资源简介

(共22张PPT)
SB4U5 Diving Deep
(Developing ideas)
Lead in
Watch a video clip of Blue Planet II and think about the ocean exploration you know.
Pre-reading
Look at the picture and answer the questions. Do further research if necessary.
What different zones are there in the ocean
Which parts of the ocean do you think have been explored
What do you know about the deepest part of the ocean
The different zones in the ocean are Sunlight Zone(阳光地带), Twilight Zone(阴影区), Midnight Zone(午夜区) and Abyssal Zone(深海层).
200 m
1000 m
6000 m
11000 m
0 m
≈20℃
5-10℃
0-4℃
<0℃
We are entering a new age of oceanic discovery.
We have little knowledge of Earth’s sea bed.
Many archaeological finds are made in shallow waters.
There are extraordinary creatures in the deep sea.
The oceans are a valuable source of natural resources.
While-reading
Read for main idea
Skim the passage and match the main idea.
Para.5
Para.1
Para.2
Para.3
Para.4
Diving deep
Para. 1: Introduce the topic.
Para. 2-4:
Ocean
__________
Para. 2: the _______ of Neapolis
Para.3: amazing _____________ discoveries
Para. 5: _____________ is entering a new age of oceanic discovery.
Humankind
ruins
Para.4: __________ of natural resources
biological
discovery
exploration
While-reading
Read for structure
While-reading
Read for details
Scan the passage and complete the diagram.
deep sea
Archaeological
shallow waters
vast depths
the ruins of Ne polis
Biological
the planet's fish
the capacity for life on our planet
bone-white coral
the barreleye
life to be found even around the deep-sea volcanic openings
the sea bed
deep-sea drilling
“fire ice”
China's underwater vessels
While-reading
Read for writing skills
What writing skills are used in the passage
Statistics & examples
The discourse markers(语篇标记)
While-reading
statistics
While-reading
Examples
Examples in para.2
whole city buried beneath the waves
Roman city of Neapolis
location:___________________
time: ______________
cause:______________
off the coast of Tunisia
tsunami
the 4th century
While-reading
Examples
Examples in para.3
200 metres
dark zone
6000 metres deep
8000 metres
Name:_____________
Age: _____________
Name:_____________
Features: _____________
barreleye
transparent head
Eyes can look upwards
life to be found even around the deep sea vocalnic openings
bone-white coral
4000 years old
While-reading
Examples
Examples in para.4
China’s achievements:
New natural resource: __________
Underwater vessels: ___________________________
fire ice
Jiaolong & Shenhai Yongshi
Tip: The use of statistics and examples make the passage more convincing.
While-reading
discourse markers
Tip: These markers function like road signs, helping you connect ideas and understand the writer's attitude and opinions. (P77)
Post-reading
Think & Share
What common message do the two reading passages in this unit convey How do they each build upon this idea
Both passages convey the message that humans have the desire and means to explore the unknown.
The first passage does this by looking at our fascination with history’s greatest mysteries, while the second passage looks at pioneering exploration of Earth's oceans.
Post-reading
Group work
Watch the video clip of program Tides of Change and finish the following task.
Post-reading
Group work
“Creating a better livelihood” is shown in the video clip, which is also one of the purposes of China’s ocean exploration. Please introduce the influence of ocean exploration on people’s daily life for the audience according to the diagram below.(P77)
The air we breathe: The ocean produces over half of the world’s oxygen and absorbs 50 times more carbon dioxide than our atmosphere.
Climate regulation: Covering 70 percent of the Earth’s surface, the ocean transports heat from the equator to the poles, regulating our climate and weather patterns.
Food: The ocean provides more than just seafood; ingredients from the sea are found in surprising foods such as peanut butter and soymilk.
Medicine: Many medicinal products come from the ocean, including ingredients that help fight cancer, arthritis, Alzheimer’s disease, and heart disease.
Recreation: From fishing to boating to kayaking and whale watching, the ocean provides us with many unique activities.
Thank you~~

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