it的用法.ppt

It it it it it Itisnevertoooldtolearn 活到老 学到老 Itiseasiertofallthantorise 摔倒容易爬起来难 Itisnousecryingoverspilt 溢出的 milk 覆水难收 Itneverrainsbutitpours 泼水 不鸣则已 一鸣惊人 Proverbs 谚语 with It Itiseasytoopenashopbuthardtokeepitalwaysopen 创业容易守业难 Ittakesthreegenerations 代 tomakeagentleman 十年树木 百年树人 用作人称代词作非人称代词做形式主语作形式宾语用于强调结构习惯用法 1 Theboybecamefatterandfattereachdayand madehisparentssad A whichB whatC heD it 1 D it指代上文提到的事 2 Someoneisringingthedoorbell Goandsee A whoisheB whoheisC whoisitD whoitis 2 D it作人称代词 用来指代身份和性别等不明确的人 Lifeislikeafire itbeginsinsmoke andendsinashes 人生犹如火堆 始于青烟 终于灰烬 用作人称代词 代替前文提到的事物 指代身份和性别等不明确的人 it与one的区别 Doyoustillhavethebicycle No Ihavesold A thatB itC oneD this Isthisknifeyours No ItisXiaoZhang s Mineis onthedesk thatB itC theoneD this Mybikehasbeenstolen IthinkIshouldbuy A thatB itC oneD this Attention 这两个词都可以代表前面说过的名词 it用于同名同物的场合 one则用于同名异物的场合 it与that的区别 TheclimateofSouthChinaismild Ilike verymuch A thatB itC oneD this it指theclimateofSouthChina TheclimateofSouthChinaismuchbetterthan ofJapan that指theclimate A thatB itC oneD this 两词都可代替某一特定名词 但that指同一类 并非同一个 2 用作非人称代词 Readandanalyzethesentences ItisFridaytoday ItwasverycoldlastMonday Itisabout8 30now Itisabout25kmfromLongxiantoBazi ItliesinthesouthofShaoguancity Itis40 C Yougotahighfever Conclusion it可以用作非人称代词 表示 等 date weather time distance place temperature 日期 天气 时间 距离 地点 温度 她回来时已接近午夜 Itwasnearlymidnightwhenshecameback 这里很吵 Itisnoisyhere 今天很冷 Itisverycoldtoday 3 It做形式主语it可以用作句子的形式主语 而把句子逻辑上的真正主语移到后面去 可以移到后面的主语是 TodoV ing主语从句 Itisimportanttoknowyourlimitations 知道自己的局限性是很重要的 Itisagoodideatogocamping 去野营是个好主意 Itisagainstthelawtodothat 这样做是违法的 Itgivesmegreatpleasuretoseethemovie 观看电影让我很高兴 Todo nogood 不好 nouse 没用 greatfun 很有趣 worthwhile 值得 anewexperience 一种新的经历 Itis doingsth V ing Itisgreatfunworkingforhim 为他工作很有意思 Doyouthinkitisworthwhilequarrellingwithhim 你认为和他吵值得吗 1 It be 名词 that从句e g Itisapity afact awonder nowonderthat 2 It be 形容词 that从句e g Itisimportant likely possible rightthat 3 It 不及物动词 that从句e g Itseems happens appearsthat 4 It be 动词的过去分词 that从句e g Itissaid believed known reportedthat 主语从句 Itisawonderthatheisstillalive 他居然还活着 真是个奇迹 Ithappenedthattheharvestwasbadthatyear 碰巧 那年的收成不好 ItissaidthattherewasanearthquakeinJapan 据说日本发生了地震 主语从句中除了that也可能是疑问词引导的Itisstillaquestionhowmanypeoplearetocome 多少个人会来 还是个问题 ItisnoneofyourbusinesswhereIspendmysummer 我在哪儿过夏天 这不关你的事 Itremainstobeseenwhetheritwilldousharmorgood 对我们有好处还是有害处 还要等着瞧 4 It做形式宾语 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 放在谓语之后 结构 动词 it 宾语补足语 真正的宾语 不定式 动名词 从句 IT做形式宾语的6123结构6 动词 consider think make find believe feel1 形式宾语 it2 宾补 名词和形容词3 真正的宾语 todo v ing 从句 Ithinkitnousearguingwithhim 我认为和他争吵没有用 IfounditveryinterestingtostudyJapanese 我发现学日语非常有趣 5 用于强调句中 强调句基本结构 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代that 用强调句改写句子 Prof LinteachesusEnglish ItisProf LinwhoteachesusEnglish 强调主语 Prof LinteachesusEnglish ItisEnglishthatProf Linteachesus 强调宾语 IsawthefilminShanghai ItwasinShanghaithatIsawthefilm 强调状语 Iwenttouniversityin2001 Itwasin2001thatIwenttouniversity 强调状语 not until 句型的强调句 1 句型为 Itis wasnotuntil 被强调部分 that 其它部分2 注意 因为句型中Itis wasnot 已经是否定句了 that后面的从句要用肯定句 Hedidn tgotobeduntilhismothercameback Itwasnotuntilhismothercamebackthathewenttobed 6 用于特殊句型中 makeit asitis that sit forgetit gotit guessit worthit 及时赶到 成功 办成相当于infact inreality意为实际上 事实上相当于That sall That ssomuch 意为 到此为止 没有别的了 就这样 用于回答sorry 也可以委婉表示拒绝或不同意 意为明白了 理解了猜对了相当于useful 有好处 值得做 takeiteasy believeitornot10 It all depends11 It suptoyou 12 Itcouldn tbebetter worse 13 Itdoesn tmatter 14 Don tmentionit 15 takeitforgranted 不要慌 别担心 信不信由你 那要看情况 还没有定下来 由你决定 没有比这更好的了 更糟糕的了 没关系 不用谢 想当然 7 常用句型及考点 辨析 It be adj ofsbtodosthIt be adj forsbtodosth 1 It be adj of forsbtodosth Itiskindofyoutohelpme Itisfoolishofhimtodothat Itisimportantforustostudyhard Itisdifficultforthemtosettletheproblem 如果句型中的形容词是用来描述sb的特征 如kind rude cruel polite right wrong foolish silly stupid wise等 则用of此时句式可以换成sb be adj todosth It skindofyoutohelpme Youarekindtohelpme 若句型中形容词是用来描述不定式性质的 如important necessary hard difficult easy natural common等 则用for 2 Itistime abouttime hightime that 是时候该做某事了本句型中that后的从句应该用虚拟语气 3 Itisthefirst second timethat 第一次 本句型中that后的从句要用现在完成时4 Ittakessbtime moneytodosth 5 Itdoesn tmatterwhether 是否 没关系6 Itisuptosbtodosth 由某人决定做某事 高考链接1 Hedidn tmake clearwhenandwherethemeetingwouldbeheld 天津2007 A thisB thatC itD these2 isourbeliefthatimprovementsinhealthcarewillleadtoastronger moreprosperouseconomy 浙江2006 A AsB ThatC ThisD It C D 3 ThedoctoradvisedVerastronglythatsheshouldtakeaholiday but didn thelp 2005全国 A itB sheC whichD he4 I dappreciate ifyouwouldliketoteachmehowtousethecomputer 山东2006 A thatB itC thisD you A B 5 Itwas hecamebackfromAfricathatyear hemetthegirlhewouldliketomarry 江西2009 A when thenB not untilC notuntil thatD olny when6 ItwasalongtheMissippiRiver MarkTwainspentmuchofhidchildhood 天津2008 A howB whichC thatD where C C 改错Youwon tfinddifficulttogettothecitycenter 2004全国 2 Iknowthereisnoteasytobeateacher 2004湖北 3 ThisisnotsurprisingthattheSilverGhostwasregardedas thebestcarintheworld find后加it there it This It Exercises 1 Ihate whenpeopletalkwiththeirmouthsfull A itB thatC theseD them2 Inwhichplayis yourbrotherwillappear A thatwhereB thiswhenC itthatD itwhere3 theharderyouwork thebetterresultyou llget A It sbelievedthatB WhatwebelievedthatC It sfactD Whatthefactis A C A 4 Nothingcanstopus A can titB canitC can tweD canwe5 Canyoutellushowthewarwaswonintheend Idon tknow A It shardtosayB Itdoesn tmatterC It snousesayingD Itdependsonthework B A 6 Does matteralotwhethershewillcomeherebybusorbytaxi A ThethingB thatC itD hermother7 Listen Someoneisunlockingthegoods mustbeyourfathercomingbackfromBeijing A ItB ThereC ThatD This C A 8 Haveyouwrittenalettertoher No butI mgoingtowrite tonight A itB thatC thoseD one9 Aretheycomingtothemeeting A IknowsoB IamsuresoC IamsureofitD Iquestionit10 nowprettylate wetookcandlesandwentupstairs A BeingB ForC ForbeingD Itbeing D A D 11 Theteachertoldthestudents A whytolearnEnglishimportantB whywasitimportanttolearnEnglishC whyitimportanttolearnEnglishD whyitwasimportanttolearnEnglish12 TheTVsetsmadeinChinaaremuchbetterthan inJapan A thatB thoseC themD it D B 13 Ourfoodandservicearebetterthan usedtobe A ItB weC theyD them14 I mlookingforaflat Wouldyoulike with garden A it theB it aC one aD one the15 fouryearssinceIjoinedtheArmy A ItwasB ItisC ThereisD Therewas C C B 谓语动词的强调 1 Itis was that 结构不能强调谓语 如果需要强调谓语时 用助动词do does或did Dositdown 务必请坐 Hedidwritetoyoulastweek 上周他确实给你写了信 Dobecarefulwhenyoucrossthestreet 过马路时 务必 千万 要小心啊 2 注意 此种强调只用do does和did 没有别的形式 过去时用did 后面的谓语动词用原形 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 其它句型 1 Itbe since 自从 已经 时间了本句型主句中用时间作表语 一般用现在时或完成时 since引导的从句常用瞬间动词的一般过去时态 主句如用一般过去时 则从句用过去完成时 Iti