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当前位置:首页 > 中学教育 > 初中教育 > 高中英语it的用法课件-(详细有高考题-精品)
MrLiuit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,天气等自然现象一、基本用法:1.it作人称代词⑴.it的最基本用法是作人称代词,主要指刚提到的事物,以避免重复:Ningboisabeautifulcity,isn’tit?⑵.也可以指动物或婴儿(不知性别/未知性别的婴儿或孩子):Isthisyourdog?No,itisn’t.⑷.也可指抽象事物:Itwasagreatsurprisetomewhenhedidathinglikethat.⑶.用来泛泛的指某件事:Itisashame,isn’tit?Youaregoingtobemarriedthistime?Whenisit?2.非人称代词itit有时并不指具体的东西,而泛指天气、时间、环境等,称为非人称的it:⑴.指天气:Itisalovelyday,isn’tit?Itisabitwindy.⑵.指时间:Itwasnearlymidnightwhenshecameback.⑶.指环境:Itwasveryquietinthecafé.⑷.指距离:Itishalfanhour’swalktothecitycentre.二、形式宾语:1.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1形式宾语2nogood3.S+V+it++doingsth.nouseIthinkithisdutytocleantheblackboard.Sentencepatterns:2.S+V+it+one’sduty+(forsb.)todosth./clause…aruleanhonour…Sentencepatterns:形式宾语句型…arule2.S+V+it+one’sduty+(forsb.)todosth./clauseanhonour…nogood3.S+V+it++doingsth.nouse……findpossible1.S+think+it+necessary+(forsb.)todosth./clausefeelimportant……6主句中常用的动词:think,believe,make,find,consider,feel;1形式宾语it;2宾补的两种形式:形容词或名词;3真正宾语的三种形式:①不定式短语②动名词短语③引导的宾语从句。Wethinkitourdutytocleanourclassroom.HefeltitimportantlearningEnglishwell.Theyfounditdifficultthattheywouldfinishtheirworkintwodays.形式宾语归纳该句型中的it作形式宾语,记忆方便---“6123结构”。Ilike___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.1.Ilike(enjoy,hate…)itwhen….2.Iwouldappreciateitif…3.…seeto(dependon…)itthat…Sentencepatterns:C形式宾语特殊用法1enjoy,like,/love,dislike,appreciatehate,don'tmind,befondof,feellike,seeto/dependon/insiston动词+it+that+clause例:IhateityoucandancesowellbutIcan't.动词+it+as+noun/adj.+从句(把….视为….)accept,regard,take,see,view例:Thespeakertakesitasencouragingwhenmanystudentsattendhislecture.形式宾语特殊用法2动词+it+tosb.+that…oweittosb.that…把…归功于…leaveittosbthat…把…留给某人去做takeitforgrantedthat把…想当然keepitinmindthat…把…记在心里例1.Don'tbothertotidyyourroom.Justleaveittometodo.他想当然的以为女朋友会再回来。Hetookitforgrantedthathisgirlfriendwouldcomebackagain.形式宾语特殊用法3三、形式主语:1.___isnecessarytobepreparedforajobinterview.Havingtheanswersreadywillbeofgreathelp.2.TheForeignMinistersaid,“___isourhopethatthetwosideswillworktowardspeace.”3.___isknowntoeverybodythatthemoontravelsroundtheearthonceeverymonth.形式主语高考真题ItItIt…possibleItis/was+adj.necessary+(forsb.)todosth./clauseimportant……saidItis/wasp.p.known+that-clausebelieved……one’sdutyItis/was+n.one’shope+clause/(forsb.)todosth.anhonour…形式主语该句型中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.1.Itisclear(obvious,true,possible,certain....)that.....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,silly,stupidgood(好心的),honest,horrible,kind,lazy,modest,naughty,nice(有教养的),polite,rude,wise,wrong(错误的)等。这个句型可以改写为:sb.iskindtodosth.。2.Itiskind(ofsb.)todosth.Itiskindofyoutosayso.=Youarekindtosayso.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:3.Itisnecessary(forsb.)todosth.Itisimportantforhertocometotheparty.=Itisimportantthatshe(should)cometotheparty.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。4.Itisimportant(necessary,strange,natural...)that...Itisimportantthatwe(should)learnEnglishwell.Itisnecessarythathe(should)rememberthesewords.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..."5.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!6.Itistime(abouttime,hightime)that...Itistimethatchildrenshouldgotobed.=Itistimethatchildrenwenttobed.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.7.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.8Itissaid(reported,learned....)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。9.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.Ithappens(seems,appears,comesabout,turnsout,looks)that...Ithappened(sohappened)thathemethisteacherinthestreet.碰巧...Itseemsthathewillbebackinafewdays.看来..Itis(hasbeen)5yearssincehisfatherdied.11.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’clockwhenhecameher
本文标题:高中英语it的用法课件-(详细有高考题-精品)
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