资源简介

(共23张PPT)
Section A (2a~2d)
The Wonders of Nature
Unit 4
Learning aims
能谈论对深海的了解
通过听说活动，了解深海的信息
Lead in
Have you ever been curious about the deep sea
What’s the deep sea like
What’s in the deep sea
Can we go down into the deep sea
What do you know about the deep sea
2a
dark
cold
silent
high pressure
dangerous
Activity 1
Know some facts about the deep sea
1. Fendouzhe reached
______________.
2. The deep sea begins at
______________.
3. The Titanic rests at
______________.
4. A whale can dive to
______________.
D
A
C
B
/ta t n k/
Complete the sentences with the information from the picture.
2a
Let’s know more about the deep sea
Activity 2
Talk about the facts you know about the deep sea
2b
A class is asking a deep-sea researcher some questions after his talk.
…
What questions will the class ask
2b
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
√
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!
dive into 潜入
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.
深海相关的名词(短语)
年份/地点
表感官缺陷的形容词
视觉相关的名词(短语)
具体的数据
特殊能力
2c
Read and predict. What can be filled in the blanks
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
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
Language points
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... ”。
〔名词〕深（度）；纵深
1 OCEAN DEPTHS
We found water at a depth of 20 metres.
我们在20 米深处找到了水。
形容词形式：deep 深的；有……深的
拓展
What’s the depth of the lake here
=How deep is the lake here
这儿的湖水有多深？
2. A whale can dive to _____.
（1）〔动词〕潜水；跳水；俯冲
I dived below the surface of the water. 我潜入了水中。
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
The diver made a dive to a depth of 18 metres.
那名潜水者潜到了18 米水深处。
3. Some animals have unusual abilities …
〔形容词〕特别的；不寻常的；罕见的
The coach has an unusual name.
这个教练有个特别的名字。
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 adj.
通常的；寻常的
（反义词）unusual adj.
特别的；不寻常的；罕见的
usually adv. 通常地；一般地
4 What is the bottom of the deep sea like
〔名词〕底部；最下部 对应词：top 顶部；顶端
(at) the bottom of（在）……的底部
from top to bottom 从上到下；彻底地
搭配
What is there at the bottom of the deep sea 深海底部有什么？
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。
Summary
Deep ocean
Research reason
China’s Fendouzhe
deep-sea animals
environment
(生态环境)
the appearance (样貌) of the ocean floor
Exercise
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
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
1. Memorize the new words and phrases.
2. Write the facts you know about the sea.

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