高考英语语法专题精讲精练-it的用法 3页

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.It took us over an hour ______ along the street.　A.walkB.to walkC.walkingD.walked 2.I think it a great honour ______to visit your country.　A.to inviteB.invitingC.having invitedD.to be invited 3.Many people now make ____ __a rule to buy cards for their friends before Christmas.　A.themselvesB.itC.thatD.this 4.　______is very clear to everyone that he"s round and tall like a tree.　 A.This B.WhatC.ThatD.It 5.---It is raining cats and dogs.---______ .　A.So it isB.So is itC.Neither it isD.Neither is it 6.It"s no use ______over spilt milk.　A.cryB.cryingC.that you cryD.for you to cry  7.It is important ______ their offer.　A.rejectB.rejectsC.to rejectD.rejecting 8.Has ______been decided when we are to hold the sports-meeting?　A.thatB.thisC.itD.what 9.---Did Li Lei call me while I was out?　---Yes, it was ______ that called you.　A.himB.heC.who D.whom 10.I don"t know ______makes her afraid of having her business discussed.　A.what it is about Mary thatB.that is it abut Mary whatC.what is it about Mary thatD.that is about Mary what 11.It was withgreat joy ______he received the news that his long lost son would return home.　A.asB.thatC.soD.for　12.I don"t think ______difficult for a  student to master a foreign language within five years.　A.thatB.itC.tooD.very 13.It"s the second time you ______late this week.　A.arriveB.arrivedC.have arrivedD.had arrived 14.It will not be______we meet again.　A.long beforeB.before longC.soon afterD.shortly after 15.It"s demanded that we ______there on foot.　A.not to goB.don"t goC.not goD.won"t go 16.It was not until 1936 ______basketball became a regular part of the Olympic Games.　A.thatB.whenC.whichD.then 17.______you met the Englishman?　A.Where it was that　 B.Who it was thatC.Where was it that　　 D.Where was that 18.______certain that his invention will lead to the development of production.　A.That"sB.This isC.It"sD.What"s 19.Tom"smotherkepttellinghimthatheshouldworkharder,but______didn"thelp.A.heB.whichC.sheD.it20.It is important that she ______with Mr. Williams immediately.　A.speakB.spokeC.will speakD.to speak 21.______that there’s another good harvest this year.　A.It saysB.It is saidC.It was saidD.He was said 22.Ireallyappreciate______ifyoucanlendyourcomputer.A.thatB.whatC.itD.which23.Ididn’t______her______forhelp.A.occur;toaskB.occurto;toaskC.occurto;askingD.happento;thattoask