it用法公开课课件

Whatjobscan“it”do?It用法归纳一、指代it二、形式it三、强调it四、含有it的短语、谚语Lookatthepicture._____isapictureofourschool.It一、1.用作人称代词,代表前面提到的人或事物.Mypenismissing.Ican’tfind___anywhere.it---Isthisjacketyours?---Yes,______is.2.用于代替指示代词this和that。it3.用以表示时间、距离、天气、季节、环境等.1).It’s10:08.2)It’sonlyhalfanhour’swalkfromheretoourschool.3)Itissunnytoday,isn’tit?4)It’sspringnow.5)It’squiethere.TimeDistanceWeatherSeasonCircumstance（环境）4、可以用来指动物、婴儿和未确定身份的人。Whoisit?It’slovely.Itweighsonly3kilos.二形式it-------形式主语，形式宾语ItisvitalforallofyoutohaveagoodcommandofEnglish.你们掌握英语是至关重要的。形式主语TohaveagoodcommandofEnglishisvitalforallofyou.1.代替动词不定式做主语1)Itbeadj.(forsb.)todosth.此处adj.通常为描述事件的形容词:easy,difficult,necessary,important,possible,useful,useless,vital（至关重要的）,essential（必要的）...Makesentences:1.我们保持自然界的平衡是有必要的。Itisnecessaryforustokeepthebalanceofnature.2.在日常生活中练习你的英语口语是非常重要的。It’sveryimportantforyoutopractiseyouroralEnglishindailylife.你让我们做这些练习是明智的。Itiswiseofyoutoletusdotheseexcises.It'skindofyoutohelpmeworkouttheproblem.2)Itbeadj.ofsb.todosth.此处adj.通常为描述人的形容词:kind,,nice,rude,polite,cruel,considerate（细心的）,thoughtful,careful,careless,foolish,stupid,clever,wise.你能帮我，真好。It’sverykindofyoutohelpme.It’sveryniceofyoutooffermeaseat.给我让座，您太好了！Makesentences:3It+takes、took(sb.)+时间/金钱/精力等+动词不定式Ittookmemuchtimetoedit（编辑）thispowerpoint.说实话需要很大的勇气。Ittakesgreatcouragetotellthetruth.成功需要付出极大的努力。Ittakesgreatefforts/painstosucceed.It’snogood/use/pleasuredoing…做……没益处，没用，没趣2.代替动名词做主语Itisnousecryingoverspiltmilk.只阅读不理解没什么益处。Itisnogoodreadingwithoutunderstanding.Itispossiblethatwewillrealize（实现）ourdreamsoneday.3.代替主语从句作形式主语1)Itisclear(obvious,true,possible,certain…)that...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……)”,是主语从句最常见的一种结构。①Itisadj.+从句显然，手机给我们带来了许多好处。Itisclearthatcellphoneshavebroughtusalotofbenefits.Itisnecessarythatyou(should)rememberthe3500words.2)Itisimportant(necessary，strange，natural,surprising...)that...that后的从句中要用虚拟语气（should+动词原形。我们用有效的方法学习很重要。Itisimportantthatweshouldlearninaneffectiveway.Itissaidthathehasasecretweaponinmathslearning.Itissaid(reported/believed.....)that...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…)”。②Itisv-edthat…人们相信健康比财富更重要。Itisbelievedthathealthismoreimportantthanwealth.Itisashamethatourcityhasbeenundertheshadowofsmogthesedays.③Itis+noun+从句Itisapity(ashame/anhonor/afact/asurprise/...)that...很遗憾/可耻的是/很荣幸…很遗憾你不能来参加这个派对。Itisapitythatyoucouldn’tcometotheparty.我很荣幸被邀请参加你的生日聚会.ItisanhonorthatIwasinvitedtoyourbirthdayparty.④Ithappens(seem,appears,turnsout,)等不及物动词+that...碰巧．．.看来．．．结果证明….Itseemedthathedidn’ttellthetruth.IthappenedthatIwasoutwhenhecalled.⑤Itis(high)timethat...从句应该用虚拟语气，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．．．＂Itistimethatweshouldworkhard.Itishightimethatweshouldtakeactiontodealwiththeenvironmentalproblems.是我们采取行动解决环境问题的时候了！形式宾语动词+it+形容词/名词+（forsb）todo/doing+that从句think,believe,consider,feel,make,find…harduselessimportantnecessarynatural/essential…nouse/nogood/awasteoftime/ourdutyIfounditveryinterestingtostudyEnglish.形式宾语Ithinkiteveryone’sdutytoprotectourmother–theearth.Ithinkitimportantthatyou(should)makeaplan.IhavemadeitarulethatIwilldosomeEnglishreadingeveryday.规定，习惯于我发现学英语很有趣。我认为保护我们的地球母亲是每个人的责任。我认为你制定一个计划很重要。it作形式宾语的特殊句型结构动词+it+if/that/when动词有喜欢类：enjoy,like,appreciate,prefer讨厌类：hate,dislike如果你能给我这个机会我将不胜感激。Iwouldappreciateitifyoucanoffermethechance.Ilikeitwhenmymotherishappy.Ihateitwhenpeopletalkwiththeirmouthsfull.Hetookitforgrantedthathewouldpasstheexam.Don’tdepend/relyonitthathewillarriveontime.IowedittoTomthatIfoundthejobIwanted.想当然地认为指望把什么归功于某人Theymadeavow（誓言）ofloveinfrontofthehugestonein2005.三.强调句型It+be+被强调部+that/who(aperson)其他部分Itwasthecouplethat/whomadeavowofloveinfrontofthehugestonein2005.Itwasavowoflovethatthecouplemadeinfrontofthehugestonein2005.Itwasinfrontofthehugestonethattheymadeavowoflovein2005.Itwasin2005that…Itwasfiveo’clock_________Igothome.Itwasatfiveo’clock_______Igothome.whenthatAthatBwhenItwasnotuntilshetookoffherdarkglassesthatIrealizedshewasafamousfilmstar.Itisnotuntil…+that...直到…才请指出下列句子的强调部分：Itiswhatwethinkthatcontrolsus.四、it常用的固定搭配1.makeitsucceed成功、搞定ItwashardbutIfinallymadeit.2.takeiteasy不要慌,别担心。3.Italldepends/thatalldepends.那要视情况而定。4.It'suptosb.这取决于你。Itisnevertoolatetolearn.It'snousecryingoverspiltmilk.Striketheironwhileitishot.Thescientists’nextresearchjobwasclear:Findoutwhatinthefish’sbloodkeptitfromfreezing.Theirsearchledtosomereallystrangethingmadeupofaprotein(蛋白质)neverbeforeseeninthebloodofafish.Whenitwasremoved,thebloodfrozeatseawatertemperature.（2008辽宁）70.Whatdoestheunderlinedword“it”inParagraph5referto?A.Atypeofice-saltmixture.B.Anewlyfoundprotein.C.Fishblood.D.Sugarmolecule(分子）.B阅读1.Janewaswalkingroundthedepartmentstore.Sherememberedhowdifficult_31_wastochooseasuitableChristmaspresentforherfather.(2009广东）2.Heaskedhisteacher,Sir,thewaterwasawful.Whydidyoupretendtolike38?“（2010广东）语法填空itit4.Will__matterifyoudon'ttakeyourbreakfastRecentlyatestweregivenintheUnitedSates.3._____isknowntoallthatthetimewecanuseislimited.Thereforeweshouldmakefulluseofourtimetostudyhardsoastoserveourco