Usages of 〜nakereba
十時 まで に 来られなければ、 会議 に 遅れます。zyuuzi made ni korarenakereba, kaigi ni okuremasu.
If you can’t come by ten o’clock, you will be late for the meeting.
早く 起きなければ、 学校 に 間に合いません。hayaku okinakereba, gakkou ni maniaimasen.
If I don't wake up early, I won't be on time for school.
急行 が 止まらなければ、 次 の 駅 まで 行く。kyuukou ga tomaranakereba, tugi no eki made iku.
If the express doesn’t stop, I’ll go to the next station.
在庫 が あって も、 故障 の 原因 が 分からなければ、 すぐ 交換して もらえないこと も ある。zaiko ga atte mo, kosyou no genin ga wakaranakereba, sugu koukansite moraenaikoto mo aru.
Even if it is in stock, there are times when you cannot get it exchanged right away if the cause of the malfunction is unknown.
この 本 は 在庫 が なければ、 取り寄せ を お願いします。kono hon ha zaiko ga nakereba, toriyose wo onegaisimasu.
If this book is not in stock, please special-order it.
この 機械 の 操作 が 分からなければ、 店員 に 聞いて ください。kono kikai no sousa ga wakaranakereba, tenin ni kiite kudasai.
If you do not know how to use this machine, please ask the clerk.
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Japanese verbs conjugate based on tense, politeness, and mood. For example, the polite present form adds ‑ます to the verb stem, while the past tense uses ‑ました. Unlike English, Japanese verbs don't change based on the subject — the same form works for "I", "you", and "they".
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