有些形容词没有比较级形式，如 :absolute ， chief ， entire ， eternal ， excellent ， fatal ， final ， foremost ， inevitable ， infinite ， main ， naked ， perfect ， possible ， primary ， right ， sufficient ， supreme ， universal ， utter ， vital ， whole ， wooden ， ect. 例如 :
    Mary is the best student in the class.
     Further negotiation will be conducted next month.
    The food we have is sufficient .
    Needless to say ， he is stronger than his opponent.
     一般副词的比较级和最高级与形容词一样，单音节的以在词尾加 -er 和 -est 构成，多音节的以加 more 和 most 的方法构成 ; 有些比较特殊 , 如： well-better-best ， badly-worse-worst ， much-more-most ， little-less-least 。以 -ly 结尾的副词，在其前面加 more ， most 。例如 :
    Tonny runs more beautiful than any other students in the class.
    Which do you like best ， Thorn Birds ， Gone With the wind or great expectation?
    I prefer less sugar in the milk.
    She get more income every month than her husband.
     形容词和副词的原级比较由 “as + 形容词或副词 ( 或后跟名词或短语 )+as” 构成， “as-as“ 前可加 not ， just ， almost ， nearly ， quite ， twice ， several times 等词修饰。否定式中 not 后面的 as 可改为 so 。例如 :”
    Running for fifteen minutes will burn as much calories as walking for thirty minutes.
    Henan Province is several times as large as shanghai.
    Jimmy has as nervous a way of speaking as his father.
    Getting rid of a bad habit isn't so simple as taking it up.
     形容词与副词的比较级形式为 :“ 形容词 ( 副词 ) 比较级 +than+-” ，应注意 than 前后相比较的人或物要一致。比较级前可以跟 even ， much ， stilI 等副词修饰比较级，表示强调。例如 :
    Mother worried much more about my younger brother than she did about me.
    Sound travels faster through water than through air.
    The economic development in south China is faster than that in North China .
    My books are much more than Li ping's.
     形容词与副词的最高级的形式分别为 :“the+ 形容词最高级 + 名词十范围表达 ” 和 “ 副词最高级十名词 + 范围表达 ” ，副词的比较级和最高级不需要加 the 。例如 :
    Our foreign exchange reserve didn't decline despite the worst flood in sixty years.
    I finished the work more successfully than he had expected.
     应注意以下表达式的含义 :the same as( 和 …… 一样 ) ， no less than( 不少于 ) ， not less than( 只有 ) ， had better( 最好 ) ， less than( 不到 ) ， more or less( 或多或少 ) ， other than( 除了 ) ， rather than( 而不是 ) ， the more…the more/less( 越 …… 就越 ……)
例如 :I am sure that the amount of money used in repaying a loan would have the same value as the amount of money borrowed.
    You had better finish your homework today for the teacher will collect it tomorrow .
    We have received ten dozen of personal computers which are less than the amount we ordered.
    The visitors to the exhibition were not less than three hundred, which disappointed them very much.

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