Topic N3
Japanese Learning
71. ないと : Must / Have to / Need to.

✏️Structure
Verb-nai + と💡Usage
Casual spoken form of "なければならない". Expresses obligation, must do. "Must...", "Have to...".
📚Examples
もうこんな時間だ、早く行かないと終電に間に合わなくなる。
Mou konna jikan da, hayaku ikanai to shuuden ni maniawanaku naru.
It is already this late; if I do not go quickly, I won't make it for the last train.
明日は大事な試験があるから、今夜は徹夜で勉強しないと。
Ashita wa daiji na shiken ga aru kara, konya wa tetsuya de benkyou shinai to.
Since there is an important exam tomorrow, I have to stay up all night studying tonight.
会議の時間が迫っているから、急がないと絶対に間に合わないよ。
Kaigi no jikan ga sematte iru kara, isoganai to zettai ni maniawanai yo.
The meeting time is approaching, so if we don't hurry we absolutely won't make it in time.
最近働きすぎだから、週末くらいはゆっくり寝ないと疲れが取れないよ。
Saikin hatarakisugi da kara, shuumatsu kurai wa yukkuri nenai to tsukare ga torenai yo.
You have been working too much lately, so you must get plenty of sleep at least on the weekend or you won't recover from fatigue.
朝ごはんをしっかり食べないとお腹が空いて授業に集中できないよ。
Asagohan wo shikkari tabenai to onaka ga suite jugyou ni shuuchuu dekinai yo.
If you don't eat a proper breakfast, you will get hungry and won't be able to stay focused in class.
母が一人で家で待っているから、そろそろ家に帰らないと。
Haha ga hitori de ie de matte iru kara, sorosoro ie ni kaeranai to.
Since my mother is waiting at home alone, I have to go back home soon.
ピアノは毎日コツコツと練習しないとなかなか上手にならないものだ。
Piano wa mainichi kotsukotsu to renshuu shinai to nakanaka jouzu ni naranai mono da.
Piano is something you won't easily become good at unless you practice steadily every day.
早く起きないと学校の始業時間に遅刻してしまうよ。
Hayaku okinai to gakkou no shigyou jikan ni chikoku shite shimau yo.
If you don't wake up early, you will be late for the school start time.
このプロジェクトは今日中に終わらせるために、もっと頑張らないとダメだ。
Kono purojekuto wa kyou juu ni owaraseru tame ni, motto ganbaranai to dame da.
To finish this project by today, it's no good if we don't try harder.
あの限定商品は大人気だから、今すぐ買わないとすぐに売り切れてしまうだろう。
Ano gentei shouhin wa daininki da kara, ima sugu kawanai to sugu ni urikirete shimau darou.
Because that limited edition product is very popular, if you don't buy it right now it will probably sell out immediately.