数 词,基数词,序数词,基数词变序 数词的规则,表示先后顺序的词,表示数目大小的词,four fourth, six sixth, seven seventh, ten tenth, hundred hundredth, thousand thousandth, million millionth,eleven eleventh, thirteen thirteenth, fourteen fourteenth,数 词,基数词变序 数词的规则,去e再加th nine ninth 末尾有t只加h eight eighth 将ve改为f后再加th five fifth, twelve twelfth,特殊变化 one first, two second, three third,逢十的基数词，tyieth twenty twentieth, thirty thirtieth, forty fortieth, fifty fiftieth,几十几的基数词只变后面一个基数词 thirty-five thirty-fifth, ninety-eight ninety-eighth,数 词,数词的 用 法,序数词 前一般 要加the,He fared better in the second test. 他第二次考试颇有进步,Mike won (the) first prize in the speech contest. 迈克在演讲比赛中获得了第一名。,比较：The rich man has bought two cars. But he wants to buy a third one this week.,表示编号 the Twelfth Lesson = Lesson Twelve 第12课,表达“一两天/周/月/年” a week or two =one or two weeks一两周,表达“一个半” one /an hour and a half=one and a half hours一个半小时,数 词,数词的用法,分数表达法 1/5读作one fifth； 3/5读作three fifths; 1/4可读作a quarter,“数词+ - +名词”做定语 an eight-year boy 一个八岁的男孩； a five-minute walk 步行5分钟的路程 比较：a five minutes walk步行5分钟的路程,年代表示法 in the 1990s 或 in the 1990s 在20世纪90年代,表达“几十多岁” in her thirties在她三十多岁时,数 词,数词的用法,序数词(+名词)+ to do sth,James was the first to arrive.詹姆斯是第一个到达的。,Those recently employed will be the first to be dismissed.那些最近被雇佣的人将会先被解雇。,倍数表 达 法,This river is twice longer than that one. 这条河是那条河的两倍长。,This river is twice as long as that one.,This river is twice the length of that one.,数 词,数词的 用 法,与最高级连用表示“第几长/宽/高/” Guangzhou is the third largest city in China. 广州是中国的第三大城市。 the last表示“最不可能的” He is the last person to tell a lie.他是最不可能撒谎的人。 表达“某人第几次做某事” It was the first time he had been out with her alone.这是他第一次单独和她出去。,数 词,数词的 用 法,My accounts balance for the first time this year! 我的帐上今年第一次出现收支平衡！,At first he thought to tell her; then he changed his mind.他原来打算告诉她的，后来改变主意了。,Tom met Mary at a party, and it was love at first sight. 汤姆在聚会上认识了玛丽，两人一见钟情。,数 词,数词的 用 法,Firstly, she did not intend to marry at all; secondly, she meant to go on with her studies. 首先，她根本不打算结婚；其次，她打算继续学习。,A computer consists of thousands of components.电脑由成千上万个部件组成。,数 词,数词的 用 法,Hundreds of people were injured when the train went off the rails.火车出轨时，数百人受伤。,The library subscribes to scores of periodicals.图书馆订购了几十种期刊。,He planned to buy dozens of reference books.他计划买几十本参考书。,一、语法填空,1. (2020山东淄博摸底)The Mid-Autumn Festival is a harvest festival celebrated in China and usually falls in September or October, on the 15th day of the _ (eight) month of the Chinese lunar calendar.,指农历年中的第八个月，用序数词。,eighth,2. (2019河北唐山二模) As the _ (three) solar term in the lunar year, its name suggests the fact that animals sleeping in winter are awakened by spring thunder and that the earth begins to come back to life. 修饰名词solar term, 表示“第三”, 用序数词。 3. (2018福建福州)However, in the urban district of Beijing houses along hutongs still occupy one _ (three) of the total area, providing housing for half of the population. 指三分之一，故用序数词。,third,third,4. (2018山西孝义) What they learnt helped them make _ first airplane flight in 1903. 序数词表顺序时，其前要加定冠词the。 5. It was the third time one of his cars _ (go) up in flames. 由该句型中的It was可知，用过去完成时。,had gone,the,6. Osaka is the _ (two) largest city in Japan. 表示“第二大”要用序数词。 7. Yuri Gagarin became the first man _ (fly) in space. 在序数词后或受序数词修饰的名词之后，通常用不定式作定语。,second,to fly,Thank you !,