1、A dead polar bear found on the Arctic island has shocked experts who say climate change may be to blame for the animals death.The starved polar bear in Norway was said to be in good health in April when the Norwegian Polar Institute examined and tagged it.However，the animal was reduced to skin and b
2、ones by the time a group of explorers happened to find his body in July.“From his lying position in death，the bear appears to simply have starved and died where he dropped，”polar bear expert Dr.Ian Stirling told The Guardian.“He had no remaining fat，having been reduced to little more than skin and b
3、ones.”Stirling believes the bear starved to death as a result of a lack of sea ice，which the animals use as a platform for hunting seals.That may also explain why the 16yearold male bear was found about 155 miles north of where it was seen in April.Arctic sea ice reached a record low in 2012，accordi
4、ng to a report released this week by the National Oceanic and Atmospheric Administration，which pointed to continued signs of climate change.The International Union for Conservation of Nature currently has put polar bears into its Red List of Threatened Species.The Endangered Species Act states that
5、the government must act immediately to help save the polar bear from extinction.According to the World Wildlife Fund，only 20,000 to 25,000 polar bears remain on the planet.理解Read the passage and answer the following questions.1What may be to blame for the polar bears death?Climate change.2Why did th
6、e polar bear starve to death?It was a lack of sea ice.积累1be to blame for对负责2tag v. 跟在后面； 加标签于3starve v. 挨饿4release v. 发布5extinction n. 灭绝Section Starting out & Understanding ideasThe Monarchs JourneyMany animals move from one place to another at certain times of the year.This annual movement is call
7、ed migration.They migrate to find food, seek a partner, or in search of warmer weather.One of the most wonderful migrations in nature is that of the North American monarch butterfly.Every autumn, millions of these beautiful insects with fine black and orange wings begin a long and difficult journey.
8、Somehow they manage to travel around 4,000 kilometres south and find their way to California or Mexico.However，1until recently no one knew how they did this.1how引导宾语从句。2A team of scientists led by Professor Eli Shlizerman at the University of Washington has now found the answer.They have found out t
9、hat the monarch is able to tell the time of day.It uses its eyes to measure the position of the sun. 3These two pieces of information the time of day and the point where the sun is in the sky allow the butterfly to determine the way to go.4Eventually， it manages to reach the places where it will spe
10、nd the winter.2led .Washington为过去分词短语作后置定语。3where引导定语从句。4where引导定语从句。5The solution to the mystery of the monarchs amazing ability comes at a time when it is in serious trouble. Its population has crashed by as much as 90 per cent in the last few years.Sadly, human activity is the main reason why the
11、 number of monarch butterflies is falling.In many of the places where the butterfly can be found, people are destroying the natural environment.6They cut down trees and use chemicals that kill the plants that monarch caterpillars eat.5when引导定语从句。6两个that都引导定语从句，先行词分别为chemicals和plants。第一个that在从句中作主语，第
12、二个that在从句中作宾语。The research on the monarchs behaviourhas however led to a greater awareness of this creature.People have been working together to record its migration and make sure that there are enough plants for it to feed on.If this works，there may come a time when the number of monarch butterflie
13、s increases once again.7The more we know about this lovely creature, the greater the chance it will survive and keep its place in the natural world for a long time to come.7the more .，the greater .为“the比较级， the比较级”结构。from one place to another 从一个地方到另一个地方annual adj.一年一度的，每年的migration n迁徙migrate v移栖，迁
14、徙seek v寻找，寻求in search of 寻找insect n昆虫somehow adv.用某种方法；不知怎么地manage v完成(困难的事)；勉力完成 manage to do sth.设法做成某事lead (led，led，leading) v掌管；领导；率领；过(某种生活)lead to .导致professor n教授measure v量，测量position n位置allow v允许allow sb.to do sth.允许某人做某事allow doing sth.允许做某事determine v测定，确定eventually adv.终于，最终solution n解决，解
15、决方法a solution to .的解决方法amazing adj.惊人的，了不起的population n数量；人口crash v暴跌per cent n百分比destroy v破坏，毁掉cut down砍倒；减少chemical n化学品behaviour n行为；举止behave v表现；表现得体behave oneself 表现良好；行为良好awareness n认识；意识creature n生物，动物feed on 以为食survive v活下来，幸存参考译文黑脉金斑蝶的旅程许多动物都会在每年的特定时间从一处迁移到另一处。这种一年一度的行为叫作“迁徙”。动物为了觅食、寻找配偶或温暖
16、的环境而迁徙。自然界最为壮观的迁徙之一就是北美洲黑脉金斑蝶的迁徙。每年秋天，数百万只这种翅膀橙黑相间的美丽昆虫都会开启漫长且艰辛的旅程。它们总是能够完成约4,000千米的南行旅程，成功到达(美国)加利福尼亚州或墨西哥。然而，直到最近人们才明白它们是如何做到的。一支由伊莱史莱泽曼教授领导的来自华盛顿大学的科学家团队现已找到了答案。他们发现，黑脉金斑蝶可以判断时间，并能用眼睛测量太阳的位置。这两条信息一天中的时刻和太阳在天空中的位置让黑脉金斑蝶能够判定前进的方向，最终成功抵达过冬的地点。黑脉金斑蝶这一惊人能力的奥秘被揭开时，这一生物正处于水深火热的生存状态中。其数量在近年内减少了百分之九十之多。不
17、幸的是，人类活动是造成其数量下降的主要原因。在黑脉金斑蝶生存的许多地方，人们正破坏着那里的自然环境。他们砍伐树木，他们所用的化学制剂杀死了黑脉金斑蝶幼虫食用的植物。不过，对黑脉金斑蝶行为的研究也使得人们对这种生物有了更多的了解。人们已经在共同努力，记录它的迁徙，并确保它有足够的食物。如果这些努力产生效果，黑脉金斑蝶的数量在未来有可能再次回升。我们对这种可爱的生物了解得越多，它在自然界中得以长久生存并保持其位置的可能性就越大。Step One：Prereading 1Complete the following background information.Animal migration re
18、fers to the annual movement of a species from one place to another in response to seasonal changes to the environment, which often covers great distances.Migration happens in all parts of the animal kingdom, from fish and insects to birds, reptiles (爬行动物) and mammals (哺乳动物)2Tick the animals that mig
19、rate.monarch butterflyAtlantic salmonSiberian crane red pandakiller whale African lion(Answers may vary.)Step Two：Whilereading .Read for the main ideaWhats the main idea of the text?AHow to protect monarchs by knowing about their migration.BHow to understand monarchs migration.CHow the scientists do
20、 the research about monarchs.DHow the monarchs migrate every autumn.答案：A.Read for detailsRead the passage carefully and choose the best answers.1Which is not the possible purpose of migration?ATo find something to eat.BTo look for a partner.CTo search for warmer places.DTo experience travel.2What do
21、 we know about the monarch butterflies?AThey could travel 4,000 kilometers in one month.BSchlizerman found they spend the winter at home.CThey all know the solution to the serious trouble.DThey have beautiful appearance and amazing abilities.3How did some behaviours influence the monarch butterflies
22、?APeople cut down many trees and use pestkiller.BThe caterpillars eat too many monarchs.CThe butterflies amazing ability causes themselves trouble.DPeople are aware of the serious trouble monarch met.4How can we help the monarch butterflies?ACutting down more trees and using chemicals.BWorking as vo
23、lunteers to ensure their food.CKnowing more beautiful animals and plants.DKeeping their place in our mind for a long time.答案：14DDABStep Three：Postreading阅读课文内容， 在空白处填入1个适当的单词或括号内单词的正确形式。At certain times of the year，we can see many animals move from one place to another.This movement 1.is called (cal
24、l) migration.They migrate 2.to find (find) food, seek a partner or in search of warmer weather.Every autumn, millions of beautiful monarch butterflies begin the journey.They manage to travel a long distance to the places 3.where they will spend the winter.Scientists find the monarch is able to tell
25、4.the time of day.It uses 5.its (it) eyes to measure the position of the sun.But the population of them 6.has crashed (crash) in the last few years.Because in many places where the butterfly can be found, people cut down trees and use 7.chemicals (chemical) that kill the plants that monarch caterpil
26、lars feed 8.on.The research on the monarchs behaviour has led to a greater 9.awareness (aware) of this creature.The more we know about them, the 10.greater (great) the chance they will survive.重点单词1an international charity 一家国际性慈善组织2an annual event 一件年度大事3seek jobs 找工作4the best position 最好的位置5get a
27、job eventually 最终找到一份工作6reduce the amount of chemicals 减少化学用品量7destroy his confidence 击垮他的信心8the largest creature 最大的动物9the effect of heat on metal 热对金属产生的效应10measure your heart rate 测量你的心率11He was determined to become a straightA student, which was a determining factor to be admitted into Peking Un
28、iversity.(determine)12Attempts are being made to solve the problem of waste disposal, but theres no simple solution.(solve)13To his amazement, we were not amazed at his amazing achievements.(amaze)14He was the only survivor in that bad accident，and after the survival, he has been living a happy and
29、healthy life.(survive)掌握规律巧记单词1amaze v使惊奇，使惊讶ingamazing adj.惊人的，了不起的surprising adj.令人惊讶的interesting adj.有趣的frightening adj.令人恐惧的amusing adj.有趣的，好笑的2survive v活下来，幸存alsurvival n幸存，活下来arrival n到达，到来revival n复兴，复活 approval n赞同，批准 removal n去除.重点短语1Thousands were forced to migrate from rural to urban area
30、s in search of (寻找) work.2Some women do manage to (设法处理) achieve business success against all difficulties.3We must find a satisfactory solution to (的解决方法) the problem.4Make sure (确保) the electricity is switched off before you leave on holiday.5He cut down (砍伐) the tree and cut it up for firewood.6L
31、ack of exercise can lead to (导致) feelings of depression and exhaustion.7Snails feed on (以为食) fresh leaves and kill the plants.典型句式1教材原句One of the most wonderful migrations in nature is that of the North American monarch butterfly.句式分析that指代前面的可数名词。佳句仿写郊区的房租要比市中心的低很多。The rent of the suburbs is much l
32、ower than that of the downtown.2教材原句Sadly, human activity is the main reason why the number of monarch butterflies is falling.句式分析why引导定语从句。佳句仿写我没有告诉她结果是怕她伤心。The reason why I didnt tell her the result was that it would make her feel sad.3教材原句The more we know about this lovely creature, the greater t
33、he chance it will survive .句式分析the比较级， the比较级。佳句仿写你越小心，你犯的错就会越少。The more careful you are, the fewer mistakes you will make.1measure v量，测量；(长度，数量)量度为；衡量 n措施，方法(常用复数)(教材P50) It uses its eyes to measure the position of the sun.它用眼睛测量太阳的位置。(1)measure .by .用衡量(2)make .to ones own measure 依照某人的尺寸做(3)take
34、measures to do sth. take steps/action to do sth. 采取措施做某事(经典佳句)They measured the length of the garden.他们测量了花园的长度。练透一词多义It was Cao Chong who thought of a measure of measuring the weight of the elephant.方法测量Its generally acknowledged that education shouldnt be measured only by examination results.衡量The
35、 hall measures 200 metres long and 100 metres wide. 量度为单句语法填空The new bridge under construction, measuring (measure) twice as long as the old one, is due to be completed next month.补全句子史密斯先生要求裁缝照他的尺寸做些新衣服。Mr Smith asked the tailor to make some new clothes to his own measure.写美翻译句子我们应该立即采取措施保护环境。We sh
36、ould take measures to protect the environment at once.名师点津(1)measure表示 “措施” 之意时， 常用其复数形式measures。(2)measure表示 “量； 有长 (宽、高等)” 时， 是不及物动词， 后跟量的结果， 不用被动语态及进行时态；作定语时， 要用现在分词。巧学助记Much to her sadness, Selina has to wear the coats made to her own measure because shes getting fatter nowadays.Although she kno
37、ws beauty shouldnt be measured by a good shape, its time for her to take measures to lose weight.令Selina非常伤心的是，她不得不穿按她自己的尺寸做的外套，因为她最近胖了。尽管她知道美不能用好身材来衡量，但是时候她该采取措施减肥了。2position n位置；职位；处境，状况in a .position处于的地位/处境/位置in position 就位；在适当的位置out of position 在不适当的位置take the position of . 担任职位(经典佳句)I can tell
38、 the time from the position of the sun.我可以从太阳的位置知道时间。练透一词多义From his position on the cliff top, he had a good view of the harbour.位置This put him and his colleagues in a difficult position.处境I should like to apply for the position of sales director.职位单句语法填空The two teams are in position，ready to face o
39、ff.Sales director is a position where communication ability is just as important as sales skills.写美补全句子确保你在一个舒适的位置工作。Make sure that you are working in a comfortable position.名师点津position, point, case, stage, situation 等表示抽象地点的名词充当先行词时，若定语从句中缺少状语，则用where引导。3determine v测定，确定(教材P50) These two pieces of
40、 information the time of day and the point where the sun is in the sky allow the butterfly to determine the way to go.这两条信息一天中的时刻和太阳在天空中的位置让黑脉金斑蝶能够判定前进的方向。(1)determine to do sth.决定做某事determine on/upon (doing) sth. 决定(做)某事determine sb.to do sth. 使某人下决心做某事determine that . 决定(2)determined adj. 坚定的be de
41、termined to do sth. 决心做某事(3)determination n. 决心；决定with determination 坚决地(经典佳句)He has determined to work as a volunteer teacher in the countryside after graduation.他已经决定毕业后到农村支教。练透单句语法填空Paul was fond of Chinese culture, so he determined to settle (settle) in China.His determined (determine) look sugg
42、ested that he wouldnt change his mind.It takes hard work and determination (determine) to reach the goals that we want to achieve.The teachers encouraging words determined him to study (study) harder.写美补全句子凭着她的天赋和决心，爱丽丝摩尔似乎可以将天空作为自己的挑战极限。With her talent and determination, it appears that the sky cou
43、ld be the limit for Alice Moore.巧学助记The young man left school early and determined to do something great.The very determined man met with different challenges.With great courage and firm determination, he failed again and again only because of lack of necessary knowledge and skills.The failure deter
44、mined him to return to school.这个年轻人很早就辍学了，决心要做一番大事业。意志坚决的他屡屡碰壁。尽管有极大的勇气和坚定的意志，但是仅仅由于缺乏必备的知识和技能，他一次又一次地失败。失败使他下决心重返校园。4amazing adj.惊人的，了不起的(1)amaze v使惊讶(2)amazed adj. 吃惊的be amazed at/by 对大为吃惊be amazed to do sth. 惊奇地做某事(3)amazement n. 惊奇to ones amazement 令某人吃惊的是(经典佳句)(2020浙江高考)Taking pictures of polar
45、 bears is amazing but also dangerous.给北极熊拍照很神奇，但也很危险。练透单句语法填空We invite you to join us on an amazing (amaze) journey of language learning.Little Tom sat there watching the monkey dancing in front of him, amazed (amaze)We were amazed to find (find) that no one was hurt.写美补全句子令我非常吃惊的是，他的英语在老师的帮助下飞速进步。M
46、uch to my amazement, he has made rapid progress in English with the help of his teacher.名师点津amazing指“令人吃惊的”，强调某人/某事物给他人的感受；而amazed表示本身的感觉，并不强调对他人的影响，多指“(人)感到吃惊的”。5survive v活下来，幸存(教材P51) The more we know about this lovely creature，the greater the chance it will survive .我们对这种可爱的生物了解得越多，它生存的机会就越大(1)su
47、rvive the war/accident/flood/fire在战争/事故/洪水/火灾中幸免于难survive on 靠生存下来，维持生计survive from . 从存活下来，流传下来survive sb.by .years 比某人多活年(2)survival n. 幸存survivor n. 幸存者(经典佳句)These plants cannot survive in very cold conditions.这些植物无法在非常寒冷的条件下生存。练透单句语法填空Its reported that their chances of survival(survive) were sma
48、ll in this air disaster.Workers built shelters for survivors (survive) after the earthquake.Some interesting customs have survived from ancient times.I wonder how they can survive on such poor income.写美补全句子事实上，她比她丈夫多活了五年。As a matter of fact, she survived her husband by five years.名师点津survive作“幸存；幸免于
49、难”讲时为及物动词，其后直接跟宾语，不用介词加in或from。6effect n影响，结果(教材P52) Then use the sentences to complete the “causeeffect” flow charts.然后用句子来完成“因果”流程图。(1)have an effect on .对有影响have no/some/little/much effect on .对没有/有些/几乎 没有/有很大影响take effect 生效，起作用put/bring sth.into effect 实施计划；落实想法come into effect (法律等)生效in effect
50、 事实上(2)effective adj. 有效的；生效的(3)effectively adv. 有效地(经典佳句)Humor can have an effect on everything you do at school, at work, or in your personal life.幽默会对你在学校、工作或个人生活中所做的一切产生影响。练透单句语法填空Many new measures have been put into effect for health protection.Its an extremely effective (effect) cure for a hea
51、dache.The tablets work more effectively (effective) if you take a hot drink after them.Good books have had an effect on me since my childhood.写美补全句子新的交通规则开始实施了。现在，它开始起作用了。The new traffic rules came into effect.Now，it is beginning to take effect.7cut down 砍倒；缩减；降价(教材P51) They cut down trees and use c
52、hemicals that kill the plants that monarch caterpillars eat.他们砍伐树木，他们所用的化学制剂杀死了黑脉金斑蝶幼虫食用的植物。cut in插嘴；打断cut off 切断；阻断；隔绝cut out 裁剪；删掉cut up 切碎(经典佳句) For every tree cut down, three or four new ones are planted.每砍倒一棵树就要种上三四棵树。练透一词多义Many trees have been cut down in the past 20 years in my hometown.砍伐My
53、uncle hasnt been able to quit smoking, but at least he has cut down.缩减单句语法填空His mother has to cut up all the food for him when he was young.Cut out this article and show it to your bank manager.写美补全句子它防止那些与社会隔绝的人成为骗子的牺牲品。(20207月天津高考)It prevents people who are cut off from society falling victim to c
54、heaters.句型公式the比较级， the比较级(教材P51) The more we know about this lovely creature, the greater the chance it will survive .我们对这种可爱的生物了解得越多，它生存的机会就越大此句式意为“越，就越”，主、从句的两个谓语是同时进行的，表示一方随另一方程度的变化而变化。(1)从结构上看，第一个“the比较级”是表示条件的状语从句(在表示将来意义时，从句用一般现在时表示将来)；第二个“the比较级”是主句。(2)此结构可以用省略形式。(3)比较级and比较级，意为“越来越”。(经典佳句)T
55、he more you practise, the better you will speak English.你练习得越多，你的英语就会讲得越好。练透单句语法填空The harder (hard) you study，the more progress youll make.The more difficult (difficult) the questions are, the less likely he is to answer them.It becomes warmer (warm) and warmer when spring comes.写美补全句子离地面越高，空气就变得越稀薄
56、。The higher the ground is, the thinner the air becomes.维度一品句填词1An anonymous businesswoman donated one million dollars to the charity.2They sought (寻求) advice on how to project a more positive image of their company.3Modern farming methods can have an negative effect (影响) on the environment.4The mana
57、ger will have an interview with those who want to get the position (职位)5Share prices crashed (暴跌) to an alltime low yesterday.6The government has promised to reduce the amount of chemicals (化学品) used in food production.7Its cruel to kill beautiful and intelligent creatures like elephants.8Robert Dun
58、n is a professor (教授) at George Washington University.9The blue whale (鲸) is the largest living thing on the planet.10We measured (测量) the difference in temperature.维度二词形转换1It was amazing (amaze) that the boy was able to solve the problem so quickly.2Many people are very concerned about the destruct
59、ion (destroy) of the rainforests.3His only chance of survival (survive) is a heart transplant.4Eventually (eventual) your child will leave home to lead her own life as a fully independent adult.5Swallows begin their migration (migrate) south in autumn every year.6He fought the illness with courage a
60、nd determination (determine)7The company is still seeking a solution (solve) to its financial problems.8The hospital spends $1.1 million annually (annual) for its computer operations.维度三固定搭配和句式1She went to Hollywood in search of (寻找) fame and fortune.2Many laws have been passed to prohibit cutting down (砍伐) the trees.3It is a disturbing problem that many chemicals can lead to(导致) cancer.4As we all know, pandas feed on (以为食) bamboos.5It may take a long time to find a solution to (的方法) the problem.6The earlier (越早) you start, the sooner (越快) youll be back.