1、数词归纳小结：数词归纳小结：1掌握基数词、序数词、分数词、倍数、百分数、年月日、钟点、年龄、序号的基本用法。2掌握不定数量词、约数词的表达方法。数词在各个题项中，单选、阅读、听力、写作中发挥着很强的作用，往往用以说明事实的精确性和可信性。数词是由两大部分构成的，即基数词和序数词，而其他数字表示法如分数、小数等均由这两大部分的不同组合构成。一、基数词：一、基数词：表示数目的词为基数词，它的构成如下表：范 围特 点实 例112无规律 one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve1319以teen为结尾 thirteen
2、,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen2090以ty结尾 twenty,thirty,forty,fifty,sixty,seventy,eighty,ninety2199十位与个位之间要加连字符“-”twenty-five,sixty-five,ninety-nine101999百位与十位之间通常用and three hundred and twenty-five（美语中常将and省略）千以上 6275six thousand two hundred and seventy-five；1200twelve hundred二、
3、序数词：二、序数词：表示顺序的数词为序数词，它的构成如下表：范 围特 点实 例119各基数词尾加th其中七个例外：first,second,third,fifth,eighth,ninth,twelfth,其余，如：four fourth,six sixth,nineteen nineteenth20,3090把y变i后加eth twentieth,fortieth,ninetieth21以后多位数最后一个数用序数词，其余用基数词 21st twenty-first,110th one hundred and tenth三、数词的用法三、数词的用法（一）（一）.英语中年月日、点钟、序数词、分数
4、词、算式列表英语中年月日、点钟、序数词、分数词、算式列表示例示例英语表示法英语表示法2001.6.30June 30,2001/30 June,2001/30th June,20017：25seven twenty-five/twenty-five past even12:54twelve fifty four/six to one9:15nine fifteen/a quarter past nine2:30two thirty/half past two21:50twenty-one fifty/9:50p.m.第21twenty-first第123one hundred and twen
5、ty-third1/2a half 22/5two and two-fifths 20%20 percent第七路公共汽车Bus Number Seven第201房间Room 201人民路153号153 Renmin Road 4+8=12 Four plus eight is twelve.11-7=4Eleven minus seven is four.65=30Six times five is thirty.205=4Twenty divided by five is four.ABA is more than B.ABA is less than B.ABA approximatel
6、y(近似地,大约)equals to B.ABA is not equal to B.（二）约数表示法列表（二）约数表示法列表含义含义英语表达英语表达例句例句大于某数大于某数more than He has lived here for more than twenty years.overShe is over fifty.or moreTherere thirty people or more in the meeting-room.小于某数小于某数less thanI have less than(not more than)fifty dollars.underChildren und
7、er seven are not allowed to enter.belowHe would not sell it for below a hundred fifty dollars.or lessThe coat might cost him sixty dollars or less.大约（某数）大约（某数）nearlyShe is nearly fifty now.almostIts almost three oclock.up to Up to ten men can sleep in this tent.or He spent four or five days writing
8、the article.or so The distance is twenty miles or so.aboutI visited that village about three years ago.someTheir team has some four or five players.more or lessThe container can hold more or less twenty pounds of water.around/roundLets make it round/around eight oclock.（三）不定数量词（三）不定数量词“多多”的表示法列表的表示法
9、列表被修饰名词的数被修饰名词的数英语表达英语表达汉译汉译修饰可数名词修饰可数名词dozens of 几十、许多scores of 许多many,a good(great)many,many a(修饰单数可数名词)许多、大量hundreds of 数以百计thousands of,thousands upon thousands of 成千上万millions of 数百万billions of 亿万修饰不可数名词修饰不可数名词much,a great(good)deal of,a large amount of,large amounts of 许多、大量可同时可同时修饰可数名词修饰可数名词和
10、和不可数名词不可数名词a lot of/lots of,plenty of,a large quantity of,large quantities of 许多、大量【强化练习强化练习】I.单项选择单项选择1.I was born _.A.on July 3rd,1981 B.in July 3,1981 C.on July 3,1981 D.in July 3rd,1981在具体日期前要用介词on，表示日期的数词也要用序数词。2.Mr.Smith _ me to buy several _ eggs for the dinner.(2005年上海)A.asked,dozen B.sugges
11、ted,dozens of C.had,dozen D.persuaded,dozens of several修饰数词时，后面的数词用单数。ask sb.to do sth.叫做某事。persuade sb.to do sth.说服某人做某事。A A 3.It is reported that the floods have left about _ people homeless.(2007年浙江)A.two thousand B.two-thousands C.two thousands D.two thousands of当表示整数的数词被基数词修饰时用单数形式，例如，two hundr
12、ed,three million等等。除非表示笼统才用复数，例如hundreds of,thousands of,dozens of等等。4._ of the land in that district _ covered with trees and grass.(2006年上海)A.Two fifth,is B.Two fifth,are C.Two fifths,is D.Two fifths,are 分数的表达方法，如果分子大于一，分母就要用复数形式，本题的主语应该是整块的land，因此看做是一个整体，后面谓语动词用单数。A C 5.The hero of the story is a
13、n artist in his _.A.thirtieth B.thirty C.thirtys D.thirties某人几十岁时的表达法用in ones+数词的复数形式。6.He served in the army in _when he was in _.A.1990s；his twenties B.the 1990s；the twentiesC.1990s；his twenties D.the 1990s；his twenties表年代用in the+年分，可以在年份直接+s，或用s两种方式。例如：in the 1840s/in the 1840s。D D 7.South of the
14、 equator,81%of the surface of the earth _ water.A.is B.are C.was D.were本题考查分辨主语的能力，地球上81%的表面都是水，虽然前面说到有81%，但地球的表面我们要看作是一个整体，谓语动词用单数。8.Youll have to spend _ writing your report here.A.one day or two days B.one day or twoC.a day or two D.two days or one表示一两天我们可以用one or two days=a day or two。A C 9.This
15、 river is _ that one.A.as three times long as B.the third time asC.three times the length of D.three times longer倍数修饰比较级要放在比较级的前面，本题没有出现than，因此不选D。10.Americans eat _ vegetables per person today as they did in 1910.(2002年上海春季)A.more than twice B.as twice as many C.twice as many as D.more than twice a
16、s many 本题也是考查倍数的表达法，倍数要放在前面，因后面已经出现as，因此选项C就不能选。C D II.填空填空1.Although he is_(70岁),he looks very healthy.2.He was born _(20世纪70年代).3.People in _ fifties are going to retire from their jobs.4.In her _(forty),she was determined to write a book.5.About three _(five)of the workers in that company are you
17、ng people.seventy years old in the 1970s/in the 1970s their forties fifths 6.Two _(three)of the island is covered with ice.7.Their office is on the _(twelve)floor.8.Please gave me a _(two)chance,I am sure I can make it.9.Its _(6个小时的行程).10.About _(三分之一)of the teachers in our school are young people.thirds twelfth second a six-hour journey/a six hours journey one third The END
