it的用法总结:用法英语中it的用法总结it的用法总结高中it的用法总结小学篇一:it的用法归纳?Neverbeafraidofgrammar?Collectsomeexamples;?Watchthemverycarefully;?Findoutsomethingincommon;?Trytousetherules----practise.it用法完全归纳一、it作人称代词的用法1.指事物作为人称代词,it可以除人以外的一切事物或动物。如:Idroppedmywatchanditbroke.我把手表掉在地上摔坏了。It’shardwork,butIenjoyit.工作很辛苦,可是我乐意干。“Whereisthedog?”“It’sinthebedroom.”“狗在哪?”“在卧室里”。2.指人it指人主要用于指不性别不明的婴儿或用于确认某人的身份。如:Isitaboyoragirl?是男孩还是女孩?Thereisaknockonthedoor.Itmustbethepostman.有人在敲门,一定是邮递员。【说明】在答语中,常用来指本人,如说It’sme。3.代替某些代词代词it还可用于代替指示代词this,that以及复合不定代词something,anything,nothing等。如:“What’sthis?”“It’sanewmachine.”“这是什么?”“是一种新机器”。Nothingiswrong,isit?没出什么问题,是吗?二、it作非人称代词的用法1.基本用法it作非人称代词的用法,主要用于指时间、距离、价值、天气、气候及温度等自然现象。如:It’stoolatetogotherenow.现在去那儿已经太迟了。Itrainedalldayyesterday.昨天下了一天的雨。Itcangetveryhothere.这里有时会很热。2.用于某些句型It’stimeforsth.该做某事了。It’stimetodosth.该做某事的时候了。It’stimeforsbtodosth.某人该干某事了。It’s(about/high)time+that-从句.某人该做某事了。(从句谓语用过去式,有时也用“should+动词原形”)It’sfirst(second)time+that-从句.某人第几次干某事。(从句谓语用现在完成时)It’s+时间段+since-从句.自从„„有一段时间了。It’s+时间段+before-从句.过多长的时间才„„三、it用作形式主语1.基本用法当不定式、动名词、从句等复杂成分用作句子主语时,为保持句子平衡,通常把真正的主语放在句末,而在句首使用形式主语it。如:It’sveryimportanttorememberthis.记住这一点很重要。It’shardworkclimbingmountains.爬山是费劲的事。It’sunknownwhenhewillcome.他什么时候来还不知道。2.用作形式主语的的重要句型(1)It+be+adj.for(of)sbtodosth某人做某事„„Itishardforhimtomakeuphismind.他很难下定决心。Itwasfoolishofhertosaysuchathing.她说那样的话,真是太蠢了。【说明】介词of与for的区别是:of用于指某人的性格、属性、特征等,介词for表示对象,意为“对„„来说”(from)。(2)Ittakessb+时间段+todosth.某人做某事花了„„时间Ittakesyearstomasteranewlanguage.要花多年的时间才能掌握一门新的语言。【说明】此句型可以有以下多变种变体:Ittookmeanhourtowritetheletter.=Thelettertookmeanhour(towrite).=Itookanhourtowritetheletter.我写这封信花了一个小时。(3)Itisuptosbtodosth.该由某人做某事It’suptoyoutotomakethechoice.得由你来作选择。(4)itlook(seem,appear,happen,occur)that[asif]?似乎„„Itseemedasthoughhedidn’trecognizeme.他似乎没认出我来。IthappenedthatIwasoutwhenhecalled.他打电话时我碰巧不在家。(5)Ifitwerenotfor?/Ifithadn’tbeenfor?若不是因为„„Ifitwerenotfortheirhelp,wecouldn’thavegotoverthedifficulties.要不是他们帮助,这些困难我们不克服不了的。四、it用作形式宾语1.基本用法当不定式、动名词、从句等复杂成分用作宾语且其后跟有宾语补足语时,通常会在宾语补足语前使用形式宾语,而将真正的宾语移至句末。其基本结构为“动词+it+宾语补足语+不定式(动名词或从句)”。如:Ifinditdifficulttodothejobwell.我发现做好这件事不容易。Ithinkitbestthatyoushouldstayhere.我认为你最好住这儿。Wethinkitnousecomplaining.我们认为抱怨是没有用的。2.用作形式宾语的几个特殊结构(1)动词+it+that-从句。如:Ilikeitthatyoucame.你来了,我很高兴。Itakeit(that)hewillcomeontime.我认为他会准时来的。Youcanputitthatitwasarrangedbefore.你可以说这是以前安排的。Rumorhasitthatthedefenceministerwillsoonresign.据传闻,国防部长不久就要辞职。【说明】能用于此结构的动词不多,常见的有have,take,put,like等。(2)动词+it+when(if)-从句。如:Idislikeitwhenyouwhistle.我不爱听你吹口哨。(from)篇二:It作形式宾语用法总结It做形式宾语用法总结当不定式(短语)、动名词(短语)或从句在某个句子中作宾语时,为保持句子结构平衡,避免句式结构的混乱,常用it作形式宾语,而将真正的宾语放在句尾,构成“动词,it,宾语补足语,不定式(动名词或从句)”结构,也可称作“6123结构”。此时it仍只起先行引导作用,本身无词义。它可以代替三种形式:不定式、动名词和宾语从句。it作形式宾语时,需具备两个条件:??足语,具备了这两个条件,形式宾语it一定要用。?it代替不定式短语think/find/feel/consider/make/regard„+it+形容词/名词+不定式短语如:?Ifinditpleasanttoworkwithhim.(it作形式宾语,代替不定式短语toworkwithhim)?Theyfeltitdifficulttofinishtheworkinsuchashorttime.(it作形式宾语,代替不定式短语tofinishtheworkinsuchashorttime)?Shethinksitherdutytohelpus.(it作形式宾语,代替不定式短语tohelpus)?Ithinkitmyhonortobeinvitedtospeakhere.(it作形式宾语,代替不定式短语tobeinvitedtospeakhere)?Tomdidn’tfinditdifficulttowritelettersinChinese.(it作形式宾语,代替不定式短语towritelettersinChinese)?Allthesenoisesmadeitimpossibleformetogoonwiththework.(it作形式宾语,代替不定式短语togoonwiththework)?it代替动名词短语(这只限于少数句型,在多数情况下用不定式时更多一些)如:?Theprofessorconsidersitnogoodreadingwithoutunderstanding.?Doyouconsideritanygoodtryingagain??Hefoundituseless(nouse)arguingwithhim.?Hethoughtitabsolutelysenselessattemptingtheimpossible.?Idon’tthinkitworthwhilegoingtosuchaplace.?it代替宾语从句:如:?Weallthoughtitapitythattheconferenceshouldhavebeencancelled.?Itookitforgrantedthattheywerenotcoming.?I’llseetoitthateverythingisreadyintime.“it”的特殊用法常出现在以下几种结构中。A.动词,it,when/if从句。常见于appreciate,enjoy,like,dislike,love,hate,prefer等少数动词之后。Wewouldmuchappreciateitifyoucoulddousthatfavour.I'dpreferitifIdidn'thavetofinishthework.B.动词+it+that从句。常见于like,take,have,put等少数动词之后(it相当于that从句的同位语)。Itakeitthattheywillsucceedsoonerorlater.ThenewspapershaveitthatsomeJapanesefirmshavegonebankrupt.RumorhasitthatMaryisgettingmarried.Itakeitthatyouhavebeenout.Letmecomeandstay.Youcanputitthatitwasarrangedbefore.C.动词+it+介词短语+that从句。常见于bringittoone'sattention;oweittosb;takeitforgranted等结构中。IoweittoyouthatIfinishedmyworkintime.Don'ttakeitforgrantedthattheywillsupportyou.D.动词+介词(短语)+it+that从句。常见于answerfor,dependon,relyon,insiston,lookto,seeto,stickto等结构中。I'llseetoitthateverythingisreadyintime.YoumaydependonitthatTomwillhelpyouwithyourEnglish.I’mcountingonitthatyouwillcome.E.动词+it+过去分词+从句。常见于几个可以带过去分词作宾语补足语的动词之后。Ihearditsaidthatthatfactorywasfoundedin1995.Theyhaven'tmadeitknownwherethemeetingistotakeplace.易混用其他句型英语中有一些句型不含it,但却易被误用了it,常见的有以下句型:?Thereissomething/nothingwrong/thematterwithsb./sth.如:Thereisnothingwrong/thematterwithhim.He’sjustpretending.他没什么事,他只是在装呢。?Thereisnodoubtabout„对„毫不怀疑Thereisnodoubtthat„对„毫不怀疑如:?Thereisnodoubtabouthissuitabilityforthejob.毫无疑问,他适合这个工作。?Thereisnodoubtaboutthefact.关于这个事实毫无怀疑。?Thereisno