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ものだから — “because… (explaining/excusing)”

JLPT N2 Reason & Excuse

Gives a reason in a slightly defensive, explaining-myself tone

Plain-form clause + ものだから gives a reason for something, often with a note of self-justification or mild excuse — “it's because…, so (please understand).” It's common when explaining an unintentional mistake or an unusual result, softer and more personal than から.

How to form it

PatternExample
Plain form + ものだから急いでいたものだから、忘れ物をしてしまった — I was in a hurry, so I ended up forgetting something

Example sentences

JapaneseReadingMeaning
でんしゃがおくれたものだから、ちこくしてしまいました。
denshagaokuretamonodakara、chikokushiteshimaimashita。
The train was late, so I ended up being late.
あまりにおいしそうだったものだから、ついたべすぎてしまった。
amarinioishisoudattamonodakara、tsuitabesugiteshimatta。
It looked so delicious that I ended up eating too much.
こどもがねつをだしたものだから、かいしゃをやすみました。
kodomoganetsuwodashitamonodakara、kaishawoyasumimashita。
My child came down with a fever, so I took the day off work.

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Watch out

ものだから carries an apologetic, self-justifying tone — using it to explain someone else's actions, rather than your own, can sound like you're making excuses on their behalf, which reads oddly.

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