专题3 数词四大要点归纳（讲义）-河南省2026年对口升学一轮复习《英语知识点清单》（原卷版+解析版）

编写说明：河南省2026年对口升学一轮复习《英语知识点清单》，依据《中等职业学校英语课程标准》（2020年版），省编复习指导和历年真题编写。本资料将高考必备知识进行科学划分，系统总结归纳知识点，全面梳理高考题型。本清单共三大部分：第一部分是按照基础语法知识点编写的语法知识清单，第二部分是针对课程标准和高考真题中高频词汇和表达的语言知识清单，第三部分是依据各个高考题型编写的题型技巧清单。每份资料均配备配套讲义、课件和练习题。 本专题是河南省2026年对口升学一轮复习《英语知识点清单》中语法知识清单的第3个专题，内容为数词。 2026年河南省对口升学一轮复习 英语语法知识清单 专题3 数词（讲+练） ( 【考点解读】 近5年河南省对口升学考试真题选择填空中，出现了1道题，涉及序数词１道。在之前的真题中涉及数词共3道，其中序数词2道，基数词1道。由此可知，数词考查频率较低。 ) 【知识点清单一】1-100的基数词与序数词 【要点精讲】 基数词表示数目和数量，序数词表示顺序。需要掌握的基础基数词和序数词1-100。 数字 基数词 数字（序数形式） 序数词 数字 基数词 数字（序数形式） 序数词 1 one 1st first 51 fifty - one 51th fifty - first 2 two 2nd second 52 fifty - two 52th fifty - second 3 three 3rd third 53 fifty - three 53th fifty - third 4 four 4th fourth 54 fifty - four 54th fifty - fourth 5 five 5th fifth 55 fifty - five 55th fifty - fifth 6 six 6th sixth 56 fifty - six 56th fifty - sixth 7 seven 7th seventh 57 fifty - seven 57th fifty - seventh 8 eight 8th eighth 58 fifty - eight 58th fifty - eighth 9 nine 9th ninth 59 fifty - nine 59th fifty - ninth 10 ten 10th tenth 60 sixty 60th sixtieth 11 eleven 11th eleventh 61 sixty - one 61th sixty - first 12 twelve 12th twelfth 62 sixty - two 62th sixty - second 13 thirteen 13th thirteenth 63 sixty - three 63th sixty - third 14 fourteen 14th fourteenth 64 sixty - four 64th sixty - fourth 15 fifteen 15th fifteenth 65 sixty - five 65th sixty - fifth 16 sixteen 16th sixteenth 66 sixty - six 66th sixty - sixth 17 seventeen 17th seventeenth 67 sixty - seven 67th sixty - seventh 18 eighteen 18th eighteenth 68 sixty - eight 68th sixty - eighth 19 nineteen 19th nineteenth 69 sixty - nine 69th sixty - ninth 20 twenty 20th twentieth 70 seventy 70th seventieth 21 twenty - one 21th twenty - first 71 seventy - one 71th seventy - first 22 twenty - two 22th twenty - second 72 seventy - two 72th seventy - second 23 twenty - three 23th twenty - third 73 seventy - three 73th seventy - third 24 twenty - four 24th twenty - fourth 74 seventy - four 74th seventy - fourth 25 twenty - five 25th twenty - fifth 75 seventy - five 75th seventy - fifth 26 twenty - six 26th twenty - sixth 76 seventy - six 76th seventy - sixth 27 twenty - seven 27th twenty - seventh 77 seventy - seven 77th seventy - seventh 28 twenty - eight 28th twenty - eighth 78 seventy - eight 78th seventy - eighth 29 twenty - nine 29th twenty - ninth 79 seventy - nine 79th seventy - ninth 30 thirty 30th thirtieth 80 eighty 80th eightieth 31 thirty - one 31th thirty - first 81 eighty - one 81th eighty - first 32 thirty - two 32th thirty - second 82 eighty - two 82th eighty - second 33 thirty - three 33th thirty - third 83 eighty - three 83th eighty - third 34 thirty - four 34th thirty - fourth 84 eighty - four 84th eighty - fourth 35 thirty - five 35th thirty - fifth 85 eighty - five 85th eighty - fifth 36 thirty - six 36th thirty - sixth 86 eighty - six 86th eighty - sixth 37 thirty - seven 37th thirty - seventh 87 eighty - seven 87th eighty - seventh 38 thirty - eight 38th thirty - eighth 88 eighty - eight 88th eighty - eighth 39 thirty - nine 39th thirty - ninth 89 eighty - nine 89th eighty - ninth 40 forty 40th fortieth 90 ninety 90th ninetieth 41 forty - one 41th forty - first 91 ninety - one 91th ninety - first 42 forty - two 42th forty - second 92 ninety - two 92th ninety - second 43 forty - three 43th forty - third 93 ninety - three 93th ninety - third 44 forty - four 44th forty - fourth 94 ninety - four 94th ninety - fourth 45 forty - five 45th forty - fifth 95 ninety - five 95th ninety - fifth 46 forty - six 46th forty - sixth 96 ninety - six 96th ninety - sixth 47 forty - seven 47th forty - seventh 97 ninety - seven 97th ninety - seventh 48 forty - eight 48th forty - eighth 98 ninety - eight 98th ninety - eighth 49 forty - nine 49th forty - ninth 99 ninety - nine 99th ninety - ninth 50 fifty 50th fiftieth 100 one hundred 100th one hundredth 【即时训练】 1.— How many languages can you speak? — I can speak ______. English, Chinese and a little French. A. two B. second C. three D. third 2.— Which day is the school's open - day this month? — It's on the ______ day. A. twelve B. twelfth C. twelfths D. twelveth 3.— Which position did your team get in the basketball tournament? — We got the ______ place. A. eight B. eighth C. eights D. eightth 4.Our school's anniversary celebration will be held on the ______ of next month. A. twenty B. twentieth C. twentyth D. twentys 5.— How many students in your class were late today? — ______ students were late. They all had different reasons. A. Seven B. Seventh C. The seven D. The seventh 【知识点清单二】其它数词及用法 基数词单位 示例 示例（复数表示约数） hundred 159（one hundred and fifty-nine)；600（six hundred） hundreds of（成百上千的） thousand 3000（three thousand） thousands of（成千上万的） million 5000,000（five million） millions of（数以百万计的） billion 2000,000,000（two billion） billions of（数十亿的） dozen two dozen eggs（两打鸡蛋） dozens of books（许多书） score three score people（六十人） scores of birds（大量鸟） 【即时训练】 1.—How many students attended the vocational skills competition last month? —There were exactly ______ participants from different majors. A. two hundred B. two hundreds C. hundred of D. hundreds 2.According to the textbook, ______ years ago, this area was a bustling trading port. A. three thousand of B. three thousands C. thousand of D. thousands of 3.Every summer, ______ tourists visit the coastal city known for its beautiful beaches and seafood. A. million of B. millions of C. five million of D. five millions 4.In autumn, ______ birds migrate southward to warmer regions. A. billion B. billions C. billion of D. billions of 5.In the cooking class, each student was given ______ strawberries to make desserts. A. one dozen B. one dozens C. one dozen of D. dozens of 6.The local farmer raised ______ sheep on his vast farmland last year. A. three score B. three scores C. score of D. scores of 【知识点清单三】数词的实际应用 场合 示例 表达时刻 整点+分钟 8：15（eight fifteen） 分钟+past+整点（≤30分钟) 7:16（sixteen past seven） 差额分钟+to+整点（>30分钟） 11:45（fifteen/a quarter to twelve） 表达年份 1996（nineteen ninety-six） 2021（two thousand and twenty- one或twenty twenty-one） 表达日期 2021.10.10（October the tenth, two thousand and twenty- one） 表达世纪和年代 the 1980s或the 1980’s（20世纪80年代）；in the 2020s（在21世纪20年代） 表达年龄 基数词+year(s)+old I am 18 years old when I start to live on my own. （我十八岁开始独自生活。） 基数词-year-old复合形容词 He is an eight-year-old boy. （他是一个八岁的小男孩。） in one’s +整十基数词的复数形式 She is in her fifties. （她五十多岁。） at the age of +基数词 He started to learn the piano at the age of seven. （他七岁时开始学习弹钢琴。） 表达分数 分子用基数词，分母用序数词，若是分子大于1时，分母加s， 1/2（one-second），1/4（one-fourth），2/5（two-fifths），4/7（four-sevenths） 表达小数 小数点前的基数词按照基数词读法；小数点读作point；小数点后则需将数字一一读出 603.09（six hundred and three point zero nine） 表达百分数 百分数中的%读作percent，没有复数形式 15%（15 percent） 表达次数和倍数 once（一次），twice（两倍、两次），three times（三倍、三次） 表达编号 Lesson Three / the third lesson（第3课） 【即时训练】 1.— What time does the morning reading start? — It begins at ______. Don't be late! A. seven to thirty B. half past seven C. thirty-five to eight D. quarter to eight 2.The first commercially successful smartphone, the iPhone, was invented in ______. A. eighteen ninety B. 2000s C. seventeen ninety-five D. 2007 3.Our school's annual art festival will be held on ______. Remember to come and enjoy the show! A. May 15th, 2024​ B. the fifteenth of May, twenty and twenty-four​ C. May fifteen, two thousand twenty-four​ D. the fifteen of May, two thousand and twenty-four 4.The Internet became popular among the public in ______, revolutionizing information access. A. the 1990​ B. 1990s​ C. the 1990s’​ D. the 1990s 5.______ girl won the first prize in the national drawing competition. A. A ten-year-old​ B. A ten-years-old​ C. Ten years old​ D. Ten-year old 6.About ______ of the students in our class prefer online learning. A. two-third​ B. two-thirds​ C. second-three​ D. seconds-three 7.The price of this new calculator is ______ yuan. It’s very affordable. A. thirty point five​ B. thirty-five point zero​ C. thirty-five point​ D. thirty and five point 8.The discount on winter clothes reaches ______ during the end-of-season sale. A. thirty percents B. thirty percent​ C. thirtieth percent​ D. thirtieth percents 9.I’ve been to the city library ______ this week. It’s my favorite study spot. A. two time​ B. twice times​ C. twice​ D. 2nd time 10.We will start learning the ______ lesson next week. It's about cultural differences. A. nine B. ninth C. nines D. nineth 【知识点清单四】数词的句法功能 句法功能 示例 作主语 基数词 Three are enough for this game.（三个人参加这个游戏就够了。） 序数词 The second is always remembered.（第二名总是会被记住。） 作宾语 基数词 I need five to finish this task.（我完成这项任务需要五个。） 序数词 I like the third best.（我最喜欢第三个。） 作表语 基数词 The number of students in this class is forty.（这个班的学生人数是四十。） 序数词 She is the first in the race.（她在比赛中是第一名。） 作定语 基数词 There are six books on the table.（桌子上有六本书。） 序数词 He lives on the fifth floor.（他住在五楼。） 【即时训练】 1.— How many people are needed for the group project? — ______ are enough to complete it efficiently. A. Five B. Fifth C. The five one D. The fifth 2.— Who of you three will be in charge of the second - stage plan? — ______ will take on this important responsibility. A. The third B. The three of you C. Third D. Three 3.The teacher asked us to collect ______ for the environmental protection project. A. Ten samples B. Tenth samples C. The ten sample D. The tenth samples 4.— What's the total number of participants in the workshop? — The number of participants is ______. A. fifties B. fifty C. the fifty D. the fiftieth 5.— What's your place in the singing competition? — I am ______ in the final round. A. the second B. two C. the 2th D. the two 6.— How many computers are there in the computer lab? — There are ______ computers ready for students' use. A. eight B. eighth C. the eight D. the eighth 7.We will have a meeting in the ______ conference room tomorrow. A. fiveth B. five C. fifth D. five 8.— How many clubs are there in our school? — There are ______ clubs in total, and I joined the ______ one I liked best. A. twelve; third B. twelfth; three C. the twelve; the third D. the twelfth; the three 9.— Which room is the English speech contest held in? — It’s in Room ______, on the ______ floor of the teaching building. A. 502; fifth B. 502; five C. five - zero - two; five D. fifth - zero - two; fifth 10.My father bought me ______ storybooks, and the ______ one is about a brave boy. A. three; third B. third; three C. the three; the third D. the third; the three 原创精品资源学科网独家享有版权，侵权必究！ 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $$ 编写说明：河南省2026年对口升学一轮复习《英语知识点清单》，依据《中等职业学校英语课程标准》（2020年版），省编复习指导和历年真题编写。本资料将高考必备知识进行科学划分，系统总结归纳知识点，全面梳理高考题型。本清单共三大部分：第一部分是按照基础语法知识点编写的语法知识清单，第二部分是针对课程标准和高考真题中高频词汇和表达的语言知识清单，第三部分是依据各个高考题型编写的题型技巧清单。每份资料均配备配套讲义、课件和练习题。 本专题是河南省2026年对口升学一轮复习《英语知识点清单》中语法知识清单的第3个专题，内容为数词。 2026年河南省对口升学一轮复习 英语语法知识清单 专题3 数词（讲+练） ( 【考点解读】 近5年河南省对口升学考试真题选择填空中，出现了1道题，涉及序数词１道。在之前的真题中涉及数词共3道，其中序数词2道，基数词1道。由此可知，数词考查频率较低。 ) 【知识点清单一】1-100的基数词与序数词 【要点精讲】 基数词表示数目和数量，序数词表示顺序。需要掌握的基础基数词和序数词1-100。 数字 基数词 数字（序数形式） 序数词 数字 基数词 数字（序数形式） 序数词 1 one 1st first 51 fifty - one 51th fifty - first 2 two 2nd second 52 fifty - two 52th fifty - second 3 three 3rd third 53 fifty - three 53th fifty - third 4 four 4th fourth 54 fifty - four 54th fifty - fourth 5 five 5th fifth 55 fifty - five 55th fifty - fifth 6 six 6th sixth 56 fifty - six 56th fifty - sixth 7 seven 7th seventh 57 fifty - seven 57th fifty - seventh 8 eight 8th eighth 58 fifty - eight 58th fifty - eighth 9 nine 9th ninth 59 fifty - nine 59th fifty - ninth 10 ten 10th tenth 60 sixty 60th sixtieth 11 eleven 11th eleventh 61 sixty - one 61th sixty - first 12 twelve 12th twelfth 62 sixty - two 62th sixty - second 13 thirteen 13th thirteenth 63 sixty - three 63th sixty - third 14 fourteen 14th fourteenth 64 sixty - four 64th sixty - fourth 15 fifteen 15th fifteenth 65 sixty - five 65th sixty - fifth 16 sixteen 16th sixteenth 66 sixty - six 66th sixty - sixth 17 seventeen 17th seventeenth 67 sixty - seven 67th sixty - seventh 18 eighteen 18th eighteenth 68 sixty - eight 68th sixty - eighth 19 nineteen 19th nineteenth 69 sixty - nine 69th sixty - ninth 20 twenty 20th twentieth 70 seventy 70th seventieth 21 twenty - one 21th twenty - first 71 seventy - one 71th seventy - first 22 twenty - two 22th twenty - second 72 seventy - two 72th seventy - second 23 twenty - three 23th twenty - third 73 seventy - three 73th seventy - third 24 twenty - four 24th twenty - fourth 74 seventy - four 74th seventy - fourth 25 twenty - five 25th twenty - fifth 75 seventy - five 75th seventy - fifth 26 twenty - six 26th twenty - sixth 76 seventy - six 76th seventy - sixth 27 twenty - seven 27th twenty - seventh 77 seventy - seven 77th seventy - seventh 28 twenty - eight 28th twenty - eighth 78 seventy - eight 78th seventy - eighth 29 twenty - nine 29th twenty - ninth 79 seventy - nine 79th seventy - ninth 30 thirty 30th thirtieth 80 eighty 80th eightieth 31 thirty - one 31th thirty - first 81 eighty - one 81th eighty - first 32 thirty - two 32th thirty - second 82 eighty - two 82th eighty - second 33 thirty - three 33th thirty - third 83 eighty - three 83th eighty - third 34 thirty - four 34th thirty - fourth 84 eighty - four 84th eighty - fourth 35 thirty - five 35th thirty - fifth 85 eighty - five 85th eighty - fifth 36 thirty - six 36th thirty - sixth 86 eighty - six 86th eighty - sixth 37 thirty - seven 37th thirty - seventh 87 eighty - seven 87th eighty - seventh 38 thirty - eight 38th thirty - eighth 88 eighty - eight 88th eighty - eighth 39 thirty - nine 39th thirty - ninth 89 eighty - nine 89th eighty - ninth 40 forty 40th fortieth 90 ninety 90th ninetieth 41 forty - one 41th forty - first 91 ninety - one 91th ninety - first 42 forty - two 42th forty - second 92 ninety - two 92th ninety - second 43 forty - three 43th forty - third 93 ninety - three 93th ninety - third 44 forty - four 44th forty - fourth 94 ninety - four 94th ninety - fourth 45 forty - five 45th forty - fifth 95 ninety - five 95th ninety - fifth 46 forty - six 46th forty - sixth 96 ninety - six 96th ninety - sixth 47 forty - seven 47th forty - seventh 97 ninety - seven 97th ninety - seventh 48 forty - eight 48th forty - eighth 98 ninety - eight 98th ninety - eighth 49 forty - nine 49th forty - ninth 99 ninety - nine 99th ninety - ninth 50 fifty 50th fiftieth 100 one hundred 100th one hundredth 【即时训练】 1. — How many languages can you speak? — I can speak ______. English, Chinese and a little French. A. two B. second C. three D. third 【答案】C 【解析】本题考查数词的用法。根据答语“English, Chinese and a little French.”可知，说话者会说英语、中文和一点法语，总共是三种语言。A选项“two”表示“二”；B选项“second”是序数词，意为“第二”；C选项“three”表示“三”，符合语境；D选项“third”是序数词，意为“第三”。所以这里要用基数词“three”来表示数量，故选C项。 2. — Which day is the school's open - day this month? — It's on the ______ day. A. twelve B. twelfth C. twelfths D. twelveth 【答案】B 【解析】本题考查序数词的用法。问句询问这个月学校开放日是哪一天，答语需要用序数词来表示日期。A选项“twelve”是基数词，意为“十二”；B选项“twelfth”是序数词，意为“第十二”，符合题意；C选项“twelfths”形式错误；D选项“twelveth”拼写错误。“on the twelfth day”表示“在第十二天”，所以选B项。 3. — Which position did your team get in the basketball tournament? — We got the ______ place. A. eight B. eighth C. eights D. eightth 【答案】B 【解析】本题考查序数词的用法。问句询问球队在篮球锦标赛中获得了什么名次，回答应该用序数词。A选项“eight”是基数词，意为“八”；B选项“eighth”是序数词，意为“第八”，符合语境；C选项“eights”形式错误；D选项“eightth”拼写错误。“get the eighth place”表示“获得第八名”，因此选B项。 4. Our school's anniversary celebration will be held on the ______ of next month. A. twenty B. twentieth C. twentyth D. twentys 【答案】B 【解析】本题考查序数词的用法。表示日期时要用序数词。A选项“twenty”是基数词，意为“二十”；B选项“twentieth”是序数词，意为“第二十”，正确；C选项“twentyth”拼写错误；D选项“twentys”形式错误。“on the twentieth of next month”表示“在下个月的第二十天”，所以选B项。 5. — How many students in your class were late today? — ______ students were late. They all had different reasons. A. Seven B. Seventh C. The seven D. The seventh 【答案】A 【解析】本题考查数词的用法。问句询问今天班上有多少学生迟到，答语需要用基数词来表示数量。A选项“Seven”是基数词，意为“七”，表示“七个学生”，符合语境；B选项“Seventh”是序数词，意为“第七”；C选项“The seven”表达错误；D选项“The seventh”是“第七”。所以选A项。 【知识点清单二】大数目基数词及用法 基数词单位 示例 示例（复数表示约数） hundred 159（one hundred and fifty-nine)；600（six hundred） hundreds of（成百上千的） thousand 3000（three thousand） thousands of（成千上万的） million 5000,000（five million） millions of（数以百万计的） billion 2000,000,000（two billion） billions of（数十亿的） 【即时训练】 1. —How many students attended the vocational skills competition last month? —There were exactly ______ participants from different majors. A. two hundred B. two hundreds C. hundred of D. hundreds 【答案】A 【解析】本题考查数词的用法。在英语中，当表示具体的几百时，“hundred”用单数形式，且不与“of”连用，“two hundred”表示“二百”，A选项正确。B选项“two hundreds”中“hundreds”使用错误，当有具体数字修饰时“hundred”不能加“s”；C选项“hundred of”表达错误，“hundred”单独使用时不能直接加“of”；D选项“hundreds”若单独使用，后面需加“of”表示“成百上千的”，但这里前面有“exactly”表示确切数字，不能用“hundreds of”这种表达，所以选A项。 2. According to the textbook, ______ years ago, this area was a bustling trading port. A. three thousand of B. three thousands C. thousand of D. thousands of 【答案】D 【解析】本题考查数词的用法。A选项“three thousand of”表达错误，“thousand”前面有具体数字“three”时，后面不能加“of”；B选项“three thousands”错误，当有具体数字修饰“thousand”时，“thousand”要用单数形式；C选项“thousand of”表达错误，“thousand”单独使用时不能直接加“of”；D选项“thousands of”表示“成千上万的”，是固定短语，“thousands of years ago”表示“成千上万年前”，符合语境，所以选D项。 3. Every summer, ______ tourists visit the coastal city known for its beautiful beaches and seafood. A. million of B. millions of C. five million of D. five millions 【答案】B 【解析】本题考查数词的用法。A选项“million of”表达错误，“million”单独使用时不能直接加“of”；B选项“millions of”表示“数百万的”，是固定短语，“millions of tourists”表示“数百万的游客”，符合语境；C选项“five million of”表达错误，当“million”前面有具体数字“five”时，后面不能加“of”，直接接名词复数；D选项“five millions”错误，有具体数字修饰“million”时，“million”要用单数形式，所以选B项。 4. In autumn, ______ birds migrate southward to warmer regions. A. billion B. billions C. billion of D. billions of 【答案】D 【解析】本题考查数词的用法。A选项“billion”单独使用不能表示数量，后面需要接名词复数时，要根据具体情况用“a billion”（十亿）或“billions of”（数十亿的）等形式，此处表达错误；B选项“billions”单独使用不能表示数量，后面需加“of”，表达错误；C选项“billion of”表达错误，“billion”单独使用时不能直接加“of”；D选项“billions of”表示“数十亿的”，“billions of birds”表示“数十亿只鸟”，符合语境，所以选D项。 5. In the cooking class, each student was given ______ strawberries to make desserts. A. one dozen B. one dozens C. one dozen of D. dozens of 【答案】A 【解析】本题考查数词的用法。A选项“one dozen”表示“一打，十二个”，“one dozen strawberries”表示“十二个草莓”，符合语境，“dozen”前有具体数字“one”时用单数形式；B选项“one dozens”中“dozens”使用错误，有具体数字修饰时“dozen”不能加“s”；C选项“one dozen of”表达错误，“dozen”前有具体数字时，后面直接接名词复数，不用“of”；D选项“dozens of”表示“许多，几十”，但这里强调每个学生被给的具体数量是“一打”，用“dozens of”不符合语境，所以选A项。 6. The local farmer raised ______ sheep on his vast farmland last year. A. three score B. three scores C. score of D. scores of 【答案】D 【解析】本题考查数词的用法。A选项“three score”表示“六十”，“score”前有具体数字时用单数形式，但是在现代英语中这种用法相对较少，且此处语境强调数量多，“three score”不太符合；B选项“three scores”错误，“score”前有具体数字时不能加“s”；C选项“score of”表达错误，“score”单独使用时不能直接加“of”；D选项“scores of”表示“许多，大量”，“scores of sheep”表示“许多羊”，符合语境，所以选D项。 【知识点清单三】数词的实际应用 场合 示例 表达时刻 整点+分钟 8：15（eight fifteen） 分钟+past+整点（≤30分钟) 7:16（sixteen past seven） 差额分钟+to+整点（>30分钟） 11:45（fifteen/a quarter to twelve） 表达年份 1996（nineteen ninety-six） 2021（two thousand and twenty- one或twenty twenty-one） 表达日期 2021.10.10（October the tenth, two thousand and twenty- one） 表达世纪和年代 the 1980s或the 1980’s（20世纪80年代）；in the 2020s（在21世纪20年代） 表达年龄 基数词+year(s)+old I am 18 years old when I start to live on my own. （我十八岁开始独自生活。） 基数词-year-old复合形容词 He is an eight-year-old boy. （他是一个八岁的小男孩。） in one’s +整十基数词的复数形式 She is in her fifties. （她五十多岁。） at the age of +基数词 He started to learn the piano at the age of seven. （他七岁时开始学习弹钢琴。） 表达分数 分子用基数词，分母用序数词，若是分子大于1时，分母加s， 1/2（one-second），1/4（one-fourth），2/5（two-fifths），4/7（four-sevenths） 表达小数 小数点前的基数词按照基数词读法；小数点读作point；小数点后则需将数字一一读出 603.09（six hundred and three point zero nine） 表达百分数 百分数中的%读作percent，没有复数形式 15%（15 percent） 表达次数和倍数 once（一次），twice（两倍、两次），three times（三倍、三次） 表达编号 Lesson Three / the third lesson（第3课） 【即时训练】 1. — What time does the morning reading start? — It begins at ______. Don't be late! A. seven to thirty B. half past seven C. thirty-five to eight D. quarter to eight 【答案】B 【解析】本题考查时间的表达法。A选项“seven to thirty”表达错误，正确的时间表达中没有这种形式；B选项“half past seven”表示“七点半”，符合时间表达规则，正确；C选项“thirty-five to eight”表达错误，一般时间表达中分钟数大于30时，用“差几分到几点”的表达，应该是“twenty-five to eight”；D选项“quarter to eight”表示“差一刻到八点（即七点四十五）”，与题意不符。所以选B项。 2. The first commercially successful smartphone, the iPhone, was invented in ______. A. eighteen ninety B. 2000s C. seventeen ninety-five D. 2007 【答案】D 【解析】本题考查年份的表达。A选项“eighteen ninety”表达错误，年份表达应该是“eighteen ninety”这种形式没有意义；B选项“2000s”表示“21世纪初（2000 - 2009年）这一时间段”，不是具体的某一年，不符合题意；C选项“seventeen ninety-five”表达错误，没有这种年份表达形式；D选项“2007”，iPhone是在2007年发明的，表达正确，所以选D项。 3. Our school's annual art festival will be held on ______. Remember to come and enjoy the show! A. May 15th, 2024​ B. the fifteenth of May, twenty and twenty-four​ C. May fifteen, two thousand twenty-four​ D. the fifteen of May, two thousand and twenty-four 【答案】A 【解析】本题考查日期的表达。A选项“May 15th, 2024”表示“2024年5月15日”，是正确的日期表达形式；B选项“the fifteenth of May, twenty and twenty-four”表达错误，年份表达“twenty and twenty-four”是错误的，正确的是“two thousand and twenty-four”；C选项“May fifteen, two thousand twenty-four”表达错误，日期应该用序数词“fifteenth”而不是基数词“fifteen”；D选项“the fifteen of May, two thousand and twenty-four”表达错误，日期用“the fifteen”错误，应该是“the fifteenth”。所以选A项。 4. The Internet became popular among the public in ______, revolutionizing information access. A. the 1990​ B. 1990s​ C. the 1990s’​ D. the 1990s 【答案】D 【解析】本题考查年代的表达。A选项“the 1990”表达错误，这种形式不是正确的年代表达；B选项“1990s”表达错误，在表示年代时，前面要加“the”；C选项“the 1990s’”表达错误，“the 1990s”本身就表示“20世纪90年代”，不需要加“’”；D选项“the 1990s”表示“20世纪90年代”，是正确的年代表达形式，所以选D项。 5. ______ girl won the first prize in the national drawing competition. A. A ten-year-old​ B. A ten-years-old​ C. Ten years old​ D. Ten-year old 【答案】A 【解析】本题考查复合形容词的用法。A选项“a ten-year-old”是复合形容词，意为“一个十岁的”，修饰名词“girl”，正确，其中“year”用单数形式；B选项“a ten-years-old”错误，“year”在这种复合形容词中不能用复数形式“years”；C选项“Ten years old”表示“十岁”，是一个表语结构，不能作定语修饰名词，不符合题意；D选项“Ten-year old”表达错误，正确的应该是“ten-year-old”。所以选A项。 6. About ______ of the students in our class prefer online learning. A. two-third​ B. two-thirds​ C. second-three​ D. seconds-three 【答案】B 【解析】本题考查分数的表达。分数的表达规则是：分子用基数词，分母用序数词，当分子大于1时，分母用复数形式。A选项“two-third”错误，分母“third”没有用复数形式，当分子是“two”时，分母应该是“thirds”；B选项“two-thirds”表示“三分之二”，符合分数表达规则，正确；C选项“second-three”和D选项“seconds-three”都不是正确的分数表达形式。所以选B项。 7. The price of this new calculator is ______ yuan. It’s very affordable. A. thirty point five​ B. thirty-five point zero​ C. thirty-five point​ D. thirty and five point 【答案】A 【解析】本题考查小数的表达。小数的表达是：整数部分按基数词的读法读，小数点读作“point”，小数部分按数字的先后顺序依次读出。A选项“thirty point five”表示“30.5”，正确；B选项“thirty-five point zero”表示“35.0”，与题意不符；C选项“thirty-five point”表达不完整，没有读出小数部分；D选项“thirty and five point”表达错误，不是正确的小数表达形式。所以选A项。 8. The discount on winter clothes reaches ______ during the end-of-season sale. A. thirty percents B. thirty percent​ C. thirtieth percent​ D. thirtieth percents 【答案】B 【解析】本题考查百分数的表达。“percent”表示“百分之……”，没有复数形式，前面用基数词。A选项“thirty percents”错误，“percent”不能加“s”；B选项“thirty percent”表示“百分之三十”，正确；C选项“thirtieth percent”错误，这里应该用基数词“thirty”而不是序数词“thirtieth”；D选项“thirtieth percents”既用了错误的序数词“thirtieth”，“percent”又加了“s”，错误。所以选B项。 9. I’ve been to the city library ______ this week. It’s my favorite study spot. A. two time​ B. twice times​ C. twice​ D. 2nd time 【答案】C 【解析】本题考查次数的表达。A选项“two time”错误，“time”表示“次数”时是可数名词，“两次”应该是“two times”，且更常用“twice”；B选项“twice times”错误，“twice”本身就表示“两次”，后面不能加“times”；C选项“twice”表示“两次”，正确；D选项“2nd time”错误，“第二次”常用“the second time”，且此处表达“去过两次”，用“twice”更合适。所以选C项。 10. We will start learning the ______ lesson next week. It's about cultural differences. A. nine B. ninth C. nines D. nineth 【答案】B 【解析】本题考查序数词的用法。A选项“nine”是基数词，意为“九”，此处表示“第几课”应该用序数词，不符合题意；B选项“ninth”是序数词，意为“第九”，“the ninth lesson”表示“第九课”，正确；C选项“nines”是基数词“nine”的复数形式，不能表示顺序，不符合题意；D选项“nineth”拼写错误，“第九”的正确拼写是“ninth”。所以选B。 句法功能 示例 作主语 基数词 Three are enough for this game.（三个人参加这个游戏就够了。） 序数词 The second is always remembered.（第二名总是会被记住。） 作宾语 基数词 I need five to finish this task.（我完成这项任务需要五个。） 序数词 I like the third best.（我最喜欢第三个。） 作表语 基数词 The number of students in this class is forty.（这个班的学生人数是四十。） 序数词 She is the first in the race.（她在比赛中是第一名。） 作定语 基数词 There are six books on the table.（桌子上有六本书。） 序数词 He lives on the fifth floor.（他住在五楼。） 【知识点清单四】数词的句法功能 【即时训练】 1. — How many people are needed for the group project? — ______ are enough to complete it efficiently. A. Five B. Fifth C. The five one D. The fifth 【答案】A 【解析】本题考查数词的用法。问句询问小组项目需要多少人，回答应该用基数词表示数量。A选项“Five”是基数词“五”，表示“五个人”，符合题意；B选项“Fifth”是序数词“第五”，不符合语境；C选项“The five one”表达错误；D选项“The fifth”也是序数词，不能用来回答数量问题。故选A项。 2. — Who of you three will be in charge of the second - stage plan? — ______ will take on this important responsibility. A. The third B. The three of you C. Third D. Three 【答案】A 【解析】本题考查序数词的用法。问句问“你们三个谁将负责第二阶段的计划”，回答用“the + 序数词”表示“第几个”，这里“the third”表示“第三个人”，即三人中的第三个，符合语境。B选项“The three of you”表示“你们三个”，没有明确指出谁负责；C选项“Third”单独使用不能表示“第三个人”；D选项“Three”是基数词“三”，不能用于回答“谁”的问题。故选A项。 3. The teacher asked us to collect ______ for the environmental protection project. A. ten samples B. tenth samples C. the ten sample D.the tenth samples 【答案】A 【解析】本题考查基数词和名词的搭配。“collect ten samples”表示“收集十个样本”，基数词“ten”表示数量，直接修饰名词“samples”，A选项正确。B选项“tenth samples”中“Tenth”是序数词，意为“第十”，不符合“收集样本”表示数量的语境；C选项“the ten sample”表达错误，应该是“ten samples”；D选项“the tenth samples”同样是序数词用法错误。故选A项。 4. — What's the total number of participants in the workshop? — The number of participants is ______. A. fifties B. fifty C. the fifty D. the fiftieth 【答案】B 【解析】本题考查基数词表示数量。问句问研讨会的参与者总数，回答用基数词表示具体数量。“fifty”表示“五十”，符合题意，B选项正确。A选项“fifties”是“fifty”的复数形式，通常用于“in one's fifties”等短语中，表示“在某人五十多岁时”；C选项“the fifty”用法错误；D选项“the fiftieth”是序数词“第五十”，不能用来回答数量问题。故选B项。 5. — What's your place in the singing competition? — I am ______ in the final round. A. the second B. two C. the 2th D. the two 【答案】A 【解析】本题考查序数词的用法。问句询问在歌唱比赛中的名次，回答要用序数词表示“第几名”。“the second”表示“第二名”，A选项正确。B选项“two”是基数词，不能表示名次；C选项“the 2th”书写错误，正确的是“the second”；D选项“the two”不能表示“第二名”的意思。故选A项。 6. — How many computers are there in the computer lab? — There are ______ computers ready for students' use. A. eight B. eighth C. the eight D. the eighth 【答案】A 【解析】本题考查基数词表示数量。问句问计算机实验室有多少台电脑，回答用基数词表示数量。“eight”表示“八”，“eight computers”即“八台电脑”，A选项正确。B选项“eighth”是序数词“第八”，不符合语境；C选项“the eight”用法错误；D选项“the eighth”也是序数词，不能用于回答电脑的数量问题。故选A项。 7. We will have a meeting in the ______ conference room tomorrow. A. fiveth B. five C. fifth D. five 【答案】C 【解析】本题考查序数词的用法。表示“第几个”会议室要用序数词，“fifth”是“five”的序数词形式，意为“第五”，“in the fifth conference room”表示“在第五会议室”，C选项正确。A选项“fiveth”书写错误；B选项“five”是基数词，不能表示顺序；D选项重复且错误。故选C项。 8. — How many clubs are there in our school? — There are ______ clubs in total, and I joined the ______ one I liked best. A. twelve; third B. twelfth; three C. the twelve; the third D. the twelfth; the three 【答案】A 【解析】本题考查基数词和序数词的用法。第一个空回答俱乐部的总数，用基数词“twelve”表示“十二个”；第二个空表示“我加入了我最喜欢的第三个俱乐部”，用序数词“third”表示“第三”。A选项符合题意。B选项“twelfth”是序数词“第十二”，“three”是基数词，不符合语境；C选项“the twelve”和“the third”中“the”多余，在这种语境下不需要加定冠词；D选项“the twelfth”和“the three”用法错误。故选A项。 9. — Which room is the English speech contest held in? — It’s in Room ______, on the ______ floor of the teaching building. A. 502; fifth B. 502; five C. five - zero - two; five D. fifth - zero - two; fifth 【答案】A 【解析】本题考查基数词和序数词的用法。表示房间号用基数词，“Room 502”表示“502房间”；表示楼层用序数词，“the fifth floor”表示“在五楼”。A选项正确。B选项中“five”是基数词，不能表示楼层；C选项“five - zero - two”表示房间号的方式不规范，且“five”不能表示楼层；D选项“fifth - zero - two”表示房间号错误。故选A项。 10. My father bought me ______ storybooks, and the ______ one is about a brave boy. A. three; third B. third; three C. the three; the third D. the third; the three 【答案】A 【解析】本题考查基数词和序数词的用法。第一个空表示“我爸爸给我买了三本故事书”，用基数词“three”表示数量；第二个空表示“第三本是关于一个勇敢的男孩”，用序数词“third”表示顺序。A选项正确。B选项顺序错误；C选项“the three”和“the third”中“the”在这种语境下多余；D选项用法错误。故选A项。 ( 1 ) 原创精品资源学科网独家享有版权，侵权必究！ 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $$