标题 | 小学英语语法大全:序数词的用法(详解) |
内容 | 序数词的用法是小学英语语法题中常考的题目之一,有些同学对序数词的用法总是运用不当,以至于考试的时候失分严重。序数词的用法其实是有规律可循的,只要掌握好英语序数词的用法,在考试中对小学英语语法题中序数词的用法部分就会得心应手。以下是高分网小编为大家整理的小学英语语法大全:序数词的用法(详解)篇,希望能帮到大家。 (1)基数词变序数词的规律:基变序,有规律。 一、二、三、特殊记,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 变成tie(twentieth)。 若是碰到几十几,只变个位就可以。(twenty-first)。 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 22nd twenty-second 29th twenty-ninth 30th thirtieth 31st thirty-first 40th fortieth 50th fiftieth 60th sixtieth 70th seventieth 80th eightieth 90th ninetieth 100th hundredth (2)序数词的用途 a.用来表示时间例如:2008 年2 月28 日可以表示为February 28th, 2007 b.用来表示顺序例如:He is always the first to come to school.他总是第一个来学校。 c.用来表示楼层例如:He lives on the fourth floor.他住在四楼。 以下是表示月份的单词,同学们要牢记: January, February, March, April, May, June, July, August, September, October, November, December, (3)数词的用法: 1)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 2)表示年月日: "年”用基数词,“日用序数词”。 例如:1949 年10 月1 日—写法: Oct.。1, 1949. 读做:Oct. (the ) first, nineteen forty-nine. 2009 年3 月28 日—写法: March 27, 2009. 读作: March, (the) twenty-seventh, two thousand and nine. 3)表示时间: 10:30 am. 读作:at half past ten in the morning 4)表示“加减乘除”: 15+2=? How much is fifteen plus two? 8-7=? How much is eight minus seven? 12×12=? How much is twelve times twelve? 81÷9=? How much is eighty-one divided by nine? 5)用数词表示分数时,分子用基数词,分母用序数词;如果分子大于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. 6)读小数时,数字只用基数词: 3.4 读作:three point four 0.2 读作zero point two |
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