Japanese grammar

What does ~ものだから mean? Japanese grammar N2

~ものだから means the thing is… (giving an excuse).

Quick facts
Level (estimated, JLPT framework)N2
StructurePlain form + ものだから
な形/N + な + ものだから
Romajimonodakara
Meaningthe thing is… (giving an excuse)

Forming it

Verb遅れた → 電車が遅れたものだから
na-adjective不安 → 不安なものだから

How to use it

States a reason to JUSTIFY something one has done, hoping for the listener's understanding. An explanatory, pleading tone.

  • 「~ものだから」 = it's just that… so: 「電車が遅れたものだから、遅刻してしまいました」.
  • The reason must be something OUTSIDE one's own control — that is the key point of the justifying nuance.
  • The second clause CANNOT be a command or invitation. The casual contraction is 「もんだから」; the polite form is 「ものですから」.

Examples

  • The train was delayed, so I could not make the meeting.

  • My child has a fever, so please allow me to leave early.

Keep in mind

  • A noun and na-adjective need 「な」.
  • The second clause does not use a command/invitation.

Common mistakes

  • Wrong雨(あめ)が降(ふ)っているものだから、傘(かさ)を持(も)って行(い)きなさい。

    It's raining, so take an umbrella.

    Correct雨(あめ)が降(ふ)っているから、傘(かさ)を持(も)って行(い)きなさい。

    The second clause is a command, so 「から」 must be used instead.

  • Wrong人気(にんき)があるだものだから、予約(よやく)が必要(ひつよう)だ。

    It's just that the place is popular, so a reservation is needed.

    Correct人気(にんき)があるものだから、予約(よやく)が必要(ひつよう)だ。

    After a verb or i-adjective it connects directly; only nouns and na-adjectives need 「な」.

Exam tips

  • 「ものだから」 = it's just that… (justification); the second clause cannot be a command.

Related patterns

All N2 grammar →