jlptsensei.com/learn-japanese-grammar/%E3%81%93%E3%81%A8%E3%81%AB%E3%81%AA%E3%82%8B-koto-ni-naru-meaning/
Explains the N4 grammar pattern ことになる (koto ni naru), which expresses decisions or determinations made outside one's own resolve, with eight example sentences and related vocabulary.
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