There was dead silence but for a fly beating against the glass.(若没有一只苍蝇在扑打着玻璃，便是一片死寂。)
It was clear that the elephants could, at any time, break away from their ropes but for some reason, they did not.(很明显，大象在任何时候都可以挣脱绳索，但出于某种原因，它们没有这样做。)
There's still another ten minutes of the game to go, but for practical purposes it's already over.(比赛虽然还有十分钟，但实际上等于已经结束了。)
In other words, poor and rich both over-exploit the natural world, but for different reasons.(换句话说，穷人和富人都过度开发自然世界，但原因不同。)
I am but an archangel; but for him I should be pope!(我不过是个大天使；要不是他，我就当教皇了！)
I might not have particularly remembered this but for a similar thing which happened on another occasion.(要不是同样的事在别的场合发生过，我可能不会特别记住这件事。)
But for now, she is in the grip of a blind, unfocused anger.(但是现在，她正被一股盲目的无目标的怒气控制着。)
He would have played but for a knee injury.(他要不是膝部有伤的话，就上场了。)
We wouldn't have been there but for him.(要不是他，我们就不会到那里去了。)
I was sure she knew the answer but for some reason she hung back.(我敢保证她知道答案，但不知为什么她不敢说出来。)
