高中北师大版英语选择性课件PartⅡLesson1TheSixthExtinction

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1、PartLesson 1The Sixth Extinction双基夯双基夯实实 课课前排前排查查核心突破核心突破 要点要点讲讲解解夯夯实实基基础础 一遍落一遍落实实开放开放课课堂堂 自修自自修自读读【学习目标】话题语境 人与自然之人与环境、人与植物的探讨课时词汇 mass,varied,decrease,blame,rate,quantity常用短语dieout,beatrisk,betoblame,dependon/upon,takeaction,takesteps,setup,inshort,wipeout重点句式(1)介词提到关系代词前的定语从句(2)it作形式主语,主语从句作真正的主

2、语(3)含有without的含蓄虚拟条件句双基夯双基夯实实 课课前排前排查查.核心单词练习:请根据所给的词性和词义写出单词1_vt.(使)恢复2_vi.&vt.(使)孵化3_adj.濒危的4_vt.影响5_vt.责怪,指责6_vi.&vt.减少n.减少;减少的量7_adj.各种各样的,形形色色的8_adj.大量的9_adj.异常的;不平常的10_n.物种,种restorehatchendangeredaffectblamedecreasevariedmassunusualspecies.常用单词练习:根据句意和所给的首字母或中文提示写出符合句中单词的正确形式1Theseexerciseswil

3、lhelpyou_(恢复)yourfullhealth.2Tenchicks_(孵化)outthismorning.3Manymeasureshavebeentakentosave_(濒危的)wildlifeinChina.4Sofar,morethansevenmillionpeople_(影响)bydrought.restorehatchedendangeredhave been affected5Whichdriverwas_(责怪)fortheaccident?6Peopleshouldd_theamountoffattheyeat.7Itisessentialthatyourdiet

4、isv_andbalanced.8Theskywasfullofdarkm_ofclouds.9Theweatherisabitu_thesedays.Itstoohot.10Thereareseveralthousands_oftreeshere.to blamedecreasevariedmassesunusualspecies.阅读本部分内容,翻译相关短语1采取措施_2由于,幸亏_3总之_4处境危险,受到威胁_5依赖,依靠_6由于_7负有责任_8毁灭;抹去_9消失;绝迹,灭绝_take steps/actionthanks toin shortbe at riskdepend ondue

5、 tobe to blamewipe outdie out核心突破核心突破 要点要点讲讲解解第一版块:重点单词1.mass adj.大批的,数量极多的,广泛的。仅用于名词前。nC堆,团,块;C,usually sing.大量,许多;pl.大量的东西nU(物理学中的)质量the masses pl.群众(教材P52)About what percent of all species on Earth became extinctduringthemassextinctionknownasthe“GreatDying”?在被称为“大灭绝”的大规模灭绝期间,地球上的所有物种中,有大约百分之几的物种灭

6、绝了?massproduction批量生产amassof一堆;大量的massesof成堆的;大量的alandmass陆块,地块Theirlatestproductisaimedatthemassmarket.他们的最新产品瞄准了大众市场。A mass ofbooksandpapersareonhisdesk.在他书桌上有一堆书和文件。Whereverthebandwent,masses offanswouldwelcomethemattheairport.无论这支乐队去哪儿,都会有大量的歌迷在机场欢迎他们。Aliterofgasolinehaslessmassthanaliterofwater

7、.一升汽油的质量比一升水的质量小。TheTVprogrammebringssciencetothemassesandenjoysgreatpopularity.这个电视节目向群众普及了科学知识,很受欢迎。特别提醒:amassof/masses of后可跟可数名词复数或不可数名词,当“a mass of/masses of名词”作主语时,其谓语动词的形式以of后名词所表达的意义而定。Masses of customers are entering the supermarket.大批顾客正进入超市。Amassofsnowliesintheyard.院子里积了大量的雪。即学即练判断下列句子中mas

8、s的词性及含义/语法填空ThepolarbearisfoundintheArcticCircleandsomebiglandmassesasfarsouthasNewfoundland._Recentdevelopmenthasmadepossiblemachinesthatprint,cook,andservefoodsonamassscale._Pluto (冥王星) and Triton (海王卫一) have nearly the same size,mass, anddensity(密度)_Thegovernmentcaresmuchabouttheinterestsandwell-

9、beingofthemasses._Amassofwork_(do)topreventtheriverfrombeingpolluteduptonow.Theyoungdancerslookedsocharmingintheirbeautifulclothesthatwetook_(mass)ofpicturesofthem.n.块adj.大批的n.质量n.群众has been donemasses2.decrease nC,U减少,降低vi. & vt.(使大小、数量等)减少,减小,降低(教材P52)According to scientists,they include volcanic

10、eruptions,asteroidshittingtheEarthfromspace,changesinsealevels,thedecreaseoftheoxygencontentoftheseaandglobalwarming.科学家认为原因包括火山爆发、小行星从太空撞击地球、海平面变化、海洋含氧量下降和全球变暖。adecreasein.在方面减少onthedecrease在减少decreaseby.减少了(表示减少的量)decrease(from.)to.(从)减少到(表示减少后的量)decreasein.在方面减少Therehasbeena decrease inthenumbero

11、fyoungpeopleoutofwork.失业青年人数已经有所下降。Thedemandforcornisonthedecreaseeachyearinthiscountry.这个国家对玉米的需求量在逐年减少。Peopleplantedtreesonthewastehillstodecreasesoilerosion.人们在荒丘上种植树木以减少水土流失。Thenumberofthestudentsinourschoolhasdecreased to1,200.我们学校的学生数量已减少到1200人。Comparedwithlastyear,thepriceofwheathasdecreased

12、by15%thisyear.和去年相比,今年小麦的价格已降低了15%。归纳拓展:increase(1)vi.&vt.(使)增长,增多,增加(2)n.C,U增长,增多,增加increaseto.增加到(表示增加后的量)increaseby.增加了(表示增加的量)ontheincrease在增加increasein.在方面增加表“开、关”的英语短语比较:thedoor/windowturnon/off the light/theradioswitchon/offtheelectricmachine注意:旋转开关的电器用turnon/off闸刀开关的电器用switchon/off门窗用open/cl

13、ose即学即练单句语法填空InrecentyearssomeInuitpeopleinNunavuthavereportedincreases_bearsightingsaroundhumansettlements,leadingtoabeliefthatpopulationsareincreasing.Theaccidentshavedecreased_20%sincethemeasuresweretaken.Thecrimerateinthisareahasdecreased_thelowestlevelnowadays.Teaisstillalargepartofdailylifeint

14、heUKtoday,butitseemstobe_thedecrease.Foodpricesincreased_10%inlessthanayear.inbytoonby3.blame vt.责怪,指责,把归咎于nU责任,责备(教材P52)Thistime,humanactivitywillbetoblame.这次,人类活动是肇因。blame.for(doing)sth.因(做)某事责备blamesth.onsb./sth. 把某事归咎于某人/某事betoblamefor(doing)sth.因(做)某事应受责备;对(做)某事负有责任(不定式用主动形式表示被动意义)take/beartheb

15、lameforsth.承担某事的责任lay/puttheblame(forsth.)on.把(某事的)责任归咎于Dontblamehimfor breakingthatvase;afterall,heisonlyachild.别怪他打碎了那个花瓶,毕竟,他只是个孩子。Theyblamedthefailureofthebusinessontheeconomicdownturn.他们把生意的失败归咎于经济衰退。Thehotweatherispartlytoblame forthewatershortage.炎热的天气是缺水的部分原因。Wewerereadytotakethe blame forwh

16、athadhappened.我们准备好对所发生的事承担责任。Health officialsput the blame for the disease on poor housingconditions.卫生官员们将该疾病的暴发归咎于恶劣的居住条件。语境串记:Heisblamedforthebigmistake,butheblameditonothers.Infact,itishe,notothers,thatistoblameforit.他因这次严重的错误受到了责备,但他把它归咎于别人。事实上,应该是他,而不是别人,应对此负责。考向追踪:高考通常从以下几个角度设题对blame进行考查;(1)to blame作表语或定语时要用主动形式表示被动意义;(2)通过非谓语动词结构对blame进行考查;(3)blame后的介词既可以用on又可以用for,on表示责怪的对象,for表示责怪的原因。即学即练单句语法填空/单句写作Somepeopleblamethesmartphone_thetragedy,yetinfactpeoples weakening self-control and sel

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