高中英语it的用法课件 35页

\nIt的用法\nIt’s10:08It’slovelyItweighsonly3kilosIt’salargesumofmoney\n2.2.指时间:Itwasnearlymidnightwhenshecameback.2.3.指环境:Itwasveryquietinthecafé.2.4.指距离：Itishalfanhour’swalktothecitycentre.3.it的其他用法3.1.表示谁在做某事的句子：Whoisit?---It’sme.Herfacelightedwhenshesawwhoitwas.3.2.用来泛泛的指某件事：Soyouaregoingtobemarriedthistime？Whenisit？Itdoesn’tmatter.Itisashame,isn’tit?\nit可用来指代前文提到的人,物或事情,也可以用来指时间,金钱,距离,天气等自然现象基本用法:\n1.S+think+it+necessary+(forsb.)todosth.Thechairmanthought___necessarytoinviteProfessorSmithtospeakatthemeeting.(05全国)A.thatB.itC.thisD.himSentencepatterns:B…find…possiblefeel…important…/clause形式宾语\n2.S+V+it+one’sduty+(forsb.)todosth./clause3.S+V+it+nogood+doingsth.nouse形式宾语Ithinkithisdutytocleantheblackboard.Sentencepatterns:…aruleanhonour…\n……findpossibleS+think+it+necessary+(forsb.)todosth./clausefeelimportant……Sentencepatterns:形式宾语…arule2.S+V+it+one’sduty+(forsb.)todosth./clauseanhonour…3.S+V+it+nogood+doingsth.nouse\nIlike___intheautumnwhentheweatherisclearandbright.(04全国)A.thisB.thatC.itD.one点拨:这是it作形式宾语的一种特殊用法.少数动词(如like,love,enjoy,dislike,hate,appreciate等)或包含介词的动词短语(如seeto,dependon等)后接宾语从句,必须先由it担任形式宾语,再接从句.Ilike(enjoy,hate…)itwhen….Iwouldappreciateitif……seeto(dependon…)itthat…Sentencepatterns:C形式宾语\n1.Itisnecessarytobepreparedforajobinterview.Havingtheanswersreadywillbeofgreathelp.2.TheForeignMinistersaid,“Itisourhopethatthetwosideswillworktowardspeace.”3.Itisknowntoeverybodythatthemoontravelsroundtheearthonceeverymonth.形式主语高考真题\nItisclear(obvious，true，possible，certain....)that.....该句型中it是形式主语，真正的主语是that引导的主语从句，常译为＂清楚（显然，真的，肯定．．．）＂　是主语从句最常见的一种结构。Itisveryclearthathe’sroundandtalllikeatree.=Thathe’sroundandtalllikeatreeisveryclear.\n4.Itisimportant(necessary，strange，natural...)that...该句型和上一个同属一个句型；由于主句中的形容词不同，that后的从句中要用虚拟语气（should+动词原形），should可以省去，建议记住该句型中的形容词。Itisimportantthatwe(should)learnEnglishwell.Itisnecessarythathe(should)rememberthesewords.5.Itissaid(reported，learned....)that...该句型中的it仍是形式主语，真正主语是that引导的主语从句；该结构常译为＂据说（据报道，据悉．．．）＂。ItissaidthathehascometoBeijing.Itisreportedthatanotherearthsatellitehasbeenputintoorbit.\n6.Itissuggested(ordered/demanded/insisted/commanded...)that...该句型和上一个同属一个句型，主句中的过去分词是表示请求，建议，命令等词时，that后的从句要用虚拟语气（should+动词原形），should可以省；常译为＂据建议；有命令．．．）Itissuggestedthatthemeeting(should)beputoff.Itwasorderedthatwe(should)arrivethereintwohours.\n7.Itisapity(ashame...)that...该句型中，that后的从句一般用虚拟语气（should+动词原形），should可省去．表示出乎意料，常译为＂竟然＂。没有这种意义时，则不用虚拟语气。Itisapitythatsuchathing(should)happeninyourclass.这种事竟然发生在你们班上，真是遗憾！Itisapitythatheisill.他生病了，真遗憾！8.Itistime(abouttime，hightime)that...该句型中that后的从句应该用虚拟语气，值得注意的是①常用过去时态表示虚拟．②有时也用should+动词原形，should不能省，常译为＂是（正是）．．．的时侯．．．＂Itistimethatchildrenshouldgotobed.=Itistimethatchildrenwenttobed.\n9.Itisthefirst(second...)timethat...该句型要和上一个句型区别开来，该句型中的that从句不用虚拟语气，而用完成时态，。至于用什么完成时态，由主句的谓语动词的时态决定。如果是一般现在时，后面从句用现在完成时态；如果是一般过去时，后面从句则用过去完成时态，该结构中that可以省去；it有时用this替换．常译为＂是第一（二）．．．次．．．＂。ItisthefirsttimeIhavebeenhere.=ThisisthefirsttimeIhavebeenhere.10.Itis....since...。该句型主要用作处理瞬间动词的完成时，又要和表示一段时间的时间状语连用的问题，主句中是时间作表语，其时态是现在时或完成时，since引导的从句通常是一般过去时态，而且是瞬间动词。如果主句是一般过去时，从句则用过去完成时。Itis(hasbeen)5yearssincehisfatherdied.\n11.Itis...when...。该句型中的when引导的是一个时间状语从句，主句中的it指时间，表语由具体的时间充当，常译为＂当．．．的时候，是．．．＂Itwas5o’clockwhenhecamehere.12.Itbe...before...该句型主句中的it指时间，主句中的时态常是将来一般时或过去时两种时态．主句中的表语多是long，notlong，3days，2weeks等表示时间段的词或短语，常译为＂．．．之后．．．＂。Itwas3daysbeforehewenttoBeijing.Itwillbenotlongbeforehefinisheshisjob.13.Ithappens(seems，appears)that...该句型中it是形式主语，that引导的是主语从句，主句中的happen，seem等词是不及物动词。Ithappened(sohappened)thathemethisteacherinthestreet.碰巧．．.Itseemsthathewillbebackinafewdays.看来．．．\n14.Ittakessb....todosth.该句型中的不定式是真正的主语，it是形式主语，句型中的直接宾语是时间，常译为＂做．．．要花费某人．．．＂。IttookthousandsofpeoplemanyyearstobuildtheGreatWall.15.Itisnogood(use)doingsth.该句型中的真正主语是动名词短语，主句中的表语可以是nogood，(notanygood)，nouse，(notanyuse)。ItisnogoodlearningEnglishwithoutspeakingEnglish.16.Itdoesn’tmatterwhether(if)...该句型中whether(if)引导的从句是真正主语，该句型常译为　＂不论（是否）．．．没关系．．．。Itdoesn’tmatteriftheyareold.\n17.Itiskind(ofsb.)todosth.该句型中的不定式短语是真正主语，如果不定式的逻辑主语是由of引起，主句中的形容词必须是能表示逻辑主语特征的形容词。常见的有：bad，brave，careless，clever，cruel，foolish，good（好心的），honest，horrible，kind，lazy，modest，naughty，nice（有教养的），polite，rude，silly，stupid，wise，wrong（错误的）等。这个句型可以改写为：sb.iskindtodosth.。Itiskindofyoutosayso.=Youarekindtosayso.\n18.Itisnecessary(forsb.)todosth.该句型与上一个同属一个句型，如果不定式的逻辑主语是由for引起，主句中的形容词通常是表示重要性，紧迫性，频繁程度，难易，安全等情况的形容词。常见的形容词有：①important，necessary，natural②easy，safe，common，normal，hard，difficult，dangerous，unusual，rare，impossible，pleasant等。=在①中的形容词作表语可以用从句改写，如：Itisimportantforhertocometotheparty.=Itisimportantthatshe(should)cometotheparty.\n…possibleItis/was+adj.necessary+(forsb.)todosth./clauseimportant……one’sdutyIt+is/was+n.one’shope+clause/(forsb.)todosth.anhonour……saidItis/wasp.p.known+that-clausebelieved…形式主语\nPractice\nItistheabilitytodothejob__mattersnotwhereyoucomefromorwhatyouare.A.oneB.thatC.whatD.itItis/was+被强调的部分+that/who+句子其他成分强调句型高考真题\nItwas___backhomeaftertheexperiment.A.notuntilmidnightdidhegoB.untilmidnightthathedidn’tgoC.notuntilmidnightthathewentD.untilmidnightwhenhedidn’tgoInwhichplayis___yourbrotherappears?A.thatwhereB.thiswhenC.itthatD.itwhereItwasinthelab___wastakenchargeofbyProfessorZhang___theydidtheexperiment.A.where;thatB.which;whereC.that;whereD.which;that强调句型被强调的部分是notuntil引导的时间状语?强调句型用于疑问句,被强调的部分是特殊疑问词或从句引导词?Inwhichplayisitthat…?Itis…that…Isit…that…?Idon’tknowinwhichplayitisthat…强调句型和各种从句高考热点?\nExerciseBar\nTheParkersboughtanewhousebut___willneedalotofworkbeforetheycanmovein.A.theyB.itC.oneD.which2.We’vebeenlookingathousesbuthaven’tfound___welikeyet.A.oneB.onesC.itD.them3.I’mmovingtothecountrysidebecausetheairthereismuchfresherthan___inthecity.A.onesB.oneC.thatD.those易误辨析:it/one/thatBACthehousethattheParkersboughtahousetheair\n1.It’syears___(since,before,after,that)Ipaintedthisbeautifulpicture.2.Itwillbeyears___(since,before,after,that)Ipaintthisbeautifulpicture.3.Itwasyears___(since,before,after,that)Ipaintedthisbeautifulpicture.4.It’sforyears___(since,before,after,that)Ihavepaintedthisbeautifulpicture.易误辨析:表示从since从句谓语动作发生以后到现在所经过的一段时间，译为“自从......以来已多久了”Itis+时间段+since(过去时)...表示从过去某一时间到before从句谓语动作发生所经过的一段时间,译为“多长时间后才/就做了…”It+was+时间段+before(过去时)…表示从现在起到before从句谓语动作发生所经过的一段时间,译为“多长时间后才会/就会做…”It+willbe+时间段+before(一般现在时)…______________________\nTranslatethefollowing:过了很久他才回来.2.我们很久后才会见面的.3.我离开这所学校已经很久了.Itwaslongbeforehecameback.Itwillbelongbeforewemeetagain.ItislongsinceIleftthisschool.Itis+时间段+since(过去时)...It+willbe+时间段+before(一般现在时)…It+was+时间段+before(过去时)…易误辨析:\nDoyouwanttoliveanother100yearsormore?Someexpertssaythatscientificadvanceswillonedayenablehumanstolasttensofyearsbeyondwhatisnowseenasthenaturallimitofthehumanlifespan…Thereisagreatpushsothatpeoplecanlivefrom120to180years,”hesaid.“Somehavesuggestedthatthereisnolimitandthatpeoplecouldliveto200or300or500years.”However,manyscientistswhospecializeinageingaredoubtfulaboutit.(04全国D)Theunderlined“it”refersto____A.agreatpushB.theideaoflivingbeyondthepresentlifespanC.theideaoflivingfrom200to300yearsD.theconservativeestimateReadingcomprehension\n走进2006年高考\n1.IfIcanhelp___,Idon’tlikeworkinglateintothenight.A.soB.thatC.itD.them2.AsthebusiestwomaninNorton,shemade___herdutytolookafteralltheotherpeople’saffairsinthattown.A.thisB.thatC.oneD.it3.I’dappreciate___ifyouwouldliketoteachmehowtousethecomputer.A.thatB.itC.thisD.you4.____isourbeliefthatimprovementsinhealthcarewillleadtoastronger,moreprosperouseconomy.A.AsB.ThatC.ThisD.It\n5.Ijustwonder___thatmakeshimsoexcited.A.whyitdoesB.whathedoesC.howitisD.whatitis6.Catherineboughtapostcardoftheplaceshewasvisiting,addressed___to___andthenposteditatthenearbypostoffice.A.it;herB.it;herselfC.herself;herD.herself;herself7.It’salready10o’clockIwonderhowit___thatshewastwohourslateonsuchashorttrip.A.cameoverB.cameoutC.cameaboutD.cameup\n\nTheUsageof“it”基本用法常见用法特殊用法三个考点三个句型三个句型三个替代词三个it后接时间段的句型易误辨析强调句型形式主语形式宾语Summary\nHomework1.Collectasmanyphrasesandthesentencepatternsincluding“it”asyoucan.2.Finishtheexercisesonyourpieceofpaper.\nThankyou