资源描述：
《高三英语词汇精讲：第四讲 数词》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、由武汉巨人教育网（www.whjuren.com）整理高三词汇精讲第四讲数词知识点归纳Ⅰ.基数词表示数目的词为基数词，注意其写法1-20：one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelvethirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen，twentyⅡ.序数词1.序数词的写法1-19：各基数词尾加th(其中七个例外：first,second,third,fifth,eighth,ninth,twelfth)20
2、,30~90:把y变i后加eth(twentieth,fortieth,ninetieth)21以后多位数:最后一个数用序数词，其余用基数词(21st—twenty-first,110th—onehundredandtenth)2.序数词的用法表示第几个时，序数词前面加定冠词；如表示“又一，再一”，前面加不定词：thethirdchapter第三章；athirdchance又一个机会Ⅲ.数词的用法1.英语中年月日、点钟、序数词、分数词、算式列表2.不定数量词“多”的表示法Ⅳ.倍数表达法倍数+as+形容词+as…Wehaveproducedthreetime
3、sasmanycomputersaswedidlastyear.倍数+as+the+名词+of…ChinaisalmosttwicethesizeoftheMexicoinarea.倍数+what从句…Thelengthoftheroadistwicewhatitwasthreeyearsago.倍数+比较级+than…HehasthreetimesmorebooksthanIhave.比较级+than…+by+倍数程度…Thelineislongerthanonebytwice.随堂练习1.Two__diedofcoldlastwinter.A.hund
4、redsoldpeopleB.hundredoldpeopleC.hundredsoldpeoplesD.hundredoldpeoples2.Hewasonlyin__atthetime.A.his20'sB.the20'sC.histwentiesD.thetwenties3.Thetwogreatmenwrotethoselettersin__.A.1870'sB.1879sC.the1870'sD.the18704.IwonderifIcanaskhim__time.A.fourB.fourthC.thefourthD.afourth5.MrSmi
5、th___metobuyseveral__eggsforthedinner.A.asked,dozenB.suggested,dozensofC.had,dozenD.persuaded,dozensof6.Itwasin1939that__brokeout.A.WorldWarSecondB.theSecondWorldWarC.SecondWorldWarD.WorldWarII7.You'llhavetospend__writingyourreporthere.A.onedayortwodaysB.onedayortwo 由武汉巨人教育网（www.w
6、hjuren.com）整理C.adayortwoD.twodaysorone8.Hecutthecake__.A.inhalvesB.inhalfC.intohalvesD.intohalf9.Theearthisnearly__themoon.A.50timethesizeofB.50timesthesizeofC.50timesassizeasD.50timesasthatof10.Inthesummercamp,therewere______boys.A.threetimesasmanygirlsasB.asmanythreetimesgirlsas
7、C.threetimesgirlsasmanyasD.asmanygirlsasthreetimes11.__ofthepopulationherearepeasants.A.20percentsB.20percentC.the20percentD.the20percents12.It'sabout__,thethicknessofahumanhair.A.two-fifteenthB.two-fifteenthsC.twofifteenD.twofifteens13.Thepriceofsomegoodswasreduced__.A.by18percen
8、tB.to18percentC.at18percentD.for1
