初中英语中考专题复习课件：数词

SpecialReviewCoursewareforMiddleSchoolEnglis2023REPORTINGBasicknowledgeofnumeralsTheUsageofNumeralsSpecialusageofnumeralsAnalysisofErrorsinNumeralsPracticeandconsolidation目录CATALOGUE2023PART01Basicknowledgeofnumerals2023REPORTINGNumeralsarethenumbersusedinarithmeticoperations,suchasaddition,subtraction,multiplication,anddivision.DefinitionNumeralscanbeclassifiedintocardinalnumerals(indicatingquantity)andordinalnumerals(indicatingorder).ClassificationDefinitionandclassification

TheroleofnumeralsinsentencesCountingNumeralscanbeusedtocountobjectsorevents,suchas"Thereare5applesonthetable."MeasurementNumeralscanbeusedtomeasureobjectsorevents,suchas"Thebookis20cmlong."OrderingNumeralscanbeusedtoindicateorder,suchas"Thefirstprize,thesecondprize,andthethirdprize."Units:Whenwritingnumerals,theappropriateunitsshouldbeused.Forexample,"1year"shouldbewrittenas"oneyear,"not"1year."PluralForms:Whenwritingnumeralsforpluralforms,theappropriatesuffixesshouldbeused.Forexample,"2apples"shouldbewrittenas"twoapples,"not"2apples."Hyphens:Whenwritingfractionsormulti-digitnumerals,hyphensshouldbeusedtoseparatethewholenumberfromthedecimalpointortoseparatedigits.Forexample,"3/4"shouldbewrittenas"three-fourths,"and"1500"shouldbewrittenas"onethousandfivehundred."TheWritingRulesofNumeralsPART02TheUsageofNumerals2023REPORTINGCardinalnumbersareusedtocountobjectsorpeople.Commonexamplesincludeone,two,three,andsoon.Theyarealsousedindates,phonenumbers,andothersequencesofnumbers.InEnglish,cardinalnumbersareusuallywritteninfiguresorspelledout.TheUsageofCardinalNumbersOrdinalnumbersareusedtoshoworderorposition.Theyareusuallywrittenwithasuffix,suchas"th"(e.g.,first,second,third).Ordinalnumbersarealsousedindates(e.g.,1stJanuary)andinaddresses(e.g.,2ndFloor).TheUsageofOrdinalNumbersScorescanbeexpressedusingcardinalnumbersorordinals.Forexample,ascoreof10canbewrittenas"ten"or"10th".Insomecases,scoresmayberoundedtothenearestwholenumberordecimalplace.TheexpressionofscoresTheyarewrittenwithadecimalpointfollowedbytheremainingdigits.Commonexamplesinclude0.5(half),0.25(quarter),and0.75(three-quarters).Decimalsareusedtoexpressfractionsorpartialamounts.Theexpressionofdecimals

TheexpressionofpercentagePercentagesareusedtoexpresspartofawholeasaproportion.Theyarewrittenasanumberfollowedbythesymbol"%".Forexample,25%means25partsoutof100.PART03Specialusageofnumerals2023REPORTING在英语中，表达倍数时通常使用"times"或"fold"等词，例如"fivetimesasmanyas"，"twicethesizeof"。表达倍数英语中表达分数时，分子用基数词，分母用序数词，例如"onethird"，"twofifths"。表达分数英语中小数的表达方式是先说整数部分，然后是"point"，最后是小数部分，例如"3.14"。表达小数Theexpressionofmultiples英语中表达时间段时，通常使用介词"in"，"after"，"before"，"between"，"during"，例如"inthemorning"，"afterlunch"。时间段的表达时间点的表达通常使用介词"at"，例如"at3o'clock"。时间点的表达Theexpressionoftime英语中表达年代时，通常使用基数词，例如"the1990s"。世纪可以用基数词表示，例如"the21stcentury"。Theexpressionofyear表达世纪表达年代地址的顺序在英语中，地址的顺序通常是从小到大，例如"streetnumber"，"city"，"state"，"country"。地址中常用词汇在英语中，地址中常用的词汇包括"street"，"avenue"，"lane"，"housingcomplex"，"apartment"，"suite"。ExpressionofaddressPART04AnalysisofErrorsinNumerals2023REPORTING总结词学生在处理基数和序数时容易混淆，需要明确两者的概念和用法。详细描述基数表示数量，如"threeapples"，而序数表示顺序，如"thirdinline"。学生常常将序数误用作基数或将基数误用作序数，如将"firstday"错误地翻译为"oneday"。ConfusionbetweenCardinalandOrdinalNumbersMisuseoffractions总结词学生对分数的理解和使用存在误区，需要加强对分数概念的掌握。详细描述学生常常在处理分数时出现错误，如将"onethird"错误地表示为"threeone"，或者在比较分数大小时出错，如认为"twothirds"大于"onehalf"。学生对于小数、百分数和小数系统的概念和转换存在混淆。总结词学生常常将小数和百分数混淆，如将"0.75"错误地表示为"seventy-fivepercent"，或者在处理小数和百分数之间的转换时出错，如无法正确地将"75%"转换为小数形式。详细描述Confusionbetweendecimals,percentages,anddecimalsystems总结词学生对倍数的理解和使用存在误区，需要加强对倍数概念的掌握。详细描述学生常常在处理倍数时出现错误，如将"threetimesasmuch"错误地表示为"threetimes"，或者在比较倍数大小时出错，如认为"fivetimes"大于"threetimes"。MisuseofmultiplesPART05Practiceandconsolidation2023REPORTING1.0Countingfrom1to1002.0Simpleadditionandsubtraction3.0Multiplyinganddividingby10,100,1000Basicexercisequestions1.0Usingdecimalsandfractionsincalculations2.0Solvingproblemswithmorethanoneoperation3.0Handlinglargenumbers(over1000)Improveexerciseque