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专题5数词专题5┃数词┃考点直击┃在通常情况下,表示年级、班级、排、房间、课等的编号要用基数词,且基数词要在数词后,表示“年级”等名词的首字母要大写;若基数词用英语表示,其首字母也要大写。若要用序数词表示,则序数词必须加上the。如:LessonOne/thefirstlesson第1课,Room306306号房间,RowFour/thefourthrow第4排,ClassThree,GradeNine九年级三班1数词表示编号专题5┃数词2基数词的拼写1.0—12单独记。如:zero,one,two,three等。2.13—19词尾都是teen。如:fourteen,seventeen等,但13—thirteen,15—fifteen,18—eighteen需要特殊记。3.20,30,40等整数的基数词均以-ty结尾。如:20—twenty,30—thirty,40—forty,50—fifty,80—eighty等。4.“几十几”要加连字符号“-”。如:48—forty-eight,97—ninety-seven等。专题5┃数词5.“几百几十”或者“几百几十几”在百后加and。如:156—onehundredandfifty-six,509—fivehundredandnine等。6.四位数或者四位数以上的基数词书写时从右往左每三位加一个逗号,第一个逗号前为thousand(千),第二个逗号前为million(百万),第三个逗号前为billion(十亿)。如:3,610=threethousandsixhundredandten;94,295=ninety-fourthousandtwohundredandninety-five;274,350=twohundredandseventy-fourthousandthreehundredandfifty等。专题5┃数词3确数和概数的表达“基数词+hundred/thousand/million/billion”表示确定数目;表达不确定数目时,即数百、数千等时,要用“hundreds/thousands/millions/billionsof+名词复数”形式,前可加many,some,several等修饰。如:________________students五百名学生many/several________________students数千名学生fivehundredthousandsof专题5┃数词4以-ty结尾的基数词复数的意义从20至90以-ty结尾的基数词表示年代或岁数时,以复数形式出现。如:inthe1990s/inthe1990's在二十世纪九十年代inherforties在她四十多岁时5序数词的构成与功能序数词除用来表示编号外,还可用来表示事物的先后顺序,多与定冠词、物主代词或名词所有格连用。注意下列数词的拼写与转换:one—first,two—________,three—third,five—fifth;eight—eighth;nine—________,twelve—twelfth,forty—________secondninthfortieth专题5┃数词记忆口诀:基变序,有规律。词尾加上th。一二三,特殊记。词尾字母tdd,八减t,九减e。f要把ve替。ty把y变成i,记住th前有个e。6不定冠词a/an与序数词连用序数词除了与定冠词、物主代词或名词所有格等连用表示顺序外,还可与a/an连用,意为“再一,又一”,相当于another。如:Thentheyhadasecondchild—ason.然后他们又有了一个孩子——一个儿子。专题5┃数词7分数的构成以及当其作主语时谓语动词的单复数形式1.分数的一般构成:分子用基数词,分母用序数词;若分子大于1,分母加s。如:1/3—a(one)third,2/3—twothirds注意:1/2—onehalf或ahalf(但不说onesecond),3/4—threequarters/threefourths2.分数作主语时,谓语动词的单复数形式应由后面名词的数确定。后面的名词为可数名词复数时,谓语动词用复数形式;为不可数名词或可数名词单数时,谓语动词用单数形式。如:Threefifthsofthework________hardtofinish.五分之三的工作很难完成。is专题5┃数词Threefifthsofthestudentsinourclass________Leaguemembers.我们班五分之三的学生是共青团员。[注意]数词作主语时,谓语动词多使用单数形式。如:What'stwoand/plusthree?二加三等于几?8时间的表达法1.整点钟:基数词+o'clock2.非整点时间:顺读(先读点钟,再读分钟)或逆读(1)当分钟数≤30时,可用“分钟+past+点钟”表示。如:7:25twenty-fivepastseven(2)当分钟数>30时,可用“(60-分钟数)+to+(点钟+1)”表示。如:7:35twenty-fivetoeight[注意]15minutes=aquarter,30minutes=halfanhourare专题5┃数词9日期表达法其顺序为“月+日+年”,日和年之间需用逗号隔开。也可以用“日+月+年”来表示。如:August2nd,2003(2003年8月2日);10thMay,2003(2003年5月10日)10特殊短语的表达半小时—halfanhour,一天半—oneandahalfdays或one/adayandahalf,一两天—oneortwodays或onedayortwo,一次—once,两次—twice,三五次—threeorfivetimes专题5┃数词Ⅰ.单项选择1.[2013·新疆]Thereare________peopleinthezooonChildren'sDay.A.onehundredsB.twohundredsofC.hundredsofD.hundredof2.[2013·宿迁]________ofthecoats________madeofcotton.Theyfeelcomfortable.A.Two-thirds;isB.Two-thirds;areC.Two-third;isD.Two-third;areCB┃考点过关┃专题5┃数词3.[2013·湛江]—Whatdayisittoday?—It'sMonday,andit'smy________birthday.A.fifteenB.FifteenthC.thefifteenD.thefifteenth4.[2013·安顺]Tofinishthetask,we'vetriedthreetimes,andafterdinnerwe'lltry________time.A.thefourthB.afourthC.fourthD.Four5.[2013·天津]—WhereisClass________?—It'sonthe________floor.A.Six;thirdB.Sixth;thirdC.Six;threeD.sixth;threeBAB专题5┃数词Ⅱ.根据句意及提示,写出正确的单词1.Mycousinlivesonthe________(twenty)floorofthebuilding.Heusesalifttogoupanddown.2.Therearef________studentsinourclass,twentyboysandtwentygirls.3.Aq________isanotherwayofsaying15minutes.4.Abouttwo________(千)peoplelefttheirhometownbecauseoftheterriblesandstorm.5.—Howoftendoyougoswimminginsummer?—________(two)aweek.twentiethortyuarterthousandTwice专题5┃数词┃语法专练┃1.—We'llbebackforourschool's________anniversary(周年)ceremony(典礼).—Isee.Thatmeansyou'llhaveaget-togetherwithyourclassmatesin________years.A.fifteen;sevenB.fifteenth;sevenC.fifteen;seventhD.fifteenth;seventhB[解析]第一空强调顺序,应用序数词;第二空强调数目,应用基数词。专题5┃数词2.[2013·东营]OnFebruary25,2013,LiAn,aChinesedirector,wonthebestdirectoragain.Itishis________timetowinan“Oscar”.A.firstB.threeC.twiceD.second3.[2013·乌鲁木齐]Thenumberofthecarsinourneighborhoodisabouteight________,and________ofthemarenewcars.A.hundred;twothirdsB.hundred;twothirdC.hundreds;twothirdsD.hundreds;twothirdDA专题5┃数词4.Thisisthe________timein________daysthathehasdonethesamething.A.second;thirdB.two;threeC.two;thirdD.second;three5.Thewomandoesn'tlookherage.Ithinkshe'ssomewhere________.A.inherfortyB.inthefortiethC.inherfortiesD.infortiesDC[解析]几十多岁的表达为“in+one's+整十位数的基数词的复数形式”。专题5┃数词6.Nearly________oftheearth________coveredbysea.A.threefourth;isB.threefourths;isC.threefourth;areD.threefourths;areB[解析]表示分数时,分子用基数词,分母用序数词;当分子大于一时,分母的序数词要用复数。若分数作主语,谓语动词与of后的名词在数上保持一致。专题5┃数词7.[2012·临沂]Didyouknowthattheearthishometo________animals?A.millionB.millionsC.millionofD.millionsofD[解析]hundred,thousand,million等后面若有of,则要用复数形式且前面不能加具体数字,表示约数。专题5┃数词8.[2013·黄石]It'ssaidthat________ofthewateraroundtheworld________polluted.A.twothird;hasB.twothirds;haveC.twothird;areD.twothirds;is9.—Excuseme,sir.Here'sapackageforLinTao.Whichroomdoeshelivein?—________.A.308RoomB.Room308C.TheRoom308D.The308RoomDB专题5┃数词10.TheGreatPyramidisabout________high.A.144meterB.144-meterC.144-metersD.144metersD[解析]144metershigh在句中作表语;144-meter-high为“基数词+单数名词+形容词”构成的复合形容词,在句中作定语。专题5┃数词11.________percentof
本文标题:【夺分天天练】2014中考英语总复习 语法专题5 数词课件(含13年试题) 人教新目标版
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