英语中倍数表达方式归纳.pptx

倍数英语中“倍数”的表达方式归纳 Thehouserentisexpensive.IvegotabouthalfthespaceIhadathomeandImpaying_here.A.asthreetimesmuchB.asmuchthreetimesC.muchasthreetimesD.threetimesasmuch正确答案为D第1页/共22页倍英语中“倍数”的表达方式归纳数一、用 times 表示倍数（一般限于包括基数在内三倍或三倍以上的数。表示两倍的数，一般用 twice）。其句式有：1.“times 形容词/副词的比较级 than”例如：Line AB is three times longer than line CD.线段 AB 是（线段）CD 的三倍长。This hall is five times bigger than our classroom.这个大厅比我们的教室大 5 倍。第2页/共22页 LineABislong.LineABislongerthanlineCD.LineABisthreetimeslongerthanlineCD.Thishallbig.Thishallbiggerthanourclassroom.Thishallisfivetimesbiggerthanourclassroom.第3页/共22页倍英语中“倍数”的表达方式归纳数2.“times+as+形容词/副词的原级as”例如：Thistableisthreetimesaslongasthatone.这张桌子是那张桌子的三倍长。Thisdictionaryisfivetimesasthickastheoneyouborrowedfromthelibrary.这本词典的厚度是你从图书馆借的那本（厚度）的5倍。第4页/共22页 Thistableislong.Thistableisaslongasthatone(is).Thistableisthreetimesaslongasthatone(is).Thisdictionarythick.Thisdictionaryisasthickasthat one(is).Thisdictionaryisfivetimesasthickasthat one(is).Thisdictionaryisfivetimesasthickasthe one you borrowed from the library(is).第5页/共22页倍英语中“倍数”的表达方式归纳数3.“times+the+名词（如：size，height，weight，length，width等）of”例如：Theearthis49timesthesizeofthemoon.地球的体积是月球的49倍。Thisriveristhreetimesthedepthofthatone.这条河是那条河的三倍深。第6页/共22页倍英语中“倍数”的表达方式归纳数4.“times+more名词than”例如：Heearnsfivetimesmoremoneythanhedidtenyearsago.他现在挣的钱比十年前挣的多5倍。Therearetwicemorestudentsinourclassthanintheirs.我们班的学生人数比他们班多两倍。第7页/共22页倍英语中“倍数”的表达方式归纳数5.“times+asmany（或much）名词as”例如：Weveproducedtwiceasmuchcottonthisyearas（wedid）tenyearsago.今年我们生产的棉花比十年前多了一倍。（汉语中的多一倍实际上也指两倍一样多。）Hehasgotthreetimesasmanybooksashissister.他拥有的书的数量是他妹妹的3倍。第8页/共22页 Weveproducedmuchcottonthis yearWeveproducedasmuchcottonthis yearas（wedid）ten years ago.Weveproducedtwiceasmuchcottonthis yearas（wedid）ten years ago.Hehasgotmanybooks.Hehasgotasmanybooksashissister(has).Hehasgotthreetimesasmanybooksashissister(has).第9页/共22页倍英语中“倍数”的表达方式归纳数6.“times+what从句”例如：Thelengthoftheroadisfourtimeswhatitwasthreeyearsago.这条路的长度是三年前的4倍。Thepriceofthemeatistwicewhatitwaslastyear.肉价是去年的两倍。第10页/共22页倍英语中“倍数”的表达方式归纳数7.“times+upon（或over）”例如：Thesizeofthesunisamilliontimesoverthatoftheearth.太阳的体积比地球的体积大一百万倍。Heisthreetimesuponyourage.他的年龄是你的4倍（或：比你的年龄大3倍）。第11页/共22页倍英语中“倍数”的表达方式归纳数8.“+by+times”例如：Comparedwithlastyear，ourcoaloutputhasincreasedbythreetimes.与去年相比，我们的煤产量增长了3倍。Hisspeedisfasterthanminebyfourtimes.他的速度比我的快4倍。第12页/共22页倍英语中“倍数”的表达方式归纳数9.“times+comparedwith被比较对象”例如：Thenumberofthestudentsinourschoolhasincreasedthreetimescomparedwith1980.我们学校的学生人数比1980年增加了3倍。第13页/共22页倍英语中“倍数”的表达方式归纳数10.“times+thatof+被比较对象”例如：InthisworkshoptheoutputofJulywas3.5timesthatofJanuary.这个车间七月份的产量是元月份的3.5倍。第14页/共22页倍英语中“倍数”的表达方式归纳数二、用分数、百分数表示倍数。例如：Theboxisone-thirdbiggerthanthatone.这个盒子比那个盒子大三分之一。Lastyeartheoutputvalueofindustrywas59percenthigherthanthatof1976.去年工业产值比1976年增长了59。MycommandofEnglishisnothalfsogoodasyours.我英语掌握得还不及你的一半儿好。第15页/共22页倍英语中“倍数”的表达方式归纳数三、用 again（一倍）double（两倍），triple（三倍）fourfold（四倍）等词表示倍数。例如：My Aunt is as old again as I am.我姑姑的年龄比我大一倍。The top-brand clothes are often sold as double the normal price here.这里名牌衣服的售价经常比正常的售价高一倍。The new work procedure tripled the output.新工艺使产量增加两倍。The output of grain increased fourfold.粮食产量增加了三倍。第16页/共22页巩固练习 Americanseat_vegetablesperpersontodayastheydidin1910.A.morethantwiceB.astwiceasmanyC.twiceasmanyasD.morethantwiceasmanyKey：D第17页/共22页巩固练习 Paperproducedeveryyearis_theworldsproductionofvehicles.A.thethreeweightofB.threetimestheweightofC.asthreetimesheavyasD.threetimesasheavierasKey：B第18页/共22页巩固练习 WiththehelpoftheGermanexperts，thefactoryproduced_carsin1993astheyearbefore.A.astwicemanyB.asmanytwiceC.twiceasmanyD.twicemanyasKey：C第19页/共22页巩固练习 Thisshipmeasures_thatone.A.astwiceaslongB.astwicelongasC.twicelongasD.twiceaslongasKey：D第20页/共22页巩固练习 Afterthenewtechniquewasintroduced，thefactoryproduced_tractorsin1988astheyearbeforeA.astwicemanyB.asmanyasC.astwiceasmanyD.twiceasmanyKey：D第21页/共22页感谢您的观看！第22页/共22页