英語語法復(fù)習(xí)總結(jié)-it用法

SummaryofEnglishGrammarReview-ItUsage目錄IntroductionTheusageofitasapronounTheusageofitasaformalsubjectTheusageofitasaformalobject目錄TheusageofitguidedemphasissensesTheusageofitguidingsubjectclausesSummaryandReview01IntroductionToprovideacomprehensiveoverviewoftheusageof"it"inEnglishgrammarToclarifythevariousfunctionsandmeaningsof"it"indifferentcontextsToenhanceunderstandingandimproveaccuracyintheuseof"it"PurposeandbackgroundFunctionsof"it"asasubject,object,andcompletionUsageof"it"inspecialcasessuchasclearintentions,empiricalconstructions,andextrapolationDefinitionandbasicusageof"it"asapronounReviewscope02TheusageofitasapronounItcanbeusedtorefertoobjectsorthingsthathavebeenmentionedpreviouslyintheconversationortextForexample,"Idroppedmyphone.Canyouhelpmefindit?"ItcanalsobeusedtorefertoageneralideaorconceptthathasbeenintroducedForinstance,"Itisimportanttostayhydratedduringexercise."ReferstothingsInsomecases,"it"canbeusedasareferenceproposaltostandinforthesubjectofasense,specificallywhenthesubjectislongorcomplexThishelpstoavoidrepetitionandmakethepresencemoreconsensusForexample,"Thecompanythatmanufacturesthemostinnovativeproductsintheindustry,ithasseenasignificantincreaseinrevenueoverthepastyear."Referene"It"canbeusedtorefertoaspecifictimeorplacethathasbeenmentionedpreviouslyForinstance,"We'remeetingat8O'clock.Makesureyou'rethereontime,it'simportant."Itcanalsobeusedtorefertoageneraltimeorplace,suchas"It'strainingoutside"or"It'sgettinglate,weshouldheadhome."Referstotimeorplace03TheusageofitasaformalsubjectAsadummysubject"It"canbeusedasaplaceholdersubjectwhentherealsubjectistoolongorcomplexForexample,"Itisimportanttostudyhard."Withaverb+advisory/nounphrase"It"isoftenfollowedbyaverbandanadvisoryornounphrasethatdescribesthesubjectForinstance,"Itseesthatheisnotcoming."SentenceStructure"It"ispersonalanddoesnotrefertoaspecificpersonorthingItisusedtomakeageneralstatementorobservationEmphasizingtheverb:Byusing"It"asthesubject,thefocusisshiftedtotheverbanditsactions,morethanthesubjectitselfSemanticcharacteristicsExcessiveuseof"It"asaformalsubjectcanmakesensessoundawkwardandunnaturalUseitsparselyforclarityandreadabilityAvoidingWhenusing"It"asaformalsubject,makesurethecontextisclearsothatthereadercanunderstandwhat"It"refersto.AvoidanceambiguityEnsurecontextisclearPrecautionsforuse04TheusageofitasaformalobjectAsadummysubject"It"canbeusedasaplaceholdersubjectwhentherealsubjectistoolongorcomplexForexample,"Itisimportanttostudyhard."Asaformalobject"It"canbeusedasaformalobjectafterverbslike"like,""dislike,""approve,"etc.Forinstance,"Iapproveitwhenyouhelpmewithmyhome."SentenceStructure"It"oftencarriesanpersonaltone,focusingontheactionorsituationmorethanthedoerImpersonality"It"canbevagueandgeneral,referringtosomethingnotspecificallymentionedVagueSemanticcharacteristics123Excessiveuseof"it"canmakesensesclearandfusingAvoiding"it"Makesure"it"referstosomethingspecificandclearinthecontexttoavoidambiguityEnsureclarityofreferenceSometimes,usingotherpronounsorrephrasingthepresencecanmakeitmoreconsistentandclearAdvisoralternativesPrecautionsforuse05TheusageofitguidedemphasissensesIt+be+emphasizedpart+that/who+otherparts:Thisisthebasicstructureofanemphasissentence,whereithasnoactualmeaningandonlyservesasaguideword.Theemphasizedpartcanbeplacedafteritandconnectedtootherpartsofthesentenceusingthatorwho.Emphasizesubject:Ifyouwanttoemphasizethesubject,youcanplaceitafteritandthenusethattoconnectotherpartsofthesentence.Forexample,"ItwasJohnwhobrokethewindow."Emphasizetheobject:Ifyouwanttoemphasizetheobject,youcanplaceitafteritandthenusethattoconnectotherpartsofthesentence.Forexample,"ItwasthebookthatIborrowedfromthelibrary."SentenceStructureEmphasizingadverbialssuchastimeandplaceInadditiontothesubjectandobject,emphasissentencescanalsobeusedtoemphasizeadverbialssuchastimeandplace.Forexample,"ItwasyesterdaythatImethiminthepark."要點(diǎn)一要點(diǎn)二EmphasizethepredicateverbIfyouwanttoemphasizethepredicateverb,youcanplacetheauxiliaryverbdobeforethepredicateverb.Forexample,"Idobelievethatheishonest."EmphasiscontentPayattentiontowordorderandpunctuation:Whenusingemphasissentences,itisnecessarytopayattentiontothecorrectuseofwordorderandpunctuationtoensuretheaccuracyandfluencyofthesentence.Payattentiontotheconsistencyoftenseandvoice:Whenusingemphasissentences,itisnecessarytopayattentiontotheconsistencyoftenseandvoicebetweentheemphasizedpartandotherpartsofthesentence.Avoidoveruse:Althoughemphasizingsentencescanenhancetheirexpressivepower,overusecanmakesentencesappearcumbersomeandrepetitive.Therefore,whenusingemphasissentences,itisnecessarytopayattentiontomoderation.Precautionsforuse06TheusageofitguidingsubjectclausesIt+be+objective+thatclauseInthisstructure,"it"isadummysubject,theobjectivedescribesthesituationorfeelingexpressedbythatclause,andthatclauseistherealsubjectofthesentenceForexample,"Itisclearthatheisunknown."It+be+noun+thatclauseHere,"it"isagainstadummysubject,thenounidentifiesthecategoryortypeofthesituationdescribedbythatclause,andthatclauseistherealsubjectForinstance,"Itisasharethathemissedtheopportunity."SentenceStructureThesubjectclausecancomeatthebeginningofthepresence,immediatelyafter"it."ThisisthemostcommonpositionforthesubjectclauseForexample,"Itisobjectivethatheislying."AtthebeginningofthepresenceIfthesubjectclauseislongorcomplex,itcanbesetoffwithacommaafter"it."ThishelpstoclarifythepresencestructureandmakesiteasiertounderstandForinstance,"Itistrue,ashehimselfhasbeenadmitted,thathewasatthesceneofthecrime."AfteracommaThepositionofthesubjectclauseAvoiding"it"While"it"isausefulwordtoguidesubjectclauses,overlappingitcanmakeyourwritingsoundrepetitiveandunnaturalTrytovaryyourpresencestructurebyusingotherwordsorphrasesinsteadof"it"whenpossibleEnsureclarityWhenusing"it"toguideasubjectclause,makesurethatthemeaningofthepresenceisclearandambiguousAvoidusingvagueorambiguouslanguagethatcouldfuseyourreaderCheckforgrammarerrorsAswithanyothertypeofpresence,it'simportanttocheckforgrammarerrorswhenusing"it"toguideasubjectclausePayattentiontoverbtense,agreementbetweensubjectandverb,andproperfunctionPrecautionsforuse07SummaryandReview"It"canbeusedasaplaceholdersubjectwhentherealsubjectistoolongorcomplexForexample,"Itisimportanttostudyhard."Itasasubject"It"canalsofunctionasanobject,typicallyinsenseswheretherealobjectisimpliedorunderstoodForinstance,"Ilikeitwhenyousmile."Itasanobject"It"canreferbacktoapreviouslymentionednounoridea,actingasapronoonForexample,"Thebookwasinteresting.Itkeepsmeupallnight."ItasanantagonistKeycontentreviewAvoiding"it"While"it"isaversatilepronoun,overlappingitcanle