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(共21张PPT)
专题五　数词
　　 年份 考查点　　　　 2026 2025样卷 2024 2023 2022
基数词变序数词 53 51 77 80 79
分数占比 1分 1分 1分 1分 1分
一、基数词与序数词的构成
1～9 11～19 10～90(整十数) ≥100
基数词 序数词 基数词 序数词 基数词 序数词 基数词 序数词
one first eleven eleventh ten tenth hundred hundredth
two second twelve twelfth twenty twentieth thousand thousandth
three third thirteen thirteenth thirty thirtieth million millionth
four fourth fourteen fourteenth forty fortieth billion billionth
1～9 11～19 10～90(整十数) ≥100
基数词 序数词 基数词 序数词 基数词 序数词 基数词 序数词
five fifth fifteen fifteenth fifty fiftieth 基变序，有规律，末尾加上th； 一二三，特殊记，词尾字母t d d； 8去t，9去e，ve要用f替； 整十基数要变序，ty变为tie； 若是碰到几十几，只变个位就可以。
six sixth sixteen sixteenth sixty sixtieth
seven seventh seventeen seventeenth seventy seventieth
eight eighth eighteen eighteenth eighty eightieth
nine ninth nineteen nineteenth ninety ninetieth
续表
二、基数词的用法
用法 示例
表示数量 (几个) 表示事物或人物的确切数量，用基数词＋可数名词单数/复数 one apple
two pears
表示时刻 基数词＋o’clock nine o’clock
半小时以内(≤30分钟)：分钟数＋past＋小时数 twenty past three
超过半小时(＞30分钟)：基数词(60-分钟数)＋to＋基数词(小时数＋1) twenty to three
用法 示例
表示日期 年份用基数词，日期(日)用序数词 in 2027
on September 12th/on Sept.12th
表示年代 in the＋整年份复数 (末尾加 s) in the 1980s
续表
用法 示例
表示年龄 表达几岁：基数词＋year(s) old seven years old
在几岁时：at the age of＋基数词 at the age of seven
在某人几十多岁时：in＋one’s＋整十基数词复数 in his twenties
续表
用法 示例
表示顺序/编号 用基数词(编号在后)：名词(首字母大写)＋基数词 Page Six/Page 6
Room 301
用序数词(编号在前)：the＋序数词＋名词 the sixth/6th page
续表
用法 示例
表示长、宽、高、重量等度量 形容词结尾：基数词＋单位词(meter/kg等)＋ 形容词(long/wide/high等) three meters long
in＋名词：基数词＋单位词＋in＋长度/宽度/高度等名词 20 meters in length
续表
用法 示例
表示距离 用数词＋名词的所有格(’s 或 s’)来修饰另一个名词 twenty minutes’ walk
two hours’ drive
数词与名词、形容词构成复合定语 基数词＋名词(必须用单数)＋形容词，中间用连字符-连接，整体作定语修饰后面的名词 a five-year-old boy
a two-mile-long road
续表
三、序数词的用法
用法 示例
表示顺序 (第几个) the＋序数词＋可数名词单数 Judy is the first student to arrive at school.
表示日期 日期用序数词(读)，年份用基数词(读) April fifth　in 1930(nineteen thirty)
用法 示例
表示“第几最……”(序数词＋最高级) the＋序数词＋形容词最高级＋可数名词单数 China is the third largest country in the world.
表示“又一、再一” a/an＋序数词 又一个、再一个(数量上的增加) He wants to have a second child.(强调数量增加)
the＋序数词 第几个(顺序) He is the second child in his family.(强调顺序)
续表
【注意】
1.序数词前通常加the，其后接可数名词单数，但当序数词前有形容词性物主代词、名词所有格或指示代词等限定词时，不能加the；
2.one对应的频率表达是once(一次)，two对应的频率表达是twice
(两次)。
续表
河北5年真题练
1.(2026河北52题节选)All of us tried our best to make cups by ourselves.I succeeded on my ________ (six) try.
2.(2025河北样卷51题节选)Last Sunday，Lucy helped our dad cut the grass.It is the ________ (four) time for her to do that this year.
sixth
fourth
3.(2024河北76题节选)Lin Ming stood at the school gate and waited for his sister.Several minutes later，many children walked out in a line.Lin Fang was the ________ (five) one in it.
4.(2023河北80题节选)Now I am in the ________ (nine) grade，and I’m leaving school.I will remember all the suggestions he has given me.
fifth　
ninth
5.(2022河北79题节选)Mrs.Zhang made a very big cake with fresh flowers on it.It was my ________ (one) time to see such a cake.
first
拓展提升练
短文填空 基础题
1.(2026泸州改编)The Yellow River，one of the birthplaces of our culture，is the _________ (two) longest river in China.
2.My father’s _________ (forty) birthday is coming.We will have a big meal.
second　
fortieth
3.We celebrate Tree Planting Day on the _________ (twelve) of March every year.
4.This is my ________ (three) time to celebrate the festival with my foreign friends.
5.Look at that tall building near here.My uncle’s workshop is on its ________ (ten) floor.
twelfth
third
tenth
6.This is my _______ (one) time to take part in a tree-planting activity.
7.This is my ________ (two) time to take part in the school speech contest.
8.Look at the girls over there.The _________ (four) one is my cousin，Amy.
first
second
fourth
9.The ________ (five) day of the fifth lunar month is the Dragon Boat Festival.
10.The Double Ninth Festival is on the ________ (nine) day of the ninth lunar month.
11.This is the ________ (three) time that our school football team has won the championship this year.
fifth
ninth
third
12.April 23 is World Book Day，and the _________(four) week of April is National Reading Week in China.
13.Our city usually holds a big party on the ___________ (twenty) of October for the public holiday.
14.2026 is the Year of the Horse.The horse is the __________ (seven) animal in the Chinese zodiac (生肖).
15.Last week we played against another school and we won.This is the _________ (eight) time we have beaten them.
fourth
twentieth
seventh
eighth

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