资源简介

(共26张PPT)
Section A (1a~2d)
Unit 4
The Wonders of Nature
To learn new words and phrases: wonder, desert, measurement, square kilometre, below, sea level, surface, depth, dive, unusual, bottom...;
To use special questions (What's the ... / How ... is it ) to ask and answer about facts of places.
To recognize and use large numbers and units (e.g., metres, square kilometres) in context;
学习目标
1
2
3
Do you know the name of the waterfall in the photo
What do you think is special about it
It’s Victoria Falls.
It’s super big and wide.
Watch and answer.
Lead-in
Look at the pictures and discuss the question.
Can you say the names of the places
Pre-listening
Match the places with the pictures.
____ Nile River ____ Angel Falls ____ Mount Qomolangma
____ Dead Sea ____ Sahara Desert ____ Mariana Trench
F
A
D
C
E
B
1a
Listen to the game plete the descriptions of the places.
Place Description
Mount Qomolangma the ________________in the world
Sahara Desert the in the world
Dead Sea the on earth
Mariana Trench the ________________in the ocean
highest mountain
biggest desert
lowest place
deepest point
While-listening
1b
Try to read the following numbers.
416 8,848.86 11,000 9,000,000
416 → four hundred and sixteen
8,848.86 → eight thousand eight hundred and forty-eight point eight six
11,000 → eleven thousand
9,000,000 → nine million
1c
百
百万
千
十亿
two billion, sixty-five million, six hundred and nine thousand, nine hundred and eighty point three four.
点
billion
million
thousand
hundred
point
2, 065, 609, 9 80. 34
billion
million
thousand
point
three four
and
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”
416 8,848.86 11,000 9,000,000
1c
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.
Listen again and role-play the conversations.
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!
Talk about the places you have learnt about.
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 ...
Post-listening
1d
A: What’s the lowest place on earth
B: It’s the Dead Sea.
A: How low is it
B: Its surface is 416 metres below sea level.
A: Now, what’s the highest mountain in the world
B: It’s Mount Qomolangma.
A: How high is it
B: It’s 8,848.86 metres high.
e.g.
What do you know about the deep sea
Free talk
What do you know about the deep sea Complete the sentences with the information from the picture.
1. Fendouzhe reached _______.
2. The deep sea begins at _______.
3. The Titanic rests at _______.
4. A whale can dive to _______.
D
A
C
B
Pre-listening
2a
Read the sentences and say the meanings.
·where the deep sea begins
·why people are researching the deep sea
·which Chinese vessel dived deeper in the water than many others
·what deep-sea animals are like
·how everyone should protect the deep sea
A class is asking a deep-sea researcher some questions after his talk. Listen and tick the topics they discuss.
√
√
√
where the deep sea begins
why people are researching the deep sea
which Chinese vessel dived deeper in the water than many others
what deep-sea animals are like
how everyone should protect the deep sea
√
While-listening
2b
Listen again and check your answers.
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!
Listen again. Complete the sentences with the facts from the conversation.
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
2c
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.
● What is the largest shark in the deep sea
● What is the bottom of the deep sea like
● Why is it important to research the deep sea
……的底部
Post-listening
2d
Ask and answer.
What is the largest shark in the deep sea
It’s the whale shark.
鲸鲨是隶属于鲸鲨科鲸鲨属的唯一物种。别名豆腐鲨、大憨鲨、鲸鲛，它体表呈灰褐色或青褐色，具有许多黄色斑点和横纹。头平扁而宽，尾细小，每侧具2行纵行皮嵴。鲸鲨口裂宽大，圆形的眼睛较小，无瞬膜。具5个宽大的鳃孔和2个无硬棘的背鳍。胸鳍宽大，尾鳍分叉。其通常体长为10米左右，最大可达20米，体重大于5000千克，是世界上最大的鱼类。
What is the bottom of the deep sea like
There is extreme pressure, perpetual darkness, near-freezing temperatures and sparse life.
海底指海洋的深水下方与陆地的接触面，覆盖地球表面积的71%，其水体总量约13.5亿立方千米，占地球总水量的97%。包含太平洋、大西洋、印度洋和北冰洋四大洋系及多个附属海域。海底地形分为大陆边缘、大洋中脊与大洋盆地三部分，其中大陆架面积达2750万平方公里，提供全球80%的海洋水产品及大量油气资源。
Why is it important to research the deep sea
Because the deep sea is critically important to humanity for scientific, ecological, economic, and even philosophical reasons.
深海蕴藏三类主要资源
矿产资源：多金属结核（储量超陆地1000倍）、热液硫化物矿床（含铜锌品位达陆矿10倍）
油气资源：南海预测石油储量超过沙特阿拉伯已探明储量
生物基因：耐压菌株（存活于120MPa压力环境）应用于工业酶制剂生产
一、写出下列数字的英文表达。
433,024
856,730,452
59,725
four hundred and thirty-three thousand and twenty-four
eight hundred and fifty-six million, seven hundred and thirty, four hundred and fifty-two
fifty-nine thousand, seven hundred and twenty-five
当堂检测
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.
二、单词拼写
unusual
research
wonders
depth
Homework
Find out more facts of wonders of nature on the Internet.
Write down the conversation in 1d and share it with your classmates in the next class.

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