1. 并列結(jié)構(gòu)。
    這主要是指由and或or連接的幾個并列成分在形式上必須保持一致.這一考點在歷年六級改錯中出現(xiàn)頻率相當高,同學們要給予相當?shù)闹匾?
    (1) At the heart of the NEA survey is the belief in(改成that,同位語從句)our democratic system depends on leaders who can think critically, analyze texts and writing clearly.(07年1月新六級改錯第6題)這里的writing顯然與think和analyze并列,因此應該用同樣的形式,所以應該改成write.
    (2) Their experiments have shown that reading disorders are most likely the result of what is, in an effect(去掉an,固定介詞搭配)，faulty wiring in the brain-----not lazy, stupidity or a poor home environment .( 06年6月六級改錯第4題)這里的lazy應該與stupidity和a poor home environment并列,因此該用名詞形式laziness.
    (3) Restrict yourself to one or two pages, and listing any publications or referees on a separate sheet.(06年1月六級改錯第7題)通過and將restrict和listing聯(lián)系起來表示并列關(guān)系,所以listing應該用原形list.
    (4) How do you know how to act in a classroom,
    or a department store, or toward a person who
    smiles or laugh at you?(04年6月六級改錯第9題)
    這里的smiles和laugh肯定應該用同樣的形式,而前面的
    a person又提示我們該使用第三人稱單數(shù),所以將laugh改成laughs.
    (5)Most experts believe this can continue even as
    if(去掉as,這里的even if表示即使)the population doubles by the mid-21st century, although feeding
    10 billion people will not be easy for politics,
    economic and environmental reasons.(04年1月六級改錯第6題)同樣,這里的politics應該改成political和
    economic, environmental并列。
    （6）Elsewhere, rice experts in the Philippines are
    producing a plant with few stems and more seeds.
    (04年1月六級改錯第9題)few應該與more形成對應,所以應改成比較級形式fewer