英语it的用法课件分析

It’s10:08It’slovelyItweighsonly3kilosIt’salargesumofmoney1、it的基本用法（1）代替上文中提到过的人或事物。指代人时，一般用于小孩或身份不十分明朗的人。1)IhaveaninterestingbookandIlikeit.2)－Whoisthebaby?－It‘smyteacher’sson．3)—Whoisknockingatthedoor?—It’sme.(2).指环境情况等。Itwasverynoisy(quiet)outside.(3).指时间、季节等。1)—Whattimeisit?—It’seighto’clock.2)Itoftenrainsinsummerhere.4.指距离。Itisabout2kilometersfromheretotheschool.2．用作形式主语.1).Itis+形/名+(forsb)+todosthItiseasiertosaythantodo.Itisagoodacttohelptheothers.2).Itis+nogood/nouse+doingsthIt’snogooddrinkingwaterinsuchadirtyriver。It’snousetalkingwithhim.3).itis+名/形/过去分词+that①Itisapity(shame,fact)that…Itisashamethathedidn’tpasstheexam.②Itissurprising(obvious,true,good,possible,clear)thatsb（should）dosthItwasclearthattheyshouldhavenodesireforpeace.③Itissaid(reported,known)that…Itissaidthattheticketshavebeensoldout.4)Itseems(happened,turnedout,appearstome.)that…Itseemedthatthingswerenotastheyexpected.当复合宾语中的宾语是不定式、动名词、宾语从句时,往往把宾语放在它的补足语后面,而用it作形式宾语,放在宾语补足语之前。e.g.Ithinkitnousearguingwithhim.我认为和他争吵没有用。2.作形式宾语。IfounditveryinterestingtostudyEnglish.我发现学英语非常有趣。Hemadeitclearthathewasnotinterestedinthissubject.他非常清楚地表示他对那门学科不感兴趣。3.用于强调结构要强调句子的某一部分,通常是主语、状语、宾语,可以把it当作先行词。这种句子的结构是：“Itis/was+被强调部分+that/who+句子的其他部分”。如果强调的是人,可以用who,whom代替that。e.g.ItisProf.LinwhoteachesusEnglish.(强调主语)ItisEnglishthatProf.Linteachesus(强调宾语)ItwasinShanghaithatIsawthefilm.(强调状语)Itwasin2001thatIwenttouniversity.(强调状语)e.g.Thefrogisnotawarm-bloodanimal.It’sacold-bloodedone.4.用作人称代词代替前文提到的事物。5.作为非人称代词1)起指示代词的作用,指一个人或事物。e.g.—Whoisknockingatthedoor？—It’sme.2)泛指天气。e.g.It’sawarmsunnyafternoon.3)泛指时间e.g.Itwasnearlymidnightwhenshecameback.4)泛指环境e.g.Itisnoisyhere.5)泛指距离e.g.Itishalfanhour’swalktothecitycenter.6.用于某些习语makeit及时赶到;成功;办成e.g.Youcanmakeitifyouhurry.如果你赶快还可以及时赶到。Youneedn’tworry;hewillmakeit.你不必担心,他会办到的。catchit被责骂;受处罚e.g.IfIcomehomelateI’llcatchitfrommymother.如果我回家晚了,我妈妈会骂我。You’llcatchitbecauseofyourcarelessness.你会因为你的不小心受处罚的。7.It的一些习惯用法Howisitwithyourstudy?学习好吗？That’sit.这就对了。Itwenthardwithhim.他身遇不幸。Itisalloverwithme.我完蛋了。Wemustfightitout.我们必须坚持到底。Ican’thelpit.我没有办法。I.单项选择1.Hedidn’tmake____clearwhenandwherethemeetingwouldbeheld.(天津)A.thisB.thatC.itD.these2.____isourbeliefthatimprovementsinhealthcarewillleadtoastronger,moreprosperouseconomy.(浙江)A.AsB.ThatC.ThisD.It3.ThedoctoradvisedVerastronglythatsheshouldtakeaholiday,but______didn’thelp.(全国卷III)A.itB.sheC.whichD.he4.I’dappreciate______ifyouwouldliketoteachmehowtousethecomputer.(山东)A.thatB.itC.thisD.youII.单句改错下面的句子选自高考试题的改错部分，用你的火眼金睛把错误找出来吧！1.Youwon’tfinddifficulttogettothecitycenter.(全国卷IV)2.Iknowthereisnoteasytobeateacher.(湖北)3.ThisisnotsurprisingthattheSilverGhostwasregardedas“thebestcarintheworld”.find后加itthere→itThis→ItHomeworkReviseandmastertheuseofit.