高三英语复习专题It的用法高三英语课件

2007届英语复习专题It的用法it是常见代词之一，它既可以指代时间、地点、天气、距离等，还能作形式主语或形式宾语，同时可以引起强调结构，是历年高考热点之一。现结合高考试题对其用法作一介绍。一、用来表示时间、天气、地点、距离、环境、形势等。例如：Itistwomilestothebeach.(Oxford)这里到海滨有两英里。Itwasraininginthemorning.(Oxford)今天早晨下着雨。Ifit’sconvenientIcanseeyoutomorrow.(Oxford)如果方便，我明天能见你。it表示时间常用于句型：1、Itis/hasbeen＋一段时间＋since从句。意为“自……以来已有多长时间了”或“自不……以来已有多长时间了”。例如：1）Itis/hasbeenmanyyearssinceIwaslastinLondon(P.136SEFCBook2B)自从我上次到伦敦，已经有许多年了。2）It’salongtimesincewemetlast.(P.89JEFCBook3)自从我们上次见面以来已经有很长一段时间了。2、Itis/was/willbe+一段时间+before从句。表示“在（做某事）前过了多长时间”，或“过了多长时间才……”。如：Butit________morethan100yearsbeforethecountrybeginsonceagaintolookasitdidbefore.但是在100年之后，这个国家才能恢复到以前的样子。willbe二、用来指代人。说明某人的身份或者做某事的人；指代婴儿或儿童；在不清楚某人性别时，也可使用it，尤其在问答的形式中更为常见。例如：1.---Look,someoneiscoming.Whocanitbe?---Itmaybetheheadmaster.---Itcan’tbehim.HehasgonetoShanghai.---ItmustbeMr.Zhang.Helooksliketheheadmaster.2.____DoctorStone,isn’tit?She’susuallygood.A.ThatisB.ItisC.ThisisD.Sheis3.----IsthatDoctorStone?----Yeah.----Whois___?A.thisB.thatC.sheD.it三、用来指代前文中的内容，或指代整个主句。如：1.Takeyourpoundofflesh!Ideclarethecourtallowsitandthelawgivesittoyou.(P.63SEFCBook3A)割下你要的那一磅肉吧！我宣布法庭允许你这么做，法律把那一磅肉判给你了。2.Ifitispossible,hodupthepartofthebodywhichisbleeding.(P.44SEFCBook2A)如果可能的话，就把出血的部位抬起来。3.Iwasdisappointedwiththefilm，Ihadexpected_______tobemuchbetter．A．thatB．thisC．oneD．it4.Tom'smotherkepttellinghimthatheshouldworkharder,___didn'thelp.A.heB.whichC.sheD.butit5.ItissaidthatinAustraliathereismorelandthanthegovernmentknows___.A.itwhattodowithB.howtodealwithitC.whattodowithitD.todowhatwith6.TheParkersboughtanewhouse,___willneedalotofworkbeforetheycanmovein.A．butthatB．butitC．oneD．which7.Iloveswimming,____keepsmefit.A.anditB.whichC.itD.as8.Theysaidtheyhadfinishedthework,but___.A.Ican’tbelieveitB.whatIcan’tbelieveC.whichIcan’tbelieveD.Idon’tbelieve四、在一些相对固定的词组中出现，没有特殊含义，经常不翻译。如：1.He’sneverreallymadeitasanactor.(Oxford)作为演员，他从未获得过真正的成功。2.Itismyturn．轮到我了。3.That’sjustit---Ican’tworkwhenyou’remakingsomuchnoise.(Oxford)原因就在这儿---你们这么吵，我没法工作。4.____.I’vegotsomuchworkIdon’tknowwheretostart.A.Whatanawful!B.It’sawful!C.Thatwasawful!D.Asisawful,5.___withyou?___Verywell,thankyou.A.WhatisgoingonB.HowisitgoingC.HowiseverythinggoingD.Whatisup五、指代不定式、动名词、从句等，用作形式主语或形式宾语。如：1.___alwaysdifficulttobeinaforeigncountry,especiallyifyoudon’tspeakthelanguage.A.ThatisalwaysB.ItisalwaysC.ItwillbealwaysD.Thatwillalwaysbe2.Wemustmake___tothepublicthatsomethingshouldbedonetostoppollution.A.WhatisclearB.itisclearC.ItclearD.thatclear3.Ihate__whenpeopletalkwiththeirmouthsfull.A.itB.thatC.theseD.them4.___onedaytheywillhaveenoughanimalstosetthemfree.A.ItishopedforB.whatishopedthatC.AsishopedthatD.Itishopedthat5.____insidehisheartwasbeatingwildlywithfear.A.ItappearedcalmbutB.Heappearedcalm,butC.WhatappearedcalmwasD.Itwasappearedcalm,but用it作形式主语或形式宾语的句型主要有:It+be+adj./n.(forsb./ofsb)+todosth.It+be+fun/awasteoftime/nogood/nousedoingsth.It＋be＋过去分词＋that从句It＋be＋形容词＋that从句5、It＋be＋名词（词组）＋that从句1.Isitpossiblenecessarytotellhisfathereverything?2.Infactitisahardjobforthepolicetokeeporderinanimportantfootballmatch.3.Idon’tthinkitpossibletomasteraforeignlanguagewithoutmuchmemorywork.4.Howsillyofyouitistohavedoneit!It+be+adj./n.(forsb./ofsb)+todosth.注意：该句型中的形容词通常是表示事物的特点或特征的如difficult，hard，easy，impossible，necessary，important等，此时用for；表示人的性格特征或特点的如nice，good，bad，kind，silly，foolish，wise，clever，careless，rude，brave，cruel，careful，grateful等，这时要用of。It+be+fun/awasteoftime/nogood/nousedoingsth.1.___tojumpintoariveronahotsummerday!A.HowfunitisB.WhatfunitisC.WhatfunofitisD.WhatafunitisItisnousecryingoverspiltmilk.[谚]牛奶已泼，哭也无用。It＋be＋过去分词＋that从句Itissaid,reported,announced,hoped,thought，told，believed，expected，decided，suggested,known+that从句该句型通常可以转换成sb/sthissaidthat…如：Itissaidthatthebookwastranslatedintomanylanguagesin1950.Thebookissaidtohavebeentranslatedintomanylanguagesin1950.It＋be＋形容词＋that从句可用于此句型的形容词还有wonderful，true，good，right，wrong，important，useless，surprising，clear，unusual，lucky，certain等。如：1）Itisquitecertainthathewillnotmakeaspeechatthemeeting.2）Itisimportantthatwe(should)studyhard.5、It＋be＋名词（词组）＋that从句。适用该句型的名词（词组）还有apity，anhonor，agoodthing，afact，asurprise，goodnews等。如：1）Itisapity(that)youmissedthesportsmeetinglastweek.2）___isafactthatEnglishisbeingacceptedasaninternationallanguage.A.ThereB.ThisC.ThatD.It6、It＋seem／appear／happen的适当形式＋that从句。该句型常可以转换成含不定式的简单句。如：1）Itseemsthatthereisabigwastepipecomingdownfromthetown.(P.31SEFCBook3A)→Thereseemstobeabigwastepipecomingdownfromthetown.2）Heappearedcalm,butinsidehisheartwasbeatingwildlywithfear.(P.56SEFCBook3A)→Itappearedthathewascalm,butinsidehisheartwasbeatingwildlywithfear.7、Itdoesn‘tmatter（It’snowonder；Itdoesn‘tmaketoomuchdifference等）＋when/where/which/whether等从句。如：1）Does___matterifhecan'tfinishthejobontime?A.thisB.thatC.heD.it2）Theyareallclassmates．___isnowonder___theyshouldhelpeachotherwiththeirstudies．（上海98）A．This；whetherB．It；ifC．That；thatD．It；that8、S.+v.it+adj./n./+不定式或从句。常用于这一句型的动词有find,consider,feel,make,think等。如：1）…hefounditimportanttostudythesituationinRussia.2）Iwanttomakeitclearwhethersheisstillat