词汇与写作第六讲---数词和量词分解.ppt

Vocabulary and Writing The 6th Lesson 数词和量词 基数词 序数词 分数词 量词 基数词 表示数目的词。 最基本的基数词： One, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen, Twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety A hundred, a thousand, a million, a billion, a trillion 其他基数词构成法 1. 21-99：先说“几十”，再说“几”，中间要加连字符号 39 thirty-nine; 52 fifty-two; 83 eighty-three; 91 ninety-nine 2. 101-999：先说“几百”，再加 and，再加末尾两位数或末位数 375 three hundred and seventy-five 582 five hundred and eighty-two 819 eight hundred and nineteen 902 nine hundred and two 3. 1,000以上的词：先从后向前数，每三位数加一个逗号，用这个方法把数目分作若干段，再一段段的念。第一个逗号前的数为thousand，第二个逗号前的数为million，第三个逗号前的数为billion，第四个逗号前的数为trillion 4,007 four thousand and seven 8,021 eight thousand and twenty-one 13,849 thirteen thousand, eight hundred and forty-nine 631,562 six hundred and thirty-one thousand, five hundred and sixty-two 54,256,000 fifty-four million, two hundred and fifty-six thousand 970,000,000 nine hundred and seventy million 14,800,000,000 fourteen billion, eight hundred million 2,000,000,000,000 two trillion 基数词在句中的作用 1. 在句中可充当的成分 The river is about eighty miles long. Over 4,650,000 workers were involved in the strikes. There were millions of blooms. Three will be enough. I read four of her novels. The city has a population of three million. He was a little over five. Its population is nearly two million. You two take these seats. Have you got tickets for us three? 2. 基数词还可用于复数形式，表示“很大的数量” The boat cost hundreds of pounds. Thousands of people attended the meeting. Millions of people are at risk from the disease. They arrived in twos and threes. Tens of thousands of Thousands upon thousands of 3. 某些基数词的复数形式可以用在“in the （one’s）…”的结构中，表示： 年岁 He was a thinnish fellow in his forties. She is in her early (late) twenties. He died in his fifties. 年代 This took place in the 1950’s. He was working abroad in the 70’s. 4. 一些数学公式的读法： 7+4=11 Seven plus four is eleven. 12-5=7 Twelve minu