基数词讲解.doc

基数词Name:_（1） 基数词的构成及其说明1）112是独立的单词。即：one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve2)1319,多数在末尾加-teen, 但应注意13、15、18的拼写形式。例如：13thirteen 14fourteen 15fifteen 16sixteen17seventeen 18eighteen 19nineteen3)从2090整十位数，多数在词尾加-ty，但要注意20、30、40、50和80的拼法。例如：20twenty 30thirty 40forty50fifty 60sixty 70seventy80eighty 90ninety4)2199是由几十和几合起来构成，中间加连字符（-）。例如：21twenty-one 32thirty-two 55fifty-five 74seventy-four 86eighty-six 99ninety-nine5)101999等三位数中，十位数或个位数的前面加and。例如：101a(one)hundred and one230two hundred and thirty513five hundred and thirteen678six hundred and seventy999nine hundred and ninety-nine6) hundred, thousand, million与of连用数词hundred, thousand, million等的前面有其他数词，用作确定的数目时，不用复数形式。例如：three thousand三千（不能说：three thousands）five hundred五百（不能说：five hundreds）但是当hundred, thousand, million在用作不确定的数目时，则需用复数形式，并且往往后接of。例如：hundreds of people几百人hundreds of thousands of people几十万人millions of the locusts千百万只蝗虫巧学巧用有hundred等数词有s时有of, 没有s没of；数词前面加，没有s没of；前面无数词，有s也有of。I. 基数词的用法： 1. 基数词：表示数目的词称为基数词。我们所学过的基数词有：zero, one，two，three，four，five，six，seven，eight，nine，ten ，eleven，twelve等 2. 基数词的用法：（1）基数词可以表示物体的数量。如：three books 三本书 five boxes五个盒子 two cups of tea 两杯茶 ten pieces of bread 十片面包 （2）基数词可以表示钟点。如：8:00读作 eight oclock 9:00读作 nine oclock 11:00 读作 _ 12:00 读作_7:20顺读法： seven twenty 7:30顺读法： seven thirty 逆读法：twenty past seven 逆读法：half past seven 10:35 顺读法： ten thirty-five 9:45 顺读法：nine forty-five 逆读法：twenty-five to eleven 逆读法：fifteen to ten 6:15顺读法：_5:13顺读法：_ 逆读法：_ 逆读法：_ 6:55顺读法：_4:40顺读法：_ 逆读法：_ 逆读法：_*10分钟以内的时间，可以这样说“钟点数+o（英文字母o 的发音）+ 分钟” 。 例如：6:05six o five （3）基数词可表示年龄。如：How old is Tom? He is ten （years old）.How old are they? They are nine（years old）.How old is your sister? She is eleven（years old）.（4）基数词还可表示在几年级几班。英语中表达在几年级几班时通常班级在前，年级在后，班级和年级间要用逗号隔开。例如：Im in Class 2, Grade 4. 我在四年级二班。注意：Class和Grade后的数字既可以用阿拉伯数字，也可以用英语中的基数词表示，但基数词和名词的首字母要大写。例如：Class 4 = Class FourGrade 3 = Grade Three（5）基数词还可用于算式中。如：one + nine = ten twelve - seven = five three three = nine eight two = four （6）基数词还可以表示年份。如 1990 nineteen ninety, 1900 nineteen hundred, 894 eight ninety-four, 2013 two thousand and thirteen,1999 nineteen ninety-nine 2001 two thousand and one1986 nineteen eighty-six 1612 sixteen twelve1535 fifteen thirty-five 732 seven thirty-two【考题链接】1. What time is it? It is 11: 45 A. fifteen to twelve B. forty-five to eleven C. eleven to fifteen D. fifteen past twelve答案：A思路分析：考钟点的逆读法，表示分钟的数字大于30 用to，格式：分钟 to 时钟+1 2. Im in _.A. Grade 3, Class 2 B. Class 3, grade 2 C. Class Three, Grade Two答案：C思路分析：Class和Grade后的数字既可以用阿拉伯数字，也可以用英语中的基数词，但基数词和各词的首字母应大写。 3. “The year 1964” should be read “The year_”.A. ninety sixty-fourB. nineteen sixty-fourC. one thousand nine hundred and sixty-fourD. nineteen hundred and sixty-four答案：B练习( ) 1There are _ days in a year Athree hundred and sixty five Bthree hundred and sixty-five Cthree hundreds and sixty five Dthree hundreds and sixty-five( ) 2Danny lives in _ Aroom 404 BRoom 404 C404 room D404 Room( ) 3Jim is in _ Aclass one，grade six Bgrade one，class six CClass One，Grade Six DGrade One, Class Six( ) 4The bike cost me _ yuan Afive hundred forty Bfive hundreds fourty Cfive hundred and forty Dfive hundred fourty( ) 5My telephone number is _ Aeighty eight two forty four zero nine Beight eight two double four O nine Ceighty eight two forty-four zero nine Deight eight two four four zero nine( ) 6What time do you go to school I go to school at 7:15A. seven to fifteen B. fiveteen past sevenC. fifteen past seven D. fifteen to seven( ) 7What day is today? _ AJune BTuesday CIt is hot DIts fine( ) 8What time do you get up every day? Aseven past thirty Bthirty past seven Cthirty to seven Dhalf to seven( )