人教版高中英语必修二精编课件：Unit4Using-Language

ReadingIIDinosaurisananimalthatwecannotseeontheearthnow.Whatweseeinthemuseumarethefossilsofmanykindsofdinosaurs.Theywerefoundbythepeopleathomeandabroad.Somedinosaurshavelongnecksandtails,whileotherslooklikebirds.UsinglanguageReading1.Whendiddinosaurslive?Tensofmillionsofyearsago.2.Whendiddinosaursdieout?About65millionyearsago.3.Howdiddinosaursdieout?Alargerockhittheearthandputtoomuchdustintotheair.Theearthgottoohottoliveon.Trueorfalse

TherearemanydifferentspeciesofdinosaurandallofthemhavebeenfoundinChina.Notlongago,ararenewspeciesofbird-likedinosaurwasdiscoveredinHenanProvince.severalLiaoningFF3.Somescientistsaresuredinosaursdiedoutbecausetheearthgottoohotforthedinosaurstoliveonanymore.4.Dinosaursdiedoutquicklyabout65millionyearsagoandmanyanimalshavediedoutinthesameway.FTthinkNewWords_____________vt.&vt.咬；叮；刺痛2.___________n.灭绝；消亡3.___________n.恐龙4.________________形成；产生5.___________n.县；郡6.___________

vt.检查；视察7.___________adj.没料到的；意外的bite-bit-bittenextinctiondinosaurcomeintobeingcountyinspectunexpected8.___________n.事件；事变9.___________n.灰尘；尘土；尘埃10._______________按照；根据……所说11._____________n.消失12.__________adj.凶猛的；猛烈的13._______________以致于；结果14.__________n.结局；结尾15.__________adv.忠诚地；忠实地incidentdustaccordingtodisappearancefiercesothatendingfaithfullyLanguagePoints1.Theylivedontheearthtensofmillionsofyearsago,longbeforehumanscameintobeingandtheirfutureseemedsecureatthattime.千百万年前，早在人类产生之前，它们就生活在地球上，那时它们的未来看上去似乎很稳定。a.ontheearth

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。b.comeintobeing形成；产生c.longbefore早在……之前很久before作连词连接时间状语从句,译为“在……之前”。Itwillbelongbeforehegetswellagain.Ittooklongbeforehecametohelpme.Itdidn’ttakelongbeforethefirewasputout.得过很久他才能恢复。过了很久他才来帮我。不久就把火扑灭了。ImadefriendswithhimatlastChristmasparty,butIhadmethimseveraltimeslongbeforethat.我去年圣诞节晚会和他成为朋友，但早在那以前我就见过他几次。Thenewsdidn’tsurpriseme;Ihadknownthefactorywouldclosedownlongbefore.这消息对我来说一点也不意外，我很久以前就知道工厂将要倒闭。longbefore表示“早在……之前”；也可以表示“很久以前”Itwillbe+longbefore…很久以后才……Itwon’tbelongbefore…不久以后才……Itwillbelongbeforehegetswellagain.不久之后我们就能再见面的。注意：before引导的时间状语从句要用一般现在时表示将来的含义。得过很久他才能恢复。Itwon’tbelongbeforewemeetagain.拓展：beforelong不久以后It___longbeforewe___theresultoftheexperiment.A.willnotbe;willknowB.is;willknowC.willnotbe;knowD.is;know2.Whenscientistsinspectedthebones,theyweresurprisedtofindthatthesedinosaurscouldnotonlyrunliketheothersbutalsoclimbtrees.科学家们观察它们的骨骼时，惊奇地发现它们不仅跟其他的恐龙一样可以跑，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.Theylearnedthisfrom

theway(theboneswerejoinedtogether).他们通过研究（恐龙化石）骨骼的连接方式得出这个结论。a.learn…from…从……了解到……;向……学习……b.theway后接_________，且在定语从句中充当_________时，常用关系词_____,_______或_____。定语从句方式状语thatwhich省略4.Somescientiststhinkitcameafteranunexpectedincidentwhenahugerockfromspacehittheearthandputtoomuchdustintotheair.[点拨]

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。5.AccordingtoaUNreport,…accordingto根据,据……说

AccordingtoJohn,thebankclosesat4p.m.Eachmanwillbepaidaccordingtohisability.dodo渡渡鸟Listening

DoDo鸟是一种不会飞的鸟，仅产于毛里求斯肥。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鸟便得越来越少。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。Ex3Choosethesentencewhichgivesthemainideaofthestory.Saywhatiswrongwiththeotherthree.Number2iscorrect.Number1iswrong.Itisnotfairtoblamethedodoforhisdisappearance.Number3onlyexplainhalfthestory.Thedodoandmandidbecomefriendsbutonlybecausemanwantedtokillallthedodosaseasilyaspossible.Number4iswrongbecausetheotheranimalsandbirdsdidnotdomuchtosavethedodo.Theywarnedhimbutdidnothelphim.Listentothetapeandchoosethecorrectanswertocompleteeachsentence.1.Thedodois_____.A.fierceB.unkindC.friendlyD.foolish2.HewantstobelievethatManistellingthetruthbecause_____.A.ManisfriendlyB.hethinksManisfriendlyC.hethinksthebearsandmonkeyslieD.Manishisbestfriend3.Hedidn’trealizewhohadkilledmanyofhisfriendsuntil_____.A.MantoldhimthetruthB.theotherbirdstoldhimC.hesawhowhisfriendwasbeingkilledbyManD.themonkeystoldhimfierceadj.

凶猛的,好斗的Thehouseisguardedbyafiercedog.

激烈的,猛烈的Thecompetitionforjibsisfierce.SpeakingInpairschooseanotherendangeredanimalwhichyouknowabout.Analysewhythisanimalisendangered.IntentionPurposeI’mgoingtotohelp/saveIintend/mean/plantotoprotect…from…Iwillsothat…I’drathernot…I’dliketoI’mreadytoIfeellike…inorderto…butdo…toteachthemalesson.topunishthosewhodoharmtowildlife.Writing

WritealettertoWWFbasedonwhatyouhavediscussed,askingthemtohelpyousaveyourendangeredanimal.DearWWF,Myfriend,ChenTing,andIhavebeendoingsomeresearchonendangeredanimals.WefoundthatthehabitatofpolarbearsisdisappearingbecausetheiceattheNorthPoleisgettingwarmer.Iworrythatwhenisdisappearsaltogether,therewillbenowhereforthepolarbearstolive.SampleletterFirst,Isuggestweareverycarefulwiththeenergyweuse.Globalwarminghappensbecauseweareputtingtoomuchcarbondioxideintotheair.