What it means
たものだ follows a verb in the past plain form and recalls something that happened repeatedly or was customary in the past. It often conveys nostalgia or a reflective feeling, similar to “used to” or “would” in English. It is commonly used when looking back on childhood, school days, former routines, or past experiences. The form usually describes a repeated habit rather than a single completed event.
Usage note
たものだ should not normally be used for one isolated past action. For a single event, use the ordinary past form instead. The polite counterpart is たものです, which keeps the same reflective meaning while making the sentence more formal.
How to use it
子供のころ、よく川で泳いだものです。
When I was a child, I used to swim in the river often.
子供のころ、よく川で泳いだものだ。
When I was a child, I used to swim in the river often.
Example sentences
学生のころは、毎朝駅まで自転車で走ったものだ。
When I was a student, I used to ride my bicycle to the station every morning.
祖父の家へ行くと、夏休みには毎晩庭で星を眺めたものだ。
Whenever I went to my grandfather's house, I used to gaze at the stars in the garden every night during summer vacation.
高校生のころは、試験の前になると図書館