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>   1.
> 「さて、二人とも。今日来てもらったのは他でもない。ーー宇宙空間を漂っていた先の精霊が<ラタトスク>の手に落ちたことで、彼らの元には累計一〇体もの精霊が集まっ
> **たことになった** 」(Date a live, novel)
>
>   2. 家出初日にして、僕は四日分の食費を知らないオッサンのために遣ってしまっ **たことになる** 。(天気の子, novel)
>
>

I know たことになる is used to talk about something counterfactual (反事実) in the
sense of “pretend”. <https://nihongonosensei.net/?p=8279>

But the above two examples I quoted are not 反事実. The context for 1 is that
<ラタトスク> has 10 精霊 in fact, and the context for 2 is that the speaker in fact
spent a quarter of food expenses on the stranger.

So how should I understand this grammar phenomenon, if these たことになるs can’t
express 反事実?
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2021-03-27T14:06:02.837
85804
2021-03-28T05:31:45.150
36662
question
grammar
Understanding the grammar phenomenon that たことになる is not always 反事実
～たことになる really means "be virtually equivalent with —ing" or "turn out that —
in all", which is used when you could never name an actual moment when it did,
but the result is just as if it takes place. Thus it is not really relevant to
factual or counterfactual, and real or pretend.

This is technically same for ～たことにする, but as する stands for an intentional
cognitive operation, it usually implies the agent somewhat admits that it is,
at least, not wholeheartedly true.
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2021-03-28T05:31:45.150
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2021-03-28T05:31:45.150
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85804
answer