英语人教版七年级上册中考总复习之----数词 .ppt

中考总复习之,-数词,沙湾县金沟河镇中心学校马福成,TeachingAims,1.Toreviseandlearntousethecardinalnumbers.2.Toreviseandlearntousetheordinalnumbers.3.Toreviseandlearntousethefractions.4.Toknowthenumeralsindailylives.,Groupwork,Talkaboutthespellingrulesofthecardinalnumbers(from1to99)ingroups.,Cardinalnumbersonetwothreefourfivesixseveneightnineteneleventwelvethirteenfourteenfifteensixteenseventeeneighteennineteentwentythirtyforty.ninetytwenty-onethirty-two.ninety-nine,一.基数词,1）从112分别由从one到twelve12个各不相同的词表示。2）从1319均以后缀-teen结尾。3）从2090的整十数词均以后缀-ty结尾。表示“几十几”时，个位和十位之间需加连字符，如twenty-one,thirty-two,forty-three等。,Howtowriteandreadthefollowingnumbers,231233,2334,230,000,twenty-three,onehundredandtwenty-three,threethousandtwohundredandtwenty-three,fourmilliontwohundredandthirtythousand,数字的写法和读法：,十位与个位之间要加连字符“-”；百位和十位之间要加and；三位数以上的数，从个位往前数，每三位数加一个逗号“，”，从后往前数的第一个逗号代表thousand,第二个逗号代表million,注意这几个词不能用复数形式，后也不能加and。,2230000,thousand,million,Note：hundred,thousand,million的用法,1)表示具体、准确的数目时，hundred,thousand,million等数词后不能加-s,如:fivehundred,sixthousand,sevenmillion。,2)当hundred,thousand等数词与of连用，表示不具体、不准确的数目时，词尾须加-s。如：thousandsofstudents,millionsoftrees.,Exercises,1.Choosethebestanswer.1).Thereare_daysinayear.A.threehundredssixty-fiveB.threehundredsandsixty-fiveC.threehundredandsixty-fiveD.threehundredandsixtyfive2)._peoplevisitthismuseumeveryday.A.HundredB.HundredsC.HundredofD.Hundredsof3).Therearetwo_peopleinthemeetingroom.A.hundredB.hundredsC.hundredsofD.hundredof4).Everyyear_watchNBAonTV.A.millionpeopleB.millionsofpeopleC.millionspeopleD.millionofpeople2.Translate.十四十九四十九十九十九二百,C,D,A,B,fourteen,nineteen,forty,ninety,ninety-nine,twohundred,Groupwork,Discussthechangingrulesoftheordinalnumbersingroups.,二.序数词,1）不规则变化，记住1-3的序数词2）其余在词尾加“th”,基数词变序数词顺口溜：一二三要全变,其它后面th添.八去t九去e,以y结尾改ie.five,twelve两兄弟,ve要用f替.若是遇到几十几,只变个位就可以.,(firstsecondthird),（fifth，eighth，ninth，twelfth，twentieththirty-first）,Exercises,1.Translate.第九第四十第五第二十第九十九第十九第十四2.1).Thereare_monthsinayear.Decemberisthe_monthoftheyear.A.twelve;twelveB.twelve;twelfthC.twelfth;twelveD.twelve;twelveth2).Sundayisthe_dayoftheweek.A.seventhB.firstC.secondD.third,ninth,fortieth,fifth,twentieth,nineteenth,fourteenth,ninety-ninth,B,B,生活中的数字,（一）表示事物的编号基数词放到名词的后边,该名词一般要大写；序数词放到名词的前面，加定冠词。第一课Lesson1/thefirstlesson（二）“几日”用序数词，前要加定冠词。如：5月2日读作：Maythesecond（三）时间的表达6:007:308:45,(sixoclock),(seventhirtythirtypastsevenhalfpastseven),(eightforty-fiveaquartertonine),（三）分数(fraction)的表达法,表示分数时，分子用基数，分母用序数，分子大于1，分母用复数。分数修饰名词时，后用of短语。,threesevenths,(a/onehalfonequarter),1/21/4怎么表示?,oneseventh,Exercises,1).About_ofthebooksinourschoollibraryarewritteninChinese.A.fourfifthB.fourfifthsC.fourthfifthsD.fourthsfifth2)._ofthestudentsaregirlsinourclass.A.TwothreeB.TwothreesC.TwothirdsD.Secondthree3).Tomorrowistheboys_birthday.A.tenthB.thirteenC.tenD.thethirteenth4).Nowits_.Itstimetogohome.A.fortytofiveB.fourteentofiveC.ninthD.twoquarterspastfive5)Pleaseturnto_,readthewordsandsentences.A.pagethirtyB.thethirtypageC.PagethirtiethD.thethirtiethpage6)._(四分之三)oftheworldsbooksandnewspapersarewritten