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 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〕 . 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
1，修饰形容词
The room is small but very quiet.
这房间虽小，可是很安静。
2，修饰副词
He played this old man very well.
他演这位老人演得很好。
3，修饰动词
She appeared at the party but left quickly.
她在聚会上露面，但很快就离开了。
He unpacked the doll carefully from its box.
他小心地将玩偶从盒中取出来。
4，修饰整个句子
Fortunately, you have the power to change all that.
幸运的是，你还有能力去改变所有这一切。
More importantly, we can share the information with all of you.
更重要的是，我们可以和大家分享所有这些信息。本回答被网友采纳
副词的用法:
我们将副词分为三大类：disjunct、adjunct、conjunct（词根dis-、ad-、con- 分别有分离、附属、连接之意）。
副词 是一种用来修饰动词、形容词、全句或其他副词的词，说明时间、地点、程度、方式等概念。
1、修饰动词时，一般该副词放在动词前面；
2、修饰形容词或者其他副词时，也是放在形容词和其他副词的前面；
3、修饰句子时，可以单独放在句首，用逗号隔开。通常表示实践和程度的副词有这种用法。
副词的位置:
副词在句子中的位置相比形容词更加灵活——不像形容词须紧挨着被修饰结构，副词有时可以与被修饰结构相隔一段距离。
本回答被网友采纳我们将副词分为三大类：disjunct、adjunct、conjunct（词根dis-、ad-、con- 分别有分离、附属、连接之意）。
副词 是一种用来修饰动词、形容词、全句或其他副词的词，说明时间、地点、程度、方式等概念。
1、修饰动词时，一般该副词放在动词前面；
2、修饰形容词或者其他副词时，也是放在形容词和其他副词的前面；
3、修饰句子时，可以单独放在句首，用逗号隔开。通常表示实践和程度的副词有这种用法。
副词的位置:
副词在句子中的位置相比形容词更加灵活——不像形容词须紧挨着被修饰结构，副词有时可以与被修饰结构相隔一段距离。