〜ば〜のに（反実仮想）

N3

V（条件形） + 〜のに イAければ + 〜のに ナAなら + 〜のに Nなら + 〜のに

「〜ば〜のに（反実仮想）」表示与实际情况相反的假设，用来表达遗憾、失望、惊讶等感情。
前面的条件句使用「ば」形式，后面的主句使用「のに」。
整体意思就是如果前面的条件成立，但实际情况并非如此，感到遗憾或者惊讶。
比如，如果说「もっと早く出発すれば良かったのに」，意思是如果早点出发就好了，但实际上并没有这样做，感到遗憾。

The grammar pattern "~ば~のに" in Japanese is used to express a situation that didn't happen, but you wish it had happened or you expected it to happen.
It's often used to convey a sense of regret, disappointment, or frustration.
The first clause before "~ば" describes the condition that would have led to a certain result, and the second clause after "~のに" expresses the actual outcome that didn't happen.
For example, if you say "行けばよかったのに" (Ikeba yokatta noni), it means "I wish I had gone" or "I should have gone", indicating that you regret not going when you had the chance.

～すれば違う結果になっていたのに・・・。