原级比较的用法

1. 原级比较由“as+形容词或副词(或再加名词或短语)+as ”构成“原级相同”比较句，表示两者比较；其否定式，即“程度不及”比较句型为“not so(as) +形容词或副词+as”，而且as…as结构前可用just， almost， nearly， quite等表示程度的词修饰

1) Walking briskly for thirty minutes will burn as many calories as _________.
　　〔A〕 to run for fifteen minutes
　　〔B〕 running for fifteen minutes
　　〔C〕 you run for fifteen minutes
　　〔D〕 fifteen?minute walking

2) The gorilla(大猩猩)， while 〔A〕 not quite as curious than 〔B〕 the chimpanzee(黑猩猩)， shows more persistence 〔C〕 and memory retention(记忆力) in solving 〔D〕 a problem.

3) Alaska is twice 〔A〕 as larger 〔B〕 as 〔C〕 the next largest 〔D〕 state， Texas.

2. “as (so)+名词+as+名词”进行名词比较，这时一般情况下有一个表示原级的比较词，但如果第一名词前出现了形容词修饰该词或出现副词修饰谓语，应当用so而不用as

4) Thomas Jefferson’s achievements as an architect rival his contributions a politician.
　　〔A〕 such
　　〔B〕 more
　　〔C〕 as
　　〔D〕 than

5) I should say Henry is not much a writer as a reporter. (88年考题)
　　〔A〕 that
　　〔B〕 so
　　〔C〕 this
　　〔D〕 as

3. 表示“是……几倍”时用“twice; three times等 + as 形容\副词as...” eg. 1)This book costs twice as much as that one. 这本书的价钱是那本书的两倍。

2)He has four times as many books as I have 他拥有的书是我拥有的四倍

比较级

1. 比较级由“形容词(副词)比较级+than+…，”构成表示在两者中间一方比另一方“更加…”。连词than后可接句子，也可接名词、代词、名词短语、介词短语、动词、动词不定式、?ING结构和?ED结构，有时也可省去than。

6) Natural mica(云母) of 〔A〕 a superior 〔B〕 quality is cheapest 〔C〕 to obtain than synthetic 〔D〕 mica.

7) She is older than .
　　〔A〕 any other girl in the group
　　〔B〕 any girl in the group
　　〔C〕 all girls in the group
　　〔D〕 you and me as well as the group

8) Josephine McCrackin joined 〔A〕 the “Santa Cruz Sentinel” in 1905 and， until her death fifteen years late 〔B〕 ， remained 〔C〕 active in journalistic 〔D〕 work.

2. 注意than前后两项相比较的人或事物要一致

9) The purpose of the research had a more important meaning for them than .
　　〔A〕 ours
　　〔B〕 with us
　　〔C〕 for ours it had
　　〔D〕 it did for us

10) Sound travels air.
　　〔A〕 faster through water than through 〔B〕 faster than through water and
　　〔C〕 through water faster and〔D〕 where it is faster through water than through

11) Gerbrand von den Feckhout， one of Rembrand’s pupils， followed 〔A〕 the style of his teacher so implicitly that 〔B〕 his paintings 〔C〕 are sometimes confused with his master 〔D〕 .

最高级

1. 最高级用于三者以上比较，形容词的结构形式是“定冠词+形容词最高级+名词+表示范围的短语（地点）或从句”(如all， of all， of the tree， in the world， that has ever taken place等)或“定冠词+形容词最高级+of+人群”

12) The more 〔A〕 fearsome of all the 〔B〕 animals in 〔C〕 the Western 〔D〕 Hemisphere is the grizzly bear.

13) Of all economic 〔A〕 problems， inflation continues to be 〔B〕 a 〔C〕 most significant in its daily impact on 〔D〕 people and business.

14) __________， the most familiar to general public is the criminal jurisdiction.
　　〔A〕 All the activities
　　〔B〕 The activities
　　〔C〕 Of all the activities
　　〔D〕 It is the activities

2. 副词的最高级与形容词最高级的区别在于最高级可以不用定冠词the