资源简介

(共37张PPT)
Developing ideas—
Reading Comprehension
1．Find out the reasons for humans to live on Mars.
2．Make correct inferences and get the evidences.
3．Retell the passage simply.
4．Share opinions about Mars after learning the passage.
Lead-in
Watch a video about The Martian《火星救援》
1. Where is the person in the video
2. Can human beings stay alive on Mars What should we do
Pre -reading
Work in plete the quiz and find out how much you know about Mars. Try to guess if you are not sure of the answers.
1．Mars is the ________ smallest planet in the solar system.
A．second 　B．third 　　C．fourth
2．The surface of Mars is covered in ________.
A．rocks 　B．water 　　C．grass
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√
3．The average recorded temperature on Mars is ________.
A．40℃ 　B．2℃ 　　C．－63℃
4．One day on Mars is about ________ long.
A．18 hours 　B．24 hours 　　C．37 hours
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√
Global warming
Heat wave
Today, environmental problems have taken over as the greatest risk to life on Earth.
bush fire
oil shortage
5．The title Plan B：Life on Mars means ______ to Mars one day will be human beings’ ______ choice for survival.
moving
second
Maybe one day we have to leave earth...
Let’s read the whole passage and find out why humans might live on Mars
While-reading
Fast-reading
1．What’s the main idea of the passage
A．Why humans cannot live on Earth.
B．How to live in harmony with nature.
C．The feasibility(可行性) study of living on Mars.
D．It’s impossible to live on Mars.
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2．Choose the magazine in which you would most likely find this passage.
A．The Traveller
B．All About Space
C．Environmental Concerns
D．Biology for Fun.
√
3．Fast-reading for the structure.
Reasons　　　　 Paras._____
Exploration Para.___
Challenges Para.____
Future Para.____
1－2
3
4
5
Careful-reading
Para.1
1．Para. 1 is about the _____ to life on earth.
2．The risks are ________________ and ______________________.
risks
nuclear missiles
environmental problems
3．What are the solutions to the risks
But scientists are also preparing for the worst：Plan B.
But they are also preparing for the worst: what can we do if the terrifying scenes in films such as The Day After Tomorrow happen in real life
coal and oil
renewable energy
Replacing coal and oil with forms of renewable energy.
Let’s enjoy the film mentioned in para 1.
Para.2
1．One option is to _____________________ to see if we could live on them. The most likely choice is ______.
2．Why is Mars our Plan B
Because Mars is relatively close to Earth and has an environment less hostile than that of other planets.
explore other planets
Mars
3．Why are films such as The Martian mentioned
They are mentioned to ___________________________________________________________.
show that our interest in Martian exploration is greater than ever before
Paras. 3—4
1．How do human beings explore the Mars
Sending unmanned spacecraft to Mars；
robots have explored the Martian surface；
space agencies of various countries are planning manned missions to Mars.
2．What are the challenges of moving to Mars？Find them in para.4.
(1)Sending people there will require all the skill，courage and intelligence of the human race.
(2)It would take months to reach Mars，travelling through dangerous solar radiation.
(3)Even if the first settlers do reach Mars safely，they may not be able to return to Earth—ever.
3．What is the Biosphere 2？Is it successful
It consisted of a closed space in which people，animals and plants could live together and it was designed to function with its own oxygen，food and water，needing nothing from the outside world.
It was not a success，but it provided us with a better understanding of how humans might be able to live on another planet.
Our future living environment on Mars!
Find the topic sentence of paragraph 5.
Until we are finally able to live on another planet，we need to take much better care of our own.
Para. 5
Right now, Earth is the only home we have!
The whole passage
1．Choose the statements that can be inferred from the passage.
1 Humans have yet not visited Mars.
2 People want to go to Mars on holiday.
3 There are plants growing on Mars.
4 The greatest risk to life on Earth used to be nuclear missiles.
5 One day，humans will have to go and live on another planet.
6 Our Plan A includes developing renewable energy resources.
7 The Biosphere 2 experiment ended in failure.
1　4　6　7
inferred from para. 3
inferred from para. 4
inferred from para. 1
inferred from para. 1
Learning to learn
Sometimes, we need to form opinions and draw conclusions that are not directly stated within the given information. For example, from the sentence “While the Moon can be reached within days, it would take months to reach Mars, travelling through dangerous solar radiation”, we can infer that the Moon is less exposed to dangerous radiation than Mars. Headings and pictures can also help us make educated guesses about a text.
2．What is the greatest risk to live on Earth now
A．Nuclear missiles.
B．Environmental problems.
C．Global warming.
D．Resource reduction.
√
3．Why do people choose Mars to explore
①Because it is relatively close to Earth.
②Because its environment is less hostile than that of other planets.
③Because it has an environment suitable for farming.
④Because it doesn’t need to be transformed to live on it.
A．①② B．①③
C．①④ D．①②③
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4．Which of the following is TRUE
A．People have sent Manned 1 spacecraft to Mars.
B．Our probes have orbited Mars，not sending back any valuable information.
C．Our robots have explored the Martian surface.
D．Due to lack of technology，it is unlikely that humans will explore Mars in the next 30 years.
√
5．From the last paragraph，we can infer that ________.
A．the day of human migration to Mars is not far away
B．because of the plan to immigrate to Mars，attention to Earth is not important
C．global warming has little to do with human activities
D．we still need to protect the Earth，despite the solutions to the risks
6．According to the passage，what is the style of the passage
A．Argumentation. B．Exposition.
C．Narration. D．Biography.
√
√
Post-reading
Discussion
1．Which is better，to live on Mars or to solve Earth’s problems Why？(Critical thinking)
Different people have different ideas.Possible answers：
(1)To live on Mars is better，because it is totally a new place.
(2)To solve Earth’s problems is better，because no other planet is more appropriate for humans to live on.
2．Can you think of a “Plan C” to save people from the problems on Earth？Share it with the class.(Creative thinking)
Summary
Human beings are faced with serious 1._____________(environment) problems，which lead scientists to consider moving to Mars 2._____ the environment is less hostile than 3.____ of other planets.Mars 4.______________(fascinate) people since ancient times and relevant movies also gain much 5.__________(popular)．Spacecraft and robots have been sent to explore Mars since the 1960s，encouraging more 6._________(country) to plan manned missions.There is no doubt that humankind 7.________(draw) towards Mars despite some challenges,8.___ human settlement of Mars is still decades away.We have to admit that 9.__________(protect) our earth is the most urgent step right now.We need to take much better care of 10.____(we) own planet.
environmental
where
that
has fascinated
popularity
countries
is drawn
but
protecting
our
In the 1960s and 1970s,the greatest fear was that the human race, and possibly all advanced life forms on the planet, could be wiped out by nuclear missiles, just at the push of a button .Today, however, environmental problems have taken over as the greatest risk to life on Earth. Scientists are thinking of ways to lower this risk, such as replacing coal and oil with forms of renewable energy. But they are also preparing for the worst what can we do if the terrifying scenes in films such as The Day After Tomorrow happen in real life What is our Plan B for Earth
that引导表语从句
只需按下一个按钮
adv. 然而，表转折
介词，作为
ways to do... ……的方法
replace ...with...用……取代……
为……准备
what if...如果……
Analyze the key points of the text
Paragraph 1
wipe out意为“彻底摧毁”
One option is to explore other planets to see if we could live on them. The most likely choice is Mars, which is relatively close to Earth and has an environment less hostile than that of other planets. Mars has fascinated people since ancient times, and today our interest in Martain exploration is greater than ever before. Films such as The Martian enjoy worldwide popularity. More governments and organisations are making efforts to educate the public on the Red Planet, for example, the Mars Desert Research Station in the Utah desert of the US and the Mars Village in North-west China’s Qinghai Province.
if引导宾语从句
which引导非限制性定语从句
代词，代指an environment
interest in...对……的兴趣
make efforts to do努力去做某事
Paragraph 2
adj.可能的
Since the 1960s, we have been sending unmanned spacecraft to Mars. Our probes have orbited the planet, sending back valuable data and stunning images. Our robots have explored the Martian surface, testing the soil and searching for resources, water and signs of life. Encouraged by discoveries over the years, space agencies of various countries are planning manned missions to Mars that could take place within the next 25 years.
现在完成进行时
现在分词作状语
并列现在分词作伴随状语
过去分词短语作原因状语
that引导定语从句
Paragraph 3
There is no doubt that humankind is drawn towards Mars, with dreams of making it our second home. However, sending people there will require all the skill, courage and intelligence of the human race. While the Moon can be reached within days, it would take months to reach Mars, travelling through dangerous solar radiation. And even if the first settlers do reach Mars safely, they may not be able to return to Earth-ever. Staying alive will be a daily challenge, but as proved by the Biosphere 2 experiment, not impossible.
There is no doubt意为“毫无疑问”；其后that引导的是同位语从句
动名词短语作主语
while用作并列连词，表示对比，意为“然而”
it形式主语，不定式真正主语
现在分词短语作伴随状语
动名词作主语
正如…… as 引导方式状语从句
让步状语从句
Paragraph 4
As early as the 1980s, scientists were building Biosphere 2 in the Arizona desert. It consisted of a closed space in which people, animals and plants could live together. The closed" concept meant that the space was designed to function with its own oxygen, food and water, needing nothing from the outside world. Although the two-year experiment was not a success, it did provide us with a better understanding of how humans might be able to live on another planet. More recently, scientists have succeeded in growing a variety of plants in an environment similar to that on Mars. That definitely is a big step forward.
早在20世纪80年代
由……组成
“介词+which”引导定语从句，可用where
宾语从句
分词短语作状语
success 可数名词，表示成功的人或事
更好的了解
介词后的宾语从句
succeed in doing成功做成某事
各种各样的
与……类似
被设计成
For now, human settlement of Mars is still decades away. In the meantime, scientific research shows that the planet Earth is getting warmer. This change is being caused by human activity and is having a terrible effect on the biosphere. Until we are finally able to live on another planet, we need to take much better care of our own. Right now, it's the only one we have!
到目前为止
同时
宾语从句
have a…effect on... 对……有影响
时间状语从句
现在，目前
定语从句
Paragraph 5
Find more examples about humans efforts to survive or adapt to the environment.
Homework

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