??eg.My phone number is 6887789. (3)标明时刻 eg.I watch CCTV News at seven o’clock every evening. (4)标明“…十”的数词的复数可以标明人的岁数或年代。 eg. He is in his early thirties.他有三十来岁(31—34岁)： This took place in the 1930s.这事发生在二十世纪三十年代; (5)表具体数字时,hundred,thousand,million用奇数。 eg. There are six hundred students in our grade. (6)表不断定的数字时,数词用复数。若带名词，再加of ，hundreds of(数百,成百上千 的),thousands of(数干,不计其数的),millions of(数百万) eg 。Hundreds of old people died of cold last winter. 基数词的构成 (1)1-20 one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,thirteen,fourteen,fifteen, sixteen,seventeen,eighteen,nineteen,twenty (2)21-99 先说“几十”，再说“几”，中心加连字符。 23→twenty-three,34→thirty-four, (3)101—999先说“几百”，再加and,再加末两位数或末位数; 586→five hundred and eighty-six,803→eight hundred and three (4)l,000以上,先从右往左数，每三位数加一个“,”,第一个“,”前为thousand.第二个“,”前为million,第三个“,”前为billion,然后一节一节地标明。 9,785→nine thousand, seven hundred and eighty-five 6,260,309→six million two hundred and sixty thousand three hundred and nine 750,000,000,000→seven hundred and fifty, billion 优质的教育课程开发是咱们张狂的寻求~ 咱们把线下优良教师的讲课内容,录制成课件 经过网络共享给群众 让学员用低于辅导班几倍的学费, 学到平等的常识和教师团队的效能 期望咱们微缺乏道的尽力可以改动传统教育的不对等 让人人都能获取到优质的教育