: Thank you for the wonderful talk, Mr Jones. Now, does anyone have any questions
Emma: I do! Why are so many countries researching the deep sea
Mr Jones: Well, curiosity is one reason. We don’t know enough about the ocean floor.
Fu Xing: I remember that in 2020, China’s Fendouzhe dived deeper into the Mariana Trench than many other submersibles in the world and filmed it. But I didn’t see any deep-sea animals. What are they like
Mr Jones: Well, many deep-sea animals are large and unusual. Some animals are blind, but they can “see” as well as others. Some even create their own light!
Peter: Cool! Are there any other surprising facts about the deep sea
Mr Jones: Did you know that there’s rubbish even at 11,000 metres deep That shocked many people.
Ms Gao: That’s terrible! We should do something about it.
Mr Jones: You’re right!
二、新课讲解
Listen again. Complete the sentences with the facts from the conversation.
2c
1. People still don’t know much about the ___________.
2. In _________ , China’s Fendouzhe dived into the deep sea and filmed it.
3. Some animals have unusual abilities. Some are _________ but can “see”. Some can even create their own _________.
4. There is rubbish even at _________ metres deep.
ocean floor
2020
blind
light
11,000
二、新课讲解
Language points
5. Some animals have unusual abilities. 有些动物拥有特殊能力。
unusual由 un-(表示否定)和 usual 构成，意为 “不寻常的；特别的”
She has an unusual talent for painting. 她在绘画方面有独特的天赋。
It’s unusual for him to be late. 对他来说迟到是很不寻常的。
二、新课讲解
Read the questions and think of more you would like to ask the deep-sea researcher. Research the answers. Then ask and answer the questions with a partner.
2d
● What is the largest shark in the deep sea
● What is the bottom of the deep sea like
The Greenland shark is the largest shark in the deep sea. It can grow very big and live for a long time.
The bottom of the deep sea is dark, cold and quiet. There is soft sand, hard rocks, seamounts and hydrothermal vents (hot water holes) on it.
……的底部
二、新课讲解
Read the questions and think of more you would like to ask the deep-sea researcher. Research the answers. Then ask and answer the questions with a partner.
2d
● Why is it important to research the deep sea
It’s important because we can find new sea animals, learn about the origin of the Earth, discover useful natural resources (like oil and gas) and protect the whole ocean environment.
二、新课讲解
Language points
6. What is the bottom of the deep sea like 深海底部是什么样子的？bottom作名词，意为“底部；最下面”。常和介词“at” “on” “in”等搭配。
There are some rocks at the bottom of the sea. 在海底有一些岩石。
Look at the words on the bottom of the page. 看这页底部的单词。
Our house is at the bottom of the hill. 我们的房子在山脚下。
二、新课讲解
Language points
【拓展】bottom还可作形容词，意为“底部的；最后的”。
Please put it in the bottom drawer. 请把它放在最下面的抽屉里。
二、新课讲解
More questions you would like to ask the deep-sea researcher.
How do deep-sea animals live without sunlight
Is it cold in the deep sea
Are there plants in the deep sea
How do researchers study deep-sea animals safely
...
三、归纳小结
1. New words and phrases:
wonder, desert, measurement, square kilometre, below, level, sea level, surface, depth, dive, submersible, unusual, bottom
2. Target language:
—What’s the lowest place on earth
—It’s ...
1. Today is an __________ (usual) day for Jack. It’s his twentieth birthday.
2. We need to do some __________ (research) to find out the answer.
3. The Great Wall is one of the __________ (wonder) of the world.
4. Holding his breath for about three minutes, Jerald swam down to a __________ (deep) of 112 metres.
四、强化训练
一、单词拼写
unusual
research
wonders
depth
1. 这个公园真的是个自然奇观。
The park is really a ________ ________.
2. 这条河大约5米深。
This river is about ________ ________ ________.
3. 科学家在湖的底部发现了一些奇怪的生物。
The scientists found some strange living things ________ ________ ________ ________ the lake.
四、强化训练
二、完成句子
natural wonder
5 metres deep
at the
bottom of
五、布置作业
1. Listen to the dialogues in 1b and 2b.
2. Talk with your deskmate about natural wonders.

展开更多......

收起↑