小学英语数词讲解与练习题

数词专练数词专练 数词是表示数量多少或顺序先后的词 分为基数词和序数词 数词是表示数量多少或顺序先后的词 分为基数词和序数词 一一 基数词基数词 1 表示数量多少的词是基数词 如 one two three 等 2 数词的构成 1 从 1 12 分别由从 one 到 twelve 12 个各不相同的词表示 one two three four five six seven eight nine ten eleven twelve 2 从 13 19 均以后缀 teen 结尾 thirteen fourteen fifteen sixteen seventeen eighteen nineteen 3 从 20 90 的整十数词均以后缀 ty 结尾 表示 几十几 时 个位和十位之间需加连字符 twenty thirty forty fifty sixty seventy eighty ninety 21 twenty one 32 thirty two 43 forty three 4 整百数由 1 9 加 hundred 构成 100 one a hundred 500 five hundred 5 整百数和整十数之间由 and 连接 十位与个位之间要加连字符 如果十位数为零 那就在百位和个位之间用 and 连接 101 one hundred and two 245 two hundred and forty five 6 1 000 以上的数 要用计数逗点 即从个位开始 每隔三位数加一逗点 第一个逗点处 是 thousand 千 第二逗点处是 million 百万 例如 1 000 a one thousand 4 596 four thousand five hundred and ninety six 10 000 ten thousand 18 261 eighteen thousand two hundred and sixty one 100 000 a one hundred thousand 766 132 seven hundred and sixty six thousand one hundred and thirty two Exercise 写出下列数字 12 14 20 40 90 19 400 600 35 78 305 678 二 二 序数词序数词 序数词表示排列顺序 如 first second third 等 构成规则 1 序数词第一 第二和第三为 first second 和 third 其他序数词的构成是在基数词后加 th 例如 six sixth seven seventh ten tenth four fourth 2 fifth 第五 eigth 第八 ninth 第九 和 twelfth 第十二 在拼法上有变化 first second third fourth fifth sixth seventh eighth ninth tenth twelfth thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth 3 二十 三十等基数词变为序数词时 要把 y 变成 ie 再加 th 例如 twenty twentieth forty fortieth twentieth thirtieth fortieth fiftieth sixtieth seventieth eightieth ninetieth 4 基数词几十几变成序数词时 表示几十的数词不变 只把表示几的基数词变成序数词 例如 twenty one twenty first forty five forty fifth 5 第一百 第一千 第一百万 第十亿都是在基数词后直接加 th 构成 例如 第一百 hundredth 第一千 thousandth 第一百万 millionth 第十亿 billionth 6 序数词的缩略形式是由阿拉伯数字加序数词的最后两个字母构成 例如 1st 2nd 3rd 4th 21st 32nd 40th 7 序数词前必须加定冠词 the The first time I came to China I liked it very much 我第一次来中国 我就非常喜欢这个国家 The first is always better than the second 第一总是比第二好 She will choose the third 她将选择第三 Exercise 把下列基数词改成序数词 one two three five nine eight fourteen twenty thirty five 三三 数词的应用数词的应用 1 时刻的表示法 时刻的表示法 A 表示几点钟用基数词加可以省略的 o clock 5 00 读作 five o clock 或 five B 半点的表示法 表示半点钟时 用 钟点数 thirty 或 half past 钟点数 表示 2 30 two thirty half past two 8 30 eighty thirty half past eighty C 几点几分 的表示法 1 用 钟点数 分钟数 表示 7 10 seven ten 9 40 nine forty 2 分钟数在 30 分钟以内的 用 分钟数 past 钟点数 表示 意为 几点过几分 7 10 ten past seven 10 15 fifteen past ten a quarter past ten 3 分钟数超过 30 分钟的 用 60 分钟数 to 下一个钟点数 表示 意为 差几分到 几点 10 40 twenty to eleven 2 45 fifteen to three a quarter to three Exercise 用英语表示下列时间用英语表示下列时间 10 05 8 30 12 10 1 15 5 47 9 23 3 51 11 49 6 00 7 22 2 编号的表示法 编号既可以用序数词 也可用基数词 Lesson Ten 第十课 page 50 第五十页 有的编号习惯上常用基数词 例如 Room 321 读作 three two one 321 号房间 Tel No 4013586 读作 Telephone number four 0 one three five eight six 电话号码 4013586 遇到相同的两位数可用 double 如 22 可读作 double two 四 课堂练习四 课堂练习 1 根据括号中的数字填写合适的序数词或基数词 写单词 1 Bill is 14 years old he is in Class 2 Grade 6 2 My birthday is on the 3 of March 3 September is the 9 month in a year 4 Which boy is thinner the 1 one or the 2 one 5 There are 55 students in our class 2 单项选择 1 There are days in a year A three hundred and sixty five B three hundred and sixty five C three hundreds and sixty five D three hundreds and sixty five 2 Danny lives in A room 404 B Room 404 C 404 room D 404 Room 3 Jim is in A class one grade six B grade one class six C Class One Grade Six D Grade One Class Six 4 The bike cost me yuan A five hundred forty B five hundreds fourty C five hundred and forty D five hundred fourty 5 My telephone number is A eighty eight two forty four zero nine B eight eight two double four O nine C eighty eight two forty four zero nine D eight eight two four four zero nine 6 Is there any food for us A ten B tenth C the tenth D the ten 7 Mary is girl A an 8 year old B 8 一 years old C the 8 years old D an 8 一 year old 8 What day is today A June B Tuesday C It is hot D It s fine 9 What s the date today A It s Saturday B It s July C It s fine D It s JuIy 15 10 What time do you get up every day A It s seven o clock B Seven o clock time C At seven D On seven 五五 课后作业课后作业 一 写出下列数字的英文表达 12 14 20 45 90 600 678 903 115 227 1002 1320 4200 63152 二 选择填空 1 Fifty plus A fourty is ninety B forty is ninety C thirty is ninety D fifty is ninety 2 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 3 December is and last month in a year A the twelveth B twelve C the twelfth D twelfth 4 The bike cost me yuan A five hundred forty B five hundreds fourty C five hundred and forty D five hundred fourty 5 There are two people in the meeting room A hundred B hundreds C hundreds of D hundred of 6 What is five and eight A Twelve B Thirteen C Fourteen D Fifteen 7 There are months in a year December is the month of the year A twelve twelve B twelve twelfth C twelfth twelve D twelve twelveth 8 What day is today A June B Tuesday C It is hot D It s fine 9 What s the date today A It s Saturday B It s July C It s fine D It s JuIy 15 10 What time do you get up every day A It s seven o clock B Seven o clock time C At seven D On seven 11 I bought shoes yesterday shoes are very beautiful A a The B a pair of The C the The D a pair The pair 12 He was soldier in the Second World War A a B an C the D 13 She can play and A the tennis the guitar B tennis guitar C the tennis guitar D tennis the guitar 14 I can see moon and clouds