2024届高三英语复习：it的用法课件

it的用法it的用法代词it常用来指代前文提到的事或物，还用在各种特殊句型中。1.it用作形式主语（1）It+be+adj.+主语从句Itisclear（obvious/true/possible/certain…）+that/whether…从句…Itisessential（important/necessary/right/strange/natural…）+that从句…（should+动词原形）ItisuncertainwhetherhecancometoJenny’sbirthdaypartyornot.ItisimportantthatweshouldlearnEnglishwell.it的用法代词it常用来指代前文提到的事或物，还用在各种特殊句型中。（2）It+be+名词词组+主语从句It’sapitythatyoumissedtheexcitingfootballmatch.

（3）It+不及物动词（seem/appear/happen/turnout…等）+主语从句

（看来/似乎/碰巧/证明是）Itseemedthathedidn’ttellthetruth.IthappenedthatIwasoutwhenhecalled.it的用法（4）It’s+adj.+for/of+sb.+todosth特别注意：如何选择介词for或of？如果该句型中的形容词是用来说明“某人”的性格或品质（如kind,good,nice,wise,stupid,clever,foolish,silly,impolite,selfish,considerate...）时，介词用of（“某人”和这些形容词可以构成主系表结构），其它情况介词用for。It+be+adj.(easy/difficult/hard/important/possible/necessary...)+forsb+todosthIt+be+adj.(kind/nice/clever/stupid/foolish/silly/impolite/selfish/considerate...)+ofsb+todo/havedonesth.Itisunwiseofyoutogivechildrenwhatevertheywant.孩子需要什么你就给什么是不明智的。Itisnecessaryforyoutoturntoyourteacherswhenintrouble.

你遇到困难时求助老师是必要的。it的用法（5）It+be+n.&adj.(nogood/nouse/useless/senseless/awasteoftime(money)/…)+v.-ingItisnousearguingaboutthematterwithhim.和他争论这件事没有用。（6）It+took/willtake(sb)+时间（或金钱）+todosth.Ittooktheworkersalmostthreeyearstofinishbuildingthedam.工人们花了将近三年的时间才把大坝建成。it的用法2.it用作形式宾语主语+find/make/consider/feel/think/believe/imagine/regard/suppose…+it（形式宾语）+adj.&n.+todosth.或句子（真正宾语）Rememberingmorewordsandexpressions,youwillfinditeasiertoreadandcommunicate.=Remembermorewordsandexpressions,andyouwillfinditeasiertoreadandcommunicate.记住更多的单词和表达方式，你会发现阅读和交流更容易。it的用法3.it在特定句型中的运用（1）It(never)occurredto/cameto/hit/strucksb.that…某人（从没）想到…Itneveroccurredtomethatyoucouldsucceedinpersuading（说服）himtochangehismind.（2）Itis/hasbeen+时间段+since从句(过去时态)…自从…以来有…久了Itis/hasbeentwoweekssinceyoucametoourschoolfortheexchangeprogram,whichhasbenefitedallofus.（3）Itisthefirst/second/lasttimethat+sb.has/havedonesth.是某人第…次做某事Itwasthefirst/second/lasttimethat+sb.haddonesth.是某人第…次做某事Unfortunatelyhedidn’twinthisyear.Itwasthesecondtimethathehadbeennominated（提名）,butgonehomeempty-handed.it的用法3.it在特定句型中的运用（4）Itwas/took+一段时间+before从句（过了…时间才…）Itwillbe/willtake+一段时间+before从句（要过…时间才…）Itwasn’t/didn’ttake+一段时间+before从句（没过…时间就…）Itwon’tbe/won’ttake+一段时间+before¬从句（过不了…时间就…）Afterthatitstilltooksevenyearsbeforetheygotmarried.I’msorrytohavekeptyouwaiting,butit’llstillbesometimebeforeBriangetsback.Itdidn’ttakelongbeforenewtroublearose.Itwon’tbelongbeforewemeetagain.it的用法3.it在特定句型中的运用（5）It’s(high/about)timethat+sb.didsth./shoulddo(should不可省)（是…的时候了）Thefinalexaminationiscomingsoon,it’sabouttimethatwegotdownto/shouldgetdowntoourstudies.（6）Itissuggested/required/ordered/insisted/…thatsb.shoulddosth（据建议/有命令…）Itwasorderedthatwe(should)arrivethereintwohours.（7）Itis…when从句（当某事发生时，时间是在…）Itwas10o’clockwhentheyarrivedatthevillage.注意:when引导的是一个时间状语从句，主句中的it指时间。it的用法3.it在特定句型中的运用（8）主语+make+it+arule+todo/that从句

（定规矩；习惯于）

主语+make+it+clear+that从句（明确表示；阐明）Imadeitaruletorecitefivesentenceseachday.我把每天背诵五句话定为一条规则。HemadeitclearthathetotallyagreedwithwhatIsaid.他明确表示完全同意我所说的话。（9）Itissaid/reported/learned/assumed/announced/…that从句…=sb./sth.issaid/reported/learned/assumed/announced/…todo/tohavedone（据说/报道/了解/推测/宣称…）（10）Itlooks/seems/appears/soundsasif¬从句

（看起来好像…；听起来好像…）注意：asif引导一个状语从句，如果与事实不相符合，则用虚拟语气。it的用法3.it在特定句型中的运用（11）Itremainstobeseenwhether/when/…从句

（有待证实）（12）hate/dislike+it+when/if¬从句（讨厌…）（13）appreciate+it+if¬从句（假如…，将不胜感激）（14）seeto/answerfor/dependon/insistonit+that¬从句（确保/对…负责/指望/坚持）（15）H