基数词序数词.docx
4页基数词序数词写一下英语 1 到 20 的英语1 2 3 4 56 7 8 9 1011 12 13 14 1516 17 18 19 2030 50 60 8090 100 1000序数词1st first 2nd second 3rd third 4th fourth 5th fifth 6th sixth 7th seventh 8th eighth 9th ninth 10th tenth 11th eleventh 12th twelfth 20th twentieth 21st twenty-first 30th thirtieth 31st thirty-first 40th fortieth 50th fiftieth 60th sixtieth70th seventieth 80th eightieth 90th ninetieth 100th hundredth一、二、三、特别记,词尾字母 t,d,d.(first, second, third) 八减 t, 九去 e,(eighth, ninth ), f 来把 ve 替 twelfth ).单词 ty 作结尾, ty 变为 tie(twentieth).假如遇到几十几,只变个位就能够。
twenty-first )2. 序数词的用途a. 用来表示时间比如: 2008 年 2 月 28 日能够表示为 February 28th, 2008b. 用来表示次序比如: He is always the first to come to school.他老是第一个来学校今日我是第一个到教室的 怎么说呢c. 用来表示楼层比如: He lives on the fourth floor.他住在四楼音乐教室在四楼怎么说以下是表示月份的单词,同学们要切记:January, February, March, April, May, June, July, August, September, October, November, December,数词的用法:表示事物的编号:如:the ninth part = part nine 第九部分the Fourth Lesson = Lesson Four第四课the sixth paragraph= paragraph six 第六段二、表示年代日: “年”用基数词,“日用序数词”比如:1949 年 10 月 1 日—写法: , 1949. 读做: Oct. (the ) first, nineteenforty-nine.2009 年 3 月 28 日—写法: March 27, 2009. 读作: March, (the)twenty-seventh, two thousand and nine.你的出诞辰期是三、表示时间:四、表示“加减乘除”:15+2= How much is fifteen plus two 8-7= How much is eight minus seven12×12= How much is twelve times twelve 81÷9= How much is eighty-one divided by nine五、用数词表示分数时, 分子用基数词,分母用序数词;假如分子大于 1,分母要用复数。
1/2: one-second 3/4 three-fourths, 2/5 two-fifths.记口诀: 分子基,分母序分子大于 1, 分母加 s.六、读小数时,数字只用基数词: 读作: three point four 读作 zeropoint two。





