Section Ⅲ Grammar——比较等级语 境 自 主 领 悟先观察原句后自主感悟1.The book is as interesting as that one.2.The physics lesson was a lot more interesting than the chemistry lesson.3.The earth is twice as large as the moon.4.The earth is fortynine times larger than the moon.5.The stone bridge is twice the length of the wood one.6.It's getting brighter and brighter！7.The closer you are, the more you'll see.1.例句①为同级比较，其结构为：as ＋形容 词原形＋ as 。2.例句②为比较等级，其结构为：比较级＋than...。3.例句③④⑤为倍数表达法，其结构分别是：(1)倍数＋as＋形容词原形＋as; (2)倍数＋形容词比较级＋than; (3)倍数＋the＋名词＋of...4.例句⑥⑦是比较级的特殊句式：其中例句⑥的结构是“比较级＋ and ＋比较级 ”；例句⑦的结构是“the ＋比较级 ， the ＋比较 级”。一、比较级的基本用法1．同级比较：...as＋形容词/副词＋as...“和……一样……” ；否定式为：...not as/so＋形容词/副词＋as...“和……不一样； 不如……” Tom runs as fast as Mike.汤姆和迈克跑得一样快。Wealth is not so important as health.财富不如健康重要。[名师点津] 在此句式中，若形容词原级后面跟单数可数名词，则应注意冠词与形容词的位置关系，即 as＋形容词＋a/an＋单数名词＋as “和……一样……”。He is as clever a boy as his brother.他是和哥哥一样聪明的男孩子。2．比较级：形容词/副词比较级＋than...表示 “比……更……” 。My computer is more expensive than hers.我的电脑比她的贵。Robert jumps higher than any of the others.罗伯特比其他任何人跳得都高。[名师点津] (1)使用比较级时比较的对象应该相同。为了简洁起见， 可用 that 代替前面出现的不可数名词或可数名词单数， those 代替可数名词复数。正：The weather of Shanghai is warmer than that of Beijing.误：The weather of Shanghai is warmer than Beijing.上海的天气比北京的天气暖和。(2)比较双方如果一方在程度或数量上超过另一方时， 可在比较级前加上副词修饰语。常见的有：much, a little, a bit, a lot, far, by far, even, still, rather, any(疑问句、...
