1、数词数词2022中考英语复习中考英语复习数词数词 表示数目和顺序的词叫数词。数词又分基数词和序数词,基数词表示数量,序数词表示顺序。100以内的以内的基数词如下表所示:基数词如下表所示:1101119201001 one11 eleven20 twenty2 two12 twelve30 thirty3 three13 thirteen40 forty4 four14 fourteen50 fifty5 five15 fifteen60 sixty6 six16 sixteen70 seventy7 seven17 seventeen80 eighty8 eight18 eighteen90
2、ninety9 nine19 nineteen100 one hundred10 ten 1.012各独立各独立例:zero 0;nine 9;twelve121.基数词2.1319以以-teen 结尾结尾例:一般 fourteen 14;sixteen 16 特殊 thirteen 13;fifteen 15;eighteen 183.2090整位数以整位数以-ty 结尾结尾例:twenty 20;thirty 30;forty40;fifty 50;eighty 804.两位数(几十几):两位数(几十几):整整十十数数+个位数个位数例:thirty-five 355.三位数(几百几十几):
3、三位数(几百几十几):.hundred+and+两位数两位数例:six hundred and sixty-six 6666.多位数:从右向左数起,每隔三位数加一个逗号,逗多位数:从右向左数起,每隔三位数加一个逗号,逗号前依次读作号前依次读作 thousand(千)、(千)、million(百万)、(百万)、billion(十亿),逗号中间按三位数读(十亿),逗号中间按三位数读【考点注意】thousands of百、千、百万、十亿的考点百、千、百万、十亿的考点1.hundredthousand millionbillion前有数字不加前有数字不加 2.用作名词时复数表示用作名词时复数表示“成成
4、上上”,后面必须要有后面必须要有 如如:五百五百 成百上千的成百上千的 ss+offive hundred 基数词不难记基数词不难记,找清规律很容易找清规律很容易,十二以内十二以内词各异词各异,十三数到十九十三数到十九,teen莫忘记;莫忘记;二十、三十二十、三十至九十至九十,尾巴要加尾巴要加ty;要说要说“几十几几十几”,中间中间“-”别丢弃;别丢弃;若说几百几十几若说几百几十几,百位十位用百位十位用and;以上用法要记住以上用法要记住,用时千万莫大意。用时千万莫大意。【100以内的基数词巧学妙记】1)一般来说,是由相应的基数词加词尾)一般来说,是由相应的基数词加词尾th构成。构成。2)下面
5、这些基数词在变为序数词时,有特殊的变化。)下面这些基数词在变为序数词时,有特殊的变化。one-first two-second three-third five-fifth eight-eighth nine-ninth twelve-twelfth 3)十位整数序数词的构成方法是将基数词的词)十位整数序数词的构成方法是将基数词的词y 变成变成i,然后在加,然后在加eth.twenty-twentieth thirty-thirtieth forty-fortieth ninety-ninetieth 4)两位或两位以上的基数词变为序数词时,仅将个位数变成序数词。)两位或两位以上的基数词变为序
6、数词时,仅将个位数变成序数词。twenty one-twenty-first thirty-five-thirty-fifth a hundred and fifty-three-a hundred and fifty-third 2序数词 一二三特殊记,结尾各是t,d,d,th从四起;八去t,九去e,f来把ve替;遇到y变ie;若是遇到几十几,只变个位就可以。【序数词巧学妙记】(1)序数词前要加定冠词序数词前要加定冠词the,若序数词前有形容词性物主代词或名词所有若序数词前有形容词性物主代词或名词所有格时省略格时省略the。例Bill is my first pen pal.比尔是我的第一个
7、笔友。(2)序数词前加序数词前加a/an表示表示“又一又一,再一再一”。Even though the Browns have three children,they still want a fourth one.尽管布朗夫妇已有三个孩子,可他们还想再要一个。【考点注意】Two thirds of her money was spent on clothes.3.分数分数a quarterthree quartersa halfone sixth three fourths four fifths例:1/6 3/4 4/5 1.分数的表达分数的表达:【记忆口诀】【记忆口诀】”子基母序,子1母
8、加s。“英语中常见表达:英语中常见表达:1/4 ;3/4 ;1/2 。2.分数的用法分数的用法“分数分数+of+限定词限定词+名词复数名词复数”作主语时作主语时,谓语动词应用谓语动词应用复数形式复数形式;“分数分数+of+限定词限定词+不可数名词不可数名词/名词单数名词单数”作主语时作主语时,谓语动词常用谓语动词常用单数形式单数形式。例1:4/5的男孩子喜欢车。Four fifths of the boys like cars.例2:她把2/3的钱花在了衣服上。3.次数次数一次 两次 三次 oncetwicethree times 4.倍数倍数两倍 三倍 as.as.twicethree ti
9、mes和和.一样一样例:He is his younger sister.(他和他妹妹一样兴奋)This room is that one(这个房间跟那个房间的两倍大)twice as big asas excited as5.the+序数词与序数词与a+序数词的区别序数词的区别 the+序数词序数词 意思为意思为 第几第几 a +序数词序数词 意思为意思为 再一次再一次 例:John failed the test twice.But he would like to have try.约翰考试失败了两次,他想再试一次。Hainan is island in China.海南是中国的第二大岛
10、。a thirdthe second1.表示年份:表示年份:例:2022 twenty twenty-two2.表示日期:表示日期:例:2021年11月8日:Nov.8th,20213.表示时刻:表示时刻:例:5:15 five fifteen或a quarter past five;8:30 eight thirty或half past eight;10:45 ten forty-five或a quarter to eleven.4.表示编号:表示编号:例:Room 1055.年代的表达年代的表达方式通常为“in+the+数词的复数数词的复数”。例:在20世纪80年代 in the 1980
11、s 6.“半半”的表达的表达:1/2 半小时 1.5小时 .7.在我在我30多岁时多岁时 .数词的用法数词的用法a halfhalf an hourone hour and a halfin my thirties Mr.Green is teacher in a middle school.In his (三十多岁),he went to Russia.He has lived Russia for about (一年半).In the school,of(总数)students about (两千).And about (五分之三)students are boys.(许多)boys li
12、ke playing basketball.Tom is a (十六岁的)student comes from (三年级四班).He often plays basketball (一周两次).Once The (第二十届)World Basketball Championship began the morning of May 25,2010 Moscow,Russia.there were (成千上万)people watching the game.But Tom didnt go to watch because he had to stay in (406室)with his classmates to study English.数词在语篇中的运用数词在语篇中的运用thirtiesone and a half years the numberistwo thousandthree fifthsA number of sixteen-year-old Class Three Grade Four twice a weektwentieth onin thousands of Room 406