资源简介

(共30张PPT)
UNIT 5　
Into the unknown
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Developing ideas
1. Students could learn some words and phrases.
2. Students could get the main idea of this passage.
3. Students could write sentences about this unit.
Learning Aims:
下潜很深
Diving Deep
What is your understanding of this title？
Share with others
Brainstorming: Before learning this grammar, what ideas come to your mind
1. fish
2. biue sea
3. ...
Look at the sentences and answer the questions.
1. What different zones are there in the ocean
Sunlight Zone, Twilight Zone, Midnight Zone and Abyssal Zone.
Look at the sentences and answer the questions.
2. Which parts of the ocean do you think have been
explored
Sunlight Zone, Twilight Zone.
Look at the sentences and answer the questions.
3. What do you know about the deepest part of the ocean
It is Abyssal Zone.
What has been discovered in the ocean depths
Shipwrecks of the Esmeralda, ruins of ancient cities and the substance known as “fire ice” have been discovered in the ocean depths.
Shipwrecks such as that of the Esmeralda.
What has been discovered in the ocean depths
1 Lying under waters across the globe are an estimated
three million shipwrecks. All of them represent
attempts over the centuries to explore Earth’s furthest
corners. Among these is the Esmeralda, the earliest
wreck from the age of the European exploration of
Asia. Today, some 500 years after the Esmeralda set
sail, there is little – if any – land on our planet left
unexplored. We have more detailed maps of the Moon,
and even of Venus and Mars, than we do of Earth’s
own sea bed.
Take notes quickly！
重点词汇
shipwrecks 船舶失事 ; 海难 ;
furthest 最远的 ; 最大限度地
Esmeralda 埃斯梅拉达
wreck 沉船 ;
if any 如果有的话；即便要
unexplored 无人涉足的 ;
sea bed 海底;海床
Ruins of ancient cities like Neapolis.
2 Given our limited knowledge, it is perhaps no surprise
that exploration of the oceans continues to lead to
discoveries in various scientific fields. As with the
discovery of the Esmeralda, many archaeological finds
are made in shallow waters near the coast. These may
sometimes include whole cities buried beneath the
waves. One such find is the ancient Roman city of
Neápolis, discovered off the coast of Tunisia. Believed
to have been buried underwater by a tsunami in the
fourth century AD, the ruins of Neápolis are almost
2,000 years old. The remaining streets and buildings
offer a window into a fascinating period in our history.
However, we are only beginning to overcome the
challenges of pressure, darkness and extreme cold at
vast depths. Fragments of the past lying deep beneath
the oceans are still waiting to be discovered.
What has been discovered in the ocean depths
Take notes quickly！
重点词汇
lead to 导致 ; 通向
discoveries 发现 ; 发觉 ; 被发现的事物
As with 如同，和-----一样，就----而言，
Esmeralda 埃斯梅拉达
archaeological 考古的；考古学的；
polis 城邦 ; 城市 ; 政治 ;
off the coast 在海面上
extreme cold 极冷 ; 极端寒冷
3 Amazing biological discoveries are also being made.The dark zones of the oceans may contain up to90 per cent of the planet’s fish. In these waters, more than 200 metres deep, where light cannot reach, are extraordinary creatures thatappear as if they are straight out of science fiction. Imagine bone-white coral 6,000 metres below the ocean’s surface, growing at the rate of only one or two millimetres per year. Some of these could be 4,000 years old. Swimming through these black depths is the barreleye, a strange fish with eyes that can look upwards through its transparent forehead. In the very deepest ocean trenches that are more than 8,000 metres below the surface, the pressure is equivalent to 50 aeroplanes stacked one on top of another. Yet there is still life to be found, even around the deep-sea volcanic openings. These discoveries all help us understand the capacity for life on our planet, even in the most extreme circumstances.
Extraordinary deep-sea creatures such as bone-white coral and the barreleye.
What has been discovered in the ocean depths
Take notes quickly！
重点词汇
more than 非常，极其 ;
straight out 直出
science fiction 科幻小说
surface 表面 ; 奥斯古德曲面
at the rate of 按…之比率
a strange fish 怪人 ; 奇人、怪人
below the surface 在表面下
be equivalent to 相当于 ; 等同于
one on top of another 重叠
still life 静物 ; 静物画 ;
The substance known as “fire ice”.
What has been discovered in the ocean depths
4 Furthermore, the oceans are a valuable source of natural resources, some of
which are completely new to us. Most notable of these is China’s discovery
of an ice-like substance, known as “fire ice”, under the South China Sea.
In addition, China’s underwater vessels, such as the Jiaolong and Shenhai
Yongshi, have been exploring waters at depths of thousands of metres.
The Jiaolong even holds the record for the deepest dive by a manned
submarine, at 7,062 metres, giving China its place alongside the world’s top ocean explorers. The research conducted by these vessels is giving scientists a greater understanding of how the sea bed was formed, as well as helping identify areas for deep-sea drilling, taking deep-sea exploration into a whole new era.
Take notes quickly！
重点词汇
natural resources 天然资源;自然资源
completely new 全新的
be known as 被称为 ; 被认为是 ;
South China Sea 南中国海 ; 中国南海 ; 中南海
In addition 此外，另外 ; 加之 ; 除…之外
thousands of 几千 ; 成千上万
conducted by 指挥
as well as 以及，既…又…，
deep-sea drilling 深海钻探
We still need to explore the unknown worlds.
What is the main idea of this paragraph
5 Being a tough environment of complete darkness, enormous pressure and intense cold, the ocean depths have long been beyond the reach of human exploration. However, through closer international scientific, economic and cultural cooperation, we are all becoming part of a global mission to open up our planet’s final frontier. Humankind is entering a new age of oceanic discovery, and the world beneath the waves may one day be almost as familiar to us as the land we walk upon today
Take notes quickly！
重点词汇
complete darkness 完全黑暗 ; 完美暗黑
ocean depths 深海
part of 部分
open up 将开封 ; 拆开 ; 开放
Humankind 人 ; 全人类
new age 新时代 ; 新世纪 ;
oceanic 海洋的 ; 大海的 ; 与海洋有关的
one day 一天；一日
be familiar to 熟悉 ; 为…所熟悉
Completing!
OVER THE CENTURIES: sailing across oceans to explore Earth’s furthest corners
Ocean exploration
MODERN AGE: exploring 1___________
deep sea
Completing!
2______________ exploration
Finding ancient ruins in 3_____________.
Working to overcome challenges and make
discoveries at 4__________.
Example:
5__________________
Archaeological
shallow waters
vast depths
the ruins of Neapolis
Completing!
6 __________exploration
Containing about 90 per cent of 7_______________.
Helping comprehend 8_______________________.
Examples:
9_______________ 10_____________
11_______________________________________
Biological
the planet’s fish
bone-white coral
the capacity for life on our planet
the barreleye
life to be found even around the deep-sea volcanic openings
Completing!
Discovery of natural resources
Discovering new natural resources.
Studying 12 __________.
Identifying areas for 13_______________.
Examples:
14__________
15_______________________
“fire ice”
deep-sea drilling
the sea bed
China’s underwater vessels
As you read, notice the discourse markers
used in the text, eg in addition, also, however,
furthermore, as well as. These markers
function like road signs, helping you connect
ideas and understand the writer’s attitude
and opinions.
Learning to learn
1. Why do you think the author uses statistics in the passage
The use of statistics makes the passage more convincing.
What other reactions could people have when facing the unknown
your opinions
... ...
technology
science
Try to think about others
Question
Talk with others.
Write your ideas.
1.
2.
3.
Thank you!

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