70新概念第二册 lesson43

Lesson43OvertheSouthPole【Newwordsandexpressions】★polen.（地球的）极SouthPole南极NorthPole北极★explorern.探险家explorev.探险★liev.处于tellalie撒谎lie,lied,lied撒谎lien.谎言;liev.撒谎Eg.:Youlied.You,liar!lie/lai/,lay/lei/,lain/lein/处于,位于stayinbed/lieinbed介词短语lie现在分词--lying★seemv.似乎，看起来seem+asif看起来似乎……他看起来似乎以前从来没有在英国居住过。HeseemsasifhehadneverlivedinEnglandbefore.seem+adj.他看起来很有钱。Heseemsrich.seemtobeHeseemstoberich.seemthat…看起来似乎……Itseemsthatheisrich.★clearv.越过(凌空、不接触地)越过,跳过，没有接触面的飞跃飞跃山峰clearthemountain那匹马越过了栅栏Thehorseclearedthefence.★pointn.地点point点,一般指从飞机上向下看的点地点placeatonepoint在某一地方★crashv.坠毁crash(从上向下掉)aircrash空难★plainn.平原mountains高山plaingirl平凡的女孩Eg.:I'maplaingirl.课文讲解1、forthefirsttime第一次time表示“次，回”，还可以说thistime，lasttime，nexttime，forthelasttime我最后一次提醒你，如果你不快点，你就会赶不上火车的。Iremindyouforthelasttimethatifyoudon’thurry,you’llmissthetrain.下次你见到他的时候，把这些照片给他。Givehimthesephotosnexttimeyouseehim.这句话包含两个同位语。threeyearsafter…为1929的同位语，作插入性的补充说明；R．E．Byrd作theAmericanexplorer的同位语。2、连词though引导让步状语从句，其含义是“虽然……，尽管……”。它永远不与but连用。takeaphotographof…拍……的照片在他离开家之前，他给他的房子照了张照片。Hetookaphotographofhishousebeforehelefthome.runintotrouble=getintotrouble遇到麻烦，陷入困境每次他遇到困难了，他都向父母寻求帮助。Eachtimeheranintotrouble,heaskedhisparentsforhelp.3、atonepoint在某一地方，在某一时刻（point也指时间上的某一点）他曾一度下决心要当个画家。Atonepoint,hemadeuphismindtobecomeapainter.it为先行主语，真正的主语为that引导的从句。it作先行主语时经常与seem，appear，look等连用：现在似乎可以肯定会议将被推迟。Itnowlookscertainthatthemeetingisgoingtobeputoff.4、riseto…上升至……5、by表示“相差，以……之差”的意思我晚了10分钟，没赶上火车。Imissedthetrainbytenminutes.他比我小两岁。Heisyoungerthanmebytwoyears.6、for表示“因为”。insight表示“在看得见的范围内”、“在可看见之处”：Nomanwasinsight.一个人也看不见。Can和beableto的区别7、can与beableto用法上的区别1）当它们表示能力的时候，是同义的。Hecanspeaktwoforeignlanguages.Heisabletospeaktwoforeignlanguages.2）表示过去通过努力终于做成了某事要用beableto，而不能用can。Iwasabletoswimtothebankaftertheboatturnedover.3）can泛指一般的能力,只有两种形式:can,could．beableto则主要指具体做到了某件事的能力，其形式主要是靠be发生变化Icanswim.Iamabletoswim.Allthepeoplewereabletoescapefromthefireintime.4）can能表猜测，beableto不能。can的这种用法主要用于疑问句和否定句。Somebodyisknockingatthedoor.Whocanitbe?Itcan’tbeourteacherwhoisknockingatthedoor.其肯定形式是mustbe。如:Itmustbeourteacherwhoisknockingatthedoor.5）beableto后边接动词不定式表示一种实际情况时，其否定形式不是benotableto，而是cannot。Wereyouabletocatchthefirstbusyesterdaymorning?No,Icouldn’t.Exercise1.Tomisn’tatschooltoday,becausehewas___yesterday.A.inthehospitalB.inhospitalC.inahospitalD.athospital2.He____playthepianonow,buthe___playthepianotwoyearsago.A.could;canB.can;couldn’tC.can;couldD.can;can’t3.IboughtadollforMary___abirthdaypresent.A.asB.atC.toD.with4.Timcan’tplay__piano,buthecanplay___tennis.A./;theB.the;/C./;/D.the;the5.—Canyouskate?—___,Ican.A.OfcourseB.SorryC.NoD./Janecan’tuseacomputer.No,Ican’t.Idon’tthinkhecanplaythesoccer.Whencouldsheswim?句型转换1.Janecanuseacomputer.(改为否定句)2.Canyoudraw.(作否定回答)3.Ithinkhecanplaythesoccer.(变否定句)4.Shecouldswimwhenshewasfive.(提问)lie与lay的区别：（1）lie作“躺，卧、处于（位置）”解时，过去式为：lay,过去分词为：lain；lieinbed躺在床上（2）lie作“撒谎”解时，过去式为：lied,过去分词为：lied；（3）lay可作“放，摆，搁；产卵”解，其过去式和过去分词均为：laidlayanegg下一个蛋laysth.放,放置【例】Thebooksstill_____whereI_____themamonthago.A:lie,laidB:lay,laidC:lied,lainDlain,lied此题选B。这句话的意思是：上个月前我“放”在那的书现在还“躺”在那里。