not but的用法和样例：
例句
- I can not but tell him the truth.
我不得不告诉他实情。 - I can not but be gay in such a jocund company.
我和如此快乐的同伴在一起岂能不乐。 - He's never walked that far, not but that he could do it if he tried.
虽然他若试试能走到，但他从未走过那么远。 - He could not but look up to the sky and sigh deeply when his lifetime of frustrations passed through his mind.
想起自己坎坷的一生，他不由仰天长叹。
词汇搭配
- not but 不是 ... 而是 ...
- last but not least 最后但并不是最不重要...
- not only ... but 不仅 ... 而且...
- not ... but 不是 ... 而是...
- not but what 虽然(虽则)
- not but that 并非不
- not that…but that… 不是(因为)…而是(...
- not only ... but also 不但 ... 而且...
