it的用法讲解绝对经典系列上课讲义.ppt

it的用法,一、代词人称代词it可以用来代替一个名词、短语、句子，以免重复。(1)指代刚提到过的同一事物（同类；同一）Thisismynewcar.Iboughtityesterday.(2)指动物或不考虑性别的婴儿Whereisthecat?Itsunderthebed.Thebabycriedwhenitwashungry.(3)在情景中确认某人或事物（不知性别的人）Whoisit?Itsme.(敲门)-Whositoverthere?-Itsthemilkman.,(4)指代前句或后句所述的情况/事情HesmokesinbedandIdontlikeit.Itwouldbegreatifyoucouldjoinus.(5)指时间、距离、天气或环境等（非人称代词）Whattimeisit?Itsseven.Itsabout50kilometersfromheretomyhome.Itissnowing.Itwasveryquietinthegarden.,Iwasdisappointedwiththefilm，Ihadexpected_tobemuchbetterAthatBthisConeDit,2.Tomsmotherkepttellinghimthatheshouldworkharder,_didnthelp.A.heB.thatC.sheD.butit,二、引导词it(1)it用作形式主语:当_,_,_作主语时，常用it做形式主语，Itsapitytorefuse.拒绝是令人遗憾的。Itsnousesayinganymoreaboutit.再谈这事没有用。Itsnotknownwhereshewent.她到哪里去了没人知道。,不定式,动名词,从句,一it用作形式主语,注：Itsnouse/nogood/nopleasure/useless/awasteof+doingB.Itissaid(reported/believed/expected/accepted)that据（报道，认为）.C.Ithappens(appears,seems)that;Itstruckme/occurredtomethat突然想到.D.Itisapity(nowonder,)thatE.Itdoesntmatterthat没关系;Itmakesnodifferencethat没影响F:Itsimportant(necessary,easy,kind)_/_sbtodosth.,for,of,他说什么都没关系。_他好像总是对的。_碰巧我当时没有带钱。_据说他已经入党了。_,Itdoesntmatterwhathesaid,Itseemsthatheisalwaysright,IthappenedthatIdidnthavemoneyonme.,Itissaidthathehasjoinedtheparty.,_difficulttobeinaforeigncountry,especiallyifyoudontspeakthelanguage.ThatisalwaysB.ItisalwaysC.ItwouldbealwaysD.Thatwillalwaysbe,2._onedaytheywillhaveenoughanimalstosetthemfree.ItishopedforB.whatishopedthatC.AsishopedthatD.Itishopedthat,(2)it用作形式宾语:当_、_、_等用作宾语且其后跟有_时，使用形式宾语it，而将真正的宾语移至句末。这类的动词有使役动词，find,make，feel,think,consider,seetoitthat(务必)等。如：Ifinditeasytogetonwithher.Ithinkitbestthatyoushouldstayhere.,不定式,动名词,从句,宾补,it用作形式宾语:,(3)句式A.喜好：enjoy,like,dislike,love,hate,appreciateitwhen/if/that.Idontlikeitwhenpeopletalkwiththeirmouthsfull.Iappreciateitifyoucanhelpme.他讨厌别人用他的自行车。_我不喜欢你生气的样子。_,B.固定句式：我们花费10天去那里。Ittook_轮到你来回答问题了。Its_turn_该吃饭了。Itstimeto,Hedislikes/hatesitthatpeopleusehisbike,Idontlikeitwhenyouareangry.,us10daystogothere,your,toanswerthequestion,havedinner,1.Wemustmake_tothepublicthatsomethingshouldbedonetostoppollution.WhatisclearB.itisclearC.itclearD.thatclear2.Ihate_whenpeopletalkwiththeirmouthsfull.A.itB.thatC.theseD.them,1）Its(about/high)time+that-从句.(虚拟)2）Itsfirst(second)time+that-从句.“某人第几次做某事”。(从句用完成时)3）Its/hasbeen+时间段+since-从句.“自从有一段时间了”。4）Its+时间段+before-从句-“过多长时间才”5）Itisuptosbtodosth.“该由某人做某事”6)Ifitwerenotfor/Ifithadntbeenfor“若不是因为”7)IoweittoyouthatIamstillalive.“归功于”多亏有你我才仍然活着。8)Itookitforgrantedthathewouldhelpus.我认为他会帮助我们的。“认为理所当然”9)Idependonitthathewillgowithus.我还指望着他能和我们一起去呢。,(4)强调句Itis/wasthat/who注意以下几点：A.It后用is/was这种单数形式。B.被强调部分是指人时，用_/_，被强调部分指物时，用_。C.被强调部分是指时间或地点时，用that，一般不用_，_之类的。ItisIwhoamright.是我对。,他是死于日本。_他是昨天结婚的。_她是住在什么地方?_是谁教你们英语?_他是什么时候来的？_,that,who,that,when,where,ItwasinJapanthathedied,Itwasyesterdaythathegotmarried,Whereisitthatshelives?,WhoisitthatteachesyouEnglish?,Whenwasitthathecame?,ThecomputersinourschoolareconnectedtotheInternetwhilethoseintheirschoolarent.Thefootballplayersonourteamseemtobemoreenergeticthanthoseonyourteam.,That/those一般用于替换有定冠词的名词；one/ones用于替换有不定冠词的名词。,Thestyleofthebuildingissimilartothatofatemple.ACDplayermadeinJapancostsmorethanonemadeinHongKong.,That/those一般不带前置定语，但必须有后置定语。One/ones都可。当替换词的后置定语用所有格的of短语或当替换词被所有格修饰时，不用one/ones而用thatof/thoseof.,Ilikethevasebetterthantheone/thatinanothershop.Thewindowsofyourflatarecleanerthanthoseofmine.Agrandparentsjobiseasierthanthatofaparent.,2)it,this和that,都可以替代前文已提到的事或情况，细微差别在于it不如其余两者那么强调。,Soshedecidedtopaintthedoorpink.Itupsettheneighboursabit.Soshedecidedtopaintthehousepink.Thatreallyupsettheneighbours,asyoucanimagine.,当前面提到的事物不止一件时，it通常指最先提到的事物，而This/that是指最后提到的事物。,Wekeeptheicecreammachineinthespareroom.Itismainlyusedbythechildren.(指themachine)Wekeeptheicecreammachineinthespareroom.This/Thatismainlyusedbythechildren.(指thespareroom),This可以出现在它所指代的事物之前；而that则指上文所提到的事物。,Listentothis!Wewillhavethreedaysoff.“Apennysavedisapennyearned.”Whosaidthat?,3)It和one,It用以指特定的前面提到过的事物，即：it和它替换的是同一个事物，it前