语法专题十：it的用法1.指代事物、动物、婴儿或未知的人。2.指天气、时间、距离、自然现象、环境等。3.代替不定式，作形式主语或形式宾语(常与feel,consider,find,believe,make,take,imagine,think,suppose,regard等连用)。4.代替动名词，作形式主语或形式宾语：Itisnogood/nouse/useless/dangerous+doingIthinkitnogood/nouse/useless/dangerous+doingIthinkitnousecomplainingabouttheirprejudice.5.代替主语从句、宾语从句，作形式主语或形式宾语：Itseems/appears/happens/turnsout/proves+that…Itiscertain/likely/possible/probable+that…Wehavemadeitclearthatshehasnothingtodowiththecase.6.用于强调句：Itis/was…that/who…Astudentwitnessedthecaraccidentattheturninglastnight.(1)(2)(3)(4)(1)_________________________________________________________.(2)_________________________________________________________.(3)_________________________________________________________.(4)_________________________________________________________.Itisnotuntil+被强调的部分+that…Ididn’trealizeshewasafamousfilmstaruntilshetookoffherdarkglasses.________________________________________________________________.7.其他重要句型：Itisimportant(necessary,right,strange,natural)that…（should+动词原形）Itissaid(reported,learned…)that…Itissuggested(ordered…)that…（should）+动词原形Itisapity(asham)that…（should）+动词原形Ithappens(seems,looks,appears)that...Itoccurstosb.todo/that…：使某人想起……Itis/hasbeen+一段时间+since...+过去时Itwillbe+一段时间+before...Itlooks(seems)asif…Itisnowonder…：难怪Whenitcomesto…：当谈到……Itcomesaboutthat…：发生8.appreciate,love,like,hate,seeto(负责，注意)+it+从句巩固练习：1.Ittookusoveranhour______alongthestreet.A.walkB.towalkC.walkingD.walked2.Ithinkitagreathonour______tovisityourcountry.A.toinviteB.invitingC.havinginvitedD.tobeinvited3.Manypeoplenowmake______aruletobuycardsfortheirfriendsbeforeChristmas.A.themselvesB.itC.thatD.this4.______isverycleartoeveryonethathe'sroundandtalllikeatree.A.ThisB.WhatC.ThatD.It15.---Itisrainingcatsanddogs.---______.A.SoitisB.SoisitC.NeitheritisD.Neitherisit6.It'snouse______overspiltmilk.A.cryB.cryingC.thatyoucryD.foryoutocry7.Itisimportant______theiroffer.A.rejectB.rejectsC.torejectD.rejecting8.Has______beendecidedwhenwearetoholdthesports-meeting?A.thatB.thisC.itD.what9.---DidLiLeicallmewhileIwasout?---Yes,itwas______thatcalledyou.A.himB.heC.whoD.whom10.Idon'tknow______makesherafraidofhavingherbusinessdiscussed.A.whatitisaboutMarythatB.thatisitabutMarywhatC.whatisitaboutMarythatD.thatisaboutMarywhat11.Itwaswithgreatjoy______hereceivedthenewsthathislonglostsonwouldreturnhome.A.asB.thatC.soD.for12.Idon'tthink______difficultforastudenttomasteraforeignlanguagewithinfiveyears.A.thatB.itC.tooD.very13.It'sthesecondtimeyou______latethisweek.A.arriveB.arrivedC.havearrivedD.hadarrived14.Itwillnotbe______wemeetagain.A.longbeforeB.beforelongC.soonafterD.shortlyafter15.It'sdemandedthatwe______thereonfoot.A.nottogoB.don'tgoC.notgoD.won'tgo16.Itwasnotuntil1936______basketballbecamearegularpartoftheOlympicGames.A.thatB.whenC.whichD.then17.______youmettheEnglishman?A.WhereitwasthatB.WhoitwasthatC.WherewasitthatD.Wherewasthat18.______certainthathisinventionwillleadtothedevelopmentofproduction.A.That'sB.ThisisC.It'sD.What's19.Tom'smotherkepttellinghimthatheshouldworkharder,but______didn'thelp.A.heB.whichC.sheD.it20.Itisimportantthatshe______withMr.Williamsimmediately.A.speakB.spokeC.willspeakD.tospeak21.______thatthere’sanothergoodharvestthisyear.A.ItsaysB.ItissaidC.ItwassaidD.Hewassaid22.Ireallyappreciate______ifyoucanlendyourcomputer.A.thatB.whatC.itD.which23.Ididn’t______her______forhelp.A.occur;toaskB.occurto;toaskC.occurto;askingD.happento;thattoask2
