高考英语（人教新课标）一轮复习语法讲解课件：数词、形容词和副词 5.30倍数表达法.ppt
30倍数表达法法难难点点自自测测Its said that the power plant is now _ large as what it was.2013.安徽安徽A.twice as B.as twice B.C.twice much D.much twiceA。考查倍数表达法。句意。考查倍数表达法。句意:据说这个据说这个发电厂现在是以前的两倍大。倍数表发电厂现在是以前的两倍大。倍数表达法有多种达法有多种,此处考查的是此处考查的是“倍数词倍数词+asas”结构结构,故选故选A。难难点点诠诠释释两倍用两倍用twice,3倍或倍或3倍以上用倍以上用times。倍数表达方式有：。倍数表达方式有：times+形容词形容词/副词的比较级副词的比较级+thanThis street is three times wider than that one.这条街比那条街宽这条街比那条街宽3倍。倍。times+as+形容词形容词/副词的原级副词的原级+asThis dictionary is five times as thick as the one youborrowed from the library.这本词典的厚度是你从图书馆借的那本的这本词典的厚度是你从图书馆借的那本的5倍。倍。30倍数表达法法难难点点诠诠释释两倍用两倍用twice,3倍或倍或3倍以上用倍以上用times。倍数表达方式有：。倍数表达方式有：times+the+名词（如名词（如:height,weight,length,size,width等）等）+ofThis river is three times the depth of that one.这条河的深度是那条河的这条河的深度是那条河的3倍。倍。times+more+名词名词+than He earns five times more money than he did ten years ago.他现在挣的钱比十年前挣的多他现在挣的钱比十年前挣的多5倍。倍。30倍数表达法法难难点点诠诠释释两倍用两倍用twice,3倍或倍或3倍以上用倍以上用times。倍数表达方式有：。倍数表达方式有：times+as many（或（或much）+名词名词+asShe spent half as much money as you.她花掉的钱是你花掉的一半。她花掉的钱是你花掉的一半。times+what 从句从句The length of the road is four times what it was three years ago.这条路的长度是三年前的这条路的长度是三年前的4倍。倍。30倍数表达法法难难点点诠诠释释两倍用两倍用twice,3倍或倍或3倍以上用倍以上用times。倍数表达方式有：。倍数表达方式有：+by+timesCompared with last year,our coal output has increasedby three times.与去年相比与去年相比,我们的煤产量增长了我们的煤产量增长了3倍。倍。times+up on(或或over)The size of the sun is a million times over that of the earth.太阳的体积比地球的体积大一百万倍。太阳的体积比地球的体积大一百万倍。30倍数表达法法难难点点诠诠释释两倍用两倍用twice,3倍或倍或3倍以上用倍以上用times。倍数表达方式有：。倍数表达方式有：times+up on(或或over)The size of the sun is a million times over that of the earth.太阳的体积比地球的体积大一百万倍。太阳的体积比地球的体积大一百万倍。+by+timesCompared with last year,our coal output has increasedby three times.与去年相比与去年相比,我们的煤产量增长了我们的煤产量增长了3倍。倍。30倍数表达法倍数用法秘诀倍数用法秘诀倍数表达靠前站，原级比较跟后面；倍数表达靠前站，原级比较跟后面；假如倍后连名词；名词前面用定冠。假如倍后连名词；名词前面用定冠。难难点点诠诠释释两倍用两倍用twice,3倍或倍或3倍以上用倍以上用times。倍数表达方式有：。倍数表达方式有：times+that of+被比较对象被比较对象In this factory the output of July was 3.5 times that of January.这家工厂七月份的产量是元月份的这家工厂七月份的产量是元月份的3.5倍。倍。30倍数表达法法This restaurant wasnt _ that restaurant we went to.A.half as good as B.as half good asC.as good as half D.good as half as典典型型例例题题A。这家饭店还不如我们以前去的那家饭店。这家饭店还不如我们以前去的那家饭店的一半好。本句所用到的倍数表达法的结构的一半好。本句所用到的倍数表达法的结构是是“倍数词倍数词+asas”。在此结构中。在此结构中,应应把倍数放在把倍数放在asas的前面的前面,故故A项正确。项正确。30倍数表达法疑疑难难突突破破 高考中高考中“倍数表达法倍数表达法”的考查点：一是的考查点：一是“倍数倍数表达法表达法”中的比较结构中的比较结构;二是二是“倍数表达法倍数表达法”中的中的“倍数倍数”的位置。的位置。要解答好此类题目要解答好此类题目,考生要牢记考生要牢记“倍数表达法倍数表达法”的三种结构的三种结构,做题时一定要注意无论用哪种结构做题时一定要注意无论用哪种结构,“倍数倍数”总是放在最前面。总是放在最前面。30倍数表达法法即即时时突突破破Its reported that people eat _vegetablesper person today as they did ten years ago.A.as twice many B.as twice as manyB.C.Twice as many as D.twice as many2 2D。此处考查的是。此处考查的是“倍数倍数+as+many+名名词词+as”结构，故结构，故A、B两项错误。题干两项错误。题干中已有第二个中已有第二个as，故，故C项错误。项错误。30倍数表达法法即即时时突突破破The pork price is high.Ive got about half the amount I had at home and Im paying _here.A.as three times much B.as much three timesB.C.three times as much D.much as three times3 3C。本题是对。本题是对“倍数词倍数词+asas”结构的考结构的考查。这里的猪肉价格高。我买的肉大约是在国查。这里的猪肉价格高。我买的肉大约是在国内购买量的一半，在这里却要付出三倍的钱。内购买量的一半，在这里却要付出三倍的钱。30倍数表达法法
