It用法总结

ThePracticalUsagesof“”用作人称代词用作形式主语、形式宾语用在强调句型中用在固定结构中Whereisthecat?----It’sunderthetable.”Ican’tfindmycarkey.DoyouknowwhereIputit?Youhavesavedmylife.Ishallneverforgetit.Whoisit?----It’sme.”It’syourmotheronthephone.Thebabysmiledwhenitsawitsmother.It’sThursdaytoday.Alovelyday,isn’tit?It’squiethere.Itwasabout9:40whenwestartedthelesson.Hishomeisn’tfar.It’sjust10minutes’walk.IT用作人称代词Readthesentencesbelowandtrytotellwhat“it”refersto:IT常指除人以外的一切生物和事物，也指先前已提到的事物，以避免重复。IT也可指代性别不详或不必强调性别的人，尤其指婴幼儿。IT指代日期、时间、天气、环境、距离、度量衡等情况。IT&ONE/THATIT和ONE都表“一个”，代指前文提到的事物，但IT指“同一个”，而ONE指“同一类”，通常one之前或之后一定有修饰语来加以区别。Ihadagoodpen,butIlostityesterday.I’llbuyanewonetomorrow.---Haveyouseenawhalealive?---Yes,I’veeverseen______.A.thatB.itC.suchD.one2.IwasdisappointedwiththefilmIsawyesterday.Ihadexpected____tobemuchbetter.A.thatB.thisC.oneD.it•Idislikeitwhenyouwhistle.我不爱听你吹口哨。•Wereallyappreciateitwhensheofferedtohelp.她来帮忙了，我们十分感激。•I’dpreferitifIdidn’thavetodosomuchwork.要是我不必做那么多工作，那就太好了。IT用作形式主语，真正主语：不定式、动名词或从句Itbe+adj+R.subItbe+prep短语+todoItbe+v-ed+clauseItbe+n+R.subItissurprising…Itisnecessary…真奇怪……很自然……不可能…可能…tobecontinuedItisbeyondsbtodo某人无法做某事Itisuptosbtodosth该由某人负责做某事ItismydutytodoItisapuzzle……Itisasurprise…真遗憾……是常识。难怪…注：Itisuseless注意：ItisnousedoingsthItisnogooddoingsthItisawasteoftimedoing据估计、据说、据报道、据宣布，据称人们认为、人们希望人们建议It’suptoyoutodecidewhentosetoff.Itisbeyondmetoexplainwhy.5.IT+v.+clause…_______________________(似乎)you’remistaken._______________________(碰巧)shewasn’tinthatday._______________________(我从没想到)thatperhapsshewaslying._______________________(不太重要)wherewelive._______________________(没有什么区别)whetherwegobyrailorbyair.Itseems/appearsthatIt(so)happenedthatItneveroccurredtomeItdoesn’tmattermuchItmakesnodifferenceItisgood______youtohavegivenmesomuchhelp.A.ofB.forC.toD.withTrans.:在这样一个竞争激烈的社会中，掌握英语对我们来说是非常有用的。It’sveryusefulforustomasterEnglishinsuchacompetitivesociety.______togotheretoday.A.ThereisnotneedforyouB.Youneedn’tC.ItisnotnecessaryforyouD.ItisnoneedforyouTrans.:光说不练是没用的。It’suselessjusttalkingwithoutpractice.Itisnousecryingoverthespiltmilk.______isnogood______withoutdoinganything.A.This,talkingB.There,talkingC.It,talkingD.That,totalkItisnotagoodhabit_______________(熬夜).Itwashisduty__________________________(照看孤儿).It’sawasteoftime______________________________(努力说服一个固执的人).tostayuplatetotakecareoftheorphanstryingtopersuadeastubbornmanItisverylikelythat_______________________(他们会赢这场比赛).Itisnotcleartome_______________(他为什么那么做).theywillwinthematchwhyhedidsoItisstrangethathe______.A.shouldsaysoB.shouldhavesaiditC.saysoD.saiditIT用作形式主语，指代主语从句2.IT+be+n.+clause…Trans.:生命是如何开始的仍是个迷。It’sapuzzlehowlifebegan.真遗憾……是常识。难怪…Itisapity/shamethat…Itiscommonknowledgethat…(It’s)nowonder(that)…Trans.:还没决定谁来做这份工作。Itisnotdecidedwhowilltakethejob.据估计、据说、据报道、据称Itisestimated/said/reported/claimedthat…人们认为、人们希望Itisbelieved/thought/hoped/expectedthat……广为人知Itisknowntoallthat…Itissuggestedthattheexperiment_______________(do)withgreatcare.(should)bedoneIT用作形式宾语Sb+think/believe/consider/find/feel/make+a./n.+todo/doing…/clause…Shefounditdifficult_____________(convince)him.Ithinkitnouse__________(argue)withhim.Wehavemadeitarule________(do)listeningpracticeeveryWednesday.I’ll______________(保证)seetoitthateverythingisreadyintime.I______________________(想当然的认为)theywerecomingtoShanghai.toconvincearguingtodoseetoitthattookitforgrantedthatIT用在强调结构中Itis/was+被强调部分+that+剩余部分Tomisondutytodayinthefactory.①②③④①ItisTomthat/whoisondutytodayinthefactory.②It’sondutythatTomistoday…③It’stodaythatTomisondutyin…④It’sinthefactorythatTomison…一般疑问句的强调：IsitTomthat/whoisondutytodayinthefactory?IT用在强调结构中Iamastudent.ItisIthat/whoamastudent.Ididn’thearfromheruntillastsummer.Itwasn’tuntillastsummerthatIheardfromher.特殊疑问句的强调：Wh-+is/wasitthat+剩余部分？Whocalledhim“comrade”?Whowasitthatcalledhim“comrade”?Howdidyouforgettolockthedoor?Howwasitthatyouforgottolockthedoor?IT用在强调结构中1.Whichofthefollowingistrue?A.ItisIwhoistoblame.B.ItisIwhoamtobeblamed.C.Itismewhoaretoblame.D.ItisIwhoamtoblame.2.Wasitbytheroadside______theystoodtalkingaboutthefilm?A.whereB.thatC.whatD.bywhich3.Whodoyouthink______haswonthefirstprize?A.thatisitB.thatitisC.itisthatD.isitthatIT用在强调结构中4.Was______intheroom______youusedtowork_____youfoundthesecrethidingplace?A.it,that,thatB.it,where,thatC.it,where,whereD.it,that,where5.Isitinthatfactory______“RedFlag”carsaremade?A.inwhichB.whereC.thatD.which6.Isitthefactory______youworkedwiththeworkersforayear?A.inwhichB.thereC.inthatD.thatIT用在固定结构中放轻松。信不信由你。---Whatwasthepartylike?---Wonderful.It’syears______Ienjoyedmyselfsomuch.A.afterB.beforeC.whenD.sinceIt+is/hasbeen+一段时间+since+v.(过去时)…It+willbe+一段时间+before+v.(现在时)…It+was+一段时间+before+v.(过去时)…Takeiteasy.Believeitornot.…已经有多少时间了。还要多少时间…过了多少时间….IT用在固定结构中**该是Sb做某事的时候了。Itistime(forsb)todo/that+(v.过去时)…**是Sb第几次做某事。It+be+thefirst/secondtimethat…(v.完成时）**做某事花了Sb…时间。Ittakessb.TIMEtodo…Trans.:我们该彻底扫除一下房子。这是史上第一次两个诺贝尔奖颁发给同一个人。Mary花了二十分钟为晚宴挑选了一条合适的裙子。Itishightimethatwegavethehouseathoroughcleaning.ItisthefirsttimeinhistorythattwoNobelPrize