～ないと (〜nai to)
Explanation
Express a condition; 'if... not', 'unless', 'must'.
Formation
Verb-negative form + ないと
Detailed Explanation
The ～ないと grammar point is used to express a condition, focusing on the negative consequences if the action is not performed. It can be translated as 'if... not', 'unless', or 'must' in English. The formation is simply attaching ないと to the negative form of a verb.
Examples
朝食を食べないと、お腹が空く。
Asa gohan wo tabenai to, onaka ga suku.
If I don't eat breakfast, I will be hungry.
宿題をしないと、先生に怒られる。
Shukudai wo shinai to, sensei ni okorareru.
If I don't do my homework, the teacher will be angry.
充電をしないと、電話が使えなくなる。
Juden wo shinai to, denwa ga tsukaenaku naru.
If I don't charge it, I won't be able to use the phone.
この事故を報告しないと、問題が大きくなる。
Kono jiko wo houkoku shinai to, mondai ga ookiku naru.
If I don't report this accident, the problem will become bigger.
Grammar content sourced from hanabira.org.