but用作介词时表示“除…以外”,通常与表示确切意思的词,如no,all,any,every,each,none,nobody,anywhere等以及疑问词,如who,where,what等连用,但不能与some,many,several等表示不确切意思的词连用。所以,我们可以说all but one,但不能说some but one或many but one。也可与最高级形容词连用。其后面可以是名词、介词短语、形容词等。
but用作介词一般不置于句首。
but引导的短语后置于主语之后时,句中谓语应该和主语在人称和数上保持一致。
but用法例句
1、A miracle is something that seems impossible but happens anyway.
奇迹就是看似不可能,却发生了。
2、For what do we live, but to make sport for our neighbours, and laugh at them in our turn?
我们活着是为了什么?不就是给邻居当笑柄,再反过来笑他们。
3、English has hurt me a thousand times, but I still regard it as my first love.