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1 小学英语小学英语数词及专项训练数词及专项训练 一、数词的分类:一、数词的分类:基数词和序数词。基数用于表示数量多少,而基数词用于表示次序,常在日期中出现。 区别:区别:基数词前面没有“the” ;序数词前一定要有“the” 。 1、超过二十以上的两位数需要在个位和十位之间加上“-”。如:21 twenty-one 2、用基数词来修饰可数名词时,一定别忘了它的复数形式。如:十八个男孩 eighteen boys 3、用基数词修饰不可数名词时,如是复数,变它的量词为复数。如:两碗米饭 two bowls of rice 4、序数词一般加“th”,特殊的有:first, second, third, fifth, eighth, ninth, twelfth; 二十及二十以外的整十:twentieth, thirtieth, fortieth “第几十几”:前面整十不变,后面“几”改为序数词。如:88 eighty-eighth 巧记基数词和序数词: 1,2,3,特殊记,加 th 从 4 起; 8 少 t,9 去 e,逢 5 逢 12ve 变 f; 2090,y 要变 ie;若是几十几,前基后序别倒位. 二、数词的表示方法:二、数词的表示方法: 基数词序数词对照表 1 one first 1th 2 two second 2nd 3 three third 3rd 4 four fourth 4th 5 five fifth 5th 6 six sixth 6th 7 seven seventh 7th 8 eight eighth 8th 9 nine ninth 9th 10 ten tenth 10th 11 eleven eleventh 11th 12 twelve twelfth 12th 13 thirteen thirteenth 13th 14 fourteen fourteenth 14th 15 fifteen fifteenth 15th 16 sixteen sixteenth 16th 17 seventeen seventeenth 17th 18 eighteen eighteenth 18th 19 nineteen nineteenth 19th 20 twenty twentieth 20th 2 21 twenty-one twenty-first 21st 22 twenty-two twenty-second 22nd 23 twenty-three twenty-third 23rd 24 twenty-four twenty-fourth 24th 25 twenty-five twenty-fifth 25th 26 twenty-six twenty-sixth 26th 27 twenty-seven twenty-seventh 27th 28 twenty-eight twenty-eighth 28th 29 twenty-nine twenty-ninth 29th 30 thirty thirtieth 30th 40 forty fortieth 40th 50 fifty fiftieth 50th 60 sixty sixtieth 60th 70 seventy seventieth 70th 80 eighty eightieth 80th 90 ninety ninetieth 90th 100 one hundred one hundredth 100th 三、数词的用法三、数词的用法 1. 章节、页数的读法章节、页数的读法 第一章:the first chapter ; Chapter One 第二节:the second section ; Section Two 第三课:the third lesson ; Lesson Three 第 463 页:page four six three 第 2564 页:page two five six four 或 twenty-five sixty-four 注意:如果页码的数字较长,通常用基数词。 2. 房间、门牌、电话号码的读法房间、门牌、电话号码的读法 第 305 房间:Room three o(零)five 长安街 76 号:seventy-six Changan Street 电话号码:204-2244:telephone number two o(零) four two two(double two) four four 十一路公共汽车:Bus(No.) eleven 3. 年代、日期、时刻的读法年代、日期、时刻的读法 (1)年份是四位数字时,各分成二位来读, eg. 公元 1995 年:1995(=nineteen ninety-five) 3 (2)日期使用一般的序数词来读取 eg. 5 月 10 日:May 10th(=May tenth) (3)时刻通常用基数词来读 eg. 8 点 45 分:8: 45(=eight forty-five) (4)年代表示法: eg. 二十世纪九十年代:1990s nineteen nineties 4. hundred, thousand, million 用法:用法: hundred, thousand, million 前面有具体数字,要用单数形式,但如果它们后面有 of,那它们要用复数形式,同时,前 面不能再加具体的数目。 eg. two thousand 两千 thousands of 成千上万 hundreds of 成百上千 millions of 数以百万计 Thousands and thousands of people have visited the city. 成千上万的人参观了这座城市。 四、倍数、分数、小数、百分数的表示方法:四、倍数、分数、小数、百分数的表示方法: 1. 倍数:time(s) This room is three times as large as that one. 这个房间有那个房间三个大。 Three threes are nine. or Three times three is nine. 三三得九。 2. 分数: 分子用基数词表示,分母用序数词表示,分子为 2 以上时,分母(序数词)应变为复数。 三分之一,one third, a third; 五分之三,three fifths 数短语作主语时,谓语的数由 of 后面的名词来决定,名词为可数名词复数,则谓语用复数;名词为不可数名词, 谓语用单数。 A third of the land is covered by forests. Two thirds of the workers are working hard. 3. 小数: 小数点前的基数词与前面所讲的基数词读法完全相同,小数点后面则须将数字一一读出。 1.25 读作 one point two five 0.56 读作 naught point five six 或 zero point five six 4. 百分数: 百分号%读作 percent eg. 5% 读作 five percent 五、算式表达法:五、算式表达法: 1. 加法 A+B=C A plus B is C. or A and B is C. 2. 减法 AB=C A minus B is C. or B from A is C. 3. 乘法 AB=C A times B is C. or A multiplied by B is C. 4. 除法 AB=C A divided by B is C. 六、需注意的问题:六、需注意的问题: 1. 数词名词用连在一起作定语,后面名词不用复数。 eg. a four-year-old boy 2. 有些结构既有基数词又有序数词。 eg. the first three questions the last five minutes 3. 英语中有一些短语包含数词,不能从表面上理解它们的意义 4 eg. one and the only 唯一 be at one with 与 一致 be on all fours 匍匐;趴 Twos company, three is a crowd 二人成伴,三人不欢 one and the same 同一个;完全一样 for one 举个例子说 ten to one 十之八九 a thousand to one 十之八九 talk nineteen to the dozen 滔滔不绝 by twos and threes 三三两两 in ones and twos 三三两两 first and last 总共 first of all 首先 from the first 从一开始 练习:练习: 一、汉译英一、汉译英 1、十二个家庭 2、在上午九点 3、在下午 4:30 4、在七月 5、第三个孩子 6、第一课 7、六月一日 8、三点零五 9、十二个月 10、三十九美元 11、四分之一 12、五分之二 二二、单项选择、单项选择 1.The tree is tall. A. fourteen foots B. fourteen feet C. fourteen foot D. forty foot 2.Fifty plus . A. fourty is ninety B. forty is ninety C. thirty is ninety D. fifty is ninety 3.There are students in this school. A. four hundred fifty-two B. four hundreds fifty two C. four hundred and fifty-two D. four hundreds and fifty-two 4.My home is about away from the school. A. three hundred metre B. three hundreds metres C. three hundred metres D. three hundred metre 5.December is and last month in a year. A.the twelveth B.twelve C.the twelfth D.twelfth 6. of the teachers in the school are from colleges. A.Three quarters B.Two-third C.Two fifth D.Two-ninth 7.There were two world wars during century. A.the twenties B.the twentieth C.t
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