JLPT N2 grammar
〜ものだから／もので — Meaning & Examples
It's just that X, so... — an excuse or explanation, often defensive ("it wasn't my fault"). 電車が遅れたものだから間に合わなかった. もので = softer, politer.
〜ものだから and 〜ことだから
〜ものだから／もので = "it's just that X, so (that's why)..." An explanation or excuse, often slightly defensive — the speaker is accounting for something that might otherwise look bad.
Formation: plain form + ものだから (な-adj + な, noun + な); もので is the softer, more polite short form
電車が遅れたものだから、会議に間に合わなかった。
= It's just that the train was delayed, so I didn't make it to the meeting on time.
子供が熱を出したもので、早退させていただきました。
= My child came down with a fever, so I left early (I hope you understand).
あまりに驚いたものだから、声も出なかった。
= I was so startled that I couldn't even speak.
The feel: "please understand — it wasn't my fault / I couldn't help it." Much more personal and excuse-flavoured than から. Common when apologising or explaining yourself to someone above you.
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〜ことだから = "knowing X, (I'm sure) Y." A confident prediction about how a specific, known person (or group) will behave — based on their established character.
Formation: noun + の + ことだから (almost always a person / people)
真面目な田中さんのことだから、時間通りに来るだろう。
= Knowing Tanaka, conscientious as he is, he'll surely come on time.
あの子のことだから、また忘れ物をしているに違いない。
= Knowing that kid, he's bound to have forgotten something again.
The logic: "That's so typical of them that I can predict this." It needs a shared understanding of the person's character — you can't use it about a stranger.
One-sentence contrast of all four:
プロだけあって上手だ (lives up to it) / プロだけにミスは許されない (all the more so) / 緊張していたものだからミスをした (excuse) / 完璧主義の彼のことだから、何度も確認するだろう (confident guess).
Practice questions
Try these 2 questions on 〜ものだから／もので. Pick an answer in your head, then open “Show answer”.
1. 電車が遅れたものだから、会議に間に合わなかった conveys?
- A neutral statement of cause
- A complaint about the meeting
- A plan to be late
- An explanation/excuse — "it wasn't my fault, the train was delayed"
Show answer
Answer: An explanation/excuse — "it wasn't my fault, the train was delayed"
〜ものだから = "it's just that X, so..." — a defensive explanation or excuse, more personal than から.
2. 子供が熱を出したもので、早退させていただきました — what does もので add over から?
- Nothing
- It makes it a question
- A stronger, more assertive tone
- A softer, more polite, apologetic "I hope you understand" tone
Show answer
Answer: A softer, more polite, apologetic "I hope you understand" tone
もので is the softer, politer short form of ものだから — common when explaining yourself to someone senior.
Practise 〜ものだから／もので in the free app
This point is part of the “🎯 Fitting Expectations — だけあって・だけに・ものだから・ことだから” lesson in A Star Japanese. Study it with examples, a quiz, flashcards and timed JLPT N2 mock exams. Free on iPhone and Android.
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Related N2 grammar points
From the same lesson: 🎯 Fitting Expectations — だけあって・だけに・ものだから・ことだから
- 〜だけあってAs you'd expect from X — the result lives up to X, usually admiring.
- 〜だけにAll the more because X — X intensifies the result, which can be positive OR negative (oft…
- だけあって vs だけに有名なだけあって混んでいる (lives up to it, neutral) vs 有名なだけに批判も多い (precisely because — X cuts both w…
- 〜ことだからNoun(person) + の + ことだから = knowing them, surely Y — a confident guess based on someone's…
Frequently asked questions
What does 〜ものだから／もので mean?
It's just that X, so... — an excuse or explanation, often defensive ("it wasn't my fault"). 電車が遅れたものだから間に合わなかった. もので = softer, politer.
Is 〜ものだから／もので on the JLPT N2 test?
〜ものだから／もので is taught in the JLPT N2 grammar course in A Star Japanese (lesson “🎯 Fitting Expectations — だけあって・だけに・ものだから・ことだから”), so it is a pattern learners at this level are expected to recognise. The JLPT does not publish an official grammar list, so treat this as a study guide rather than an official requirement.
How can I practise 〜ものだから／もので?
Open the “🎯 Fitting Expectations — だけあって・だけに・ものだから・ことだから” lesson in the free A Star Japanese app for iPhone and Android. It has examples, a quiz after every lesson, flashcards with spaced repetition and timed JLPT N2 mock exams, with no ads.