2022届中考英语语法复习-数词知识点讲解与练习

2022届中考英语语法复习-数词知识点讲解与练习 ★数词 指表示数目多少或顺序多少的词，包含基数词（表数目：one,two,three等）和序数词（表顺序：first,second,third等）. （1）基数词 1-12 是独立单词,需逐个记忆。 基数词 13-19是个位数词的词干后加-teen 构成。其中 thirteen, fifteen, eighteen 变化不规则。 基数词 20-90 是在个位数词后面加 -ty 构成。其中 twenty, thirty, forty, fifty, eighty 变化不规则。 基数词 21-99 是在十位数词后面加上个位数词合成,中间加上连字符 " - " 。 例如: 21 twenty-one,95 ninety-five 基数词三位以上的数词, 在百位和十位之间,一般要用连词"and "，十万位和万位,亿位和千万位之间通常也要加and。例 如: 132 one hundred and thirty-two,1340 one thousand three hundred and forty. （2）英语中没有万，十万，千万，亿这样的单位数词，ten thousand 十千，十千（1000×10）=一万。故用阿拉伯数字书 写千以上的数目时，要由右向左每三位数间留一个空格或写一个逗号。第一个前为thousand；第二个前为million；第三 个前为thousand million（英）或billion（美）。每两个空格间或两个逗号间的三位数都被看作“十位数或百位数的千”或 “十位数或百位数的百万”。例如56 000 fifty-six thousand和600,000,000 six hundred million。 （3）dozen,score,hundred,thousand,million等数词前面有基数词或某些表示数量的形容词时，不加-s。例如 a few hundred meters 几百米 several million people 数百万人 two thousand teachers 两千位老师，但如表示“几百”“几千”“几百万”等笼统 的数目时，则应用-s of构成短语。如：hundreds of books 几百本书 thousands of workers 几千个工人 （4）hundred、 thousand、 million作数词时,不用复数,前面可以加上one, two, …等其它数词。用作名词时复数表示“成… 上…”,后面必须要有of,前面可以加上some,many,several等词。如：five hundred(五百), hundreds of(成百上千的), ten thousa nd(一万), thousands of(成千上万的), millions of(成百万的). 专项练习题（30个题 1分） ( ) 1. —Have you heard of the Two-Child policy? —Of course. And I know many couples have new babies in their _____. A.forties B.fortieth C.the fortieth D.forty ( ) 2.—Where is Class _____? —It's on the _____ floor. A.Six; third B.Sixth; third C.Six; three D.Sixth; three ( ) 3.My family lives on _____ floor of the building. A.twelve B.the twelfth C.twelfth D.the twelve ( ) 4.Two _____ students _____ to the opening ceremony last Friday. hundreds; were invited B.hundred; were invited C.hundreds of; invited D.hundred;invited ( ) 5.There are _____ months in a year. December is the _____ month of a year. A.twelve; twelve B.twelfth; twelfth C.twelve; twelfth D.twelfth; twelve ( ) 6.Please turn to Page _____ and take a look at the picture on it. A.the eightieth B.Eightieth C.Eighties D.Eighty ( ) 7.There are _____ months in a year. My birthday is in the _____ month. A.twelve; twelve B.twelfth; twelfth C.twelve; twelfth D.twelfth; twelve ( ) 8.We gave away _____ books to the school library last year. A.six thousands B.six thousand C.six thousands of D.six thousand of ( ) 9.Our country is 70 years old this year. We will celebrate her _____ birthday on Oct. 1. A.the seventieth B.seventieth C.the seventy D.seventy ( ) 10._____ of the students in our class ... ...