新教材2020-2021学年外研版英语高中选择性必修2课件：UNIT 5 PERIOD 2 UNDERSTANDING IDEAS .ppt

1、Unit 5 A delicate worldPeriod 2Understanding ideas要点内化课自主素养储备.根据语境选词填空dramatically,appetite,chaos,virus,departure,collapse,incident,intervention1.The worlds first transatlantic balloon race ended in _ last night.2.We are experiencing a _changed global landscape now.3.The time for my _ from Japan was

2、 drawing nearer every day.chaosdramaticallydeparture4.Symptoms are a slight fever,headache and loss of _.5.There are many different kinds of flu _.6.Greater government _ in businesses would represent a step backwards.7.26 people have been killed in a dramatic shooting _.8.If you cut the ropes of a t

3、ent,it will _.appetitevirusinterventionincidentcollapse.根据语境和汉语提示写出正确的单词1.Although he _(后来)became a successful businessman,his criminal past caught up with him.2.Nature _(保护)programs cannot function without local support.3.The farmer set a _(夹子;陷阱)for rats.4._(大量的)amount of money is also needed to b

4、uild local market.subsequentlyconservationtrapSubstantial5.Development has been guided by a concern for the _(生态)of the area.6.But they also warn that cases are now holding steady and could _(突然增加)again.7.The population began to _(减少)in that area.8.The only way on earth to _(增加)happiness is to divid

5、e it.9.Few countries have as rich a diversity of _(栖息地)as South Africa.ecologyexplodedecreasemultiplyhabitat词汇微空间形容词+-ly 副词dramatical(adj.)戏剧的;剧烈的dramatically(adv.)戏剧地;显著地subsequent(adj.)随后的;后来的 _(adv.)随后;后来sudden(adj.)突然的_(adv.)突然地careful(adj.)仔细的 _(adv.)小心地real(adj.)真实的 _(adv.)真实地subsequentlysudde

6、nlycarefullyreally.根据语境填入适当的介词1.I must say I owe all the achievements _ the encouragement and help from my friends.2.See if you can handle this young trouble-maker once and _ all.3.He suffered much _ consequence.4.No one has come _ with a definitive answer to it.toforinup5.The car had apparently hit

7、 a traffic sign and was out _ control.6.If these animals and plants die _,we will never see them again.7.Cars gradually took _ from horses in the history of transportation.8.Environmental design seeks to construct buildings in harmony _ the surrounding natural world.ofoutoverwith1.decrease v.(使)减少;(

8、使)变小 n.减少;降低 同义 reduction 反义 increase【观察悟】But although the virus caused the rabbit population to decrease from 130,000 to around 10,000,it also meant less food for the cats.(教材典句)但是,尽管该病毒使兔子的数量从130 000减少到10 000,但也意味着猫的食物减少了。The price of wheat has decreased by 15%.小麦价格降低了15%。知识素养积淀The number of indep

9、endent firms decreased from 198 to 96.独立公司的数量从 198 个减少到了 96个。There has been a decrease in traffic accidents.交通事故减少了。The birthrate is on the decrease.出生率正在下降。【生成得】decrease _.减少了decrease(from.)_.(从)减少到a decrease _在方面减少_the decrease在减少bytoinon【知识延伸】与increase,decrease搭配时,by表示数量增加或减少的幅度,即在原有的基础上“增加或减少了多少

10、”;to则表示“增加或减少到多少”。试比较:The production cost of these trucks has decreased by one third compared to last year.与去年相比,这些卡车的生产成本降低了三分之一。The population of India has increased to one billion.印度的人口已经增加到了十亿。【内化用】用合适的介词填空。It predicts the number of people living on less than$2 a day will decrease _ 24 million t

11、his year.Content of fat decreases _ 47.8%_ 37%.There has been a decrease _ exports.The demand for tea is _ the decrease.byfromtoinon2.departure n.离开;离开的飞机(火车);背离;违反 反义arrival 到达【观察悟】With the departure of the cats from the island,the mouse and rat population started to increase.(教材典句)随着猫从岛上离开,老鼠的数量开始

12、增加。All arrivals and departures should be listed on the timetable.(话题典句)所有到达和离开都应在时刻表上列出。It was a radical departure from tradition.这从根本上背离了传统。This is a point of departure in his research of ecology.这是他生态学研究的出发点。【生成得】a _ of departure 起点;出发点point【内化用】There are 120 _every day.每天有120次航班离港和抵港。The choice o

13、f color represents a _.颜色的选择摆脱了他一贯的风格。Now love may serve as _,but there is a more basic one.现在爱可以是出发点,但是还有一个基本出发点。arrivals and departuresdeparture from his usual stylea point of departure3.explode v.突然增加;爆炸;突然发生 派生explosion n.爆炸 explosive adj.爆炸的【观察悟】It turned out that they developed an immunity to

14、the virus,and their numbers exploded once again.(教材典句)结果,它们对病毒产生了免疫,种群数量再次激增。He added that such homemade bombs are rather unstable,and could explodeat any time.(时事典句)他补充说,这类自制炸弹相当不稳定,随时可能爆炸。Suddenly Charles exploded with rage.查尔斯勃然大怒。We all exploded into wild laughter.我们都一下子大笑起来。300 people were inju

15、red in the explosion.有300人在爆炸中受伤。The explosive device was timed to go off at the rush hour.爆炸装置被设定在高峰时间引爆。【生成得】explode _ sth.突然做起来;突然活跃起来explode _ sth.(人或形势)突然发生变化intowith【语境巧记】In that explosion case,the terrorist finally exploded the explosive and killed himself.在那个爆炸案例中,恐怖分子最终点燃炸药,炸死了自己。【知识延伸】类似的词

16、形变化的单词还有:conclude conclusion conclusivedivide division divisive【内化用】Stress can build up and _.压力可能积蓄并爆发出问题。Do you fear that youll burst into tears or _anger in front of her?你担心会在她面前放声大哭或是勃然大怒吗?explode into problemsexplode with4.take over占领,接管,控制【观察悟】With the withdrawal of outside medical teams from

17、Hubei,local medical staff will take over treatment atthe hospital.(时事典句)随着湖北省外医疗队的撤离,当地医务人员将会接管医院的治疗工作。These small animals quickly took over the island,eating the birds eggs and attacking baby birds.(教材典句)这些小动物很快占领了该岛,吃鸟蛋并攻击幼鸟。We eventually took off at 11 oclock and arrived in Venice at 13:30.我们终于在1

18、1点起飞,13:30到达威尼斯。No other organization was able or willing to take on the job.没有任何别的组织有能力或愿意承担此项工作。Theres a lot to take in at first.开始有很多东西需要领会。【生成得】【内化用】用合适的介词填空。I need one week to hand over and take _ my work.As trees grow they take _CO2 from the air.Dont take _ more responsibilities than you can h

19、andle.She decided that I was the ideal person to take _ the job.overinonon5.in consequence 结果;因此【观察悟】The cats in consequence turned their attentionand their stomachsback to the native birds,killing up to 60,000 each year.(教材典句)结果,猫把注意力和胃口转移到了本地鸟身上,每年杀死多达60 000只。In consequence of your bad work I am f

20、orced to dismiss you.由于你的工作很糟,我不得不把你解雇。【生成得】_ consequence结果;因此in consequence _由于inof【知识延伸】类似于in consequence和in consequence of的短语还有:in place 就位 in place of 代替;取代in need 在困难中 in need of 需要【内化用】_,he lost the opportunity.由于身体欠佳,他失去了这次机会。It is your heart that helps you care for family and _.正是你的心,让你懂得照顾家

21、庭和那些在困难中的朋友。In consequence of his ill healthfriends in need6.Experts felt it necessary to come up with a plan to remove all the rabbits from the island.专家认为有必要提出一项计划,从岛上清除所有兔子。【观察悟】Experts felt it necessary to come up with a plan to 形式宾语 真正的宾语remove all the rabbits from the island.本句是一个it作形式宾语的句子,真正

22、的宾语是后面的to do不定式,类似的句式还有:I find it pleasant to work with him.(it作形式宾语,代替不定式短语 to work with him)She thinks it her duty to help us.(it作形式宾语,代替不定式短语 to help us)I think it my honor to be invited to speak here.(it作形式宾语,代替不定式短语to be invited to speak here)Tom didnt find it difficult to write letters in Chin

23、ese.(it作形式宾语,代替不定式短语 to write letters in Chinese)All these noises made it impossible for me to go on with the work.(it作形式宾语,代替不定式短语to go on with the work)【生成得】句式总结:think/find/feel/consider/make/regard+_+_+不定式短语it形容词/名词【知识延伸】在少数情况下,it可以代替动名词短语,如:The professor considers it no good reading without unde

24、rstanding.Do you consider it any good trying again?He thought it absolutely senseless attempting the impossible.I dont think it worthwhile going to such a place.【内化用】他们感到很难在这么短的时间内完成工作。译:_ 老师认为进行演讲比赛是个好主意。译:_ He always regards it his duty to help the elders.译:_He found it useless(no use)arguing with

25、 him.译:_They felt it difficult to finish the work in such a short time.The teacher considered it a good idea to have a speech contest.他一直认为帮助老人是他的职责。他认为和他争吵没用。7.This incident made it clear that the rat,mouse and rabbit problem needed solving once and for all.这件事清楚地表明,老鼠和兔子的问题需要彻底解决。【观察悟】This inciden

26、t made it clear that the rat,mouse and 形式宾语宾语从句rabbit problem needed solving once and for all.本句中it作形式宾语,that引导的从句作真正的宾语。类似的句子还有:We all thought it a pity that the conference should have been canceled.我们都感到遗憾的是,会议本该被取消。I took it for granted that they were not coming.我想当然地认为他们不会来。【生成得】make/think/take.

27、+_+形容词/名词+_that宾语从句it【内化用】Ill see to it _in time.我会确保一切准备就绪。I feel it totally right that _.我一直认为,他们早晚会成功。Tom think _that Mary is getting married.汤姆觉得玛丽要结婚了是个谎言。that everything is readythey will succeed sooner or laterit a lie【备选要点】1.dramatically adv.显著地;戏剧性地 派生drama戏剧dramatic 戏剧性的;显著的;巨大的【观察悟】COVID-

28、19 is an unknown disease as a big health threat.It will change peoples lives dramatically.(时事典句)新冠肺炎是一种未知疾病,对健康构成重大威胁。它将极大地改变人们的生活。Other services vary dramatically in quality.其他服务在质量上差别很大。A fifth year of drought is expected to have dramatic effects on the California economy.第五年遭受旱灾预计会对加利福尼亚的经济产生巨大的影

29、响。She loves dance,drama and music.她喜欢舞蹈、戏剧和音乐。【知识延伸】英语中类似词形变化的单词还有许多,例如:romance;romantic;romanticallyfantasy;fantastic;fantastically【内化用】用drama的正确形式填空。Their arrival was _ and exciting.He knew nothing of Greek _.The cost of living has increased _.dramaticdramadramatically2.conservation n.保护;保持 派生cons

30、erve 节约;保护conservative 保守的;守旧的【观察悟】We urge Congress to increase farmland conservation.我们敦促国会增加农田保护。(高考典句)We should conserve oil and gas by making full use of other energy sources.我们应该通过充分利用其他能源来节省石油和天然气。A conservative estimate of the bill,so far,is about 22,000.到目前为止,这笔账单保守估计为大约2.2万英镑。【内化用】To _is Ch

31、inas basic state policy.节约资源和保护环境是中国的基本国策。He isnt interested in _.他对保护环境(这个问题)不感兴趣。People tend to be more aggressive when theyre young and _ as they get older.人们年轻的时候往往较为激进,而随着年龄的增长会变得保守起来。conserve resources and protect the environmentenvironment conservationmore conservative3.substantial adj.大量的,多的

32、;结实的;牢固的 派生substantially adv.非常;基本上;大体上【观察悟】Then,in 2006,the rabbits digging caused some land to collapse,and killed a substantial number of penguins.(教材典句)在2006年,兔子的挖掘造成一些土地塌陷,杀死了大量的企鹅。On the site were a number of substantial timber buildings.那块场地上建有若干结实的原木建筑物。The animal habitat was substantially d

33、amaged in the area.(话题典句)在这个地区,动物的栖息地受损严重。【内化用】翻译句子。What she says is substantially true.译:_。你可以节省大量的资金。译:_.她的话大体符合事实You can save a substantial amount of money4.intervention n.干预,介入 派生intervene v.介入;插嘴;打断(别人的话);阻碍;干扰【观察悟】This intervention is a long,much-delayed ending to a sad story.(教材典句)这次干预给这个悲伤的故

34、事划上了一个迟到的句号。Further heavy intervention would be throwing good money after bad.进一步加大干预的力度只会是继续白扔钱。The President intervened personally in the crisis.总统亲自出面处理这场危机。【内化用】She might have been killed if the neighbors hadnt _(介入).“We can solve our own problems and no _(干涉),please.”he continued.intervenedinte

35、rvention.根据语境和首字母提示写出正确的单词1.In fact,the landscape is d_ different from that of just a decade ago.2.The ducks have no a_ for this kind of insect.3.The airport promises that the d_ process will take less than 454 minutes.4.We really need to be thinking of that in terms of our i_ strategies.5.He said h

36、e was a doctor,but it s_emerged that he was a liar 课时素养达标ramaticallyppetiteeparturenterventionubsequently6.Do water and soil c_ work well,protect and improve our ecological environment.7.E_ is at the heart of many of our everyday concerns.8.The palace was to e_around them in three minutes.9.If I can

37、 share the house with someone else,it will d_ the total amount of the rent.10.And if you turn aside from this way of life,your troubles will m_.onservationcologyxplodeecreaseultiply.用本单元合适的短语完成句子1.It is our hope that the museum to be built at the original site next year will be _its surrounding buil

38、dings.2.We ask you to be aware of these,but not to let them _your life.3.But are we prepared to see people die and their cultures _?4.As is often the case,little boys tend to be very active and _.in harmony withtake overdie outout of control5.It takes more time than you think to _a good way of commu

39、nicating this.6._,the man no longer takes an interest in his own destiny but focuses on facts and things.7.She told him,_,that she would not marry him.8.He _ success in writing _ his teacher in the e up withIn consequenceonce and for allowesto.完成句子1.She _by herself.她认为要独自完成这个工作很困难。2.I _every morning

40、.我认为每天早上大声读英语很重要。3._.我认为最好与人和谐相处。finds it difficult to finish the jobthink it important to read English aloudI think it best to get along well with others4.She _that everyone should make a summary every day.她规定每个人每天都要做总结。5.Lily _about the matter.莉莉感觉跟他争论那件事没有用。6.We _good leaders.我们认为支持优秀领导人是我们的责任。makes it a rulefelt it no use arguing with himconsider it our duty to support