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Section Ⅱ Grammar形容词和副词的比较级和最高级用形容词和副词表示比较级和最高级的几个重要句型：1 ．“比较级形式＋ than” 意为“比……更”That’s easier said than done. 说比做容易。It is much cheaper to post a long report than to fax it.邮寄一份长篇报告比发传真便宜得多。2 ．“ ...as ＋原级＋ as...” 意为“和……一样”The building is as high as the tower.这幢建筑和那座塔一样高。This picture is as beautiful as that one.这幅画和那幅一样漂亮。What I did was as good as that of a normal person.我所做的和一个正常人做的一样好。3 ．“ ...not as/so ＋原级＋ as...” 意为“不及……”Luckily the weather was not so/as wet as it is today.幸运的是，那天天气没有今天潮湿。My dictionary is not as/so useful as yours.我的词典不如你的有用。4 ．表示倍数的三个句型(1) 表示 A 是 B 的几倍时，主要有下面几种表达方式：① 倍数＋形容词 ( 或副词 ) 的比较级＋ than② 倍数＋ as ＋形容词 ( 或 much) 原级或副词原级＋ as③ 倍数＋ the size(length ， width ， height...) of This room is twice bigger than that one.这个房间比那个房间大两倍。This bridge is three times as long as that one.＝ This bridge is three times the length of that one这座桥是那座的 3 倍长。(2) 用名词表示“量”的倍数时，则用以下两个句型：① 倍数＋ more ＋名词 ( 可数 / 不可数 ) ＋ thanThere are four times more books in our library than in yours.我们图书馆藏书 ( 数量 ) 是你们图书馆藏书的四倍。( 我们图书馆藏书比你们的多三倍 ) We have produced twice more grain this year than we did last year.我们今年生产的谷物比去年增长了一倍。 ( 是去年的两倍 ) ② 倍数＋ as many( 或 much) ＋名词＋其他＋ asAfter the technique was introduced ， the factory produced twice as many tractors in 2009 as the year before. 采用新技术以后，那个工厂2009 年生产的拖拉机是前一年 (2008 年 ) 的两倍。( 比前一年增长一倍 )There is three times as much water in this ...