It-的用法总结.docx

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1、It的用法总结一.代词：1)指代上文2)指代this/that3)指代未知性别的婴儿或孩子或身份不明的人4)指代时间/地点/天气Zfi度/距离/环境VVhatdoes“it”referto?.Itgetsdarkveryearlyinthewinter.2.Whatwillyoucallitifit,Saboy?1.1 lovespring-/,sawonderfultimeoftheyear.4 .slessthan100kilometresfromheretoJinan.5 .Whcnthefactorycloses,itwillmean500peoplelosingtheirjobs.6

2、 .What*sthis?Itsacat.7.Ithassnowedmuchthisyear.留意:it,one和that,those作替代词的区分(I)Thcbookinyourbagisveryinteresting.CanIborrow?(2) Thebookinyourbagismoreinterestingthanonthedesk.(3) TheweatherIicrcismuchcolderthaninNanjing.(4) Thebooksarefree.Youcantakefreeofcharge.(5) Thebooksinthebagarcbetterthanonthed

3、esk.it表示特指，与前面指代的名词是同一个one表示泛指，指代单数可数名词，与指代的名词同类但不同一个that表示特指，相当于the+名词单数，与指代的名词同类但不同一个those表示特指,相当于the+复数可数名词，与指代的名词同类但不同一个t指时间的几个避遮【句式1】itis/hasbeen+段时间+since-自从-多久了 Itis/hasbeen3yearssinceIvisitedyourcompany.【句式2】Itwas+段时间+before一过了多久才一 Itwas3hoursbeforeherealizedthetruth.【句式3】ItWiHbe+段时间+before-

4、要过多久.一才一 Itwillbe3monthsbeforetheycompletethebridge.【句式4】itwas+点时间+when某事发生于一某一时刻一Itwas10o,clockwhenthebigfirebrokeout.【句式5】It/thisis/WaStIe+序数词+time+现在完成时态/过去完成时-(表示某人第几次做某事),ItisthesecondtimeIhaveheardofthis.【句式6】Itistime(abouttime/hightime)thatsb.did/shoulddo(该是干的时候了)Itistimethatwewenttoschool.对面

5、Il练1. Itwillbeyearswemeetagain.2. ItistenyearsIcametothistown.3. ItistenyearsagoIcametothistown.4. ItisthethirdtimeI(visit)tothistown.5. Itwas2am.Tangshanearthquaketookplace.A.whenB.thatC.beforeD.since二.引导词：1）形式主语2）形式宾语3）强调句炉S形式主语基本结构：It+hev.+,(forsbofsb.)todosth(动词不定式)1.doingsth.(动名词短语)that/whether

6、.(从句)SAit:FororOf?1. ItisinM)r(antustoIcarnEnglishwell.2. ItisverjkindyoutohelpmelearnEnglish.3. Itisfoolishyoutobelievehim.4. Itisnecessaryyoutogooverthislesson.M2;It何时代看doing?It+be+nousenogoaddoi”.“一awasteoftimea#1 .和他争舞没有用.2 .打电脑第戏是奢侈时间.V*3tthat后的从句要用虚按语气(should+动词原形)，should可以省(1) .Itisapity(asha

7、meZanhonor/a&oodthing/afact/asurprise/.)that(2) .Itisimportant(necesjarystrange*natura1.)that-(3.Itisinsistcdthat.Sft4：Heissaid/reportedtohavejcneabroad.=Itissaidrepr(edthathehasgoneabroad.Allthestudentsarcbelievedtohavedonetheirbest.=Itisbelievedthatallthestudentshavedonetheirbest.留意5：+巫（丕龙触陨+IlhDD

8、ensIhnthewasout.磁巧ItSCVimthuthedoesntknowthesecret.似乎Itappearsthatheishonest.似乎Itoccurredt。meIhatIlostmypurseonthebus.我臾然到Ildoesn、matterwhetherhewillcomeornot.没有关系It作形式宾语+（for/ofsb+）todo（动词不定式）doingsth（动名词短语）that从句（从句）基本结构：动词+it+形容词/名词0thinkbelievenecessarypossiblefindfeciconsidernatural,supposenous

9、e/nogood/makeawasteoftimekeepIthinkitimportanttomakeaSimlnlarVintime.IfinditagoihabitIhalWemakeaSUmmaIyintime.HcfeltitnoUSCICarninqEngliShWithoutSPCakinWit.it作形式宾语的特别句型：V.+it+Iflthatlwhen动词有喜爱类：enjoy,like,appreciate,prefer厌烦类：hate,dislikeIwouldappreciateitifyoupaidincash.IlikeitintheautumnWhenthewea

10、therisclearandbright.Ihateitwhenpeopletalkwiththeirmouthsfull.n引导强调何1 .基本结构：Itis/was+被强调部分+thatZwho（八）.例如：他是因为病了才没能帮我ItWaSbecausehewasillthathecouldn,thelpme.WaSitbecausehewasillthathecouldn,thelpme?Wh、WaSitthathecouldnthelpme?2 .notUntn句式的强调句型：Itis/wasnotuntil+that直至!才.”例如：Hedidn,tgethomeuntilitwasdark.三.用在固定结构中的ittakeiteasy.takeitforgrantedbelieveitornotmakeitforgetitworthitIt/Thatalldepends.whenitcomestogotit=Understand别惊慌认为理所应当信不信由你胜利；完成某事忘了吧；没关系有好处，值得做要看实际状况而定当谈到，但提到理解，明白