英语数词用法2

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,*,数 词,数词分,基数词,和,序数词,两类。,一,.,基数词的写法：,A,从,112 one,，,two,，,three,，,four,，,five,，,six,，,seven,，,eight,，,nine,，,ten,，,eleven,，,twelve,，,B,从,1319 (-teen),thirteen,，,fourteen,，,fif,teen,，,sixteen,，,seventeen,，,eight,een,，,nineteen,C,从,2090 (-,ty,)twen,ty,，,thir,ty,forty,，,fifty,，,sixty,，,seventy,，,eighty,ninety,D.21-twenty,-,one,E.,基数词的读法：,156,85,214,547,891,256,7,987,452,314,二,.,序数词的写法：,A,第一至第三,first,，,second,，,third,，,B,第四至第十九（,-,th,）,特殊：,fifth,，,eighth,，,ninth,，,twelfth,C,从第二十至第九十,变,y,为,i,，再加“,eth”,构成。,twentytwent,ieth,thirtythirt,ieth,D,表示第几十几时，用几十的基数词,+,连字符“”,+,个位序数词,。,thirty-,first,第三十一,fifty-,sixth,第五十六,seventy-,third,第七十三,ninety-,ninth,第九十九,数词的用法：,1,编号的表示法：,由“单数名词,+,基数词”构成，此时名词和基数词的第一个字母通常都大写。,Lesson One,/,the first lesson,第一课,Room 55,55,号房间,Row Four,第四排,Page Two,/,the second page,第,2,页,No.9 Middle School,第九中学,Bus No.2,或,the No.2 bus 2,路公共汽车,Eg,：,Now,everybody,please turn to Page,_,and look at the _ picture.,A.Fifth;five B.Five;fifth C.Fifth;fifth D.Five;five,注意：“单数名词,+,基数词”可以转换为“,the+,序数词,+,单数名词”，此时名词的第一个字母不大写。如：,Lesson Ten=the tenth lesson,第十课,2,、时间表示法：,1.5:00,读作,five,oclock,2.,几点过几分,(,past,),10:10,6:30,3.,几点差几分,(,to,),8:50,10:35,3,.,年、月、日的表示法：,on March 20,，,2014,确数与概数的表达,:,A:,英语中表示确数的方法为“,基数词,+,计数单位的单数（,hundred,thousand,million,billion)+,名词复数”；,B:,英语中表示概数的方法为,“计数单位的复数,(,hundreds,thousands,millions,billions)+of+,名词复数”。,There are,six,hundred workers,in this factory.,Thousands of,visitors,have come to Beijing last week.,注意：,hundreds of,thousands of,millions of,前可用,several,many,some,，,a few,等词修饰。,eg,：,many,hundreds,of workers,【,真题链接,】,（,2013,重庆）,The government of Chongqing is building _ cheap and good houses for people.,A.thousand B.thousands,C.thousand of D.thousands of,（,2011,孝感）,How much did the company donate to build the school library?,About three _,yuan,.,A.million B.millions,C.million ofD.millions of,5.“,in ones+,整十”的基数词的复数形式,可用于表示在某人几十多岁时。,He wrote many books,in his thirties,.,他在,30,多岁时就写了很多本书。,6.“another+,基数词,+,名词复数”或“基数词,+more+,名词复数”表示在已有基础上再增加一定的数量。,They wanted,another two books.,他们又要了两本书。,We need,two more days,to finish the work.,我们还需要两天来完成这项工作。,7.,分数的表达与用法：,1.,分数的构成,分子用基数词，分母用序数词；如果分子大于,1,，分母要用复数形式。,1/2 one second 3/4 three fourth,s,2/5 two fifth,s,2.,分数的用法,:,A:“,分数,+of+,限定词,+,名词复数”作主语时，谓语动词应用复数形式；,B:“,分数,+of+,限定词,+,不可数名词,/,名词单数”作主语时，谓语动词应用第三人称单数形式。,Three fourths of the,students,are,from America in this school.,这所学校一半学生来自美国。,Two thirds of her,money,was,spent on clothes.,她把三分之二的钱花在了衣服上。,【,真题链接,】,（,2012,深圳）,_ people are taking action to protect the environment now.,Yes._ of my classmates come to school by bike now.,A.More and more;Four fifth,B.Less and less;Four fifth,C.More and more;Four fifths,D.Less and less;Four fifths,