〜ものだ should / used to / general truth: Meaning & Examples

How 〜ものだ works

With a dictionary-form verb it states a general truth or a social expectation — 約束は守るものだ (“you should keep your promises”). With a past-form verb it turns nostalgic — 子供のころ、よくここで遊んだものだ (“we used to play here”). And after a descriptive phrase it becomes an exclamation — 時間が経つのは早いものだ (“how quickly time passes”).

構文こうぶんConstruction

• Dictionary form + ものだ — a general truth or rule of life

  約束は守るものだ。 — You should keep your promises.

• Plain past + ものだ — nostalgia

  昔はよく映画を見に行ったものだ。 — We used to go to the cinema a lot.

• 〜ものではない — “one shouldn’t”

  人の悪口を言うものではない。 — You shouldn’t speak ill of people.

• After a description — an exclamation

  月日が経つのは早いものだ。 — How quickly the months go by.

例文れいぶんIn a sentence

注意点ちゅういてんNuances

• 挨拶はするものだ means “that is what people do”, which is why it sounds like advice from an older relative rather than an order.
• The nostalgic use needs the past form and usually よく: 昔はよく〜たものだ. Drop よく and the sentence drifts back toward the general-truth reading.
• 〜ものではない is the sharpest of the three and is how Japanese tells someone off gently: そんなことを言うものではありません.
• Do not confuse it with 〜ものだから (an excuse) or ものの (although). Same もの, completely different patterns.

練習れんしゅうYour Turn

Tip

Write one rule of life with dictionary form + ものだ, one nostalgic memory with 〜たものだ, and one gentle telling-off with 〜ものではない. Three sentences, one ending, three meanings.

〜ものだ (should / used to / general truth) in real sentences

Each one is quoted from a published Japanese text in this library and links to the story it came from. Some use older spellings, or break off where the sentence carried on. They are transcribed exactly as their authors wrote them.

Appears in 9 of 367 texts in our library.