形容词和副词比较级、最高级的用法
1.原级的构成和用法
l)构成:形容词,副词的原级形式是形容词,副词的原形.
2)用法:表示双方在程度,性质,特征等某方面相等时,用“ as 十原级形容词或副词十 as”的构造;表示双方不相等时,用“ (精品文档请下载)
not so (as)十原级形容词或副词十 as”的构造;表示一方是另一方的假设干倍时,用“倍数十 as十原级形容词或副词十 as”的构造. (精品文档请下载)
例如:
This building looks not so (as) high as that one. Ms.Sun speaks English as fluently as you. This room is three times as large as that one. 2.比较级和最高级的构成和用法 1)比较级和最高级的构成: (精品文档请下载)
①单音节形容词和少数以- er,— ow结尾的形容词和副词加“ er”,“ est”.例如:
great greater greatest narrow narrower narrowest fast faster fastest clever cleverer cleverest (精品文档请下载)
②以 e结尾的单音节形容词和副词后和少数以— ble,— ple结尾的双音节形容词和副词后,加“ r”,“ st”.例如: (精品文档请下载)
large larger largest able abler ablest simple simpler simplest (精品文档请下载)
③以一个辅音结尾的单音节形容词,其前的元音字母发短元音时,该辅音字母要双写,然后加“ er”,“ est”.例如: (精品文档请下载)
hot hotter hottest ④以辅音加 y结尾的形容词和少数不是形容词加 ly构成的副词要将 y改为 i,再加“ er”,“est",例如: (精品文档请下载)
easy easier easiest early earlier earliest happy happier happiest (精品文档请下载)
⑤一般双音节词、多音节形容词和副词在原级前加 more或most.例如: beautiful more beautiful
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