倍数表达法是历届高考的热点。当我们要表达甲是乙的几倍时,通常可使用以下句型:1.倍数+as+形容词或副词的原级+as+其它。这种结构又常演变成下列两类:①倍数+as+many+可数名词复数+as;②倍数+as+much+不可数名词+as。如:ThereareseventimesasmanypeopleasIexpected.是我预料的人数的七倍。Thereisfivetimesasmuchcoffeeinthisglassasinthatone.这个杯子里的咖啡是那个杯子里的五倍。2.倍数+形容词(或副词)的比较级+than+其它。如:Thehallisfivetimesbiggerthanourclassroom.这个大厅的面积比我们教师大五倍。3.倍数+thesize/height/length/width.etc.+of+其它。如:Thisroadissixtimesthelengthofthatone.这条路是那条路的六倍长。4.计量名词+of+名词+be+倍数+that+of+其它。如:Thesizeofthenewlybroadenedsquareisfourtimesthatofthepreviousone.新扩建的广场为以前的四倍大。5.倍数+what从句。如:Theproductionisnowthreetimeswhatitwastenyearsago.现在的产量是十年前的三倍。6.倍数+more+名词+than+其它。如:Thereareninetimesmorebooksinhisbagthaninyours.他书包里的书比你书包里的书多九倍。7.其它表达。如:She'stwice/doublemyage.她的年龄是我的两倍。Theaverageincomeofthestaffhasbeenincreasedby50percentcomparedwithlastyear.与去年相比,该单位职工的收入已增加了50%。Herunsfasterthanmebythreetimes.他跑得比我快三倍。{考查方向}1)倍数在句中的位置一般放在第一个as前面或比较级前面或名词前面。2)用times表示倍数时,一般只限于表示包括基数在内的三倍或三倍以上的数。表示两倍可以用twice或double,一倍用once.【重点归纳】除了我们初中所学的形容词的比较级的用法,本模块我们主要归纳几种句式结构:(一)含倍数的比较句型1.倍数+as+形容词原级+as…。如:Thisbridgeisthreetimesaslongasthatone.Hisroomistwiceasbigasmine;inotherwords,mineisonlyhalfasbigashis.【特别提醒】“as…as”中间加入名词的句式:●倍数+as+形容词+a/an+可数名词单数+as…●倍数+as+形容词+可数名词复数/不可数名词+as…。如:Lastyearmybrothertwiceasbiganewhouseasmine.HehascollectedmorethanthreetimesasmanystampsasI(have).Ispenttwiceasmuchtimeonmystudiesasyoudid.【难点点拨】该结构的省略:通常省略形容词后面的名词及比较的部分。如:Ihavetotransfer(转乘)busessoIspendtwiceasmuch(moneyasothers)forthebuseveryday.2.倍数+形容词比较级+than…。如:Thisstreetisfourtimesshorterthanthatone.Fearofdangeristenthousandtimesmoreterrifyingthandangeritself.【特别提醒】倍数+形容词比较级+名词+than…。如:Heearnsfivetimesmoremoneynowthanhedidtenyearsago.Therearethreetimesmorebooksinourlibrarythaninyours.3.倍数+the+名词(如size,height,weight,length,width,depth等)+of…。如:Thiswellisthreetimesthedepthofthatone.4.另外,请注意下面两种说法:(1)倍数+what从句。如:Thelengthoftheroadisfourtimeswhatitwasthreeyearsago.(2)倍数+thatof+被比较对象。如:Airmailchargesalmosttwiceorthreetimesthatofanormalmail.(二)其它句式1.比较级+and+比较级表示越来越…。如:Thingsaregettingbetterandbettereveryday.Ourcountryisbecomingmoreandmorebeautiful.2.the+比较级…,the+比较级…表示“越…,就越…”。如:Themoreyouhave,themoreyouwant.Themoreamanknows,thelessheknowsheknows.【知识扩展】在形容词比较级前可以加alittle,abit,alot,no,any,much,far,even,still等副词(组表示程度的加深。如:Theresultismuchbetterthanweexpected.Actually,healthisfarmoreimportantthanwealth.