9課 条件 教科書 p.40〜43
Conditions — if it is…, once it is… then it is over, if there is no…
接続:動た形 + ら最後/が最後
Once... it's over (end of rescue). If you do that, it will definitely lead to bad consequences.
注意 / Note:The latter is always a negative, irreversible outcome. 〜たが最後 stronger and harder.
比較 / Compare:〜たら最後/〜たが最後(irreversible outcome); 〜たが最後 is harder.
よく出る形 / Common form:動た形+ら最後/が最後+(悪い結果).
彼はしゃべりだしたら最後、何時間でも止まらない。
Once he opened his mouth, he wouldn't stop talking no matter how many times he spoke.
この書類をなくしたが最後、再発行はできない。
If you lose this document, it's over, it cannot be reissued.
彼女は話し始めたら最後、こちらの話は聞いてくれない。
Once she started talking, she couldn't hear anything else I said.