but 與 except兩者都可表示“除…外不再有…”，但含義上略有差別：but側重指意義的幾乎完整性，而 except 則側重指後面除去的部分：All are here but one. 除一個人外大家都到了。All are here except one. 還有一個人沒到。還有一個人沒到。另外，在現代英語中，but 的介詞用法十分有限，一般說來，它只能用在下列詞語之後：① no, no one, nobody, nothing, nowhere 等② any, anyone, anybody, anything, anywhere 等③ every, everyone, everybody, everything, everywhere 等④ all, none 等⑤ who, what, where 等Everyone knows it but you. 除你之外大家都知道。I haven’t told anybody but you. 除你之外，我沒告訴任何人。No one but he [him] showed much interest in it. 除他之外沒有一個人對此有很大興趣。但是 except 卻沒有以上限制：正：The window is never opened except in summer. 除夏天外，這扇窗戶從不開啟。 誤：The window is never opened but in summer.
but 與 except兩者都可表示“除…外不再有…”，但含義上略有差別：but側重指意義的幾乎完整性，而 except 則側重指後面除去的部分：All are here but one. 除一個人外大家都到了。All are here except one. 還有一個人沒到。還有一個人沒到。另外，在現代英語中，but 的介詞用法十分有限，一般說來，它只能用在下列詞語之後：① no, no one, nobody, nothing, nowhere 等② any, anyone, anybody, anything, anywhere 等③ every, everyone, everybody, everything, everywhere 等④ all, none 等⑤ who, what, where 等Everyone knows it but you. 除你之外大家都知道。I haven’t told anybody but you. 除你之外，我沒告訴任何人。No one but he [him] showed much interest in it. 除他之外沒有一個人對此有很大興趣。但是 except 卻沒有以上限制：正：The window is never opened except in summer. 除夏天外，這扇窗戶從不開啟。 誤：The window is never opened but in summer.