浙江省杭州市塘栖中学高中英语 Unit3 A Healthy Life P3 Grammar课件 新人教版选修6.ppt

theuseof it 1 unit3grammar objective thepronoun it isusedfrequentlyinenglishandhasmanydifferentfunctions tolearnanduse it properly 语法讲解建议采用归纳法 如尽可能多的呈现一些相关例句 或可让学生从已学课文中找相应例句 引导学生试着从所观察到的语言现象中总结出语言规则和语法规律 lookatthesesentencesinthebook itisabeautifuldayhereandiamsittingunderthebigtreeattheendofthegarden itseemsamazingthatatmyageiamstillfitenoughtocycle20kilometresinanafternoon it smybirthdayintwoweekstimeandi llbe82yearsold believeme iknowhoweasyitistobeginsmokingandhowtoughitistostop iwasaddictedinallthreeways soitwasverydifficulttoquit itisnoteasytostopsmoking butmillionshavemanagedtoquitandsocanyou payattentiontotheword it 下面几个同学都谈到了北京和北京奥运会 你知道下面每句话中it都指什么吗 itisimportantformetobeavolunteerinbeijingolympicgames it sapityimissedtheopeningceremonyofbeijingolympicgames beijingisabeautifulcity isn tit itwasagreatsurprisetomewhenigotaticketofbeijingolympicgamesbychance itisonlytenminutes walktobird snestfrommyhome 从上面的话中我们看到it的用处很广 那it到底有什么用法呢 接下来我们就详细地来讲解一下 做形式主语it可以用作先行词作为句子的主语 而把句子的真正主语移到后面去 可以移到后面的主语是 不定式句子的谓语可以是 e g itisimportanttoknowyourlimitations 知道自己的局限性是很重要的 be 名词 e g itisagoodideatohavealittlenotebookhandy 手边有个小笔记本是个好主意 be 形容词 be 介词短语 e g itisagainstthelawtodothat 这样做是违法的 其他类型的谓语e g itgivesmegreatpleasuretoseethemovie 观看电影让我很高兴 2 动名词用nogood nouse greatfun anewexperience等名词作表语 e g itisfunworkingforhim 为他工作很有意思 也可用某些形容词作表语 e g doyouthinkitisworthwhilequarrellingwithhim 你认为和他吵值得吗 其他的谓语形式 e g doesitmatterwastingalittlemoney 稍微浪费一点钱行吗 3 主语从句可以是that引导的 e g itisstrangethatithasn tbeennoticedbefore 真奇怪 它以前没有引起注意 itisawonderthatheisstillalive 他居然还活着 真是个奇迹 ithappenedthattheharvestwasbadthatyear 碰巧 那年的收成不好 itissaidthatanearthquakestruckjapan 据说日本发生了地震 也可能是wh 词引导的e g itisstillaquestionhowmanypeoplearetocome 多少个人会来 还是个问题 itisnobusinessofyourswhereispendmysummer 我在哪儿过夏天 这不关你的事 itremainstobeseenwhetheritwilldousharmorgood 此事对我们是好是坏尚待分晓 itwasclearenoughwhathemeant 他的意思很清楚 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这门学科不感兴趣 e g thefrogisnotawarm bloodanimal it sacold bloodedone 3 用作人称代词 代替前文提到的事物 4 作为非人称代词 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 5 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 口语 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 6 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 asthebusiestwomaninnorton shemade herdutytolookafteralltheotherpeople saffairsinthattown a thisb thatc oned it 2 isourbeliefthatimprovementsinhealthcarewillleadtoastronger moreprosperouseconomy a asb thatc thisd it 3 thedoctoradvisedverastronglythatsheshouldtakeaholiday but didn thelp a itb shec whichd he4 i dappreciate ifyouwouldliketoteachmehowtousethecomputer a thatb itc thisd you 5 catherineboughtapostcardoftheplaceshewasvisiting addressed to andthenposteditatthenearbypostoffice a it herb it herselfc herself herd herself herself review it的用法 形式主语 形式宾语 人称代词 代替指示代词 非人称代词表示时间 日期 地点 天气 温度 距离 环境等 某些习语及习惯用法 1 ificanhelp idon tlikeworkinglateintothenight 2006全国ii a sob thatc itd them quizi multiplechoice 2 hegothisfirstbookpublished itturnedouttobeabestseller whenwas wasin2000whenhewasstillincollege 2007浙江 a that thisb this itc it thisd that it 3 iadmiredthepainting andedsaidhewouldlikemetohave asagiftfromhim 2008四川延考区 a oneb itc thisd some 4 ilikethishousewithabeautifulgardeninfront butidon thaveenoughmoneytobuy 2009四川 a oneb itc thisd that 5 beingaparentisnotalwayseasy andbeingtheparentofachildwithspecialneedsoftencarrieswith extrastress 2009北京 a itb themc oned him 6 thefactthatshewasforeignmade difficultforhertogetajobinthatcountry 2010辽宁 a sob muchc thatd it7 thedoctorthought wouldbegoodforyoutohaveaholiday 2010全国ii a thisb thatc oned it 8 theemploymentratehascontinuedtoriseinbigcitiesthankstotheeffortsofthelocalgovernmentstoincrease 2011北京 a themb thosec itd that 9 thetwogirlsaresoalikethatstrangersfind difficulttotellonefromtheother 2011山东 a itb themc herd that10 wefeel ourdutytomakeourcountryabetterplace 2011天津 a itb thisc thatd one 11 sarahmade totheairportjustintimetocatchherplanethism