高二英语 it用法课件VIP免费

GrammarTheuseof“it”Itisnevertoooldtolearn.活到老,学到老。Itisnousecryingoverspilt(溢出的)milk.覆水难收。Ittakesthreegenerations(代)tomakeagentleman.十年树木,百年树人。Proverbs(谚语)with“It”Theuseof“it”一、用作人称代词,代表前面提到的人或事物1)Who’sit?________me.2)Lookatthepicture._____isapictureofourschool.It’sIt二、用于代替指示代词this和that。---Isthisjacketyours?---Yes,______is.it三、用以表示时间、距离、天气、气候、季节、环境等1)Itishalfpasteightnow.2)It’sonlyhalfanhour’swalkfromheretoourschool.3)Ihopethatitwillbefinetomorrow.4)Ithasrainedmuchthisyear.5)It’sspringnow.6)It’squiethere.TimeDistanceWeatherWeatherSeasonCircumstance替代作主语的从句、动词不定式、动名词,而把真正作主语的从句、动词不定式、动名词置于句尾。四、it用作形式主语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,dangerous,right,wrong,legal,useful,useless,Itisillegaltodriveacarwithoutalicense.2)Itbeadj.ofsb.todosth.此处adj.通常为描述人的形容词:kind,,nice,rude,polite,cruel,considerate,thoughtful,careful,careless,foolish,stupid,clever,wise,crazy.It'skindofyoutohelpmewiththeproblem.It’s(well)worthone’swhiledoing/todo…Itisworthmywhiletoexplorethecity.这值得我花时间/精力勘察这个城市It’s(well)worthwhiledoing/todo…Itisworthwhiletoexplorethecity.It‘snogood/use/pleasuredoing…Itisnousestudyingonlyatschool.2.代替动名词做主语3.代替主语从句作形式主语Itisclear(obvious,true,possible,certain…)that...（注意没有itissurethat）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。e.g.Itisveryclearthathe’stall.①Itisadj.+从句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…)”。ItissaidthathehascometoBeijing.HeissaidtohavecometoBeijing.②Itisv-edthat…③Itis+noun+从句Itisapity(ashame/anhonor/agoodthing/afact/asurprise/...)that...该句型中,that后的从句一般用虚拟语气(should+动词原形),should可省去。表示出乎意料,常译为“竟然”。没有这种意义时,则不用虚拟语气。如：Itisapitythatsuchathing(should)happeninyourclass.这种事竟然发生在你们班上,真是遗憾！Itisapitythatyoucan’tcome.你不能来，真是遗憾！五、it作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,放在宾语补足语之前。该句型中的it作形式宾语,常用的动词有think,believe,make,find,consider,feel等。Ithinkitnousearguingwithhim.参考：Itisnousearguingwithhim.IfounditveryinterestingtostudyEnglish.参考：ItwasveryinterestingtostudyEnglishHemadeitclearthathewasnotintothecar.参考：Itwasclearthathewasnotintothecar.Manynewreserveshavebeenbuilt,_______________________________________(这使这些猴子可能)tosurvive.whichmakesitpossibleforthemonkeysit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,dislikeIwouldappreciateitifyoupaidincash.Ilikeitwhenmymotherishappy.Ihateitwhenpeopletalkwiththeirmouthsfull.其他类：seetoitthat,oweittosbthat.rely/dependonitthat,takeitforgrantedthat,leaveittosbthat,makeitarulethat…注意：keep/bearinmindthat中间没有itSeetoitthatthebabymustbefedwhenhungrybutnottoomuch.留意，务必Hetookitforgrantedthathewouldpasstheexam.想当然地认为Don’tdepend/relyonitthathewillarriveontime.(指望)IowedittoTomthatIfoundthejobIwanted.把…归功于某人Iwillleaveittoyouwhetheryo...