N3 — outside your level filter

ものだ

ものだmono daN3neutral

savor + that's just how it is

ajiwau mono da

that's just how it is; you really should; used to do

meaning: that's just how it is

人ひとは誰だれでも間違まちがえるものだ。

hito wa dare demo machigaeru mono da.

Everyone makes mistakes, that's just how people are. neutral

子供こどものころ、よくこの川かわで泳およいだものだ。

kodomo no koro, yoku kono kawa de oyoida mono da.

When I was a kid, I used to swim in this river all the time. neutral

Same meaning1

that's just how it is; you really should — a general truth

人ひとは誰だれでも間違まちがえるものだ。
hito wa dare demo machigaeru mono da.
Everyone makes mistakes, that's just how people are. neutral
挨拶あいさつぐらいちゃんとするもんだよ。
aisatsu gurai chanto suru mon da yo.
You really ought to at least say a proper hello. casual
年としを取とると、体からだのあちこちが痛いたくなるものです。
toshi o toru to, karada no achikochi ga itaku naru mono desu.
As one gets older, one's body naturally starts aching here and there. neutral
人ひとの悪口わるくちを言いうものではない。
hito no waruguchi o iu mono de wa nai.
You shouldn't speak ill of others. neutral

used to do — a wistful remark about a habit now over

子供こどものころ、よくこの川かわで泳およいだものだ。
kodomo no koro, yoku kono kawa de oyoida mono da.
When I was a kid, I used to swim in this river all the time. neutral
若わかい時ときは、朝あさまで平気へいきで遊あそんだもんだよ。
wakai toki wa, asa made heiki de asonda mon da yo.
Back when I was young, I used to stay out having fun till morning without a second thought. casual
昔むかしは、子供こどもの前まえでそんな話はなしはしなかったものだ。
mukashi wa, kodomo no mae de sonna hanashi wa shinakatta mono da.
In the old days people never talked like that in front of children. neutral

how I wish — 〜たいものだ states a wish anyone would share

一度いちどでいいから、船ふねで世界せかいを回まわってみたいものだ。
ichido de ii kara, fune de sekai o mawatte mitai mono da.
Just once, how I'd like to sail around the world. neutral
来年らいねんこそは家族かぞくでゆっくり過すごしたいものですね。
rainen koso wa kazoku de yukkuri sugoshitai mono desu ne.
Next year I really would like to take it easy with the family, wouldn't you agree. neutral

もんだmondacolloquial
味あじわうもんだ
A casual, spoken-only shortening — 疲つかれるもんだ, よく叱しかられたもんだ.

The wistful sense can also read as praise (よくできたものだ, "well done"). もの
without だ (んだもの, ものか) is a different word entirely.