Casually asking whether something particular is the reason


Up until now, I've been under the impression that it's acceptable in casual
texting or speech to say ○○から？？ when you're asking whether ○○ is the reason
for whatever the topic of conversation is.

For example this (non-native) text, as a response to something someone else
texted you that implied they were trying to communicate that they were angry:

そっか、怒ってたのか…もしかしてこの前あれをしたから？

Here, the person that did the あれをした is the writer, and the person who was
presumably 怒ってた is the person they're talking to.

But upon searching, I've been unable to find any examples of this pattern,
which I suppose could be considered a fragment or part of an inverted
sentence.

Is there a more correct way to ask this type of question? Using
[Youglish](https://youglish.com/pronounce/%E3%81%8B%E3%82%89%E3%81%AA%E3%81%AE%20%3F/japanese?),
I found examples of similar patterns like からなのか？ and からなのかな？, but (without
going through all of the results), no examples simply using からなの？ or から？. I
was under the impression that at least one of the latter two was acceptable in
this exact situation, but now I'm doubting myself.




I think あれをした is already not completely natural.

If you are asking whether your past action is the reason, either you mention
it as あれ (without した) or explicitly say what あれ is.

Also, せい can be used and is probably more common in speech (in such a
context).

Thus:

  * この前のあれのせい？
  * この前のあれのせいで？
  * この前のあれのせいなの？
  * この前Xしたから？
  * この前Xしたからなの？
  * この前のことで？

would be more natural.

To me, if you are mature enough male, なの sounds a bit odd. I added この前のことで？,
which is perhaps the most natural (or more colloquial こないだのことで？).

* * *

As a second thought, こないだあれしたから？ may be natural. But I cannot really explain
why omitting を makes it natural.




I think あれをした is already not completely natural.

If you are asking whether your past action is the reason, either you mention
it as あれ (without した) or explicitly say what あれ is.

Also, せい can be used and is probably more common in speech (in such a
context).

Thus:

  * この前のあれのせい？
  * この前のあれのせいで？
  * この前のあれのせいなの？
  * この前Xしたから？
  * この前Xしたからなの？
  * この前のことで？

would be more natural.

To me, if you are mature enough male, なの sounds a bit odd. I added この前のことで？,
which is perhaps the most natural (or more colloquial こないだのことで？).

* * *

As a second thought, こないだあれしたから？ may be natural. But I cannot really explain
why omitting を makes it natural.

