2026年安徽省中考英语二轮复习语法专项课件：数词

数词 考点梳理 考点一 基数词 1.基数词的构成 1~12 独立成词,需逐个记忆 13~19 词尾加-teen。例如:thirteen,fifteen,eighteen 整十 逢十词尾加-ty。例如:twenty,thirty,forty,fifty,eighty,ninety 几十几 在十位与个位之间加连字符构成。例如:twenty-one 几百几 百位数字+hundred+and+其他。例如:nine hundred and twenty-one 四位数或四位数 以上的基数词 先将数字从右往左数,每三位数用一个逗号隔开, 从右往左第一个逗号表示 “千”,读作thousand;第二个逗号表示 “百万”,读作million;第三个逗号表示 “十亿”,读作billion。例如:99,921表示为ninety-nine thousand,nine hundred and twenty-one 2.基数词的用法 表示数量 基数词+复数名词,例如:five apples五个苹果 表示编号 基数词放在名词后面 No.+基数词 表示时间 表示整点用基数词加o’clock,o’clock可省略 表示几点几分,与汉语顺序相同 如果分钟数小于或等于30,在分钟后加past,再加小时,表示几点过几分,即分钟+past+小时 如果分钟数大于30,要用to来表示差几分到几点,即(与下一小时相差的)分钟+to+下一小时 表示年代、年份 阿拉伯数字后加-s,例如:in the 1870s 在19世纪70年代 表示长、宽、高等 “基数词+单位词(meter/foot等)+形容词(long/wide/high等)”结构,如:The door is two meters high.这个门有两米高。 “基数词+单位词(meter/foot等)+in+名词(length/width/height等)”结构,例如:The door is two meters in height.这个门有两米高。 表示年龄 “基数词+year(s) old”表示“……岁” “at the age of +基数词”表示“在……岁时” “in one’s+整十基数词的复数”表示“在某人……十多岁时” 续表 表示倍数 两倍用twice,三或三以上的倍数用“基数词+times” 【拓展】用来表示“倍数”的结构有:倍数+the size/weight/height/depth/width/length等+of+比较对象;倍数+比较级+than+比较对象;倍数+as...as+比较对象 表示在已有的基础上再增加一定的数量 “another+基数词+可数名词”或“基数词+more/other+可数名词” hundred/thousand/million/ billion 前有基数词时,这些词词尾不加-s,表示确切的数字 表示数量不准确时,这些词词尾加-s,并与of连用 【效果评估】 一、单项填空 1.[2025 四川广元]My old grandfather is in his ,but he can still do some gardening and look after himself well. A.nineteen B.ninety C.ninetieth D.nineties D 2. visitors came to take photos of Hongyadong during the vacation. A.Thousand B.Thousand of C.Thousands D.Thousands of D 3.[2025 六安模拟]My uncle joined the Party .And he’s now. A.in 1970s;in his forties B.in the 1970s;in his fortieth C.in the 1970s;in his forties D.in 1970;in his fourties C 二、单词拼写 4.According to the reporter,more than two_ (百) trees have been planted in the activity. 5.[2025 四川广安改编]In order to win the match,we have to train (两次) a week. twice hundred 考点二 序数词 1.序数词的构成 构成 举例 第一、第二、第三需特殊记忆 first、second、third 4~19序数词是由其相对应的基数词后面加-th构成。注意:有4个序数词的拼写不规则,分别是fifth、eighth、ninth、twelfth four fourth fifteen fifteenth 构成 举例 整十的序数词由其对应的基数词变词尾字母y为ie,再加-th构成。注意:ten的序数词为tenth thirty thirtieth 表示“第几十几”时,只需将个位数变为序数词,十位数仍用基数词 thirty-six thirty-sixth 2.序数词的用法 用法 举例 “the+序数词”表示顺序,但如果序数词前有形容词性物主代词、名词所有格等限定词,the要省略 the first day 第一天 my second book我的第二本书 表示日期 on October 25th 在10月25日 “a/an+序数词”表示“又一;再一” try a second time 再试一次 【效果评估】 一、单项填空 1.—What day is it today? —It is Friday,and it’s my birthday. A.sixteen B.the sixteenth C.sixteenth D.the sixteen C 2.[2025 黑龙江绥化改编]It’s well known that December is the month of a year. A.twelve B.twelfth C.twelveth D.twentieth 3.The weather in Kunming is so comfortable and I have been there times.If possible,I still want to go there a time. A.three;fourth B.third;fourth C.three;four D.third;four A B 二、用括号内所给词的适当形式填空 4.[2025 甘肃白银]This is Li Hua’s (three) time to be a volunteer. 5.[2025 江苏连云港]Su Bingtian was the (one) Asian to break the 10-second barrier(难关) in the men’s 100m race. first third 考点三 分数 1.分数的构成 分子用基数词,分母用序数词,若分子大于1,分母要用复数形式,分子和分母之间可以用连字符,也可以不用。例如: 1/6:one sixth/one-sixth 3/4:three fourths 2.分数的用法 用法 例句 分数作主语时,谓语动词单复数形式由of后面的名词决定 Three eighths of the work has been finished.这项工作的八分之三已经完成了。 “分数+of+限定词+population”作主语时,谓语动词为复数,此时population相当于people Three fourths of the population in Singapore are Chinese.新加坡有四分之三的人口是华人。 【效果评估】 根据汉语意思完成句子,每空一词 1.这首歌在19世纪60年代非常流行。 This song was very popular . 2.我们早上第一节课7:45开始。 Our first class begins at eight. a quarter to in the 1860s 3.地球表面大约三分之二是海洋。 About of the earth’s surface _ ocean. is two thirds 强化练习 一、根据句意用所给词的适当形式填空(每小题1分,满分5分) 1.Harbin is a beautiful city.So (million) of people come here to enjoy snow every winter. 2.[2025 四川德阳改编]China’s National Day is in October,the (ten) month of the year. 3.[2025 云南]Every year,people celebrate World First Aid Day on the (two) Saturday in September. second tenth millions 4.Michelle Yeoh becomes the first Chinese actress to win an Oscar in her (sixty). 5.Three (quarter) of my spare time was spent helping clean up the city park last weekend. quarters sixties 二、根据句意及所给提示完成句子,每空一词(每小题2分,满分16分) 1.There are (两百) teachers and (几千) students in our school. 2.Go along this road,and turn right _ _ _ (在第一个十字路口).The library is on your left. crossing at the first thousands of two hundred 3. (大约五分之二) of my classmates help their parents do housework on weekends. 4.I have been to Mount Huangshan three times.And I would like to visit it (第四次). 5.Betty has been learning Chinese painting for _ _ _ _ _ (八年半). eight/eight and/years a/and half/a years/half a fourth time About two fifths 6.My grandma told me the number “9” stands for “long lasting”.So I chose (九楼) to live on. 7.It’s never too old to learn.Karl Marx began to learn Russian (在他五十多岁时). 8.What a shame!I only remembered _ _ (前三个) words that appeared on the screen. the first three in his fifties the ninth floor 三、按要求完成句子,每空一词(每小题2分,满分10分) 1.Eileen Gu started learning skiing when she was three years old.(改为同义句) Eileen Gu started learning skiing the_ _ three. 2.That is a two⁃meter⁃tall basketball player.(改为同义句) That basketball player is two . meters tall age of at 3.There are ten apples in the basket.(对画线部分提问) apples are there in the basket? 4.Our community has a charity donation twice a year.(对画线部分提问) does your community have a charity donation? How often How many 5.Eric eats breakfast at half past seven every day.(改为同义句) Eric eats breakfast at every day. seven thirty $