英语中,分数、百分数如何表示,当它作主语时,谓语动词用单数还是复数?

一、小数(decimal)小数点读作point,小数点左边按整数的基数词(one,two,three ...)读,小数点右边依次用个位数的基数词读出.整数部分为零时,小数点可以省略不读.当小数大于1时,小数后面的名词用复数,小数小于1时,小数后面的名词用单数.1.小于"1"的小数小数点左边的零读做naught(英)或zero(美),也可不在小数点后遇到零时,可读做naught O zero,也可以读做字母"o"的音,例如:数字表示法0.4naught O zero point four; point four0.128naught O zero point one two eight; point one two eight0.305naught O zero point three o five; point three zero five 2.大于"1"的小数小数点左边的整数部分按整数读法读出.小数点右边的小数部分按个位基数词依次读出.在小数点后遇到零时可读做naught O zero,也可以读做字母"o"的音,例如:数字表示法5.02five point naught O zero two; five point o two8.004eight point naught naught O zero zero four; eight point o o four33.33thirty-three point three three 3.万位和亿位以上整数带小数汉语里有万位和亿位以上整数带小数的写法和读法.英语里没有相应的表示"万"或"亿"的单词.译成英语时,先将万理解为十个千,将亿理解为一百个百万.然后将小数点左边的整数部分和小数点右边的小数部分做相应的变化例如:数字表示法8.3万(83,000) eighty-three thousand723.64万(7,236,400) seven mil-lion,two hundred and thirty-six thousand,four hundred17.03亿(1,703,000,000) one point seven o three billion; one billion,seven hundred and three million 二、分数(fraction)英语中的分数和汉语中的分数表示法及读法没有很强的对应性,需要认真记忆.一般情况下,表示分数时,分子要用基数词,分母用序数词(first,second,third ...).如果分子大于1,分母必须用复数形式.1."1/2"或"一半"的表示方法,用one half或a half表示.例如:半英里one (a) half mile或half one (a) mile一个半小时an hour and a half或one and a half hours (hour要用复数形式) 2."1/4"的表示方法,用one (a) quarter表示.如果分子大于1,quarter用复数形式.例如:1/4 one (a) quarter 3/4three quarters3.如果分子大于1,分母要用序数词的复数形式.如果分数大于1,要用整数部分+ and + 分数表示,例如:1/3 one third或a third5/6 five sixths 8 3/5 eight and three fifths4.比较复杂的分数用over表示.分子(基数词)+ over + 分母(基数词).注意这里分子、分母全用基数词表示.例如:51/80 fifty-one over eighty77/232 seventy-seven over two hundred and thirty-two5.用"分子(基数词)+ (out) of + every + 分母(基数词)"表示.这里分子、分母也全用基数词表示.例如:1/7one of every seven5/9five out of every nine eg:An investigation showes that about two of every three students in this university are from China.一项调查表明这所大学大约有三分之二的学生来自中国.6.用"分子(基数词)+ in + 分母(基数词)"表示.这里分子、分母也全用基数词表示.例如:1/3 one in three5/6 five in sixeg:Only about one in five books was written for children ranged from seven to ten years old.只有大约五分之一的书是为七到十岁的儿童写的.7.用"表示减少意义的动词或词组+ 倍数"表示减少了n-1/n.例如:eg:The time for the whole journey is shortened 3 times.整个行程的时间缩短了三分之二(或缩短到原来的三分之一).8.当分数后面接名词时,如果分数表示的值大于1,名词用复数；如果小于1,名词用单数.3 3/5 kilograms 三又五分之三千克(读作three and three fifths kilograms)4/5 meter 五分之四米(读作four fifths meter)5/6 inch 六分之五英寸(读作five sixths inch) 三、百分数(per cent)百分号％读作percent (per cent),无复数形式,数词要用基数词,应用时常与by连用.例如:数字表示法6%six percent0.58%(naught) point five eight percent200%two hundred percent The output of petroleum went up by twenty percent.石油产量增长了20％.The price of food was reduced by ten percent.食品的价格下降了10％.The loss of electricity has been reduced to less than thirty percent.电的损耗减少到30％以下.注意:由"分数(或百分数)+ of + 名词"构成的名词词组作主语时,其后的动词形式依of词组中的名词类别而定.例如:Two thirds of the swampland has been reclaimed for farming.三分之二的沼泽地已经开垦为农田了.Over sixty percent of the doctors were women.超过百分之六十的医生是女性.当它作主语时,谓语动词用单数还是复数?看小数、分数或百分数后面的名词是单数还是复数,单数用单,复数用复