小学英语数量词PPT课件

.,1,数词,.,2,什么是数词？,表示数目多少或顺序多少的词叫数词，数词分为基数词和序数词。表示数目多少的数词叫基数词，表示顺序的数词叫序数词。,.,3,基数词的构成与读法（1）0-12如：zeroonetwothreefourfivesixseveneightnineteneleventwelve(2)13-19都以-teen结尾，如：thirteenfourteenfifteensixteenseventeeneighteennineteen.(3)20-90十位数的整数都以-ty结尾，如:twentythirtyfortyfiftysixtyseventyeightyninety.,基数词的表示法,.,4,(4)21-99的两位数，十位与个位之间用连字符“-”。twenty-one,thirty-two,forty-three,fifty-four,sixty-five,seventy-six,eighty-seven,ninety-eight(5)101-999如：onehundredandone,twohundredandthirtyninehundredandninety-nine,.,5,写出下列数字。,twelve,14,fourteen,20,twenty,40,forty,90,ninety,19,nineteen,35,thirty-five,78,seventy-eight,111,onehundredandtwelve,234,twohundredandthirty-four,12,.,6,2.基数词表示时刻。（1）表示几点钟用基数词加oclock.例：7点读作sevenoclock5点读作fiveoclock(2)用”钟点数+分钟数“表示。例：7:10seventen9:40nineforty,.,7,(3)表示半点钟时，用“钟点数+thirty”或“half+past+钟点数”表示。例：2:30twothirty/halfpasttwo8:30eightythirty/halfpasteighty分钟数在30分钟以内的，用“分钟数+past+钟点数”表示，意为“几点过几分”。例：7:10tenpastseven10:15fifteenpastten/aquarterpastten,.,8,(5)分钟数超过30分钟的，用“（60-分钟数）+to+下一个钟点数”表示，意为“差几分到几点”。例：10:40twentytoeleven2:45fifteentothree/aquartertothree,.,9,练习：,用英语表示下列时间。10:05,tenpastfive,8:30,eightthirty,12:10,twelveten,1:15,onefifteen,5:47,thirteentosix,9:23,ninetwenty-three,3:51,ninetofour,11:49,eleventotwelve,6:00,sixoclock,7:22,seventwenty-two,.,10,3.表示货币,基数词+货币单位（yuan/dollar/pound)注意：人民币yuan(元）没有复数形式美元：dollardollars英镑：poundpounds例：5元-fiveyuan1美元-onedollar7美元-sevendollars1英镑-onepound9英镑-ninepounds,.,11,4.表示运算,例：3+4=7threeplusfourequalsse