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安徽专版语法专题（四）数词【中考考点】（1）数词的构成。（2）数词的表达方式和用法。考点一数词的构成1.基数词的构成（1）0—12单独记。如:zero,one,two,three。（2）13—19的词尾都是-teen。如:fourteen,seventeen,但13—thirteen,15—fifteen,18—eighteen需要特殊记。（3）20以上的整十的基数词均以-ty结尾。如:20—twenty,30—thirty,40—forty,50—fifty,80—eighty。（4）“几十几”要在整十数词后加个位数词,并在中间加连字符号“-”。如:48—forty-eight,97—ninety-seven。（5）“几百几十”或者“几百几十几”在“百”后加and。如:156—onehundredandfifty-six,509—fivehundredandnine。（6）四位数或者四位数以上的基数词的构成:从右往左每三位加一个逗号,第一个逗号读作thousand（千）,第二个逗号读作million（百万）,第三个逗号读作billion（十亿）,hundred后莫忘“and”。如:3,610—threethousandsixhundredandten,94,295—ninety-fourthousandtwohundredandninety-five,274,350—twohundredandseventy-fourthousandthreehundredandfifty。2.序数词的构成分类构成例词规则变化大多数序数词由“基数词+-th”构成four—fourth以y结尾的整十基数词变序数词,要变y为ie,再加-ththirty—thirtiethfifty—fiftieth20以上的非整十基数词变序数词,要将个位数改成序数词,其他位数仍用基数词thirty-one—thirty-first不规则变化少数序数词的构成属于特殊情况,需特殊记忆one—firsttwo—secondthree—thirdfive—fiftheight—eighthnine—ninthtwelve—twelfth【巧学妙记】基变序,有规律,一、二、三特殊记,first,second,third,从四开始加-th,八去t,九去e,五和十二变ve为f,再加-th,整十变y为ie,再加-th,若想表示第几十几,只变个位就可以。考点二数词的表达方式March12,20172017年3月12日onethird三分之一twothirds三分之二five（o’clock）5点钟fivepastseven7点5分twentytoeight7点40分thetallerofthetwo两个中较高的那个page62/thesixty-secondpage第62页inthe1970s在20世纪70年代inhisforties在他四十多岁时考点三数词的注意事项1.hundred,thousand,million,billion,dozen,score前有基数词修饰时,表示确数,其后不加-s,也不与of连用;表示概数时,则词尾加-s,并与of连用。Therearetwohundredpeopleinthehall.大厅里有200人。Millionsofpeopleintheworldaresendingandreceivinge-mailseveryday.每天,世界上有数百万人在收发电子邮件。2.序数词的前边加不定冠词,表示“再一,又一”。I’llhavetodoitasecondtime.我得再做一次。（已经做过一次）3.以下复合形容词中的名词要用单数形式。（1）基数词-名词（单数）atwo-hourdrive两小时的车程（2）基数词-名词（单数）-形容词an8-year-oldboy一个8岁的男孩a50-meter-deephole一个50米深的洞4.every与数词连用,表示时间的间隔。“every+基数词+可数名词复数”相当于“every+序数词+可数名词单数”。Hecomestoseehisuncleeverythreeweeks/everythirdweek.他每三周/每隔两周来看望他的叔叔。5.其他重要表达方式:（1）halfanhour半个小时（2）oneandahalfyears=oneyearandahalf一年半（3）inone’sthirties在某人30多岁时（区别:inthethirties在30年代）（4）twomorehours=anothertwohours再多两个小时对接中考专练Ⅰ.单项填空1.[2018·合肥一模]JiangZiyawasn’tverysuccessfuluntilinhis.A.seventyB.seventiethC.seventiesD.seventy-two2.[2018·和县期末]—Theairissofreshhere.—Ofcourse.ofthelandinthisareaiscoveredwithtreesandgrass.A.ThreefifthB.ThreefifthsC.FifththreeD.FifththirdsCB2.B考查分数的用法。分数的构成:分子用基数词,分母用序数词,分子大于1时,分母应该变成复数。故选B。对接中考专练3.[2018·阜阳一模]—Howmanypeoplearethereinthehall?—Abouttwopeoplearelisteningtothespeech.A.hundredofB.hundredsC.hundredD.hundredsof4.[2018·阜阳二模]oftheworld’sbooksandnewspapersarewritteninEnglish.A.ThirdquartersB.ThreequartersC.ThreequarterD.ThirdquarterCB3.C考查数词的用法。thousand,hundred等数词前如果有具体数字修饰,则用单数形式,且不能与of连用,后接名词复数。故选C。对接中考专练5.[2017·合肥模拟]ThisSaturdayismybirthday.Welcometomyparty!A.fourteenthB.thefourteenthC.fourteenD.thefourteen6.[2017·安庆模拟]Mr.Greenwrotemorethan20storiesinhis.A.fiveB.fiftiethC.fifthD.fifties7.[2017·淮北模拟]Onherbirthday,shegotaniPadasagiftfromherfather.A.twelveB.twelfthC.thetwelveD.thetwelfthAD5.A考查序数词的用法。表示“……岁生日”应该用序数词,故排除C、D;本空前有物主代词my,不再加定冠词the。故选A。B6.D“in+one’s+整十基数词的复数形式”表示“在某人几十多岁时”。故选D。对接中考专练8.[2017·芜湖模拟]Myfamilyaregoingtohaveapartytocelebratemygrandpa’sbirthday.A.ninetyB.ninetiesC.ninetiethD.ninetieths9.[2017·宿州模拟]Theenvironmentherebecomesbetterandbetter.birdsarecomingback.A.ThousandsofB.ThousandofC.ThousandsD.Thousand10.[2017·淮南模拟]—Whatdoyouthinkoftheenvironmenthere?—Wonderful!ofthelandcoveredwithtreesandgrass.A.Twofifths;isB.Twofifth;isC.Twofifths;areD.Twofifth;areCA9.A考查数词的用法。thousandsof意为“成千上万的”,表示概数。故选A。A对接中考专练Ⅱ.单词拼写根据首字母及汉语提示,完成下列单词的拼写,使句意明确,语言通顺。1.Pleaseturntopage5andlookatthes（第二）picture.2.It’sthef（五）timethatI’vebeentoAmerica.3.Therestaurantreceivesfiveh（百）customerseveryday.4.—Whattimeisit?—Itisaq（刻）pastfive.5.Hemadehisfirstmovieattheageoff（四十）.secondfifthhundredquarterforty对接中考专练6.Mr.Zhanglivesonthen（九）floor.7.Myparentswillhaveapartyformyt（第十二）birthday.8.Father’sDayisonthet（第三）SundayofJune.9.Todaywe’lllearnUnitE（八）.Areyouready?10.Theladybecameveryfamousinherf（五十）.ninthtwelfththirdEightfifties语法综合演练见Word资源语法专题04数词