〜ものだ（感慨） mono da
〜ものだ（感慨）（mono da）means “how ... it is! / one really does... (deep feeling / reminiscence)”. Adds a tone of deep emotion or heartfelt feeling to a statement: 'how . Formation: V（普通形）＋ ものだ ／ Aい ＋ ものだ ／ Aな ＋ な ＋ ものだ
how ... it is! / one really does... (deep feeling / reminiscence)
N2Formation
V（普通形）＋ ものだ ／ Aい ＋ ものだ ／ Aな ＋ な ＋ ものだ
Explanation
Adds a tone of deep emotion or heartfelt feeling to a statement: 'how ... it is!'. With the past form V-た＋ものだ it expresses nostalgic reminiscence about things that used to happen regularly: 'we often used to...'. It voices a general, felt truth rather than a specific single event.
Examples
Note
The reminiscence use almost always takes the past V-た＋ものだ. The plain feeling use takes present-tense adjectives/verbs. Distinguish from the 'should/ought' use of 〜ものだ.
FAQ
〜ものだ（感慨） — what does it mean and how is it used?
how ... it is! / one really does... (deep feeling / reminiscence). Adds a tone of deep emotion or heartfelt feeling to a statement: 'how ... it is!'. With the past form V-た＋ものだ it expresses nostalgic reminiscence about things that used to happen regularly: 'we often used to...'. It voices a general, felt truth rather than a specific single event.
〜ものだ（感慨） — how do you form it?
V（普通形）＋ ものだ ／ Aい ＋ ものだ ／ Aな ＋ な ＋ ものだ
〜ものだ（感慨） — any usage notes?
The reminiscence use almost always takes the past V-た＋ものだ. The plain feeling use takes present-tense adjectives/verbs. Distinguish from the 'should/ought' use of 〜ものだ.