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(共28张PPT)
Unit 4 The Wonders of Nature
第 1 课 时 （1a—2d）
Section A
What is amazing about nature
单词：wonder，desert，measurement，below，level，surface，depth，dive，submersible，unusual，bottom
短语: square kilometre，sea level
句型：①What’s the lowest place on earth
②How low is it
③Its surface is 416 metres below sea level.
能识别常见的自然奇观的名称，熟悉形容词最高级和大数字的用法。
积累与深海探索相关的核心词汇和表达，并能用相关词汇简要介绍深海的特点。
1
2
Learning Goals
1. Do you know the name of the waterfall
2. What do you think is special about it
Yes. It’s Victoria Falls.
I think it is very wide and tall, and it’s one
of the largest waterfalls in the world.
Warming-up
3. What other natural wonders do you know
Yangtze River
Lake Baikal
Great Barrier Reef
How much do you know about nature
Lead-in
___ Nile River ___ Angel Falls ___ Mount Qomolangma
___ Dead Sea ___ Sahara Desert ___ Mariana Trench
F
A
D
C
E
B
/na l/
/ e nd l/
/ t m lɑ m /
/s hɑ r /
/ m ri n /
/trent /
Match the places with the pictures.
1a
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
Meriana Trench the _______________ in the ocean about ________ metres deep
highest mountain
8848.86
lowest place
9,000,000
biggest desert
416
deepest point
11,000
Listen to the game plete the
descriptions of the places.
1b
Listen again. Complete the measurements in 1b
with the numbers below.
Listening tips:
1. Learn about the listening tasks and look through the numbers
in the box.
2. Pay attention to the places and numbers while listening.
3. Match the places with the numbers.
416 8,848.86 11,000 9,000,000
1c
1000以上的基数词的表示法：从数字的右端向左端数，每三位数加一个逗点；从右端向左端开始，第一个逗点处读thousand(千)，第二个逗点处读million(百万)，第三个逗点读billion(十亿)；读的时候通常在hundred后加and,如果百位数为0，则在thousand后加and。
较大数字的表达方法
Listen again and check your answers.
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 ...
Talk about the places you have learnt about.
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.
Example:
1. Fendouzhe reached ______.
2. The deep sea begins at
______.
3. The Titanic rests at ______.
4. A whale can dive to ______.
D
A
C
B
What do you know about the deep sea Complete
the sentences with the information from the picture.
2a
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
A class is asking a deep-sea researcher some questions after his talk. Listen and tick the topics they discuss.
2b
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
Listen again. Complete the sentences with the facts
from the conversation.
2c
Listen again and check your answers.
Listening Scripts：
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
2d
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.
Pair Work
1. _____ metres high ______米高
物体长、宽、高、深等的表达法
基数词+单位词+形容词（long、wide、high、deep等）
基数词+单位词+in+名词（length、width、height、depth等）
Language points
2. _____ metres below sea level 海平面以下……米
（1）〔介词〕在……下面
例句：Please don’t stand below that bridge.
请不要站在那座桥下面。
（2）〔介词〕低于
例句：It was three degrees below zero this morning.
今天早晨的温度是零下三度。
blew
（3）〔副词〕在下面；低于 不强调垂直的“下面”。
例句：From the top of the mountain, I could see the village below.
从山顶上我可以看到下面的村庄。
辨析：below与under两者都表示“在……下面”。区别如下：
below 表示在某物的下方，但不一定是在正下方，反义词是above 例句：Write the answers below each question.
把答案写在每个问题的下面。
under 表示在某物的正下方，反义词是over 例句：The farmer is standing under the tree.
那个农民正站在树下。
level
（1）〔名词〕高度
例句：The mountain is over 3,000 metres above sea level.
这座山海拔3 000 多米。
（2）〔名词〕水平；程度
例句：He studies hard to improve his English level.
他努力学习以提高他的英语水平。
3. Its surface is… metres below sea level.
它的表面在海平面以下…米。
〔名词〕表面；表层
当指“水面”或“液面”时，常用单数形式。
例句：Nearly 10% of the earth’s surface is covered by ice.
地球表面将近10% 被冰覆盖。
拓展
on the surface 表面上；从外表看；乍一看
例句：On the surface, it seems to be my fault.
表面上看，这似乎是我的过错。
surface
询问某物的深度时，常用句型“What’s one’s depth ”或“What’s the depth of... ”，相当于“How deep is/are... ”。
depth
〔名词〕深（度）；纵深
4. OCEAN DEPTHS 海洋深度
例句：We found water at a depth of 20 metres. 我们在20 米深处找到了水。
拓展：形容词形式：deep 深的；有……深的
例句：What’s the depth of the lake here =How deep is the lake here
这儿的湖水有多深？
5. A whale can dive to _____. 鲸鱼能潜到……
dive
（1）〔动词〕潜水；跳水；俯冲
例句：I dived below the surface of the water. 我潜入了水中。
例句：He likes diving into the swimming pool on hot days.
在炎热的天气里，他喜欢跳进泳池。
（2）〔名词〕潜水；跳水；俯冲
例句：The diver made a dive to a depth of 18 metres.
那名潜水者潜到了18 米水深处。
6. Some animals have unusual abilities. 有些动物有不寻常的能力。
unusual
〔形容词〕特别的；不寻常的；罕见的
例句：The coach has an unusual name.
这个教练有个特别的名字。
例句：It’s unusual to see a rainbow in the desert.
在沙漠里看到彩虹是很罕见的。
拓展：unusual 的相关词：
usual 〔形容词〕通常的；寻常的
usually〔副词〕通常地；一般地
7. What is the bottom of the deep sea like
深海的底部是什么样子的？
bottom
〔名词〕底部；最下部 对应词：top 顶部；顶端
搭配：(at) the bottom of（在）……的底部
from top to bottom 从上到下；彻底地
例句：What is there at the bottom of the deep sea 深海底部有什么？
例句：They cleaned the house from top to bottom before the Spring Festival.
春节前，他们把房子彻底打扫了一遍。
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
Ⅰ.写出下列数字的英文表达
Practice
Ⅱ.补全对话
A: Eric, what is the largest desert in the world Is it the Arabian Desert
B: 1. ____________________________________. The Sahara Desert is the biggest and the Arabian Desert is the second biggest.
A: I see. 2. ____________________________________
B: It’s about 9,000,000 square kilometres in size.
A: OK. Next question: 3. ____________________________________
B: The Caspian Sea. It is bigger than any other salt lake in the world.
A: 4. ____________________________________
B: China is the biggest country in Asia.
A: Wow, you’re really good at geography. Can you tell me something about animals in China
B: No problem! 5. ____________________________________
A: Yes, I do. They are China’s national treasure.
B: That’s true! They live in China and mainly live on bamboo.
No, it isn’t
How big is the Sahara Desert
What is the biggest salt lake in the world
Which country is the biggest in Asia
Do you know pandas

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