to-do和doing做主语的区别.ppt

todo和doing作主语的区别,1.Noispermittedhere(smoke).Itisnotverygoodforyousomuch(smoke).2.moreisnecessary(read).Itisquitenecessaryitagain(read).3.alanguageinonemonthisimpossible.(learn),一般来说，表示比较抽象的行为动作时多用doing；表示比较具体的某次行为动作时多用不定式todo。,1.(climb)mountainsisinteresting1(drive)acarduringtherushhourmustbetiring2._computersismyjob.A.TosellB.SellC.SellingD.Sold3.(teach)Englishismyjob.1(teach)youEnglishthistermismyjob.,doing作主语时，通常用以表示一件已知的事或经验。todo通常用来表示一件未完成的事或目的。doing作主语时强调的是做那件事的持续状态，todo作主语时主要表示现在或者将来的事情,1.学一门外语非常重要。2.覆水难收。3.放弃这一机会是个遗憾。4.撒谎没好处。5.与其诅咒黑暗，不如燃起蜡烛。,Itisveryimportanttolearnaforeignlanguage.Itisuselesscryingoverthespiltmilk.Itseemedapitytogiveupthechance.Itisnogoodtellinglies.Itwouldbebettertolightupcandlethantocursethedarkness.,It+be+形容词/名词词组+todosth./doing/that.不定式todo作主语时，常使用形式主语结构；而doing作主语时，较少用形式主语结构，只有在Itis+nouse,nogood(fun,agreatpleasure,awasteoftime.)等名词+doingsth.Itis+useless(senseless,nice,worth等形容词)+doingsth,Itishardtomakehimchangehimmind.Itisnogoodobjecting.Itisuselessspeaking.Itisnotaneasythingtomasteralanguage.ItisagreatfunplayingfootballHowwoulditbetostarttomorrow?ItisawasteoftimetryingtoexplainIttookallhisstrengthtomoveoutofthecrowds.ItisniceseeingyouagainBusinessisbusinessanditwillnotdotobesocareless.Itisnogoodpretendingtoknowwhatyoudontknow.Itisworthlearninganotherlanguage.,逻辑主语fortheyoung,thechildren,Itisuselesscryingoverthespiltmilk.Itseemedapitytogiveupthechance.Itisnogoodtellinglies.,Itsverykindtohelpmewiththework.Itseemedselfishnottosharehisdictionarywithothers.,It+be+形容词+（forsb.）+动词不定式这类句型常用形容词easy,difficult,hard,important,possible，wise等作表语，为了强调不定式的逻辑主语，常在不定式前加forsb，译为“对某人来说做某事怎么样”,It+be+形容词+ofsb.+动词不定式这类形容词常是表示心理品质,性格特征的形容词，如：kind,nicestupid,clever,foolish,polite,impolite,silly,selfish,considerate等。某人和这些形容词可以构成主系表结构。,如：Itsverykindofyoutohelpmewiththework.=Youarekindtohelpme.Itseemedselfishofhimnottosharehisdictionarywithothers.=Heseemedselfishnottosharehisdictionarywithothers.,1.我花了一些时间才读完那段阅读材料。2.至少要九个钟头才能到那儿。3.跟着理智走，要有勇气，跟着感觉走，要有倾其所有的决心。,Ittookmesometimetoreadthereadingmaterials.Ittakesatleastninehourstogetthere.Ittakescouragetofollowyourmind.Butittakeseverythingtofollowyourheart.,Ittookmesometimetoreadthereadingmaterials.Ittakesatleastninehourstogetthere.Ittakescouragetofollowyourmind.Butittakeseverythingtofollowyourheart.,It+takes+(sb.)+sometime+todosth.表示“（某人）花多少时间干某事”的句型，其中it是形式主语，代替后面的不定式（todosth.），句型中的sb.也可以省略。,在thereisno.句型中的主语只能用doing，并且不能带逻辑主语。如：Thereisnodenyingthefact.Well,youhavesaiditandthereisnotakingitback.上述句子的意思如用不定式todo则分别为：Itisimpossibletodenythefact.Well,youhavesaiditanditisimpossibleforyoutotakeitback.,1._wellinaninterviewisanimportantpartofgettingaplaceatuniversity.ATodoBDoingCDoneDBeingdone,2.Itismyhonor_heretospendsometimewithyou.AtobeinvitedBinvitingCbeinginvitedDtoinviteBA,3.Isnecessarytotakeoffourshoeswhenweenterthelab?A.everyoneB.thisC.h