Unit 1 基数词 + 序数词完整梳理 2025-2026学年译林版英语七年级下册

译林版七年级下册 Unit1 基数词 + 序数词完整梳理 一、基数词(表示数量多少) 表1:0~19 基数词 数字 英文单词 数字 英文单词 数字 英文单词 0 zero 7 seven 14 fourteen 1 one 8 eight 15 fifteen 2 two 9 nine 16 sixteen 3 three 10 ten 17 seventeen 4 four 11 eleven 18 eighteen 5 five 12 twelve 19 nineteen 6 six 13 thirteen — — 备注:13~19以 `-teen` 结尾,重音在后。 表2:20~100 整十基数词 & 二十几示例 整十数字 英文 示例数字 英文书写 20 twenty 21 twenty-one 30 thirty 22 twenty-two 40 forty 23 twenty-three 50 fifty 24 twenty-four 60 sixty 25 twenty-five 70 seventy 26 twenty-six 80 eighty 27 twenty-seven 90 ninety 28 twenty-eight 100 one hundred 29 twenty-nine 备注:整十后缀 `-ty`;几十几中间加连字符 `-`。 大数书写规则 1. 三位数:百位和十位间英式加and 例:234 two hundred and thirty-four 2. 千位分级:每三位用逗号隔开 2,345 two thousand, three hundred and forty-five 3. 关键点:前面有具体数字,hundred/thousand 不加s;hundreds of 成百上千,模糊数量加s 二、序数词(表示顺序,第几;用于日期、楼层、名次) 常用基础序数词对照表 缩写 完整形式 缩写 完整形式 缩写 完整形式 1st first 10th tenth 19th nineteenth 2nd second 11th eleventh 20th twentieth 3rd third 12th twelfth 30th thirtieth 4th fourth 13th thirteenth 40th fortieth 5th fifth 14th fourteenth 50th fiftieth 6th sixth 15th fifteenth 60th sixtieth 7th seventh 16th sixteenth 70th seventieth 8th eighth 17th seventeenth 80th eightieth 9th ninth 18th eighteenth 90th ninetieth 序数词变形规则 1. 特殊记忆:1 first, 2 second, 3 third 2. 普通单词直接加th:four fourth 3. ve结尾变f+th:five fifth;twelve twelfth 4. ty整十:y变ie+th:twenty twentieth 5. 几十几只变个位:fifty-five fifty-fifth 6. 缩写:数字+末尾两字母 1st、2nd、3rd、4th 基础例句 1. 日期:on the first of October 2. 楼层:the eleventh floor 3. 名次:come first in the match 分层配套练习题 基础一:写出下列数字的英文基数词 1. 15 _ 2. 38 _ 3. 72 _ 4. 100 _ 5. 246 _ 6. 1359 _ 基础二:写出对应序数词与缩写 1. 五 _(_) 2. 十二 _(_) 3. 二十 _(_) 4. 九十九 _(_) 5. 一百零三 _(_) 提升三:单项选择 1. There are _ students in our class. A. forty-five B. forty five C. forty-fives 2. Monday is the _ day of a week. A. two B. second C. twice 3. We have _ books, not hundreds of books. A. two hundred B. two hundreds C. two hundreds of 4. My birthday is on _. A. June five B. fifth June C. the fifth of June 5. —How many days are there in September? —There are _. A. thirty B. thirtieth C. thirteen 提升四:用括号内词的正确形式填空 1. Today is my sister’s _ (nine) birthday. 2. There are _ (58) students in Grade Seven. 3. The _ (twelve) month of the year is December. 4. _ (hundred) of people come to the park every weekend. 5. This is his _ (one) English lesson. 拔高五:改错(划出错误并改正) 1. There are two hundreds birds in the tree. _ 2. Today is her twelve birthday. _ 3. My birthday is on July five. _ 4. Thirty nine boys are playing outside. _ 拔高六:英汉互译 1. 一年有十二个月,十二月是第十二个月份。 _ 2. 成百上千的孩子喜欢这个游戏。 _ 3. He is the first to get to school every morning. _ 4. Our classroom is on the third floor. _ 参考答案 基础一 1. fifteen 2. thirty-eight 3. seventy-two 4. one hundred 5. two hundred and forty-six 6. one thousand three hundred and fifty-nine 基础二 1. fifth (5th) 2. twelfth (12th) 3. twentieth (20th) 4. ninety-ninth (99th) 5. one hundred and third (103rd) 提升三 1.A 解析:几十几中间加连字符,无复数 2.B 解析:the+序数词,表示第几 3.A 解析:具体数字后hundred不加s 4.C 解析:日期结构 on the +序数词+of 月份 5.A 解析:表示数量用基数词thirty 提升四 1. ninth 2. fifty-eight 3. twelfth 4. Hundreds 5. first 拔高五 1. hundreds hundred 2. twelve twelfth 3. five the fifth 4. Thirty nine Thirty-nine 拔高六 1. There are twelve months in a year and December is the twelfth month. 2. Hundreds of children like this game. 3. 他每天早上第一个到校。 4. 我们的教室在三楼。 学科网(北京)股份有限公司 $