外研版（2019）选择性必修 第四册Unit 5 Into the unknown Vocabulary & Starting out课件(共33张PPT)

(共33张PPT)
Vocabulary & Starting out
Unit 5 Into the unknown
1. Learn the new words of Unit 5;
2.Cultivate the spirit of seeking truth and the awareness of protecting modern civilisation.
Activity 1　Read the words after listening.
1.civilization
2.intrigue
3.bury
4.downfall
5.ruin
6.abandon
7.dismiss
n. 文明(社会)　
v. (因奇特或神秘而)激起……兴趣，
引起……的好奇心
v. 将……埋在下面
n. 衰败
n. 残垣断壁，废墟
v. 离弃，逃离
v. 拒绝考虑，否定
Activity 2　Say the meaning of the following words and then read them together loudly.
8.expansion
9.retreat
10.subdue
11.uncharted
12.delve
13.shrink
14.investigation
n. 扩大,增加
v. 后退；离开；退避
v. 抑制(情绪)，克制
adj. 地图上没有标明的
v. 探索，探究
v. 退缩，畏缩
n. 调查
15.upwards
16.equivalent
17.stack
18.furthermore
19.notable
20.substance
21.drilling
adv. 向上，朝上
adj. 等同的；等值的；相当的
v. （使）整齐地堆起；摞起
adv. 而且；此外；不仅如此
adj.显要的；显著的；值得注意的
n. 物质
n. 钻探；勘探
1．expansion n.扩大，增加→expand v.扩张，使膨胀，展开
2．investigation n.调查→investigate v.调查
3．archaeological adj.考古(学)的→archaeology n.考古学→archaeologist n.考古学家
4．drilling n.钻探；勘探→drill v.钻孔；训练
5．abandon v.离弃，逃离；抛弃，放弃→abandoned adj.被抛弃的，被遗弃的
6．notable adj.显要的；显著的；值得注意的→notably adv.显要地；显著地→note v.注意；记录；强调n.笔记；便条；注释
Activity 3　Learn other forms of some words.
1. He ___________ on the point that no matter how much stronger it may become, never will China seek___________.( expand)
2. Having abused his position as mayor to give jobs to his friends, the man is now under _____________. The man being ____________ is William. (investigate)
3. They had ________oil for months. After months of ________, oil was found off the coast. (drill)
4. The woman ____________ her husband is living in an ___________ farm now.(abandon)
expanded
expansion
investigation
investigated
drilled
drilling
abandoning
abandoned
Activity 4　Fill in the blanks with the correct form of the words in brackets.
1.(因无人照料而）衰落，败落_______________
2.和……相一致,相符合 _______________
3.调查，检查 _______________
4.避开……；从……处脱身 _______________
5.动身踏上（漫长的）旅途 _______________
6.积极投入到……中 _______________
7.再三考虑，谨慎考虑 _______________
8.避免做，不愿做 _______________
9.调查（问题） _______________
10.逃跑，逃走 _______________
fall into ruin
correspond to
check out
steer clear of
set out
throw oneself into
think twice
shrink from
look into
make a gateway
Activity 5　Learn some phrases.
1.In this firm, the manager _____________ the general in the army.
2.A large number of churches _____________ after revolution.
3.After that, I ______ to read widely for an inspiring topic, wrote a speech, and practiced its delivery in beautiful pronunciation with good public speech skills.
4.A French tourist highly praised for rescuing a two-year-old girl in Manhattan said he didn’t ___________ before diving into the freezing East River.
5. You can pay the bill when you __________of the hotel.
corresponds to
fell into ruin
set out
think twice
check out
Activity 6　Fill in the blanks with words from the phrases above.
Before you watch
Into the Unknown
What comes to your mind first
something we can’t explain
an unexplored region
an unexplained phenomenon
Natural phenomena
Ancient civilisations
Universe
While you watch
1. What natural phenomena are mentioned in the video
2. How are the phenomena described From what aspects
Activity 1　Watch and Answer
1. What natural phenomena are mentioned in the video
the earthquake；the solar eclipse；thunder and lightning；the mirage
2. How are the phenomena described From what aspects
By comparing and describing from two aspects：their explanations in the past and the scientific explanations behind them.
Activity 2　Watch and Think
How the four natural phenomena are explained from the two aspects
Earthquake
＊explanations in the past
◆ Native Americans’ belief: earthquakes were caused by
_________________________________________________
◆ An ancient Japanese belief：earthquakes were caused by
____________________________________________________
＊the scientific explanations
◆They are actually caused by __________________________________
a struggle between the Thunderbird and a whale
the movements of a giant catfish carrying the world on its back
the movement of tectonic plates
The solar eclipse
＊explanations in the past
In many culture, they were caused by ____________
＊the scientific explanations
◆In fact, they happen when
____________________________________________
a creature
eating the Sun
Vietnam:__________
Norway:________
China:__________
a giant frog
a wolf
a huge dog
the Moon temporarily blocks the Sun’s light
Thunder and lightning
＊explanations in the past
◆ In Medieval Europe，people thought that
____________________________ caused them.
◆ It was a sign of ___________________.
＊the scientific explanations
◆ Lightning is ___________________________________; thunder is ___________________ caused by lightning.
supernatural forces caused them
bad times ahead
an electric charge moving between clouds
a shock wave of sound
Thunder and lightning
＊explanations in the past
◆ In Ancient China, people believed that this was actually caused by ___________________.
＊the scientific explanations
◆ These days, people know that a “mirage” happens when _______________________________________________.
the breath of a dragon
layers of air with varying temperatures cause light to bend
Look at the pictures on Page 65 and answer the questions.
1. What do you know about the following
2. What are they, what are their origins and why are they mysterious
Atlantis
Nazca Lines
Tunguska event
Black hole
Activity 1　Look, Think and Say
After you watch
What Origin Why is mysterious
Atlantis
Nazca Lines
Tunguska Event
Black Hole
Atlantis
Atlantis is a legendary city, which is described in the work of the Greek philosopher Plato(柏拉图).
The story of Atlantis with its fabulously wealthy and advanced civilisation which was swept into the sea to be lost forever has captured the imagination of readers for over two millennia.
What Origin Why is mysterious
Atlantis
Nazca Lines
Tunguska Event
Black Hole
a legendary city
the work of Plato
it was lost forever and
captured readers’ imagination
Nazca Lines(纳斯卡线条)
The Nazca Lines are a collection of giant geometric patterns and animal shapes. Drawn into the landscapes of southern Peru(秘鲁), the majority of the lines are believed to be the work of the Nazca people around 1AD to 700.
Numerous studies and theories have so far not explained the reason why the lines were created.
What Origin Why is mysterious
Atlantis
Nazca Lines
Tunguska Event
Black Hole
a legendary city
the work of Plato
it was lost forever and
captured readers’ imagination
a collection of giant geometric patterns and animal shapes
southern Peru
the reason of its creation cannot be explained
Tunguska event, (enormous explosion that is estimated to have occurred at 7:14 am on 30 June 1908, flattening some 2,000 square kilometres and charring more than 100 square kilometres of pine forest in Central Siberia (西伯利亚), Russia.
The energy of the explosion is estimated to have been equivalent to the explosive force of as much as a thousand times more powerful than the atomic bomb dropped on Hiroshima(广岛市), Japan in 1945.
Tunguska event(通古斯事件)
What Origin Why is mysterious
Atlantis
Nazca Lines
Tunguska Event
Black Hole
a legendary city
the work of Plato
it was lost forever and
captured readers’ imagination
a collection of giant geometric patterns and animal shapes
southern Peru
the reason of its creation cannot be explained
an enormous
explosion
Central Siberia
Russia
The energy of the explosion is astonishingly powerful.
Black hole
Black holes are some of the strangest and most fascinating objects in outer space.
A black hole is a region of space-time exhibiting gravitational acceleration(重力加速度).
Black holes are extremely dense, with such strong gravitational attraction that even light cannot escape their grasp if it comes near enough.
What Origin Why is mysterious
Atlantis
Nazca Lines
Tunguska Event
Black Hole
a legendary city
the work of Plato
it was lost forever and
captured readers’ imagination
a collection of giant geometric patterns and animal shapes
southern Peru
the reason of its creation cannot be explained
an enormous
explosion
Central Siberia
Russia
The energy of the explosion is astonishingly powerful.
a region of space-time
in outer space
strange, invisible but powerful;
even light can not escape
Activity 2　Discussion
1. Which of these do you most want to investigate Why
2. What other unsolved mysteries do you know of
Ancient Mysteries
A flash of lightning, a loud clap of thunder, the earth moving underneath our feet...These natural 1.__________(phenomenon) might be 2.___________(frighten), but we feel safer knowing the science behind them.
Native Americans used to believe that earthquakes were caused by a struggle between a large bird and a whale. 3.____ ancient Japanese belief was that earthquakes were caused by the movements of a giant catfish that carried the world on its back. Scientists now know that earthquakes are actually caused by the movement of tectonic plates, 4.______ are very large areas of Earth’s outer crust.
phenomena
frightening
An
which
Activity 3　Complete the passage and read it carefully
In many cultures, there were ancient 5._______(believe) that solar eclipses were caused by a creature 6._______(eat) the Sun. In Vietnam, that creature was a giant frog, in Norway, a wolf, and in China, it was a huge dog. 7.________ fact, solar eclipses happen when the Moon passes between Earth and the Sun, 8. ___________ (temporary) blocking the Sun’s light.
And finally, we’ve all heard tales of water appearing in the desert ahead of thirsty travellers. They race towards it, only 9.________(find) the water has disappeared. In Ancient China, people believed that this was actually caused by the breath of a dragon. These days, all schoolchildren learn that a “mirage” happens10._______ layers of air with varying temperatures cause light to bend.
In
when
temporarily
beliefs
eating
to find
Imagination is more important than knowledge, for knowledge is limited while imagination embraces the entire world and enables us to seek the truth.
1.Read the words fluently and memorize them.
2.Preview the text.
Homework