数词专项复习

1.说出下列词的基数词和序数词12 _/_13 _/_20 _/_40 _/_23 _/_twelvetwelfth课前复习：thirteentwentiethtwenty fortiethfortytwenty-threetwenty-thirdthirteenth课前复习：1.If you go out at night,youll be able to see _ stars.A.thousands of B.thousand ofC.nine thousands of 2.Youve done it twice.Why not try _ time?A.three B.third C.a thirdAC 数词的应用数词的应用 1.表分数。表分数。口诀：分子基数词、分母序数词，分子基数词、分母序数词，分子大于分子大于1，分母加，分母加s。eg.1/3 2/3one third two thirds 3/5three fifths5/7five sevenths1/2a half1/4a quarter1)One third of the students _ girls.2)One third of the milk _mine.注意：areis（2010年无锡)Nearly _of the earth _covered by sea.A.three fourth;isB.three fourths;isC.three fourths;are2.表日期表日期 顺序：顺序：月，日，年月，日，年.eg.在在1949年10月1日 on October(the)1st,nineteen forty-nine3.表时间表时间1.顺读法：顺读法：2.倒读法：倒读法：three twenty-five1)(30分钟分钟)用用to：几点差几分几点差几分 3:35 4:55twenty-five to fourfive to five 3:25 注意：注意：3:15 3:45three fifteen a quarter past threethree forty-five a quarter to four4.表编号：5.表示小数：18.38 eighteen point three eight 21.49 twenty-one point four nine207房间：Room 207(two o seven)第五课：Lesson Five=the fifth lesson 6.两组与数词有关的介词短语：两组与数词有关的介词短语：a.in+the+数词的复数形式 表年代表年代 in the 1980sb.in+物主代词+数词的复数形式 在在20世纪世纪80年代年代在她在她30多岁时多岁时in her thirtiesMarys uncle went to France _.A.in his forties B.in his forty C.at his forrties 翻译下列词组：翻译下列词组：1.一个一个13岁的女孩岁的女孩2.一个一个4天的假期天的假期3.一年半一年半4.两个半小时两个半小时5.在她九岁生日时在她九岁生日时6.在十二世纪在十二世纪a 13-year-old girla 4-day holidaya year and a halfone and a half years on her ninth birthdayin the twelfth century实战演练实战演练