中考英语专题复习-专题四-数词.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,专题四,数词,专题四 数词,分析甘肃近3年中考真题可以看出，数词考查点包括：基数词与序数词、概数词和分数。考查的题型主要涉及语法与情景对话和词汇考查。,1,基数词与序数词,1.基数词的用法,1.基数词的用法,(1)表示数量。百位数与十位数之间用and连接，十位数与个位数之间用“,-,”连接。如：180可写作：one hundred and eighty;32可写作：thirty,-,two。,(2)表示顺序。基数词表示顺序时，由“单数名词+基数词”构成，此时名词和基数词的首字母通常都大写。如：Grade Nine九年级，Lesson Ten第十课(3)“in+the+年代,-,s”表示“在世纪年代”；“in+one,s+整十的复数”表示“在某人多岁时”。如：in the 1960s在二十世纪六十年代；in his forties在他四十多岁时。,(4)“another+基数词+名词复数”=“基数词+more+名词复数”,表示在一定基础上增加一定的数量。如：We need another two chairs.=We need two more chairs.我们还需要两把椅子。,(5)“基数词+连字符+名词(+形容词)”作定语，名词用单数形式。如：a five,-,year plan一个五年计划。,2.序数词的用法,(1)序数词前无限定词时，必须加the。如：,The second is what I really need.第二个是我真正需要的。,(2)序数词前若有限定词，则可以不用加the。如：,It is my third time to visit Beijing.这是我第三次参观北京。,(3),序数词前面也可以加不定冠词a或an，表示“又一，再一”，内含顺序性。,如：,We,ve tried it three times.Must we try it a fourth time?,我们已经试过三遍了，还需要再试一次（第四次）吗？,3.常考基数词和序数词对照表,onefirst,twosecond,threethird,fourfourth,fivefifth,sixsixth,sevenseventh,eighteighth,nineninth,tententh,eleveneleventh,twelvetwelfth,thirteenthirteenth,fourteenfourteenth,fifteenfifteenth,sixteensixteenth,seventeenseventeenth,eithteeneighteenth,nineteennineteenth,twentytwentieth,thirtythirtieth,fortyfortieth,fiftyfiftieth,sixtysixtieth,seventyseventieth,eightyeightieth,ninetyninetieth,基数词变序数词的口诀：,基变序，有规律，一、二、三特殊记，词尾字母tdd,八去t,九去e,ve要用f替，整十基数变序数，记得把y变ie,若是遇到几十几，只变个位就可以。,考点小练,1.The young man plans to have a,(two)try after his failure.,2.Tony Morrison is considered as one of the best writers of the,(twenty)century.,seconed,twentieth,2,概数词,1.表示确定的数字,当表示确切概念时，hundred,thousand,million等词与具体的数字one,two或several,some,many等连用，要用单数形式。如：five hundred people 500人。,2.表示不确定的数字,当表示不确切概念时，hundred,thousand,million等词与of 连用，要用复数形式，但前面不能再加数字。如：thousands of factories 成千上万家工厂。,考点小练,3.It,s reported that over eight,people lost their lives in the,earthquake,in Nepal this year.,A.thousand B.thousands,C.thousand of D.thousands of,4.Basketball is so exciting that,people play it for fun.,A.millions B.two millions,C.million of D.millions of,A,D,3,分数,1.分数的表达,分数的构成=基数词序数词,注：分子大于1，分母变复数,分数有以下几种表达：1/3 one third；2/3 two thirds,2/5 two fifths；1/2 a,half；1/4 a quarter,one and a half等。,5.Come on,baby.We have already done,of the work.,A.one thirds B.third one,C.one third D.one three,6.,of the land in that district is covered with trees and grass.,A.Fourth three B.Three quarter,C.Fourth third D.Three fifths,考点小练,C,D,