外研版 (2019)选择性必修 第二册Unit 6 Survival教课内容ppt课件

这是一份外研版 (2019)选择性必修 第二册Unit 6 Survival教课内容ppt课件，共51页。PPT课件主要包含了Reading，Mars，B ，C ，B ，Clues ，Clues，Questions，made前加was，去掉was 等内容，欢迎下载使用。
Unit 6Survival
T find ut the reasns fr humans t live n MarsT knw the prblems faced by human T knw the imprtance f prtecting the Earth
What have yu knwn abut the Mars?
the surface f Mars
Mars is slightly mre than half the size f Earth, with crrespnding lwer gravity. The atmsphere there is really thin, 100 times thinner than n Earth and it’s nt breathable. It’s 96 percent carbn dixide. It’s really cld there and there is quite a range f temperature. A day n Mars is abut as lng as a day n Earth, plus abut 39 minutes. Seasns and years are twice as lng as they are n Earth. Since the 1960s, Mars has been the subject f several unmanned explratin missins. Hwever, many f early missins failed. Mars is a lng way away, 1000 times farther away frm us than the mn.
Wrk in pairs. Cmplete the quiz and find ut hw much yu knw abut Mars. Try t guess if yu are nt sure f the answers.
1. Mars is the _____ smallest planet in the slar system. a secnd b third c furth2. The surface f Mars is cvered in _____. a rcks b water c grass
Hw much d yu knw abut MARS?
3. The average recrded temperature n Mars is __________. a 40 ℃ b 2 ℃ c -63 ℃4. One day n Mars is abut _____ lng. a 18 hurs b 24 hurs c 37 hurs
The lwest temperature will be -133℃ (degrees centigrade) and the highest will be 27 ℃.
It may be difficult t imagine when peple will live n the planet Mars.
Predict the main idea accrding t the title and the pictures.
Read and check yur predictin. Then chse the magazine in which yu wuld mst likely find the passage and give yur reasns.
The TravellerAll Abut SpaceEnvirnmental CncernsBilgy fr Fun
1. The Traveller: fcuses n the persn wh travels, what he sees, what he des r hw he feels. 2. All Abut Space: fcuses n the secret f the uter space, shwing varius fascinating natural phenmena.3. Envirnmental Cncerns: fcuses n varius envirnmental prblems, which usually draws peple’s great cncern.4. Bilgy fr Fun: fcuses n studies abut life and living rganisms fr fun, including their physical structure and chemical prcesses.
The characteristic f each magazine:
By reading the passage, we knw that tday envirnmental prblems have taken ver as the greatest risk t life n Earth (paragraph 1). Scientific research shws that the planet Earth is getting warmer (paragraph 5). All the clues tell us the passage is mst likely t be fund in the magazine — Envirnmental Cncerns.
1. What des Plan B mean in the passage? A. Replacing cal and il with frms f renewable energy n Earth. B. Explring ther planets, such as Mars, t live n. C. Educating the public t learn the knwledge f space. D. Using rbts t search fr new resurces.
Read the passage carefully and chse the best answer.
2. Why Mars is the mst likely chice t live n fr humans? A. Because there is n pllutin. B. Because there is much renewable energy. C. Because it is relatively clse t Earth. D. Because there is n risk t live there.
3. Human rbt have dne sme tasks except _______. A. searching fr water B. rbiting the planet C. testing the sil n the Mars D. explring the Martian surface4. Hw lng will it take us t reach Mars if we g there ne day? A. a few days. B. a few mnths. C. a few years. D. a few weeks.
1. Why d peple make Plan B?
Envirnmental prblems have taken ver as the greatest risk t life n Earth.
Read the passage t answer the questins.
2. Is it easy fr us t live n Mars?3. What shuld we d nw?
It is nt easy because it wuld take mnths t reach Mars, travelling thrugh dangerus slar radiatin. Even if the first settlers d reach Mars safely, they may nt be able t return t Earth. Staying alive will be a daily challenge.
We need t take much better care f ur wn planet until we are finally able t live n anther planet.
Read t find ut the detailed infrmatin abut the reasns why peple might live n Mars.
1. Mars is relatively clse t Earth. 2. Mars has an envirnment less hstile than that f ther planets.3. Our interest in Martian explratin is greater than befre.
4. Since 1960s, we have been sending unmanned spacecraft t Mars. Our prbes have rbited the planet, sending back valuable data and stunning images. Our rbts have explred the Martian surface, testing the sil and searching fr resurces, water and signs f life. 5. Encuraged by discveries ver the years, space agencies f varius cuntries are planning manned missins t Mars that culd take place within the next 25 years. 6. Mre recently, scientists have succeeded in grwing a variety f plants in an envirnment similar t that n Mars.
Smetimes, we need t frm pinins and draw cnclusins that are nt directly stated within the given infrmatin. Fr example, frm the sentence “While the Mn can be reached within days, it wuld take mnths t reach Mars, travelling thrugh dangerus slar radiatin”, we can infer that the Mn is less expsed t dangerus radiatin than Mars. Headings and pictures can als help us make educated guesses abut a text.
Chse the statements that can be inferred frm the passage.
1. Humans have yet nt visited Mars.2. Peple want t g t Mars n hliday.3. There are plants grwing n Mars.4. The greatest risk t life n Earth used t be nuclear missiles.5. One day, humans will have t g and live n anther planet.6. Our Plan A includes develping renewable energy resurces.7. The Bisphere 2 experiment ended in failure.
Space agencies f varius cuntries are planning manned missins t Mars that culd take place within the next 25 years (paragraph 2).
S number 1 “Humans have yet nt visited Mars” can be inferred.
In the 1960s and 1970s, the greatest fear was that the human race, and pssibly all advanced life frms n the planet, culd be wiped ut by nuclear missiles, just at the push f a buttn (paragraph 1).
S number 4 “The greatest risk t life n Earth used t be nuclear missiles” can be inferred.
Scientists are thinking f ways t lwer this risk, such as replacing cal and il with frms f renewable energy (paragraph 1).
S number 6 “Our Plan A includes develping renewable energy resurces” can be inferred.
As early as the 1980s, scientists were building Bisphere 2 in the Arizna desert. Althugh the tw-year experiment was nt a success (paragraph 4).
S number 7 “The Bisphere 2 experiment ended in failure” can be inferred.
1. Wuld yu like t be ne f the first peple t live n Mars? Why r why nt?2. Which is better, t live n Mars r t slve Earth's prblems? Why?3. Can yu think f a “Plan C” t save peple frm the prblems n Earth? Share it with the class.
4. What theme d the tw reading passage in this unit have in cmmn? On what aspects des each passage fcus?
The tw passages share the theme f prtecting ur living envirnments. The first passage fcuses n balancing nature and urban develpment, and the need fr harmny between humans and animals. The secnd passage fcuses n ur need t prtect Earth even if we intend t settle n ther places such as Mars in future.
Wrk in pairs. Cnduct an interview abut living n Mars.
1. Decide yur rles.2. Lk at the sample questins abut living n Mars and add any mre yu can think f. Then write dwn sme answers.
What shuld yu d befre yu have an interview?Knw smething abut the tpic yu are ging t interview.Knw abut the persn yu are ging t deal with. List all the questins yu hpe t find ut. Prepare mre ways t get the same infrmatin.
What can yu see frm the windw f the spacecraft?Can yu g utside?Hw d yu get fd n Mars?What d yu miss abut Earth?
1. In the 1960s and 1970s, the greatest fear was that the human race, and pssibly all advanced life frms n the planet, culd be wiped ut by nuclear missiles, just at the push f a buttn.
wipe ut: t destry r remve sb./sth. cmpletely   彻底摧毁，消灭
eg The whle village were wiped ut by the earthquake.
【语境应用】翻译句子。昨天的洪水摧毁了许多村庄。
Yesterday’s flds wiped ut many villages.
2. It cnsisted f a clsed space in which peple, animals and plants culd live tgether.
eg Their diet cnsists f vegetables and fruits.
cnsist v. 由……组成 cnsist f: t be frmed frm tw r mre things r peple 由……构成，由……组成 不用于被动语态和进行时
cnsist f & make up
eg A car cnsists f many different parts. = A car is made up f many different parts. = Many different parts make up a car.
找出下面句子中的错误，并在横线处改正。1) She said that team made up f representatives frm every prvince.  _______________2) The medical team, which was cnsisted f thirteen dctrs, arrived at the village yesterday.  _______________3) His jb is cnsisted f helping ld peple wh live alne.  _____________________
is cnsisted → cnsists
3. Fr nw, human settlement f Mars is still decades away. In the meantime, scientific research shws that the planet Earth is getting warmer. fr nw = right nw 目前，暂时 in the meantime 与此同时, 在此期间 Paraphrase: At the present time, it will be decades befre humans can settle n Mars. Meanwhile, scientific research shws that the planet Earth will cntinue getting warmer.
that引导表语从句，表语从句中的主语为the human race, and pssibly all advanced life frms n the planet。
Paraphrase: The human race, and pssibly all advanced life frms n the planet, culd be eliminated by nuclear missiles easily. That was the greatest fear in the 1960s and 1970s.
In the 1960s and 1970s, the greatest fear was that the human race, and pssibly all advanced life frms n the planet, culd be wiped ut by nuclear missiles, just at the push f a buttn.
表语从句常用的关联词有that, what, which, wh, hw, whether, if等。eg This is why she failed t pass the exam. The truble is that I have lst the letter.
2. There is n dubt that humankind is drawn twards Mars, with dreams f making it ur secnd hme. There is n dubt that 毫无疑问…… that引导同位语从句，解释说明dubt的具体内容。 同位语从句一般由that, wh-类连接词引导，常放在dubt, fact, news, idea, truth, hpe, thught等抽象名词后，解释说明该名词的具体内容。
eg The news that ur team has wn the game is true. I have n idea where they have gne.
3. While the Mn can be reached within days, it wuld take mnths t reach Mars, travelling thrugh dangerus slar radiatin. 这里的days和mnths都表示约数，两者可形成一定对比。 while引导的让步状语从句。 Paraphrase: It takes days fr peple t reach the Mn, but it wuld take mnths t reach Mars, travelling thrugh dangerus slar radiatin.
while和althugh都可以引导让步状语从句，它们在使用时既有不同点又有相同点。
eg While I like the style f the dress, I dn’t like the clur. Althugh the car is very ld, it can run pretty fast. While a prttype may wrk well in a test, it may nevertheless run ut f cntrl when used in practice.
4. Staying alive will be a daily challenge, but as prved by the Bisphere 2 experiment, nt impssible. as引导定语从句，as指代整个主句的内容，从句是as is prved by the Bisphere 2 experiment的省略。
as引导定语从句(1) as引导定语从句时，as可以指代一个词或短语，但更常见的事指代整个句子。eg The tw brthers were satisfied with this decisin, as was agreed t befrehand. (as指代decisin)T shut yur eyes t facts, as many f yu d, is flish. (as指代整个不定式短语)She is late, as is ften case. (as指代整个主句)
(2) as引导非限制性定语从句时，as“正如，正像”。通常有以下固定的表达：as we all knw 正如大家所知as I can remember 正如我所记得的as ften happens 正如经常发生的as yu see 如你所见as has been said befre 如前所述as is well-knwn 众所周知as was expected 正如预料的那样as is ften the case 情况常常如此
(3) 当主句的先行词被the same, such, s等修饰时，要用as引导定语从句，as在句中作主语、宾语或表语。eg This is the same bike as I lst yesterday. I never heard such stries as he tld.
The passage mainly tells us that the planet Earth is getting warmer and warmer, and nw ur envirnmental prblems have taken ver as the greatest risk t life n Earth. Explring Mars is the mst likely chice due t its natural gegraphical cnditins. Althugh we have been making effrts, fr nw, human settlement f Mars is still decades away. We need t take much better care f the planet Earth.We als need t make greater effrts t realize ur dream.
1. Read the passage again and retell the passage.2. Review the new wrds and language pints yu have learned.