资源简介 数 词数词的分类:分为基数词和序数词;基数词: 表示“数量”序数词:表示“顺序”,回答“第几”的问题基数词变序数词规则:基数词 序数词 基数词 序数词 基数词 序数词one first ( 1st ) eleven eleventh ( 11th )two second ( 2nd ) twelve twelfth ( 12th ) twenty twentieth ( 20th )three third ( 3rd ) thirteen thirteenth ( 13th ) thirty thirtieth ( 30th )four fourth ( 4th ) fourteen fourteenth ( 14th ) forty fortieth ( 40th )five fifth ( 5th ) fifteen fifteenth ( 15th ) fifty fiftieth ( 50th )six sixth ( 6th ) sixteen sixteenth ( 16th ) sixty sixtieth ( 60th )seven seventh ( 7th ) seventeen seventeenth (17th ) seventy seventieth (70th )eight eighth ( 8th ) eighteen eighteenth ( 18th ) eighty eightieth ( 80th )nine ninth ( 9th ) nineteen nineteenth ( 19th ) ninety ninetieth ( 90th )ten tenth ( 10th ) ninety-one ninety-first ( 91st )口诀: 一二三,特殊记,八去t,九去e,ve要用f替,ty变y为ie,后加th别忘记,若是遇上几十几,只变个位就可以。基数词的用法:具体的数字表达:具体的几百,几千,百万: 基数词+hundred /thousand/million,一定不能加s例如: one hundred two hundred不具体的数字表达(一定有s):数以百计的 hundreds of 数以千计的 thousands of次数/倍数表达方法一次/倍: once 两次/倍: twice 三次/倍以上: 基数词+times如:five times五次/倍时间的表达顺读法:(从左往右,读两组数字)7:13 seven thirteen逆读法:从右往左读30分钟之前 ,用past (超过);7:13 thirteen past seven30 分钟之后,用to (差): 小时+1 ; 分钟用60-分钟 (换算成几点差几分)7:55 five to eight其他:半 点 half past 6:30 half past six15分钟 a quarter 7:15 a quarter past seven其它表达in the+整十年份的复数形式”, 在几世纪几十年代 ;如:in the 1970s/1970's 在20世纪70年代at the age of+基数词, 在……岁时”如:at the age of ten 在十岁时in one's+整十基数词的复数形式: 在某人几十多岁时如:in his thirties 在他30多岁时序数词的用法:序数词表示特指,前面要用定冠词theThe year 2000 is the first year of the 21st century.2000年是21世纪的第一个年头。序数词前有物主代词或其他修饰语时不再用任何冠词。I spent my first five years of childhood in the countryside.我童年时期的前五年是在农村度过的。年份用基数词,日期用序数词,如:2024年3月8日读作 March(the) eighth,2024the eighth of March,2024。(习惯写作:March 8th/8,2024)编号的表达法:(注意用基数词时,首字母要大写)如:the tenth lesson=Lesson Ten第10课;the fiftieth page=Page 50第50页。基数词-单数名词- 形容词,是一个复合形容词,后面要加复数;如:five years old 五岁大 five-year-old 五岁的名词 展开更多...... 收起↑ 资源预览