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JLPT N1Grammar
~たが最後

once ~, if ever ~

Advanced
20-30 min
common
Checked against our selection criteria

Explanation

Once something happens, bad consequence inevitably follows.

Formation

[Verb た] + が最後

Examples

彼に秘密を話したが最後、すぐに広まる。

Kare ni himitsu wo hanashita ga saigo, sugu ni hiromaru.

Once you tell him a secret, it immediately spreads.

始めたが最後、止められない。

Hajimeta ga saigo, tomerarenai.

Once you start, you can't stop.

Common Mistakes to Avoid

Strong warning about inevitable negative consequence.

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