资源描述:
《It作形式主语和宾语常见句型》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、It作形式主语常见句型动词不定式,动名词或主语从句作主语时,通常把它们放在谓语动词前,而用it作形式主语,放到句首,常见句型有:1.It+be+形容词(clearobviousstrange…)+主语从句,如:ItisuncertainwhetherhecancometoJenny’sbirthdaypartyornot.2.It+be+名词词组+主语从句,这类名词有:afact,apity,ashame,anhonour,aquestion等,如:It’sapitythatyoumissedtheexcitingfootballmatch.Itremainsaquestionw
2、hetherhewillcomeornot.3.It+be+过去分词+主语从句,这类过去分词有:announced,believed,expected,hoped,decided,reported,said,shown等,如:Itisreportedthat16peoplewerekilledintheearthquake.Itisnotdecidedwhowillgivetheoperationtothepatient.4.It+不及物动词(seem,appear,happen等)+主语从句,这类不及物动词有:appear,happen,seem等,如:Itseemedthathe
3、didn’ttellthetruth.IthappenedthatIwasoutwhenhecalled.5.It+be+形容词+forsb+动词不定式这类句型常用形容词easy,difficult,hard,important,possible,wise等作表语,有时候为了强调不定式动作的执行者,常在不定式前加forsb,如:It’snecessaryfortheyoungtomastertwoforeignlanguages.Itisunwisetogivethechildrenwhatevertheywant.【2011北京卷,25】It’simportantforthefig
4、uresregularly.A.tobeupdatedB.tohavebeenupdatedC.toupdateD.tohaveupdated6.It+be+形容词+ofsb.+动词不定式,这类形容词常是表示心理品质,性格特征的形容词,如:kind,nicestupid,clever,foolish,polite,impolite,silly,selfish,considerate等。某人和这些形容词可以构成主系表结构。如:It’sverykindofyoutohelpmewiththework.=Youarekindtohelpme.Itseemedselfishofhimnott
5、osharehisdictionarywithothers.=Heseemedselfishnottosharehisdictionarywithothers.7.It+be+名词或形容词+动名词,这类名词和形容词常常是:good,nogood,nouseharm,awasteof,useless,senseless等,如:It’sawasteoftimetalkingtoheranymore.Itisnousearguingaboutthematterwithhim.8.It+take(sb.)+时间(金钱)+动词不定式,如:Ittooktheworkersalmostthree
6、yearstofinishbuildingthedam.Itwilltakeawholedaytogettothetopofthemountainonfoot.实战演练:1.Itisgenerallyconsideredunwisetogiveachild—heorshewants.(NMET1997)A.howeverB.whateverC.whicheverD.whenever2.Infactisahardjobforthepolicetokeeporderinanimportantfootballmatch.(2001上海)A.thisB.thatC.thereD.it3.is
7、afactthatEnglishisbeingacceptedasaninternationallanguage.(NMET1995)A.ThereB.ThisC.ThatD.It4.Isnecessarytotakeoffourshoeswhenweenterthelab?(MET88)A.everyoneB.thisC.herD.it5.________willtakeyoualotoftimetofindhiminthecrowd.A.ItB.IC.