N2obligation

～ものだ (mono da) - Should / Ought to

[Verb dictionary form] + ものだ

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[Verb dictionary form] + ものだ means "Should / Ought to / It's natural to". As a N2 grammar point, it is tested in the JLPT. Detailed examples and a usage explanation are on this page.

Significato

Should / Ought to / It's natural to

Spiegazione

Expresses general truth, moral obligation, or what is expected.

Esempi

親を大切にするものだ。

おやをたいせつにするものだ。

Si dovrebbe avere cura dei propri genitori.

親—Parent 大—Big

約束は守るものです。

やくそくはまもるものです。

Le promesse vanno mantenute.

約—Promise 束—Bundle 守—to protect

Practice this grammar

[Verb dictionary form] + ものだ

Which sentence correctly uses "～ものだ (mono da) - Should / Ought to"?

Vocaboli da questi esempi

約PromiseN3 守to protectN3 束BundleN3 守Guard 親Parent 約Approximately 束Bunch 大Big

Ultimo aggiornamento Jul 22, 2026