There are few but admire his great achievements.
很少有人會不欽佩他的卓越成就的. 這個but的詞性稱為「準關係代名詞 」, 簡稱「準關代」, 是具有否定性質的關代. 本句可改寫為相同意思的:
There are few who don't admire his great achievements.
1) as : 用在as/such/ the same 之後例：As many children as came here were my father's pupils.= All the children that came here were my father's pupils.到這裏來的那麼多小孩全都是我爸爸的學生。 You shall have as much money as you need.= You shall have all the money that you need.你會有你所需要的那麼多的錢 －－你需要多少錢，我就給你多少錢。 Such as praise you to your face are likely to speak ill of you behind your back.
=Those who praise you to your face are likely to speak ill of you behind your back.當你的面稱讚你的人可能會在你的背後說你的壞話。 2) but : (a) but之前的主要子句裏必須有否定的字（如 no, not, scarcely等）。(b) but本身含有否定的意思（如"不"，"沒有"等），所以稱為否定的關係代名詞（Negative Relative Pronoun），其作用相當於 that...not。(c) 由於 but本身是否定,前面又有否定的字而構成了雙重的否定。雙重的否定即等於肯定，所以含有關係代名詞 but的句子，其含意即等於一個有形容詞 every的肯定句，但前者語氣較強。例: There is no one but has a few faults.
= There is no one that （or who） has not a few faults.
= Everyone has a few faults.
There is nothing in the world but is influenced by the sun.= There is nothing in the world that is not influenced by the sun. = Everything in the world is influenced by the sun.
There is scarcely a child but likes candy.= There is scarcely a child that （or who） does not like candy. = Nearly every child likes candy幾乎沒有一個小孩不喜歡糖果－－幾乎每一個小孩都喜歡糖果。 3）than : 比較級形容詞所修飾的名詞（先行詞）之後的關係代名詞。
例：Children should not have more money than is needed.
Fewer people than we had expected were present.
2011-03-09 17:48:51 補充：
few but admire...
few = few people, 是先行詞
= few who don't admire
2011-03-10 17:24:28 補充：