浙江省瓯海区三溪中学高考英语语法复习 it的用法课件 新人教版.ppt

,theuseof“it”(i),1.itsasmallworldafterall.,3.itsafineday,isntit?,2.abirdlandedonthetree.itssinging.,4.whattimeisit?itssevenoclock.,5.thebabyiscrying.itmightbehungry.,this/that,i.人称代词a.用作人称代词，代替前文提到过的事物，以避免重复:b.也可以指动物或婴儿(未知性别的婴儿或孩子):2.非人称代词有时并不指具体的东西，可指天气、时间、距离、环境等itwasveryquietinthecaf.itishalfanhourswalktothecity.3.指示代词指代this或thatthisisyourpen,isntit?whatsthatonthedesk?iguessitmightbearobot.,itisobviousthatgoingforsportswilldoalotofgoodtoyourhealth.,itsapitythatthechineseteamdoesntattendtheworldcupinsouthafricathisyear.,4.it作形式主语(preparatorysubject),代替不定式，动名词或从句所表示的真正主语。,peoplebelievedthatthemandidttellalie.,itsbelievedthatthemandidttellalie.,thetwosidesaresaidtohavereachedanagreement.,itssaidthatthetwosideshavereachedanagreement.,theswordhasbeenprovedtodatefromqindynasty.,ithasbeenprovedthatthesworddatedfromqindynasty.,howearlymanwasabletoconstructstonehengeisamystery.,itsamysteryhowearlymanwasabletoconstructstonehenge.,it作形式主语的句型常见的有：,itisclear(obvious，true，possible，certain.)that,itissaid(reported，believed.)that.,itissuggested(ordered/demanded/insisted/commanded.)that.从句用虚拟语气,itisapity(shame/duty/fact/honor/nosurprise.)that.,ithappens(seems，looks，appears)that.,.itdoesntmatter(nowonder)+wh-/how-clause,ittakessb.todosth,itisnogood(use)doingsth,itlooks(seems)asif.,归纳,5.作形式宾语(preparatorysubject),为了记忆方便我们把该句型总结为6123结构。,6指主句中常用的动词：think,believe,make,find,consider,feel；1指的是形式宾语it；2指的是宾补的两种形式：形容词或名词；3指的是真正宾语的三种形式：不定式短语，动名词短语或从句。,wethinkitourdutytocleanourclassroomeveryday.hefeltitimportantlearningenglishwell.theyfounditdifficultthattheywouldfinishtheirworkintwodays.,itwaswithastrongbeliefthatmartinlutherkingledmangmovementsagainstracialdiscrimination.,6.用于强调结构（emphaticstructure）,itis/was+被强调部分+that/who.+其他成分,imettominthestreetyesterday.,强调结构的一般疑问句型：is/was+it+所强调的部分+that/who?,wasityouthatmettominthestressyesterday?,强调结构的特殊疑问句型：疑问词+is/was+it+that/who?,whowasitthatyoumetinthestreetyesterday?,wherewasitthatyoumettomyesterday?,.notuntil.句式用于强调句型要注意否定词not前移,构成：,itis/wasnotuntil+被强调部分+that.,ididtgotobaduntil10oclockyesterdayevening.,itwasnotuntil10oclockyesterdayeveningthatiwenttobad.,ididntrealizeshewasafamousfilmstaruntilshetookoffherdarkglasses.,itwasnotuntilshetookoffherdarkglassesthatirealizedshewasafamousfilmstar.,3.itisnouse(和他们争论这一问题),youaresimplywastingtime.(argue),6.hisparentsmanageedto(使成为可能)forhimtogoabroad.(possible),4._（不要紧/没关系）whetherwegotogetherorseparately.(matter),7.accordingtothewitnesses,itwasattwooclock(该事故发生).(happen),1.(正在下雨)whentheyleftthestation.(rain),2.(对他来讲很困难)tostudytwolanguages.(difficult),8.(正是在这片耕地上)thatthefarmersproducefoodforthewholepopulationofchina.(arable),10.it(直到他们联手)thattheyachievedtheirgoals.(join),9.it(直到1920年)thatregularradiobroadcastsbegan.(until),(普遍认为)thatchinasfastdevelopmentineconomywillbenefitmanycountriesintheworld.(generally,believe),1.itwasraining2.itsdifficultforhim3.arguingwiththemaboutthisquest