2017-2018学年度人教版必修2Unit 4 Using language课件(共51张PPT)

Dinosaurisananimalthatwecannotseeontheearthnow.Whatweseeinthemuseumarethefossilsofmanykindsofdinosaurs.Somedinosaurshavelongnecksandtails,whileotherslooklikebirds.Enjoythevideo1.Whendiddinosaurslive?Tensofmillionsofyearsago.2.Whendiddinosaursdieout?About65millionyearsago.Readthetextcarefullyandfillintheblanks.AnimalsDetailsDinosaurs★Theylivedontheearthtensofmillionsofyearsago.★Thereweremanydifferentkindsofdinosaurandanumberofthemusedtolivein______.ChinaAnimalsDetailsDinosaurs★The_____oftwenty-fivespecieshavebeenfoundinHenanProvince.★Notlongagoa(n)_____newspeciesofbird-likedinosaurwasdiscoveredinLiaoningProvince.Scientistsfoundtheycouldnotonlyrunliketheothersbutalso_______trees.eggsrareclimbAnimalsDetailsDinosaurs★They________suddenlyabout65millionyearsago.Nobodyknowsforsurewhyand_____dinosaursdisappearedfromtheearth.________★Itisoneoftheanimalsandplantsthathavediedoutinthe_____500years.lastdiedouthowThedodoAnimalsDetails__________★ItlivedontheIslandofMauritiusandwasaveryfriendlyanimal.Thedodo1.TherearemanydifferentspeciesofdinosaurandallofthemhavebeenfoundinChina.2.Notlongago,ararenewspeciesofbird-likedinosaurwasdiscoveredinHenanProvince.severalLiaoning3.Somescientistsaresuredinosaursdiedoutbecausetheearthgottoohotforthedinosaurstoliveonanymore.4.Dinosaursdiedoutquicklyabout65millionyearsagoandmanyanimalshavediedoutinthesameway.thinkDinosaursdiedoutquicklyabout65millionyearsagoandmanyanimalshavediedoutinthesameway.Thedodoisoneofthem.Pleaselistentoastoryofthedodoandhowitdisappearedfromtheearth.dodo渡渡鸟Dodo鸟是一种不会飞的鸟，仅产于毛里求斯。拥有肥胖的身子和巨大的嘴。16世纪后期，欧洲殖民者来到了毛里求斯。不会飞又跑不快的Dodo鸟很快成为欧洲人来到岛上后主要的食物来源。人们开始大量的滥捕滥杀可怜的Dodo鸟，有时每天可以捕杀到几千只到上万只。由于过度的捕杀，很快岛上Dodo鸟变得越来越少。1681年，最后一只Dodo鸟被残忍的杀害后，从此，地球上再也见不到这种东西了，除非是在博物馆的图片中。Listentothetapeandchoosethesentencewhichgivesthemainideaofthestory.Saywhatiswrongwiththeotherthree.1.Thisstoryisabouthowfoolishthedodowas.2.Thisstoryisabouthowthedodobecameextinct.3.ThisstoryisabouthowthedodoandManbecamefriends.4.Thisstoryisabouthowtheotherbirdsandanimalstriedtosavethedodo.Number2iscorrect.Number1iswrong.Itisnotfairtoblamethedodoforhisdisappearance.Number3onlyexplainshalfthestory.Thedodoandmandidbecomefriendsbutonlybecausemanwantedtokillallthedodosaseasilyaspossible.Number4iswrongbecausetheotheranimalsandbirdsdidnotdomuchtosavethedodo.Theywarnedhimbutdidnothelphim.Listentothetapeandchoosethecorrectanswertocompleteeachsentence.1.Thedodois_____.A.fierceB.unkindC.friendlyD.foolish2.HewantstobelievethatManistellingthetruthbecause_____.A.ManisfriendlyB.hethinksManisfriendlyC.hethinksthebearsandmonkeyslieD.Manishisbestfriend3.Hedidn’trealizewhohadkilledmanyofhisfriendsuntil_____.A.MantoldhimthetruthB.theotherbirdstoldhimC.hesawhowhisfriendwasbeingkilledbyManD.themonkeystoldhimInpairschooseanotherendangeredanimalwhichyouknowabout.Analysewhythisanimalisendangered.*Isitbeinghuntedandkilled?*Doesitnothaveenoughfood?*Isitbecauseitshabitatisbeingthreatened?IntentionPurposeI’mgoingtotohelp/saveIintend/mean/plantotoprotect…from…Iwillsothat…Discusswhatyoumightdotosaveit.Theseexpressionsmaybeusefultoyou.I’drathernot…I’dliketoI’mreadytoIfeellike…inorderto…butdo…toteachthemalesson.topunishthosewhodoharmtowildlife.1.Theylivedontheearthtensofmillionsofyearsago,longbeforehumanscameintobeingandtheirfutureseemedsecureatthattime.千百万年前，恐龙就在地球上生活，比人类的出现要早得多，当时它们的前景好像也很安全。本句是一个由and连接的并列句，其中，longbefore引导时间状语从句，进一步解释说明tensofmillionsofyearsago，意为“在……之前很久”。注意：beforelong意为“不久以后”。e.g.IknewTomlongbeforeIknewyou.我在认识你之前很久就认识汤姆了。Wehopetofinishourexperimentbeforelong.我们希望不久就把实验做完。It___longbeforewe___theresultoftheexperiment.A.willnotbe;willknowB.is;willknowC.willnotbe;knowD.is;knowontheearth在地球上。在earth,sun,moon等表达世界上独一无二的名词前,要加the。comeintobeing的意思是“开始存在;发生”。e.g.我们不知道这世界是什么时候存在的。Wedon’tknowwhentheworldcameintobeing.2.Whenscientistsinspectedthebones,theyweresurprisedtofindthatthesedinosaurscouldnotonlyrunliketheothersbutalsoclimbtrees.科学家们观察它们的骨头时，惊奇地发现它们不仅跟其他恐龙一样可以跑，而且还可以爬树。本句中的tofindthat...是不定式作原因状语。不定式用来表原因时，常修饰表示情感、心理状态、性格等的形容词，如：happy,glad,lucky,fortunate,surprised,angry,anxious,cruel,clever,frightened,shocked,sorry,eager,proud,disappointed,foolish,impatient,unwise,naughty等。如：Weweresurprisedtoseehim.我们真想不到会见到他。WeareproudtobeyoungpeopleofnewChina.作为新中国的青年，我们感到很骄傲。Youwerefoolishtoactlikethat.你那样做很愚蠢。3.Somescientiststhinkitcameafteranunexpectedincidentwhenahugerockfromspacehittheearthandputtoomuchdustintotheair.有些科学家认为恐龙灭绝是发生在一件意外事故之后，当时宇宙间一块巨石击中地球因而在空气中扬起太多的尘土。本句中when引导定语从句，其先行词为incident。关系副词when的先行词一般是表时间的名词，如:HecamelastnightwhenIwasout.但有时并不直接是表时间的名词，如：In1921EinsteinwontheNobelPrize,andwashonoredinGermanyuntiltheriseofNazismwhenhewasdrivenfromGermanybecausehewasaJew.1921年爱因斯坦获得了诺贝尔奖，他在德国很受尊敬。纳粹上台后由于他是犹太人而被赶出了德国。4.AccordingtoaUNreport,….根据联合国的的一份报告，……accordingto根据,据……说e.g.AccordingtoJohn,thebankclosesat4p.m.据约翰说，银行在下午4点关门。Eachmanwillbepaidaccordingtohisability.每个人将根据他的能力获得报酬。I.根据下列各句句意及所给单词的汉语提示，写出所缺单词的正确形式。1.Mysoncanremembereverysmall________(事件)ingreatdetail.2.Itwasoneoftheregion’smost______(猛烈的)stormsinyears.fierceincident3.Thewi