数字的英文读法-(1)幻灯片课件.ppt

1、 1.基数词n英文是以每三位划分一个单位:thousand,million,billion,trillion。n如:134,256,366,906 n读作:one hundred(and)thirty-four billion,two hundred(and)fifty-six million,three hundred(and)sixty-six thousand,nine hundred(and)six.n(在美式英语中,往往省略hundred 后面的and)。2.序数词n 序数词中除first,second,third,其余都是在基数词末尾加上-th 构成,只有部分在拼写方法上略有变动。

2、nLesson Nine=the ninth lesson 第九课;nWorld War (World War Two)=the second world war 第二次世界大战等。n 但要注意在提及国王或女王时,只能用序数词,而不能用基数词。n如:Queen Elithabeth II 应读作:Queen Elithabeth the second,而不能读作Queen Elithabeth two。3.号码n电话号码,房间号,帐号,汽车牌号等按编号的顺序一个一个地读出,遇到“0”时读oh,相连的两个相同的可读作double。My office phone number is 268-806

3、4 extension 321.My account number is 38800685.电话号码n读电话号码首先要按照国家代码、区号、号码本身来分开,如86-0551-3837898,然后逐个数字读出。n3+4:3837898 读作three eight three,seven eight nigh eight;n4+4 28465258 读作two eight four six,five two five eight。n如果遇到两个或三个相连数字相同,可分别用double 和treble。n但开头三个数字相同,通常仍应该分开读,如:5553298 应读作five five five,th

4、ree two nine eight,而不是treble five,three two nine eight。而且运用double 或treble 时,仍应遵循上述数字分组规则,如:7733298 应读作double seven three,three two nine eight,而不是double seven double three two nine eight。门牌号n通常情况下,三位门牌号逐个读出,四位门牌号每两个数分一组。如:Classroom 305 读作:Classroom three-oh/zero-five;Room 2534 读作:Room twenty-five thi

5、rty-four。“0”的读法n0 可以读作zero,nought,null,nil,nothing,oh。nnil 多见于体育赛事,如:3:0 读作three nil 或 three to nothing。4.分数n分数的分子用基数词表示,分母用序数词表示。若分子大于1,分母用复数。n如:1/3,读作:one third;2/7 读作:two sevenths。n如果分子或分母数值较大,或在数学计算中,常常会用over 来读分数线,如:32/46 读作thirty-two over forty-six。n但要注意1/2,1/4 和3/4 分别读作:a(one)half,a(one)quart

6、er,three quarters。5.小数n小数是用数字来表示的,小数点后无论有多少位数也不要在中间插入逗点;小数点读作point;小数点后面的数字要一个一个地读出。9.45 读作：“nine point four five”,（但有时也会听到“nine point forty-five”的特例读法。）如果小数点前为0,读作nought 或zero。.6.比率、百分数n 比率的表示通常都用数字,有时亦可用文字。The ratios of 1 to 3 and 5 to 15 are the same.You have a fifty to fifty chance to win the ga

7、me.n百分数用percent或per cent表示,即%The price has been reduced by 20 percent(or 20%)since May.The number of visiting patients is 30 percent(or 30%)less than the same time last year.7.日期,年份的表示n在年的表示中,如果数字较小,或者新世纪初的几个年份,可以直接当作基数词读出,如:357 A.D.读作“three hundred fifty-seven A.D.”;n 2006 读作“two thousand(and)six”。

8、n数值较大时,习惯于两位一组读出,如:1980 读作“nineteen eighty”。7.日期,年份的表示 nMay 22,也写作May 22nd;nJuly 15，也写作July 15th;nAugust 1，也写作August 1st;n1949;n1804;n1700;n 2000;n 685 B.C.;n1960s(or 1960s)。8.时刻的表示n如果想表示刚好在某一个整点,如11:00,可以用“at 11 oclock sharp/on the hour/on the strike”。而12:00 也可读为“at noon”;00:00 为“at midnight”。n14:0

9、0：fourteen hundredn 9:15n11:26n5:30n12:00n14:15n24:00单位的表达 n23 feetn236 inchesnThis parcel weighs 3 pounds 5 ouncesn I bought a 4 feet by 5 feet rug.nThe temperature dropped to-22.nHis height is 178 cm.(or He is 178 cm tall.)nThe size of the box is six feet by four by three and two-thirds.货币 n$18.29

10、$15n C$268nJP￥10,000n William n Elizabeth 帝王第世 数学表达式的读法 n“读作plus或and;n“读作minus或from;n“读作times或multiplied by;n“读作divided by等。n 5813 Five plus eight is thirteen.n15-69 Fifteen minus six is nine.n 4520 Four times five is twenty.Four multiplied by five is twenty.n 824 Eight divided by two is four.数学表达式的

11、读法nAB A is greater than B.nAB A is greater than or equal to B.nAB A is less than B.nAB A is less than or equal to B.nAB A is not equal to B.nFive squared is twenty-five.nFive cubed is one hundred and twenty-five.nTwo to the fourth power is sixteen.nThe square(or second)root of sixteen is four.nThe c

12、ube(or third)root of twenty-seven is three.nLogic there exist for all pq p implies q/if p,then q pq p if and only if q/p is equivalent to q/p and q are equivalent 数学表达式的读法nSets xA x belongs to A x A x does not belong to A AB A is contained in B/A is a subset of B AB A contains B/B is a subset of A A

13、B A cap B/A meet B/A intersection B AB A cup B/A join B/A union B AB A minus B/the diference between A and B AB A cross B/the cartesian product of A and B 数学表达式的读法nLinear algebra x the norm(or modulus)of x OA OA/vector OA OA OA/the length of the segment OA A T A transpose/the transpose of A A 1 A inverse/the inverse of A 数学表达式的读法