倍数表达法(附易错高考题).ppt

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1、倍数表达法、两倍用twice/double.三倍及以上用...times.1．A＋is＋倍数(…times}＋比较级＋than＋BThetrainrunssixtimesfasterthantheboat.火车比轮船快六倍。“…times+more＋名词＋than…”Heearnshedidtenyearsago.他现在挣的钱比十年前挣的多5倍fivetimesmoremoneythan2．A＋is＋倍数(…times)＋as＋原级＋as＋BThisgardenistentimesaslargeastha

2、tone.这个花园是那个花园的十倍大。.“…times+asmany（或much）＋名词＋as…”例如：We'veproducedthisyearas（wedid）tenyearsago.今年我们生产的棉花比十年前多了一倍twiceasmuchcotton3．A＋is＋倍数(…times)＋thesize(height,length...)＋of＋BTheirschoolisalmostfivetimesthesizeofours.TheirschoolisalmostoursTheirschoolisa

3、lmost___________________ours.他们的学校几乎是我们学校的五倍大。fivetimesasbigasfivetimesbiggerthan“…times+what从句”例如：这条路的长度是三年前的4倍。Thelengthoftheroadisfourtimesthreeyearsago.IsawtheamounthegavemewasthreetimewhatIhadspentonthegasandthegift.whatitwas易错题集锦1、（2002上海春）Americans

4、eat________vegetablesperpersontodayastheydidin1910.A.morethantwiceB.astwiceasmanyC.twiceasmanyasD.morethantwiceasmanyD此题考查as...as表达法，第二个as已经给出。2、Tenyearsagothepopulationofourvillagewasthatoftheirs。（2008.陕西）A.astwicelargeasB.twiceaslargeasC.twiceasmuchasD.

5、astwicemuchas答案B.1、表示人口“多”“少”,用“large”或“small2、、询问某国、某地有多少人口时,用Howlarge"What...?"例如:-isthepopulationofyourhometown?你们家乡有多少人口?--WhatisthepopulationofCanada?加拿大的人口有多少?3、Accordingtostatistics，amanistodieofskincancerasawoman。A.morethantwiceaslikelyB.t

6、wicemorethanaslikelyC.aslikelymorethantwiceD.twicemorethanlikelyas答案A.。4、(09四川19)Myuncle’shouseinthedowntownareaismuchsmallerthanours,butitistwice_______expensive.A.asB.soC.tooD.very答案A。考查as...as结构的省略问题。6、（甘肃省皋兰一中2010届高三上学期第三次月考）Eventhoughyouoffered______

7、_youhavejustoffered,1wouldnotsellittoyou.A.themoneytwicethatB.twicethemoneythatC.twicethemoneywhatD.themoneythattwice答案B。that引导的定语从句。若选择c，去掉选项中的money即可。8．（安徽省两地2010届高三第一次联考）Muchtohissurprise，heinvitedonlytwentyfriendstothedinner，butcame．A．twiceasmanyasB．a

8、smanyastwiceC．twiceasmanyD．twicemorethan答案C。asas结构的省略问题。第二个as为介词。9、（山西省平遥中学2009年9月高三高补摸底考试）---Whatdoesthemodelplanelooklike?---Well,thewingsoftheplaneare____ofitsbody.A.morethanthelengthtwiceB.twicemorethanthelength