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JLPT N1 Grammar

たことにする / たことになる

N1处理

N1 · 处理 · ta-form verb + ことにする / ことになる

decide/pretend that; be treated as

ta-form verb + ことにする / ことになる

Shows that something is decided by someone, or treated by a system, as having happened.

ことにする is more active decision; ことになる is more rule-based, resultant, or externally decided.

出席確認に返事がなければ、欠席したことになります。

If there is no reply to the attendance confirmation, it will be treated as an absence.

Do not confuse it with something actually happening; it emphasizes treating or counting it as such.

Reality may not be so, but the rules count it that way.

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